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知乎专栏多维度架构

4.2. 使用 Python 优雅地编排 Kubernetes

4.2.1. 快速演示编排Nginx

你还用 yaml编排 kubernetes 吗?你是否意识到YAML的局限性,例如你无法定义变量,不能循环重复内容,不能跟高级语言互动,于是你转向了 HELM, helm 提供模版技术,可以在模版中实现包含引用,定义变量,循环等等操作,但也仅此而已。 YAML 和 HELM 方案更多是给运维人员准备的,对开发并不友好,那么有没有更好的解决方案呢?

我用 python 写的一个工具吧 netkiller-devops,安装方法

		
pip install netkiller-devops		
		
		

下面编排一个 nginx 给大家演示一下。运行环境使用 macOS + k3d

[提示]提示

k3s 是由 Rancher Labs 推出的一款轻量级 Kubernetes 发行版,满足在边缘计算环境中运行在 x86、ARM64 处理器上的小型、易于管理的 Kubernetes 集群日益增长的需求。

k3s 除了在边缘计算领域的应用外,在研发侧的表现也十分出色。我们可以快速在本地拉起一个轻量级的 k8s 集群,而 k3d 则是 k3s 社区创建的一个小工具,可以在一个 docker 进程中运行整个 k3s 集群,相比直接使用 k3s 运行在本地,更好管理和部署。

安装 k3d

		
brew install k3d		
		
		

启动集群

		
k3d cluster create mycluster --api-port 6443 --servers 1 --agents 1 --port '80:80@loadbalancer' --port '443:443@loadbalancer'		
		
		

现在创建一个 python 文件 例如 nginx.py 把下面内容复制进去

		
import os, sys

module = os.path.dirname(
    os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
print(module)
sys.path.insert(0, module)
from netkiller.kubernetes import *

namespace = Namespace()
namespace.metadata.name('development')
namespace.metadata.namespace('development')
# namespace.debug()

service = Service()
service.metadata().name('nginx')
service.metadata().namespace('development')
service.spec().selector({'app': 'nginx'})
service.spec().type('NodePort')
service.spec().ports([{
    'name': 'http',
    'protocol': 'TCP',
    'port': 80,
    'targetPort': 80
}])

deployment = Deployment()
deployment.apiVersion('apiVersion: apps/v1')
deployment.metadata().name('nginx').labels({'app': 'nginx'}).namespace('development')
deployment.spec().replicas(2)
deployment.spec().selector({'matchLabels': {'app': 'nginx'}})
deployment.spec().template().metadata().labels({'app': 'nginx'})
deployment.spec().template().spec().containers().name('nginx').image(
    'nginx:latest').ports([{
        'containerPort': 80
    }])
# deployment.debug()

ingress = Ingress()
ingress.apiVersion('networking.k8s.io/v1')
ingress.metadata().name('nginx')
ingress.metadata().namespace('development')
ingress.metadata().annotations({'ingress.kubernetes.io/ssl-redirect': "false"})
ingress.spec().rules([{
    # 'host': 'www.netkiller.cn',
    'http': {
        'paths': [{
            'path': '/',
            'pathType': 'Prefix',
            'backend': {
                'service': {
                    'name': 'nginx',
                    'port': {
                        'number': 80
                    }
                }
            }
        }]
    }
}])

# ingress.debug()

compose = Compose('development')
compose.add(namespace)
compose.add(service)
compose.add(deployment)
compose.add(ingress)
# compose.debug()
# compose.yaml()
# compose.save('/tmp/test.yaml')

kubernetes = Kubernetes()
kubernetes.compose(compose)
# kubernetes.debug()
# print(kubernetes.dump())
kubernetes.main()		
		
		

查看帮助信息 /usr/bin/python3 nginx.py -h

		
➜  devops git:(master) ✗ /usr/bin/python3 nginx.py -h
Usage: nginx.py [options] <command>

Options:
  -h, --help            show this help message and exit
  -e development|testing|production, --environment=development|testing|production
                        environment
  -l, --list            print service of environment

  Cluster Management Commands:
    -g, --get           Display one or many resources
    -c, --create        Create a resource from a file or from stdin
    -d, --delete        Delete resources by filenames, stdin, resources and
                        names, or by resources and label selector
    -r, --replace       Replace a resource by filename or stdin

  Namespace:
    -n, --namespace     Display namespace
    -s, --service       Display service

  Others:
    --logfile=LOGFILE   logs file.
    -y, --yaml          show yaml compose
    --export            export docker compose
    --debug             debug mode
    -v, --version       print version information		
		
		

现在开始部署 nginx 使用参数 -c,命令 /usr/bin/python3 nginx.py -c

		
➜  devops git:(master) ✗ /usr/bin/python3 nginx.py -c
namespace/development created
service/nginx created
deployment.apps/nginx created
ingress.networking.k8s.io/nginx created		
		
		

查看部署状态

		
➜  devops git:(master) ✗ kubectl get namespace
NAME              STATUS   AGE
default           Active   3h15m
kube-system       Active   3h15m
kube-public       Active   3h15m
kube-node-lease   Active   3h15m
development       Active   21m

➜  devops git:(master) ✗ kubectl get service -n development
NAME    TYPE       CLUSTER-IP    EXTERNAL-IP   PORT(S)        AGE
nginx   NodePort   10.43.19.13   <none>        80:31258/TCP   21m

➜  devops git:(master) ✗ kubectl get deployment -n development
NAME    READY   UP-TO-DATE   AVAILABLE   AGE
nginx   2/2     2            2           21m

➜  devops git:(master) ✗ kubectl get ingress -n development
NAME    CLASS    HOSTS   ADDRESS                 PORTS   AGE
nginx   <none>   *       172.23.0.2,172.23.0.3   80      21m
		
		
		

检验 nginx 启动情况

		
➜  devops git:(master) ✗ curl http://localhost
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
html { color-scheme: light dark; }
body { width: 35em; margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif; }
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>

<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>

<p><em>Thank you for using nginx.</em></p>
</body>
</html>				
		
		

4.2.2. 创建命名空间

		
import os, sys
from netkiller.kubernetes import *

print("=" * 40, "Namespace", "=" * 40)
namespaces = []
environment = ['development','testing','production']
for name in environment :
    namespace = Namespace(name)
    namespace.metadata().name(name)
    namespace.metadata().namespace(name)
    # namespace.debug()
    namespaces.append(namespace)

compose = Compose('development')
for ns in namespaces :
    compose.add(ns)

# compose.debug()
# compose.save('/tmp/test.yaml')
# compose.delete()
compose.create()		
		
		

4.2.3. ConfigMap/Secret 编排演示

ConfigMap 实例

			
from netkiller.kubernetes import *

config = ConfigMap()
config.apiVersion('v1')
config.metadata().name('test').namespace('test')
config.data({'host':'localhost','port':3306,'user':'root','pass':'123456'})
config.data({'redis.conf':pss(
    'pidfile /var/lib/redis/redis.pid\n'
    'dir /var/lib/redis\n'
    'port 6379\n'
    'bind 0.0.0.0\n'
    'appendonly yes\n'
    'protected-mode no\n'
    'requirepass 123456\n'
    )
    })
config.data({'dbhost':'localhost','dbport':3306,'dbuser':'root','dbpass':'123456'}).data({'mysql.cnf':pss('''\
mysql.db = devops
mysql.host = 127.0.0.1
mysql.user = root
mysql.pwd  = root123
mysql.port = 3306
''')})
config.json()
config.debug()				
			
		

输出结果

			
metadata:
  name: test
  namespace: test
data:
  host: localhost
  port: 3306
  user: root
  pass: '123456'
  redis.conf: |
    pidfile /var/lib/redis/redis.pid
    dir /var/lib/redis
    port 6379
    bind 0.0.0.0
    appendonly yes
    protected-mode no
    requirepass 123456
  dbhost: localhost
  dbport: 3306
  dbuser: root
  dbpass: '123456'
  mysql.cnf: |
    mysql.db = devops
    mysql.host = 127.0.0.1
    mysql.user = root
    mysql.pwd  = root123
    mysql.port = 3306
apiVersion: v1
kind: ConfigMap		
			
		

Secret 实例

			
secret = Secret()
secret.metadata().name('tls').namespace('development')
secret.data({'tls.crt':' ','tls.key':' '})
secret.type('kubernetes.io/tls')
secret.debug()			
			
		

Secret 运行结果

			
metadata:
  name: tls
  namespace: development
data:
  tls.crt: ' '
  tls.key: ' '
type: kubernetes.io/tls
apiVersion: v1
kind: Secret			
			
		

从文件创建 ConfigMap

			
from netkiller.kubernetes import *

print("=" * 40, "ConfigMap", "=" * 40)
config = ConfigMap()
config.apiVersion('v1')
config.metadata().name('test').namespace('default')
config.from_file('redis.conf', '/etc/redis/redis.conf').from_file('nginx.conf','/etc/nginx/nginx.conf')			
			
		

从环境变量文件创建 ConfigMap

			
config = ConfigMap('test')
config.apiVersion('v1')
config.metadata().name('test').namespace('test')
config.from_env_file('config.env')
config.debug()			
			
		

			
neo@Netkiller-iMac ~/w/d/d/k8s (master) [1]> cat config.env 
key=value
dev.logfile=/tmp/logfile.log
dev.tmpdir=/tmp			
			
		

运行结果

			
neo@Netkiller-iMac ~/w/d/d/k8s (master)> python3 /Users/neo/workspace/devops/demo/k8s/demo.py
metadata:
  name: test
  namespace: test
data:
  key: value
  dev.logfile: /tmp/logfile.log
  dev.tmpdir: /tmp
apiVersion: v1
kind: ConfigMap
			
		

4.2.4. Pod 挂载 ConfigMap 编排演示

			
from netkiller.kubernetes import *

print("=" * 40, "ConfigMap", "=" * 40)
config = ConfigMap()
config.apiVersion('v1')
config.metadata().name('test').namespace('default')
config.data({'redis.conf':pss(
    'pidfile /var/lib/redis/redis.pid\n'
    'dir /var/lib/redis\n'
    'port 6379\n'
    'bind 0.0.0.0\n'
    'appendonly yes\n'
    'protected-mode no\n'
    'requirepass 123456\n'
    )
    })
config.debug()

print("=" * 40, "Pod", "=" * 40)

pod = Pod()
pod.metadata().name('busybox')
pod.spec().containers().name('test').image('busybox').command([ "/bin/sh","-c","cat /tmp/config/redis.conf" ]).volumeMounts([{'name':'config-volume','mountPath':'/tmp/config/redis.conf','subPath':'redis.conf'}])
pod.spec().volumes().name('config-volume').configMap({'name':'test'}) # , 'items':[{'key':'redis.conf','path':'keys'}]
pod.debug()

print("=" * 40, "Compose", "=" * 40)
compose = Compose('development')
# compose.add(namespace)
compose.add(config)
compose.add(pod)

compose.delete()
compose.create()

print("=" * 40, "Busybox", "=" * 40)
os.system("sleep 10 && kubectl logs busybox")			
			
