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1.9. docker 命令

1.9.1. docker - A self-sufficient runtime for containers

1.9.1.1. 查看 docker 信息

		
neo@MacBook-Pro ~ % docker info
Containers: 9
 Running: 8
 Paused: 0
 Stopped: 1
Images: 5
Server Version: 18.09.2
Storage Driver: overlay2
 Backing Filesystem: extfs
 Supports d_type: true
 Native Overlay Diff: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
 Volume: local
 Network: bridge host macvlan null overlay
 Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 9754871865f7fe2f4e74d43e2fc7ccd237edcbce
runc version: 09c8266bf2fcf9519a651b04ae54c967b9ab86ec
init version: fec3683
Security Options:
 seccomp
  Profile: default
Kernel Version: 4.9.125-linuxkit
Operating System: Docker for Mac
OSType: linux
Architecture: x86_64
CPUs: 4
Total Memory: 1.952GiB
Name: linuxkit-025000000001
ID: IT7A:OHXM:XG4E:HX53:ZMA3:GIRA:CYMP:6IJF:QKZ5:MQI4:6LU2:ZD7Z
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): true
 File Descriptors: 70
 Goroutines: 88
 System Time: 2019-03-31T04:23:51.43837431Z
 EventsListeners: 2
HTTP Proxy: gateway.docker.internal:3128
HTTPS Proxy: gateway.docker.internal:3129
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
 127.0.0.0/8
Live Restore Enabled: false
Product License: Community Engine		
		
			

iMac

		
iMac:~ neo$ docker info
Client:
 Debug Mode: false
 Plugins:
  buildx: Build with BuildKit (Docker Inc., v0.3.1-tp-docker)
  scan: Docker Scan (Docker Inc., v0.3.3)
  app: Docker Application (Docker Inc., v0.8.0)

Server:
 Containers: 0
  Running: 0
  Paused: 0
  Stopped: 0
 Images: 0
 Server Version: 19.03.13-beta2
 Storage Driver: overlay2
  Backing Filesystem: extfs
  Supports d_type: true
  Native Overlay Diff: true
 Logging Driver: json-file
 Cgroup Driver: cgroupfs
 Plugins:
  Volume: local
  Network: bridge host ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
 Swarm: inactive
 Runtimes: runc
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: 7ad184331fa3e55e52b890ea95e65ba581ae3429
 runc version: dc9208a3303feef5b3839f4323d9beb36df0a9dd
 init version: fec3683
 Security Options:
  seccomp
   Profile: default
 Kernel Version: 4.19.76-linuxkit
 Operating System: Docker Desktop
 OSType: linux
 Architecture: x86_64
 CPUs: 2
 Total Memory: 3.848GiB
 Name: docker-desktop
 ID: LWQ5:KBRL:SE7U:SJZ4:ANS2:JEQD:5YJO:MVRG:HIEA:XDWD:LQIZ:EJPX
 Docker Root Dir: /var/lib/docker
 Debug Mode: false
 HTTP Proxy: gateway.docker.internal:3128
 HTTPS Proxy: gateway.docker.internal:3129
 Registry: https://index.docker.io/v1/
 Labels:
 Experimental: true
 Insecure Registries:
  127.0.0.0/8
 Registry Mirrors:
  https://registry.docker-cn.com/
 Live Restore Enabled: false
 Product License: Community Engine		
		
			

1.9.1.2. run

run

				$ sudo docker run ubuntu:14.04 /bin/echo 'Hello world'
				Hello world
			

1.9.1.3. start / stop / restart

				sudo docker start silly_bohr
				silly_bohr

				$ sudo docker stop silly_bohr
				silly_bohr

				$ sudo docker restart silly_bohr
				silly_bohr
			

1.9.1.4. ps

			
OPTIONS说明:
-a :显示所有的容器,包括未运行的。
-f :根据条件过滤显示的内容。
--format :指定返回值的模板文件。
-l :显示最近创建的容器。
-n :列出最近创建的n个容器。
--no-trunc :不截断输出。
-q :静默模式,只显示容器编号。
-s :显示总的文件大小。			
			
			
				sudo docker ps
			
				$ sudo docker ps -l
				CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
				84391d1de0fc ubuntu:14.04 /bin/echo Hello worl 31 minutes ago Exit 0 romantic_ritchie
			

1.9.1.5. top

				$ sudo docker ps
				CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
				13b2a4a31455 ubuntu:14.04 /bin/bash 3 hours ago Up 3 hours silly_bohr

				$ sudo docker top silly_bohr
				UID PID PPID C STIME TTY TIME CMD
				root 23225 22908 0 12:17 pts/14 00:00:00 /bin/bash
			

1.9.1.6. inspect

			
$ sudo docker inspect silly_bohr
[{
    "ID": "13b2a4a3145528d087c9d1580fa78aaa52e8a9bb973c9da923bceb9f9b9e7e5a",
    "Created": "2014-07-17T04:17:45.262480632Z",
    "Path": "/bin/bash",
    "Args": [],
    "Config": {
        "Hostname": "13b2a4a31455",
        "Domainname": "",
        "User": "",
        "Memory": 0,
        "MemorySwap": 0,
        "CpuShares": 0,
        "AttachStdin": true,
        "AttachStdout": true,
        "AttachStderr": true,
        "PortSpecs": null,
        "ExposedPorts": null,
        "Tty": true,
        "OpenStdin": true,
        "StdinOnce": true,
        "Env": [
            "HOME=/",
            "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
        ],
        "Cmd": [
            "/bin/bash"
        ],
        "Dns": [
            "8.8.8.8",
            "8.8.4.4"
        ],
        "Image": "ubuntu",
        "Volumes": null,
        "VolumesFrom": "",
        "WorkingDir": "",
        "Entrypoint": null,
        "NetworkDisabled": false,
        "OnBuild": null
    },
    "State": {
        "Running": true,
        "Pid": 23225,
        "ExitCode": 0,
        "StartedAt": "2014-07-17T04:17:45.672269614Z",
        "FinishedAt": "0001-01-01T00:00:00Z",
        "Ghost": false
    },
    "Image