		

生成 yaml 内容

			
metadata:
  name: test
  namespace: default
data:
  redis.conf: |
    pidfile /var/lib/redis/redis.pid
    dir /var/lib/redis
    port 6379
    bind 0.0.0.0
    appendonly yes
    protected-mode no
    requirepass 123456
apiVersion: v1
kind: ConfigMap
---
metadata:
  name: busybox
spec:
  containers:
    - name: test
      image: busybox
      command:
        - /bin/sh
        - -c
        - cat /tmp/config/redis.conf
      volumeMounts:
        - name: config-volume
          mountPath: /tmp/config/redis.conf
          subPath: redis.conf
  volumes:
    - name: config-volume
      configMap:
        name: test
apiVersion: v1
kind: Pod			
			
		

运行结果

			
configmap "test" deleted
pod "busybox" deleted
configmap/test created
pod/busybox created
======================================== Busybox ========================================
pidfile /var/lib/redis/redis.pid
dir /var/lib/redis
port 6379
bind 0.0.0.0
appendonly yes
protected-mode no
requirepass 123456			
			
		

4.2.5. Pod 挂载 ConfigMap 设置环境变量

			
import os,sys
sys.path.insert(0, '/Users/neo/workspace/devops')
from netkiller.kubernetes import *

print("=" * 40, "ConfigMap", "=" * 40)
config = ConfigMap()
config.apiVersion('v1')
config.metadata().name('test').namespace('default')
config.data({'host':'localhost','port':'3306','user':'root','pass':'123456'})
config.from_file('nginx.conf', '/etc/nginx/nginx.conf').from_env_file('redis.conf','redis.env')

pod = Pod()
pod.metadata().name('busybox')
pod.spec().containers().name('test').image('busybox').command([ "/bin/sh","-c","env" ]).env([{'name':'DBHOST','valueFrom':{'configMapKeyRef':{'name':'test','key':'host'}}}])

compose = Compose('development')
compose.add(config)
compose.add(pod)
compose.delete()
compose.create()

print("=" * 40, "Busybox", "=" * 40)
os.system("sleep 10 && kubectl logs busybox")			
			
		

输出结果

			
configmap "test" deleted
pod "busybox" deleted
configmap/test created
pod/busybox created
======================================== Busybox ========================================
KUBERNETES_PORT=tcp://10.43.0.1:443
KUBERNETES_SERVICE_PORT=443
HOSTNAME=busybox
SHLVL=1
HOME=/root
DBHOST=localhost
KUBERNETES_PORT_443_TCP_ADDR=10.43.0.1
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
KUBERNETES_PORT_443_TCP_PORT=443
KUBERNETES_PORT_443_TCP_PROTO=tcp
KUBERNETES_SERVICE_PORT_HTTPS=443
KUBERNETES_PORT_443_TCP=tcp://10.43.0.1:443
KUBERNETES_SERVICE_HOST=10.43.0.1
PWD=/			
			
		

DBHOST=localhost

4.2.6. Ingress 挂载 SSL 证书

准备 SSL 证书,如果你没有,可以使用下面命令创建

			
制作私钥证书
openssl genrsa -out ingress.key 2048

制作公钥证书
openssl req -new -x509 -days 3650 -key ingress.key -out ingress.crt

mkdir -p cert/private
cp ingress.crt cert/netkiller.cn.crt
cp ingress.key cert/private/netkiller.cn.key
			
		

编排脚本

			
import sys
sys.path.insert(0, '/Users/neo/workspace/devops')
from netkiller.kubernetes import *

namespace = 'default'

# namespace = Namespace()
# namespace.metadata().name(namespace)
# namespace.metadata().namespace(namespace)
# namespace.debug()

secret = Secret('ingress-secret')
secret.metadata().name('tls').namespace(namespace)
# secret.data({'tls.crt':' ','tls.key':' '})
secret.cert('cert/netkiller.cn.crt')
secret.key('cert/private/netkiller.cn.key')
secret.type('kubernetes.io/tls')
# secret.save()
# secret.debug()
# exit() 

service = Service()
service.metadata().name('nginx')
service.metadata().namespace(namespace)
service.spec().selector({'app': 'nginx'})
service.spec().type('NodePort')
service.spec().ports([{
    'name': 'http',
    'protocol': 'TCP',
    'port': 80,
    'targetPort': 80
}])

deployment = Deployment()
deployment.apiVersion('apps/v1')

deployment.metadata().name('nginx').labels(
    {'app': 'nginx'}).namespace(namespace)
deployment.spec().replicas(1)
deployment.spec().selector({'matchLabels': {'app': 'nginx'}})
deployment.spec().template().metadata().labels({'app': 'nginx'})
deployment.spec().template().spec().containers().name('nginx').image(
    'nginx:latest').ports([{
        'containerPort': 80
    }])
# deployment.debug()
# deployment.json()

ingress = Ingress()
ingress.apiVersion('networking.k8s.io/v1')
ingress.metadata().name('nginx')
ingress.metadata().namespace(namespace)
ingress.metadata().annotations({'ingress.kubernetes.io/ssl-redirect': "true"})
ingress.spec().tls([{'hosts':['www.netkiller.cn','admin.netkiller.cn'],'secretName':'tls'}])
ingress.spec().rules([{
    'host': 'www.netkiller.cn',
    'http': {
        'paths': [{
            'path': '/',
            'pathType': 'Prefix',
            'backend': {
                'service': {
                    'name': 'nginx',
                    'port': {
                        'number': 80
                    }
                }
            }
        }]
    }
}])

# ingress.debug()

print("=" * 40, "Compose", "=" * 40)
compose = Compose('development')
# compose.add(namespace)
compose.add(secret)
compose.add(service)
compose.add(deployment)
compose.add(ingress)
# compose.debug()
# compose.save('/tmp/test.yaml')
compose.delete()
compose.create()

print("=" * 40, "Busybox", "=" * 40)
os.system("sleep 5")
for cmd in ['kubectl get secret tls','kubectl get pods','kubectl get service','kubectl get deployment','kubectl get ingress'] :
    os.system(cmd)
    print("-" * 50)

			
		

启动后使用 openssl 检查证书

			
neo@Netkiller-iMac ~> openssl s_client -connect www.netkiller.cn:443
CONNECTED(00000003)
depth=0 CN = TRAEFIK DEFAULT CERT
verify error:num=20:unable to get local issuer certificate
verify return:1
depth=0 CN = TRAEFIK DEFAULT CERT
verify error:num=21:unable to verify the first certificate
verify return:1
---
Certificate chain
 0 s:/CN=TRAEFIK DEFAULT CERT
   i:/CN=TRAEFIK DEFAULT CERT
---
Server certificate
-----BEGIN CERTIFICATE-----
MIIDXjCCAkagAwIBAgIRAPLS5GFlqTUbZuNxXxu9SGEwDQYJKoZIhvcNAQELBQAw
HzEdMBsGA1UEAxMUVFJBRUZJSyBERUZBVUxUIENFUlQwHhcNMjIwMTE0MDQwNDU2
WhcNMjMwMTE0MDQwNDU2WjAfMR0wGwYDVQQDExRUUkFFRklLIERFRkFVTFQgQ0VS
VDCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBALtuaTUNs89KKUm6dG8M
JUcdqsNLsG0a369O+VjSSgJnrYb9BL8ZTCTYTu44y8cepH+mMdq1SVmDpXwyMVPu
CuXYDnrK2n6Zdv9T9K59pKOu08GoRmF7kmxmA8d4UGbDR5D01AEjOLvd8EKzRJqi
tB8KP5KEjdVUQYB7ZUy3EHSsfyM+grN/XbWn0Sfj7VGWnUBS+WG9Huvi+vgHwU5W
r+JL5ojsWw7q6glG45x3iIjqYNaVWqRwuSoH905AIA9Q2mCpRjNNQJL1sUYxHFfd
mYlOW47ovKIw/OR48lqlwZy8/YblDveIn66kEAF7Y3EGDQuUB21lSW6q7qNum7lq
S5MCAwEAAaOBlDCBkTAOBgNVHQ8BAf8EBAMCA7gwEwYDVR0lBAwwCgYIKwYBBQUH
AwEwDAYDVR0TAQH/BAIwADBcBgNVHREEVTBTglE0NWNjOThiNDQ0MTlmOTM2ODcw
YTU5YTZkN2EyZWRhZC5lMWIyMDRmZTVjMTlhZGJjNWE4NjE3NjA0YzkxNGI4OS50
cmFlZmlrLmRlZmF1bHQwDQYJKoZIhvcNAQELBQADggEBAG+BrjgG0Z8j4/G08eCJ
elVpUaxCXzWEC6KgPmQPpgYGh98PcrZNe4E/FnaKJ9pjtA7NpG8Y2Ke+D3D8H+MQ
hutT9+XtGRU93zxpT3SVxJLHQnx3511s0jAfj3sCxyvuv17bT+q8C0KjQf9k6HMT
X/oBsND0HXrDbdsUK4f2sCdmql0CK/uAj0ibjfjajfCc5Ve5hQw1a5x2StCvQZAB
6TO8YQpFR+TeIbyclr++tYLBBocl0E3nXFommYPt2zxiY1K129fNPRfmq+yKbuzV
4u1KLRWIUJnab6Ue7ezJLCNT5T0bVXSG089yeaB/MdPRVkbAMHXF+AxQDUu9iZx+
8Aw=
-----END CERTIFICATE-----
subject=/CN=TRAEFIK DEFAULT CERT
issuer=/CN=TRAEFIK DEFAULT CERT
---
No client certificate CA names sent
Server Temp Key: ECDH, X25519, 253 bits
---
SSL handshake has read 1454 bytes and written 289 bytes
---
New, TLSv1/SSLv3, Cipher is ECDHE-RSA-AES256-GCM-SHA384
Server public key is 2048 bit
Secure Renegotiation IS supported
Compression: NONE
Expansion: NONE
No ALPN negotiated
SSL-Session:
    Protocol  : TLSv1.2
    Cipher    : ECDHE-RSA-AES256-GCM-SHA384
    Session-ID: 0A39917DAE8C45B5495FA7CDEF733CF524A117E070B37428C984550AB9382993
    Session-ID-ctx: 
    Master-Key: F9F5464856CE3D12437AC45843A07732C1A313E99240F6C8AAD6A8BEC957786237846A687B62C5A4A6362FD738B68F2D
    TLS session ticket:
    0000 - ca 1d cc 1f fa ea 48 88-f2 d8 b2 94 ac 32 d0 f4   ......H......2..
    0010 - 4f ad 8c de 17 49 97 c8-7f 73 2d 3d 04 86 86 f0   O....I...s-=....
    0020 - 9c 51 e3 60 50 c6 ab 70-3d a6 8a a5 5c 50 c7 04   .Q.`P..p=...\P..
    0030 - 89 93 89 a6 d5 c5 73 ac-2a 3f f6 1c 7b 26 5f 70   ......s.*?..{&_p
    0040 - 0b 27 ae bd 5b 37 b0 f4-76 79 5d 9d 90 10 f5 24   .'..[7..vy]....$
    0050 - ef 64 04 4b cd ad c3 83-2b f3 a4 37 6a 83 f8 ce   .d.K....+..7j...
    0060 - 6e 18 e3 72 64 a9 c1 6c-7d 24 9a 1d f6 b7 76 d7   n..rd..l}$....v.
    0070 - 68 ee 8f 76 27 06 bf 84-4d 6d 33 f3 b7 c5 4e d4   h..v'...Mm3...N.
    0080 - 32                                                2

    Start Time: 1642133830
    Timeout   : 7200 (sec)
    Verify return code: 21 (unable to verify the first certificate)
---
			
			
		

证书载入正确,就可以使用 curl 命令或者Safari测试了

			
neo@Netkiller-iMac ~> curl https://www.netkiller.cn
			
		

如果是自签名证书,需要使用 -k 参数

			
neo@Netkiller-iMac ~> curl -k https://www.netkiller.cn			
			
		

4.2.7. StatefulSet 部署 Redis

			
import sys
sys.path.insert(0, '/Users/neo/workspace/devops')
from netkiller.kubernetes import *
namespace = 'default'

config = ConfigMap('redis')
config.metadata().name('redis').namespace(namespace).labels({'app': 'redis'})
config.data({'redis.conf': pss('''\
pidfile /var/lib/redis/redis.pid
dir /data
port 6379
bind 0.0.0.0
appendonly yes
protected-mode yes
requirepass passw0rd
maxmemory 2mb
maxmemory-policy allkeys-lru
''')})
# config.debug()


statefulSet = StatefulSet()
statefulSet.metadata().name('redis')
statefulSet.spec().replicas(1)
statefulSet.spec().serviceName('redis')
statefulSet.spec().selector({'matchLabels': {'app': 'redis'}})
statefulSet.spec().template().metadata().labels({'app': 'redis'})
# statefulSet.spec().template().spec().initContainers().name('busybox').image('busybox').command(['sh','-c','mkdir -p /var/lib/redis && echo 2048 > /proc/sys/net/core/somaxconn && echo never > /sys/kernel/mm/transparent_hugepage/enabled']).volumeMounts([
#         {'name': 'data', 'mountPath': '/var/lib/redis'}])
statefulSet.spec().template().spec().containers().name('redis').image(
    'redis:latest').command(['sh', '-c', 'redis-server /usr/local/etc/redis.conf']).ports([{
        'name': 'redis',
        'protocol': 'TCP',
        'containerPort': 6379
    }]).volumeMounts([
        {'name': 'config', 'mountPath': '/usr/local/etc/redis.conf',
            'subPath': 'redis.conf'},
        {'name': 'data', 'mountPath': '/data',
            'subPath': 'default.conf'}
    ]).imagePullPolicy('IfNotPresent')
statefulSet.spec().template().spec().volumes().name(
    'config').configMap({'name': 'redis'})
statefulSet.spec().template().spec().volumes().name(
    'data').hostPath({'path': '/var/lib/redis'})
# statefulSet.debug()
# exit()

service = Service()
service.metadata().name('redis')
service.metadata().namespace(namespace).labels({'app': 'redis'})
service.spec().selector({'app': 'redis'})
# service.spec().type('NodePort')
service.spec().ports([{
    # 'name': 'redis',
    # 'protocol': 'TCP',
    'port': 6379,
    'targetPort': 6379
}])

ingress = IngressRouteTCP()
ingress.metadata().name('redis')
ingress.metadata().namespace(namespace)
ingress.spec().entryPoints(['redis'])
ingress.spec().routes([{
    'match': 'HostSNI(`*`)',
    'services': [{
        'name': 'redis',
        'port': 6379
    }]
}])
# ingress.debug()

print("=" * 40, "Compose", "=" * 40)
compose = Compose('development')
# compose.add(namespace)
compose.add(config)
compose.add(statefulSet)
compose.add(service)
compose.add(ingress)
compose.debug()
# compose.save()
compose.delete()
compose.create()
			
		

检查 redis 是否工作正常

			
neo@Netkiller-iMac ~> kubectl get pods
NAME                    READY   STATUS             RESTARTS   AGE
nginx-88c84c4d8-gb5rg   1/1     Running            1          3d16h
redis-0                 1/1     Running            0          14h
busybox                 0/1     CrashLoopBackOff   256        21h

neo@Netkiller-iMac ~> kubectl exec -it "redis-0" bash
kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl exec [POD] -- [COMMAND] instead.
root@redis-0:/data# redis-cli -a passw0rd
Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.
127.0.0.1:6379> set nickname netkiller
OK
127.0.0.1:6379> get nickname
"netkiller"
127.0.0.1:6379> 
			
		

4.2.8. StorageClass

		
storageClass = StorageClass('local-storage')
storageClass.metadata().name('local-storage')
storageClass.provisioner('kubernetes.io/no-provisioner')
storageClass.volumeBindingMode('WaitForFirstConsumer')
# storageClass.json()
# storageClass.debug()		
		
		
		
persistentVolume = PersistentVolume()
persistentVolume.metadata().name('redis').annotations({'pv.kubernetes.io/provisioned-by': 'rancher.io/local-path'})
persistentVolume.spec().capacity({'storage': '1Gi'})
persistentVolume.spec().accessModes(['ReadWriteOnce'])
persistentVolume.spec().persistentVolumeReclaimPolicy('Retain')
persistentVolume.spec().storageClassName('local-path')
# persistentVolume.spec().local('/opt/redis')
persistentVolume.spec().hostPath({'path': '/var/lib/rancher/k3s/storage/redis', 'type': 'DirectoryOrCreate'})
persistentVolume.spec().nodeAffinity({
    'required':{
      'nodeSelectorTerms':[
       {'matchExpressions':[
         {'key': 'kubernetes.io/hostname',
          'operator': 'In',
          'values':['node1']
            }]
        }]
    }
})		
		
		

4.2.9. 部署 MySQL 到 kubernetes

			
from netkiller.kubernetes import *
namespace = 'default'

config = ConfigMap('mysql')
config.metadata().name('mysql').namespace(namespace).labels({'app': 'mysql'})
config.data({'mysql.cnf': pss('''\
[mysqld]
max_connections=2048
max_execution_time=120
connect_timeout=120
max_allowed_packet=32M
net_read_timeout=120
net_write_timeout=120
# --wait_timeout=60
# --interactive_timeout=60

sql_mode=STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION
character-set-server=utf8mb4
collation-server=utf8mb4_general_ci
explicit_defaults_for_timestamp=true
max_execution_time=0
''')})
config.data({'MYSQL_ROOT_PASSWORD': '123456', 'MYSQL_DATABASE': 'test',
            'MYSQL_USER': 'test', 'MYSQL_PASSWORD': 'test'})
# config.debug()


storageClassName = 'manual'
persistentVolume = PersistentVolume('mysql-pv')
persistentVolume.metadata().name(
    'mysql-pv').labels({'type': 'local'})
persistentVolume.spec().storageClassName(storageClassName)
persistentVolume.spec().capacity({'storage': '2Gi'}).accessModes(
    ['ReadWriteOnce']).hostPath({'path': "/var/lib/mysql"})
persistentVolume.debug()

persistentVolumeClaim = PersistentVolumeClaim('mysql-pvc')
persistentVolumeClaim.metadata().name('mysql-pvc')
persistentVolumeClaim.spec().storageClassName(storageClassName)
persistentVolumeClaim.spec().resources({'requests': {'storage':'2Gi'}})
persistentVolumeClaim.spec().accessModes(
    ['ReadWriteOnce'])
persistentVolumeClaim.debug()
# exit()


statefulSet = StatefulSet()
statefulSet.metadata().name('mysql')
statefulSet.spec().replicas(1)
statefulSet.spec().serviceName('mysql')
statefulSet.spec().selector({'matchLabels': {'app': 'mysql'}})
statefulSet.spec().template().metadata().labels({'app': 'mysql'})
statefulSet.spec().replicas(1)
statefulSet.spec().template().spec().containers().name('mysql').image(
    'mysql:latest').ports([{
        'name': 'mysql',
        'protocol': 'TCP',
        'containerPort': 3306
    }]).env([{'name': 'MYSQL_ROOT_PASSWORD', 'value': '123456'}]).volumeMounts([
        {'name': 'config', 'mountPath': '/etc/mysql/conf.d/mysql.cnf',
            'subPath': 'mysql.cnf'},
        {'name': 'data', 'mountPath': '/var/lib/mysql'}
    ]).imagePullPolicy('IfNotPresent')
statefulSet.spec().template().spec().volumes().name(
    'config').configMap({'name': 'mysql'})
statefulSet.spec().template().spec().volumes().name(
    'data').persistentVolumeClaim('mysql-pvc')
# statefulSet.debug()

service = Service()
service.metadata().name('mysql')
service.metadata().namespace(namespace).labels({'app': 'mysql'})
service.spec().selector({'app': 'mysql'})
service.spec().type('NodePort')
service.spec().ports([{
    'name': 'mysql',
    'protocol': 'TCP',
    'port': 3306,
    'targetPort': 3306
}])

print("=" * 40, "Compose", "=" * 40)
compose = Compose('development')
# compose.add(namespace)
compose.add(config)
compose.add(persistentVolume)
compose.add(persistentVolumeClaim)
compose.add(statefulSet)
compose.add(service)
compose.debug()
# compose.save()
compose.delete()
compose.create()
			
		

			
neo@Netkiller-iMac ~> kubectl get pods
NAME                    READY   STATUS             RESTARTS   AGE
nginx-88c84c4d8-gb5rg   1/1     Running            1          4d
redis-0                 1/1     Running            0          22h
mysql-0                 1/1     Running            0          9m11s
busybox                 0/1     CrashLoopBackOff   346        29h

neo@Netkiller-iMac ~> kubectl get service
NAME         TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)          AGE
kubernetes   ClusterIP   10.43.0.1       <none>        443/TCP          12d
nginx        NodePort    10.43.125.134   <none>        80:31656/TCP     4d
redis        ClusterIP   10.43.91.64     <none>        6379/TCP         22h
mysql        NodePort    10.43.198.188   <none>        3306:32322/TCP   9m22s
 
neo@Netkiller-iMac ~ [1]> kubectl exec mysql-0 -it bash
kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl exec [POD] -- [COMMAND] instead.

root@mysql-0:/# mysql -uroot -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 9
Server version: 8.0.27 MySQL Community Server - GPL

Copyright (c) 2000, 2021, Oracle and/or its affiliates.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| sys                |
+--------------------+
4 rows in set (0.00 sec)

mysql> create database test;
Query OK, 1 row affected (0.16 sec)

mysql> exit
Bye
root@mysql-0:/#			
			
		

4.2.10. MongoDB

			
import sys
sys.path.insert(0, '/Users/neo/workspace/devops')
from netkiller.kubernetes import *
namespace = 'default'

config = ConfigMap('mongo')
config.metadata().name('mongo').namespace(namespace).labels({'app': 'mongo'})
config.data({'mongod.cnf': pss('''\
# mongod.conf

# for documentation of all options, see:
#   http://docs.mongodb.org/manual/reference/configuration-options/

# Where and how to store data.
storage:
  dbPath: /var/lib/mongo
  journal:
    enabled: true
#  engine:
#  wiredTiger:

# where to write logging data.
systemLog:
  destination: file
  logAppend: true
  path: /var/log/mongodb/mongod.log

# network interfaces
net:
  port: 27017
  bindIp: 0.0.0.0


# how the process runs
processManagement:
  timeZoneInfo: /usr/share/zoneinfo

security:
  authorization: enabled

#operationProfiling:

#replication:

#sharding:

## Enterprise-Only Options:

#auditLog:

#snmp:
''')})
config.data({'mongo_ROOT_PASSWORD': '123456', 'mongo_DATABASE': 'test',
            'mongo_USER': 'test', 'mongo_PASSWORD': 'test'})
# config.debug()


storageClassName = 'manual'
persistentVolume = PersistentVolume('mongo-pv')
persistentVolume.metadata().name(
    'mongo-pv').labels({'type': 'local'})
persistentVolume.spec().storageClassName(storageClassName)
persistentVolume.spec().capacity({'storage': '2Gi'}).accessModes(
    ['ReadWriteOnce']).hostPath({'path': "/var/lib/mongodb"})
persistentVolume.debug()

persistentVolumeClaim = PersistentVolumeClaim('mongo-pvc')
persistentVolumeClaim.metadata().name('mongo-pvc')
persistentVolumeClaim.spec().storageClassName(storageClassName)
persistentVolumeClaim.spec().resources({'requests': {'storage':'2Gi'}})
persistentVolumeClaim.spec().accessModes(
    ['ReadWriteOnce'])
persistentVolumeClaim.debug()
# exit()


statefulSet = StatefulSet()
statefulSet.metadata().name('mongo')
statefulSet.spec().replicas(1)
statefulSet.spec().serviceName('mongo')
statefulSet.spec().selector({'matchLabels': {'app': 'mongo'}})
statefulSet.spec().template().metadata().labels({'app': 'mongo'})
statefulSet.spec().replicas(1)
statefulSet.spec().template().spec().containers().name('mongo').image(
    'mongo:latest').ports([{
        'name': 'mongo',
        'protocol': 'TCP',
        'containerPort': 27017
    }]).env([
        {'name': 'TZ', 'value': 'Asia/Shanghai'},
        {'name': 'LANG', 'value': 'en_US.UTF-8'},
        {'name': 'MONGO_INITDB_DATABASE', 'value': 'admin'},
        {'name': 'MONGO_INITDB_ROOT_USERNAME', 'value': 'admin'},
        {'name': 'MONGO_INITDB_ROOT_PASSWORD', 'value': 'A8nWiX7vitsqOsqoWVnTtv4BDG6uMbexYX9s'}
    ]).volumeMounts([
        {'name': 'config', 'mountPath': '/etc/mongod.conf',
            'subPath': 'mongo.cnf'},
        {'name': 'data', 'mountPath': '/var/lib/mongodb'}
    ]).imagePullPolicy('IfNotPresent')
statefulSet.spec().template().spec().volumes().name(
    'config').configMap({'name': 'mongo'})
statefulSet.spec().template().spec().volumes().name(
    'data').persistentVolumeClaim('mongo-pvc')
# statefulSet.debug()
# exit()

service = Service()
service.metadata().name('mongo')
service.metadata().namespace(namespace).labels({'app': 'mongo'})
service.spec().selector({'app': 'mongo'})
service.spec().type('NodePort')
service.spec().ports([{
    'name': 'mongo',
    'protocol': 'TCP',
    'port': 27017,
    'targetPort': 27017
}])

ingress = IngressRouteTCP()
ingress.metadata().name('mongo')
ingress.metadata().namespace(namespace)
ingress.spec().entryPoints(['mongo'])
ingress.spec().routes([{
    'match': 'HostSNI(`*`)',
    'services': [{
        'name': 'mongo',
        'port': 27017,
    }]
}])
# ingress.debug()

print("=" * 40, "Compose", "=" * 40)
compose = Compose('development')
# compose.add(namespace)
compose.add(config)
compose.add(persistentVolume)
compose.add(persistentVolumeClaim)
compose.add(statefulSet)
compose.add(service)
compose.add(ingress)
compose.debug()
# compose.save()
compose.delete()
compose.create()
			
		

进入容器,检查是否工作正常

			
neo@Netkiller-iMac ~> kubectl get all
NAME                        READY   STATUS             RESTARTS   AGE
pod/mongo-0                 1/1     Running            0          164m
pod/mysql-0                 1/1     Running            0          149m
pod/nginx-88c84c4d8-dwz9x   1/1     Running            0          147m
pod/redis-0                 1/1     Running            0          132m
pod/busybox                 0/1     CrashLoopBackOff   436        2d2h

NAME                 TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)           AGE
service/kubernetes   ClusterIP   10.43.0.1       <none>        443/TCP           13d
service/mongo        NodePort    10.43.135.49    <none>        27017:32598/TCP   164m
service/mysql        NodePort    10.43.186.2     <none>        3306:32440/TCP    149m
service/nginx        NodePort    10.43.235.124   <none>        80:32124/TCP      147m
service/redis        NodePort    10.43.134.73    <none>        6379:30376/TCP    133m

NAME                    READY   UP-TO-DATE   AVAILABLE   AGE
deployment.apps/nginx   1/1     1            1           147m

NAME                              DESIRED   CURRENT   READY   AGE
replicaset.apps/nginx-88c84c4d8   1         1         1       147m

NAME                     READY   AGE
statefulset.apps/mongo   1/1     164m
statefulset.apps/mysql   1/1     149m
statefulset.apps/redis   1/1     133m

neo@Netkiller-iMac ~> kubectl exec -it mongo-0 -- bash
root@mongo-0:/# ps ax
  PID TTY      STAT   TIME COMMAND
    1 ?        Ssl    1:43 mongod --auth --bind_ip_all
  133 pts/0    Ss     0:00 bash
  141 pts/0    R+     0:00 ps ax


root@mongo-0:/# mongosh mongodb://admin:A8nWiX7vitsqOsqoWVnTtv4BDG6uMbexYX9s@localhost/admin


Current Mongosh Log ID:	61e7acde14e7858c6d5dfcf6
Connecting to:		mongodb://<credentials>@localhost/admin?directConnection=true&serverSelectionTimeoutMS=2000
Using MongoDB:		5.0.5
Using Mongosh:		1.1.7

For mongosh info see: https://docs.mongodb.com/mongodb-shell/


To help improve our products, anonymous usage data is collected and sent to MongoDB periodically (https://www.mongodb.com/legal/privacy-policy).
You can opt-out by running the disableTelemetry() command.

------
   The server generated these startup warnings when booting:
   2022-01-19T11:30:22.969+08:00: Using the XFS filesystem is strongly recommended with the WiredTiger storage engine. See http://dochub.mongodb.org/core/prodnotes-filesystem
------

admin> 
Browserslist: caniuse-lite is outdated. Please run:
npx browserslist@latest --update-db

Why you should do it regularly:
https://github.com/browserslist/browserslist#browsers-data-updating

admin> use test
switched to db test
test> db.createCollection("mycollection")	
{ ok: 1 }
test> exit
root@mongo-0:/# exit
exit

			
		

端口转发

			
neo@Netkiller-iMac ~> kubectl port-forward --address 0.0.0.0 service/mongo 27017
Forwarding from 0.0.0.0:27017 -> 27017
			
		

远程登陆

			
[root@gitlab ~]# mongo mongodb://admin:A8nWiX7vitsqOsqoWVnTtv4BDG6uMbexYX9s@192.168.30.131/admin
MongoDB shell version v5.0.5
connecting to: mongodb://192.168.30.131:27017/admin?compressors=disabled&gssapiServiceName=mongodb
Implicit session: session { "id" : UUID("22b2d5ec-9643-492e-93df-12bb81ba21f4") }
MongoDB server version: 5.0.5
================
Warning: the "mongo" shell has been superseded by "mongosh",
which delivers improved usability and compatibility.The "mongo" shell has been deprecated and will be removed in
an upcoming release.
For installation instructions, see
https://docs.mongodb.com/mongodb-shell/install/
================
---
The server generated these startup warnings when booting: 
        2022-01-19T11:30:22.969+08:00: Using the XFS filesystem is strongly recommended with the WiredTiger storage engine. See http://dochub.mongodb.org/core/prodnotes-filesystem
---
---
        Enable MongoDB's free cloud-based monitoring service, which will then receive and display
        metrics about your deployment (disk utilization, CPU, operation statistics, etc).

        The monitoring data will be available on a MongoDB website with a unique URL accessible to you
        and anyone you share the URL with. MongoDB may use this information to make product
        improvements and to suggest MongoDB products and deployment options to you.

        To enable free monitoring, run the following command: db.enableFreeMonitoring()
        To permanently disable this reminder, run the following command: db.disableFreeMonitoring()
---
> show databases
admin   0.000GB
config  0.000GB
local   0.000GB
test    0.000GB
> use test
switched to db test
> show tables
mycollection
> exit
bye			
			
		

4.2.11. Nacos

4.2.11.1. 单节点部署

				
import sys
sys.path.insert(0, '/Users/neo/workspace/devops')
from netkiller.kubernetes import *

namespace = 'default'

# namespace = Namespace()
# namespace.metadata().name(namespace)
# namespace.metadata().namespace(namespace)
# namespace.debug()

config = ConfigMap('nacos')
config.apiVersion('v1')
config.metadata().name('nacos').namespace(namespace)
config.from_file('custom.properties', 'nacos/init.d/custom.properties')
config.data({'application.properties':pss('''\
    # spring
    server.servlet.contextPath=/nacos
    server.contextPath=/nacos
    server.port=8848
    spring.datasource.platform=mysql
    # nacos.cmdb.dumpTaskInterval=3600
    # nacos.cmdb.eventTaskInterval=10
    # nacos.cmdb.labelTaskInterval=300
    # nacos.cmdb.loadDataAtStart=false
    db.num=1
    # db.url.0=jdbc:mysql://mysql-0.mysql:3306/nacos?characterEncoding=utf8&connectTimeout=30000&socketTimeout=30000&autoReconnect=true&useSSL=false&serverTimezone=GMT%2B8
    # db.url.1=jdbc:mysql://mysql-0.mysql:3306/nacos?characterEncoding=utf8&connectTimeout=30000&socketTimeout=30000&autoReconnect=true&useSSL=false&serverTimezone=GMT%2B8
    db.url.0=jdbc:mysql://192.168.30.12:3306/nacos?characterEncoding=utf8&connectTimeout=30000&socketTimeout=30000&autoReconnect=true&useSSL=false&serverTimezone=GMT%2B8
    db.url.1=jdbc:mysql://192.168.30.12:3306/nacos?characterEncoding=utf8&connectTimeout=30000&socketTimeout=30000&autoReconnect=true&useSSL=false&serverTimezone=GMT%2B8
    # db.url.1=jdbc:mysql://mysql-0.mysql.default.svc.cluster.local:3306/nacos?characterEncoding=utf8&connectTimeout=3000&socketTimeout=3000&autoReconnect=true&useSSL=false&serverTimezone=Asia/Shanghai
    db.user=nacos
    db.password=nacos
    ### The auth system to use, currently only 'nacos' is supported:
    nacos.core.auth.system.type=nacos


    ### The token expiration in seconds:
    nacos.core.auth.default.token.expire.seconds=${NACOS_AUTH_TOKEN_EXPIRE_SECONDS:18000}

    ### The default token:
    nacos.core.auth.default.token.secret.key=${NACOS_AUTH_TOKEN:SecretKey012345678901234567890123456789012345678901234567890123456789}

    ### Turn on/off caching of auth information. By turning on this switch, the update of auth information would have a 15 seconds delay.
    nacos.core.auth.caching.enabled=${NACOS_AUTH_CACHE_ENABLE:false}
    nacos.core.auth.enable.userAgentAuthWhite=${NACOS_AUTH_USER_AGENT_AUTH_WHITE_ENABLE:false}
    nacos.core.auth.server.identity.key=${NACOS_AUTH_IDENTITY_KEY:serverIdentity}
    nacos.core.auth.server.identity.value=${NACOS_AUTH_IDENTITY_VALUE:security}
    server.tomcat.accesslog.enabled=${TOMCAT_ACCESSLOG_ENABLED:false}
    server.tomcat.accesslog.pattern=%h %l %u %t "%r" %s %b %D
    # default current work dir
    server.tomcat.basedir=
    ## spring security config
    ### turn off security
    nacos.security.ignore.urls=${NACOS_SECURITY_IGNORE_URLS:/,/error,/**/*.css,/**/*.js,/**/*.html,/**/*.map,/**/*.svg,/**/*.png,/**/*.ico,/console-fe/public/**,/v1/auth/**,/v1/console/health/**,/actuator/**,/v1/console/server/**}
    # metrics for elastic search
    management.metrics.export.elastic.enabled=false
    management.metrics.export.influx.enabled=false

    nacos.naming.distro.taskDispatchThreadCount=10
    nacos.naming.distro.taskDispatchPeriod=200
    nacos.naming.distro.batchSyncKeyCount=1000
    nacos.naming.distro.initDataRatio=0.9
    nacos.naming.distro.syncRetryDelay=5000
    nacos.naming.data.warmup=true    
'''    
)})
# config.save()
# config.debug()

# statefulSet = StatefulSet()
deployment = StatefulSet()
deployment.apiVersion('apps/v1')
deployment.metadata().name('nacos').labels(
    {'app': 'nacos'}).namespace(namespace)
deployment.spec().replicas(1)
deployment.spec().serviceName('nacos')
deployment.spec().selector({'matchLabels': {'app': 'nacos'}})
deployment.spec().template().metadata().labels({'app': 'nacos'})
deployment.spec().template().spec().containers().name('nacos').image(
    'nacos/nacos-server:2.0.3').env([
        {'name': 'TZ', 'value': 'Asia/Shanghai'},
        {'name': 'LANG', 'value': 'en_US.UTF-8'},
        {'name': 'PREFER_HOST_MODE', 'value': 'hostname'},
        {'name': 'MODE', 'value': 'standalone'},
        {'name': 'SPRING_DATASOURCE_PLATFORM', 'value': 'mysql'},
        {'name': 'JVM_XMX', 'value': '4g'},
        {'name': 'NACOS_DEBUG', 'value': 'true'},
        {'name': 'TOMCAT_ACCESSLOG_ENABLED', 'value': 'true'},
    ]).ports([
        {'containerPort': 8848},
        {'containerPort': 9848},
        {'containerPort': 9555}
    ]).volumeMounts([
        {'name': 'config', 'mountPath': '/home/nacos/conf/custom.properties', 'subPath': 'custom.properties'},
        {'name': 'config', 'mountPath': '/home/nacos/conf/application.properties', 'subPath': 'application.properties'}
]).resources({'limits':{'memory': "4Gi"}, 'requests': {'memory': "2Gi"}})
# deployment.spec().template().spec().securityContext({'sysctls':[{'name': 'fs.file-max', 'value': '60000'}]})
deployment.spec().template().spec().volumes().name(
    'config').configMap({'name': 'nacos'})
# deployment.debug()
# deployment.json()

service = Service()
service.metadata().name('nacos')
service.metadata().namespace(namespace)
service.spec().selector({'app': 'nacos'})
service.spec().type('ClusterIP')
service.spec().ports([
    {'name': 'http', 'protocol': 'TCP', 'port': 8848, 'targetPort': 8848},
    {'name': 'rpc', 'protocol': 'TCP', 'port': 9848, 'targetPort': 9848},
    # {'name': 'http', 'protocol': 'TCP', 'port': 9555, 'targetPort': 9555}
])

print("=" * 40, "Compose", "=" * 40)
compose = Compose('development')
# compose.add(namespace)
compose.add(config)
compose.add(deployment)
compose.add(service)
# compose.debug()
compose.save()
compose.delete()
compose.create()

print("=" * 40, "Busybox", "=" * 40)
os.system("sleep 5")
for cmd in ['kubectl get secret tls', 'kubectl get configmap', 'kubectl get pods', 'kubectl get service', 'kubectl get deployment', 'kubectl get ingress']:
    os.system(cmd)
    print("-" * 50)
				
				
			

4.2.11.2. 集群部署

				
import sys
sys.path.insert(0, '/Users/neo/workspace/devops')
from netkiller.kubernetes import *

namespace = 'default'

# namespace = Namespace()
# namespace.metadata().name(namespace)
# namespace.metadata().namespace(namespace)
# namespace.debug()

config = ConfigMap('nacos')
config.apiVersion('v1')
config.metadata().name('nacos').namespace(namespace)
config.from_file('custom.properties', 'nacos/init.d/custom.properties')
config.data({'application.properties':pss('''\
    # spring
    server.servlet.contextPath=/nacos
    server.contextPath=/nacos
    server.port=8848
    spring.datasource.platform=mysql
    # nacos.cmdb.dumpTaskInterval=3600
    # nacos.cmdb.eventTaskInterval=10
    # nacos.cmdb.labelTaskInterval=300
    # nacos.cmdb.loadDataAtStart=false
    db.num=1
    # db.url.0=jdbc:mysql://mysql-0.mysql:3306/nacos?characterEncoding=utf8&connectTimeout=30000&socketTimeout=30000&autoReconnect=true&useSSL=false&serverTimezone=GMT%2B8
    # db.url.1=jdbc:mysql://mysql-0.mysql:3306/nacos?characterEncoding=utf8&connectTimeout=30000&socketTimeout=30000&autoReconnect=true&useSSL=false&serverTimezone=GMT%2B8
    # db.url.1=jdbc:mysql://mysql-0.mysql.default.svc.cluster.local:3306/nacos?characterEncoding=utf8&connectTimeout=3000&socketTimeout=3000&autoReconnect=true&useSSL=false&serverTimezone=Asia/Shanghai
    db.user=nacos
    db.password=nacos
    ### The auth system to use, currently only 'nacos' is supported:
    nacos.core.auth.system.type=nacos


    ### The token expiration in seconds:
    nacos.core.auth.default.token.expire.seconds=${NACOS_AUTH_TOKEN_EXPIRE_SECONDS:18000}

    ### The default token:
    nacos.core.auth.default.token.secret.key=${NACOS_AUTH_TOKEN:SecretKey012345678901234567890123456789012345678901234567890123456789}

    ### Turn on/off caching of auth information. By turning on this switch, the update of auth information would have a 15 seconds delay.
    nacos.core.auth.caching.enabled=${NACOS_AUTH_CACHE_ENABLE:false}
    nacos.core.auth.enable.userAgentAuthWhite=${NACOS_AUTH_USER_AGENT_AUTH_WHITE_ENABLE:false}
    nacos.core.auth.server.identity.key=${NACOS_AUTH_IDENTITY_KEY:serverIdentity}
    nacos.core.auth.server.identity.value=${NACOS_AUTH_IDENTITY_VALUE:security}
    server.tomcat.accesslog.enabled=${TOMCAT_ACCESSLOG_ENABLED:false}
    server.tomcat.accesslog.pattern=%h %l %u %t "%r" %s %b %D
    # default current work dir
    server.tomcat.basedir=
    ## spring security config
    ### turn off security
    nacos.security.ignore.urls=${NACOS_SECURITY_IGNORE_URLS:/,/error,/**/*.css,/**/*.js,/**/*.html,/**/*.map,/**/*.svg,/**/*.png,/**/*.ico,/console-fe/public/**,/v1/auth/**,/v1/console/health/**,/actuator/**,/v1/console/server/**}
    # metrics for elastic search
    management.metrics.export.elastic.enabled=false
    management.metrics.export.influx.enabled=false

    nacos.naming.distro.taskDispatchThreadCount=10
    nacos.naming.distro.taskDispatchPeriod=200
    nacos.naming.distro.batchSyncKeyCount=1000
    nacos.naming.distro.initDataRatio=0.9
    nacos.naming.distro.syncRetryDelay=5000
    nacos.naming.data.warmup=true    
'''    
)})
# config.save()
# config.debug()

statefulSet = StatefulSet()
statefulSet = StatefulSet()
statefulSet.apiVersion('apps/v1')
statefulSet.metadata().name('nacos').labels(
    {'app': 'nacos'}).namespace(namespace)
statefulSet.spec().replicas(3)
statefulSet.spec().serviceName('nacos')
statefulSet.spec().selector({'matchLabels': {'app': 'nacos'}})
statefulSet.spec().template().metadata().labels({'app': 'nacos'})
statefulSet.spec().template().spec().containers().name('nacos').image(
    'nacos/nacos-server:latest').env([
        {'name': 'TZ', 'value': 'Asia/Shanghai'},
        {'name': 'LANG', 'value': 'en_US.UTF-8'},
        {'name': 'PREFER_HOST_MODE', 'value': 'hostname'},
        # {'name': 'MODE', 'value': 'standalone'},
        
        {'name': 'MODE', 'value': 'cluster'},
        {'name': 'NACOS_REPLICAS', 'value': '3'},
        {'name': 'NACOS_SERVERS', 'value': 'nacos-0.nacos.default.svc.cluster.local:8848 nacos-1.nacos.default.svc.cluster.local:8848 nacos-2.nacos.default.svc.cluster.local:8848'},


        {'name': 'SPRING_DATASOURCE_PLATFORM', 'value': 'mysql'},
        {'name': 'MYSQL_SERVICE_HOST', 'value': 'mysql-0.mysql.default.svc.cluster.local'},
        {'name': 'MYSQL_SERVICE_PORT', 'value': '3306'},
        {'name': 'MYSQL_SERVICE_DB_NAME', 'value': 'nacos'},
        {'name': 'MYSQL_SERVICE_USER', 'value': 'nacos'},
        {'name': 'MYSQL_SERVICE_PASSWORD', 'value': 'nacos'},
        {'name': 'MYSQL_SERVICE_DB_PARAM', 'value': 'characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useSSL=false&serverTimezone=Asia/Shanghai'},
        {'name': 'JVM_XMX', 'value': '4g'},
        {'name': 'NACOS_DEBUG', 'value': 'true'},
        {'name': 'TOMCAT_ACCESSLOG_ENABLED', 'value': 'true'},
    ]).ports([
        {'containerPort': 8848},
        {'containerPort': 9848},
        {'containerPort': 9555}
    ]).volumeMounts([
        {'name': 'config', 'mountPath': '/home/nacos/conf/custom.properties', 'subPath': 'custom.properties'},
        # {'name': 'config', 'mountPath': '/home/nacos/conf/application.properties', 'subPath': 'application.properties'}
]).resources({'limits':{'memory': "4Gi"}, 'requests': {'memory': "2Gi"}})
# statefulSet.spec().template().spec().securityContext({'sysctls':[{'name': 'fs.file-max', 'value': '60000'}]})
statefulSet.spec().template().spec().volumes().name(
    'config').configMap({'name': 'nacos'})
statefulSet.debug()
# statefulSet.json()

service = Service()
service.metadata().name('nacos')
service.metadata().namespace(namespace)
service.spec().selector({'app': 'nacos'})
service.spec().type('ClusterIP')
service.spec().ports([
    {'name': 'http', 'protocol': 'TCP', 'port': 8848, 'targetPort': 8848},
    {'name': 'rpc', 'protocol': 'TCP', 'port': 9848, 'targetPort': 9848},
    # {'name': 'http', 'protocol': 'TCP', 'port': 9555, 'targetPort': 9555}
])

print("=" * 40, "Compose", "=" * 40)
compose = Compose('development')
# compose.add(namespace)
compose.add(config)
compose.add(statefulSet)
compose.add(service)
# compose.debug()
compose.save()
compose.delete()
compose.create()

print("=" * 40, "Busybox", "=" * 40)
os.system("sleep 5")
for cmd in ['kubectl get secret tls', 'kubectl get configmap', 'kubectl get pods', 'kubectl get service', 'kubectl get statefulset', 'kubectl get ingress']:
    os.system(cmd)
    print("-" * 50)
				
				
			

4.2.11.3. Ingress 部署

				
ingress = Ingress()
ingress.apiVersion('networking.k8s.io/v1')
ingress.metadata().name('nginx')
ingress.metadata().namespace(namespace)
ingress.metadata().annotations({'ingress.kubernetes.io/ssl-redirect': "true"})
ingress.spec().tls(
    [{'hosts': ['www.netkiller.cn', 'job.netkiller.cn','admin.netkiller.cn','nacos.netkiller.cn','test.netkiller.cn','cloud.netkiller.cn'], 'secretName':'tls'}])
ingress.spec().rules([
    {
        'host': 'www.netkiller.cn',
        'http': {
            'paths': [{
                'path': '/',
                'pathType': 'Prefix',
                'backend': {
                    'service': {
                        'name': 'nginx',
                        'port': {
                            'number': 80
                        }
                    }
                }
            }]
        },
    },
    {
        'host': 'nacos.netkiller.cn',
        'http': {
            'paths': [{
                'path': '/',
                'pathType': 'Prefix',
                'backend': {
                    'service': {
                        'name': 'nacos',
                        'port': {
                            'number': 8848
                        }
                    }
                }
            }]
        },
    }
])				
				
			

测试地址 https://nacos.netkiller.cn/nacos/

4.2.12. Redis

		
import sys, os

sys.path.insert(0, '/Users/neo/workspace/devops')
from netkiller.kubernetes import *

namespace = 'default'

config = ConfigMap('redis')
config.apiVersion('v1')
config.metadata().name('redis').namespace(namespace)
# config.from_file('redis.conf', 'redis.conf')
config.data({
    'redis.conf':
    pss('''\
    pidfile /var/lib/redis/redis.pid
    dir /data
    port 6379
    bind 0.0.0.0
    appendonly yes
    protected-mode yes
    requirepass passw0rd
    maxmemory 2mb
    maxmemory-policy allkeys-lru  
''')
})

# config.debug()

persistentVolumeClaim = PersistentVolumeClaim()
persistentVolumeClaim.metadata().name('redis')
# persistentVolumeClaim.metadata().labels({'app': 'redis', 'type': 'longhorn'})
# persistentVolumeClaim.spec().storageClassName('longhorn')
persistentVolumeClaim.spec().storageClassName('local-path')
persistentVolumeClaim.spec().accessModes(['ReadWriteOnce'])
persistentVolumeClaim.spec().resources({'requests': {'storage': '2Gi'}})

limits = {
    'limits': {
        'cpu': '200m',
        'memory': '2Gi'
    },
    'requests': {
        'cpu': '200m',
        'memory': '1Gi'
    }
}

livenessProbe = {
    'tcpSocket': {
        'port': 6379
    },
    'initialDelaySeconds': 30,
    'failureThreshold': 3,
    'periodSeconds': 10,
    'successThreshold': 1,
    'timeoutSeconds': 5
}
readinessProbe = {
    'tcpSocket': {
        'port': 6379
    },
    'initialDelaySeconds': 5,
    'failureThreshold': 3,
    'periodSeconds': 10,
    'successThreshold': 1,
    'timeoutSeconds': 5
}

statefulSet = StatefulSet()
statefulSet.metadata().name('redis').labels({'app': 'redis'})
statefulSet.spec().replicas(1)
statefulSet.spec().serviceName('redis')
statefulSet.spec().selector({'matchLabels': {'app': 'redis'}})
statefulSet.spec().template().metadata().labels({'app': 'redis'})
# statefulSet.spec().template().spec().nodeName('master')
statefulSet.spec().template().spec().containers(
).name('redis').image('redis:latest').ports([{
    'containerPort': 6379
}]).volumeMounts([
    {
        'name': 'data',
        'mountPath': '/data'
    },
    {
        'name': 'config',
        'mountPath': '/usr/local/etc/redis.conf',
        'subPath': 'redis.conf'
    },
]).resources(None).livenessProbe(livenessProbe).readinessProbe(readinessProbe)
# .command(            ["sh -c redis-server /usr/local/etc/redis.conf"])
statefulSet.spec().template().spec().volumes([{
    'name': 'data',
    'persistentVolumeClaim': {
        'claimName': 'redis'
    }
}, {
    'name': 'config',
    'configMap': {
        'name': 'redis'
    }
}])
# statefulSet.spec().volumeClaimTemplates([{
# 	'metadata':{'name': 'data'},
#     'spec':{
#       'accessModes': [ "ReadWriteOnce" ],
#       'storageClassName': "local-path",
#       'resources':{'requests':{'storage': '2Gi'}}
# 	}
# }])

service = Service()
service.metadata().name('redis')
service.metadata().namespace(namespace)
service.spec().selector({'app': 'redis'})
service.spec().type('NodePort')
service.spec().ports([{
    'name': 'redis',
    'protocol': 'TCP',
    'port': 6379,
    'targetPort': 6379
}])
# service.debug()

compose = Compose('development')
compose.add(config)
compose.add(persistentVolumeClaim)
compose.add(statefulSet)
compose.add(service)
# compose.debug()

# kubeconfig = '/Volumes/Data/kubernetes/test'
kubeconfig = os.path.expanduser('~/workspace/ops/k3s.yaml')

kubernetes = Kubernetes(kubeconfig)
kubernetes.compose(compose)
kubernetes.main()
		
		

4.2.13. Kubernetes 部署 kube-explorer 图形化界面

		
import os
import sys
import time

sys.path.insert(0, '/Users/neo/workspace/devops')

from netkiller.kubernetes import *

namespace = 'default'
name = 'kube-explorer'
labels = {'app': name}
annotations = {}
replicas = 1
containerPort = 80
image = 'cnrancher/kube-explorer:latest'
monitor = '/dashboard'
livenessProbe = {}
readinessProbe = {}
limits = {}

compose = Compose('test', 'k3s.yaml')

config = ConfigMap()
config.metadata().name(name).namespace(namespace)
config.from_file('k3s.yaml', 'k3s.yaml')
compose.add(config)

deployment = Deployment()
deployment.metadata().name(name).labels(labels).namespace(namespace)
deployment.metadata().annotations(annotations)
deployment.spec().replicas(replicas)
deployment.spec().progressDeadlineSeconds(10)
deployment.spec().revisionHistoryLimit(10)
deployment.spec().selector({'matchLabels': {'app': name}})
# deployment.spec().strategy().type('RollingUpdate').rollingUpdate(1, 0)
deployment.spec().template().metadata().labels({'app': name})

livenessProbe = {
    'failureThreshold': 3,
    'httpGet': {
        'path': monitor,
        'port': containerPort,
        'scheme': 'HTTP'
    },
    'initialDelaySeconds': 60,
    'periodSeconds': 10,
    'successThreshold': 1,
    'timeoutSeconds': 5
}
readinessProbe = {
    'failureThreshold': 3,
    'httpGet': {
        'path': monitor,
        'port': containerPort,
        'scheme': 'HTTP'
    },
    'initialDelaySeconds': 30,
    'periodSeconds': 10,
    'successThreshold': 1,
    'timeoutSeconds': 5
}

# limits = {'limits': {
# 	# 'cpu': '500m',
# 	'memory': '1Gi'}, 'requests': {
# 		# 'cpu': '500m',
# 	'memory': '1Gi'}}

deployment.spec().template().spec().containers().name(name).image(image).ports(
    [{
        'containerPort': containerPort
    }]).imagePullPolicy('IfNotPresent').volumeMounts([
        {
            'name': 'config',
            'mountPath': '/etc/rancher/k3s/k3s.yaml',
            'subPath': 'k3s.yaml'
        },
    ]).resources(limits).livenessProbe(livenessProbe).readinessProbe(
        readinessProbe).env([
            # {
            #     'name': 'CONTEXT',
            #     'value': '/dashboard'
            # },
            {
                'name': 'KUBECONFIG',
                'value': '/etc/rancher/k3s/k3s.yaml'
            },
        ]).command([
            'kube-explorer', '--kubeconfig=/etc/rancher/k3s/k3s.yaml',
            '--http-listen-port=80', '--https-listen-port=0'
        ])
# ,'--ui-path=/dashboard'
# --context value              [$CONTEXT]
deployment.spec().template().spec().restartPolicy(Define.restartPolicy.Always)
# deployment.spec().template().spec().nodeSelector({'group': 'backup'})
# deployment.spec().template().spec().dnsPolicy(Define.dnsPolicy.ClusterFirst)
deployment.spec().template().spec().volumes([{
    'name': 'config',
    'configMap': {
        'name': name
    }
}])
compose.add(deployment)

service = Service()
service.metadata().namespace(namespace)
service.spec().selector({'app': name})
service.metadata().name(name)
service.spec().type(Define.Service.ClusterIP)
service.spec().ports({
    'name': 'http',
    'protocol': 'TCP',
    'port': 80,
    'targetPort': containerPort
})
compose.add(service)

ingress = Ingress()
ingress.apiVersion('networking.k8s.io/v1')
ingress.metadata().name(name)
ingress.metadata().namespace(namespace)
# ingress.metadata().annotations({'kubernetes.io/ingress.class': 'nginx'})
pathType = Define.Ingress.pathType.Prefix

ingress.spec().rules([{
    # 'host': vhost['host'],
    'http': {
        'paths': [{
            'path': '/dashboard/',
            'pathType': pathType,
            'backend': {
                'service': {
                    'name': name,
                    'port': {
                        'number': 80
                    }
                }
            }
        }, {
            'path': '/v1/',
            'pathType': pathType,
            'backend': {
                'service': {
                    'name': name,
                    'port': {
                        'number': 80
                    }
                }
            }
        }, {
            'path': '/k8s/',
            'pathType': pathType,
            'backend': {
                'service': {
                    'name': name,
                    'port': {
                        'number': 80
                    }
                }
            }
        }, {
            'path': '/apis/',
            'pathType': pathType,
            'backend': {
                'service': {
                    'name': name,
                    'port': {
                        'number': 80
                    }
                }
            }
        }, {
            'path': '/api/',
            'pathType': pathType,
            'backend': {
                'service': {
                    'name': name,
                    'port': {
                        'number': 80
                    }
                }
            }
        }]
    }
}])

compose.add(ingress)

kubernetes = Kubernetes()
kubernetes.compose(compose)

# kubernetes.debug()
# kubernetes.environment({'test': 'k3s.yaml', 'grey': 'grey.yaml'})
kubernetes.main()		
		
		

4.2.14. ELK

4.2.14.1. Elasticsearch

			
from doctest import master
import sys, os

sys.path.insert(0, '/Users/neo/workspace/devops')
from netkiller.kubernetes import *

# https://blog.csdn.net/weihua831/article/details/126172591
# https://www.jianshu.com/p/05c93cf45971

namespace = 'default'
# image = 'docker.elastic.co/elasticsearch/elasticsearch:8.4.1'
image = 'elasticsearch:8.4.1'

compose = Compose('development')

config = ConfigMap('elasticsearch')
config.apiVersion('v1')
config.metadata().name('elasticsearch').namespace(namespace).labels({
    'app':
    'elasticsearch',
    'role':
    'master'
})
# config.from_file('redis.conf', 'redis.conf')
config.data({
    'elasticsearch.yml':
    pss('''\
cluster.name: kubernetes-cluster
node.name: ${HOSTNAME}
discovery.seed_hosts: 
  - elasticsearch-master-0
cluster.initial_master_nodes: 
  - elasticsearch-master-0.elasticsearch.default.svc.cluster.local
  - elasticsearch-data-0.elasticsearch-data.default.svc.cluster.local
  - elasticsearch-data-1.elasticsearch-data.default.svc.cluster.local
  - elasticsearch-data-2.elasticsearch-data.default.svc.cluster.local

network.host: 0.0.0.0
transport.profiles.default.port: 9300

xpack.security.enabled: false
xpack.monitoring.collection.enabled: true
''')
})
config.debug()
compose.add(config)

service = Service()
service.metadata().name('elasticsearch')
service.metadata().namespace(namespace)
service.spec().selector({'app': 'elasticsearch', 'role': 'master'})
# service.spec().type('NodePort')
service.spec().ports([{
    'name': 'restful',
    'protocol': 'TCP',
    'port': 9200,
    'targetPort': 9200
}, {
    'name': 'transport',
    'protocol': 'TCP',
    'port': 9300,
    'targetPort': 9300
}])
# service.debug()
compose.add(service)

service = Service()
service.metadata().name('elasticsearch-data').labels({
    'app': 'elasticsearch',
    'role': 'data'
})
service.metadata().namespace(namespace)
service.spec().selector({'app': 'elasticsearch', 'role': 'data'})
# service.spec().type('NodePort')
service.spec().ports([
    # {'name': 'restful', 'protocol': 'TCP', 'port': 9200, 'targetPort': 9200},
    {
        'name': 'transport',
        'protocol': 'TCP',
        'port': 9300,
        'targetPort': 9300
    }
])
# service.debug()
compose.add(service)

limits = {
    'limits': {
        # 'cpu': '500m',
        'memory': '1Gi'
    },
    'requests': {
        # 'cpu': '500m',
        'memory': '1Gi'
    }
}

env = [
    {
        'name': 'TZ',
        'value': 'Asia/Shanghai'
    },
    {
        'name': 'LANG',
        'value': 'en_US.UTF-8'
    },
    {
        'name': 'cluster.name',
        'value': 'kubernetes-cluster'
    },
    {
        'name': 'node.name',
        'valueFrom': {
            'fieldRef': {
                'fieldPath': 'metadata.name'
            }
        }
    },
    {
        'name': 'cluster.initial_master_nodes',
        'value': 'elasticsearch-master-0,elasticsearch-master-1'
    },
    {
        'name':
        'discovery.seed_hosts',
        'value':
        'elasticsearch-master-0.elasticsearch.default.svc.cluster.local,elasticsearch-data-0.elasticsearch-data.default.svc.cluster.local,elasticsearch-data-1.elasticsearch-data.default.svc.cluster.local,elasticsearch-data-2.elasticsearch-data.default.svc.cluster.local'
    },
    {
        'name': 'xpack.security.enabled',
        'value': 'false'
    },
    {
        'name': 'ES_JAVA_OPTS',
        'value': '-Xms2048m -Xmx2048m'
    },
    {
        'name': 'RLIMIT_MEMLOCK',
        'value': 'unlimited'
    },
]

deployment = StatefulSet()
deployment.metadata().name('elasticsearch-master').labels({
    'app': 'elasticsearch',
    'role': 'master'
}).annotations({
    # 'security.kubernetes.io/sysctls': 'vm.swappiness=0',
    'security.kubernetes.io/sysctls': 'vm.max_map_count=262144',
    # 'security.kubernetes.io/sysctls': 'vm.overcommit_memory=1'
})
deployment.spec().replicas(2).revisionHistoryLimit(10)
deployment.spec().serviceName('elasticsearch')
deployment.spec().selector(
    {'matchLabels': {
        'app': 'elasticsearch',
        'role': 'master'
    }})
deployment.spec().template().metadata().labels({
    'app': 'elasticsearch',
    'role': 'master'
})
deployment.spec().template().spec().initContainers(
).name('sysctl').image(image).imagePullPolicy('IfNotPresent').securityContext({
    'privileged':
    True,
    'runAsUser':
    0
}).command([
    "/bin/bash",
    "-c",
    "sysctl -w vm.max_map_count=262144 -w vm.swappiness=0 -w vm.overcommit_memory=1",
])
deployment.spec().template().spec().containers(
).name('elasticsearch-master').image(image).resources(None).ports([
    {
        'name': 'restful',
        'protocol': 'TCP',
        'containerPort': 9200
    },
    {
        'name': 'transport',
        'protocol': 'TCP',
        'containerPort': 9300
    },
]).volumeMounts([
    #     {
    #     'name': 'config',
    #     'mountPath': '/usr/share/elasticsearch/config/elasticsearch.yml',
    #     'subPath': 'elasticsearch.yml'
    # },
    {
        'name': 'elasticsearch',
        'mountPath': '/usr/share/elasticsearch/data'
    }
]).env(env).securityContext({'privileged': True})
deployment.spec().template().spec().volumes([{
    'name': 'config',
    'configMap': {
        'name': 'elasticsearch'
    }
}, {
    'name': 'elasticsearch',
    'emptyDir': {}
}])
# deployment.debug()
compose.add(deployment)

livenessProbe = {
    'tcpSocket': {
        'port': 9300
    },
    'initialDelaySeconds': 60,
    'failureThreshold': 3,
    'periodSeconds': 10,
    'successThreshold': 1,
    'timeoutSeconds': 5
}
readinessProbe = {
    'tcpSocket': {
        'port': 9300
    },
    'initialDelaySeconds': 5,
    'failureThreshold': 3,
    'periodSeconds': 10,
    'successThreshold': 1,
    'timeoutSeconds': 5
}

statefulSet = StatefulSet()
statefulSet.metadata().name('elasticsearch-data').labels({
    'app': 'elasticsearch',
    'role': 'data'
}).annotations({
    # 'security.kubernetes.io/sysctls': 'vm.swappiness=0',
    'security.kubernetes.io/sysctls': 'vm.max_map_count=262144',
    # 'security.kubernetes.io/sysctls': 'vm.overcommit_memory=1'
})
statefulSet.spec().replicas(3).revisionHistoryLimit(10)
statefulSet.spec().serviceName('elasticsearch-data')
statefulSet.spec().selector(
    {'matchLabels': {
        'app': 'elasticsearch',
        'role': 'data'
    }})
statefulSet.spec().template().metadata().labels({
    'app': 'elasticsearch',
    'role': 'data'
})
statefulSet.spec().template().spec().initContainers(
).name('sysctl').image(image).imagePullPolicy('IfNotPresent').securityContext({
    'privileged':
    True,
    'runAsUser':
    0
}).command([
    "/bin/bash",
    "-c",
    "sysctl -w vm.max_map_count=262144 -w vm.swappiness=0 -w vm.overcommit_memory=1",
])
statefulSet.spec().template().spec().containers(
).name('elasticsearch-data').image(image).ports([
    # {'name': 'restful', 'protocol': 'TCP', 'containerPort': 9200},
    {
        'name': 'transport',
        'protocol': 'TCP',
        'containerPort': 9300
    }
]).volumeMounts([
#     {
#     'name': 'config',
#     'mountPath': '/usr/share/elasticsearch/config/elasticsearch.yml',
#     'subPath': 'elasticsearch.yml'
# }, 
{
    'name': 'elasticsearch',
    'mountPath': '/usr/share/elasticsearch/data'
}]).env(env).securityContext({
    'privileged': True
}).resources(None).livenessProbe(livenessProbe).readinessProbe(readinessProbe)
statefulSet.spec().template().spec().volumes([
    {
        'name': 'config',
        'configMap': {
            'name': 'elasticsearch'
        }
    }
])
# statefulSet.spec().volumeClaimTemplates('a').metadata().name('elasticsearch')
# statefulSet.spec().volumeClaimTemplates('a').spec().resources({'requests':{'storage': '1Gi'}}).accessModes(['ReadWriteOnce']).storageClassName('local-path')
statefulSet.spec().volumeClaimTemplates([{
    'metadata': {
        'name': 'elasticsearch'
    },
    'spec': {
        'accessModes': ["ReadWriteOnce"],
        #   'storageClassName': "longhorn-storage",
        'storageClassName': "local-path",
        'resources': {
            'requests': {
                'storage': '100Gi'
            }
        }
    }
}])
# statefulSet.debug()
compose.add(statefulSet)

ingress = Ingress()
ingress.apiVersion('networking.k8s.io/v1')
ingress.metadata().name('elasticsearch').labels({
    'app': 'elasticsearch',
    'role': 'master'
})
ingress.metadata().namespace(namespace)
# ingress.metadata().annotations({'kubernetes.io/ingress.class': 'nginx'})
ingress.spec().rules([{
    'host': 'es.netkiller.cn',
    'http': {
        'paths': [{
            'pathType': Define.Ingress.pathType.Prefix,
            'path': '/',
            'backend': {
                'service': {
                    'name': 'elasticsearch',
                    'port': {
                        'number': 9200
                    }
                }
            }
        }]
    }
}])
# ingress.debug()
compose.add(ingress)
# compose.debug()

# kubeconfig = '/Volumes/Data/kubernetes/test'
# kubeconfig =  os.path.expanduser('~/workspace/opsk3d-test.yaml')
kubeconfig = os.path.expanduser('~/workspace/ops/ensd/k3s.yaml')

kubernetes = Kubernetes(kubeconfig)
kubernetes.compose(compose)
kubernetes.main()			
			
			

4.2.14.2. Kibana

			
import sys, os

sys.path.insert(0, '/Users/neo/workspace/devops')
from netkiller.kubernetes import *

namespace = 'default'

config = ConfigMap('kibana')
config.apiVersion('v1')
config.metadata().name('kibana').namespace(namespace)
# config.from_file('redis.conf', 'redis.conf')
config.data({
    'kibana.yml':
    pss('''\
server.name: kibana
server.host: "0"
server.basePath: "/kibana"
monitoring.ui.container.elasticsearch.enabled: true
xpack.security.enabled: true
elasticsearch.hosts: [ "http://elasticsearch:9200" ]
elasticsearch.username: elastic
elasticsearch.password: I3KEj0MhUmGxKyd510MhUmGxKydSt
''')
})

limits = {
    'limits': {
        'cpu': '200m',
        'memory': '2Gi'
    },
    'requests': {
        'cpu': '200m',
        'memory': '1Gi'
    }
}

livenessProbe = {
    'tcpSocket': {
        'port': 6379
    },
    'initialDelaySeconds': 30,
    'failureThreshold': 3,
    'periodSeconds': 10,
    'successThreshold': 1,
    'timeoutSeconds': 5
}
readinessProbe = {
    'tcpSocket': {
        'port': 6379
    },
    'initialDelaySeconds': 5,
    'failureThreshold': 3,
    'periodSeconds': 10,
    'successThreshold': 1,
    'timeoutSeconds': 5
}

deployment = Deployment()
deployment.metadata().name('kibana').labels({
    'app': 'kibana'
}).namespace(namespace)
deployment.spec().replicas(1)
deployment.spec().revisionHistoryLimit(10)
# deployment.spec().serviceName('redis')
deployment.spec().selector({'matchLabels': {'app': 'kibana'}})
deployment.spec().strategy().type('RollingUpdate').rollingUpdate('25%','25%')
deployment.spec().template().metadata().labels({'app': 'kibana'})
deployment.spec().template().spec().containers().name('kibana').image(
    'kibana:8.4.1').ports([{
        'name': 'http',
        'containerPort': 5601,
        'protocol': 'TCP'
    }]).env([
        {
            'name': 'TZ',
            'value': 'Asia/Shanghai'
        },
        {
            'name': 'ELASTICSEARCH_HOSTS',
            'value': 'http://elasticsearch.default.svc.cluster.local:9200'
        },
    ])
deployment.spec().template().spec().tolerations([{
    'key': 'node-role.kubernetes.io/master',
    'effect': 'NoSchedule'
}])
# .volumeMounts([
    # {
    #     'name': 'config',
    #     'mountPath': '/usr/share/kibana/config/kibana.yml',
    #     'subPath': 'kibana.yml'
    # },
# ])
# .resources(None).livenessProbe(livenessProbe).readinessProbe(readinessProbe)

# deployment.spec().template().spec().volumes([{
#     'name': 'config',
#     'configMap': {
#         'name': 'kibana'
#     }
# }])

service = Service()
service.metadata().name('kibana')
service.metadata().namespace(namespace)
service.spec().selector({'app': 'kibana'})
service.spec().type('ClusterIP')
service.spec().ports([{
    'name': 'http',
    'protocol': 'TCP',
    'port': 80,
    'targetPort': 5601
}])
# service.debug()

ingress = Ingress()
ingress.apiVersion('networking.k8s.io/v1')
ingress.metadata().name('kibana').labels({
    'app': 'kibana',
})
ingress.metadata().namespace(namespace)
# ingress.metadata().annotations({'kubernetes.io/ingress.class': 'nginx'})
ingress.spec().rules([
    {
        'host': 'kibana.netkiller.cn',
        'http': {
            'paths': [{
                'pathType': Define.Ingress.pathType.Prefix,
                'path': '/',
                'backend': {
                    'service': {
                        'name': 'kibana',
                        'port': {
                            'number': 80
                        }
                    }
                }
            }]
        }
    }
])

compose = Compose('development')
compose.add(config)
compose.add(deployment)
compose.add(service)
compose.add(ingress)
# compose.debug()

# kubeconfig = '/Volumes/Data/kubernetes/test'
kubeconfig = os.path.expanduser('~/workspace/ops/ensd/k3s.yaml')

kubernetes = Kubernetes(kubeconfig)
kubernetes.compose(compose)
kubernetes.main()			
			
			

4.2.14.3. 验证是否工作正常

			
neo@MacBook-Pro-Neo ~> curl -s -X GET "http://es.netkiller.cn/_cat/nodes?v=true&pretty"
ip          heap.percent ram.percent cpu load_1m load_5m load_15m node.role   master name
10.42.2.95            24          19   0    3.79    1.89     0.84 cdfhilmrstw -      elasticsearch-data-2
10.42.1.221           19          20   0    0.03    0.13     0.21 cdfhilmrstw -      elasticsearch-data-0
10.42.0.186           20          41   0    0.01    0.14     0.19 cdfhilmrstw -      elasticsearch-data-1
10.42.2.94            21          19   0    3.79    1.89     0.84 cdfhilmrstw -      elasticsearch-master-0
10.42.1.220           34          20   0    0.03    0.13     0.21 cdfhilmrstw *      elasticsearch-master-1			
			
			
			
neo@MacBook-Pro-Neo ~> curl -s -X GET "http://es.netkiller.cn/_cat/health?v&pretty"
epoch      timestamp cluster            status node.total node.data shards pri relo init unassign pending_tasks max_task_wait_time active_shards_percent
1662963543 06:19:03  kubernetes-cluster green           5         5      8   4    0    0        0             0                  -                100.0%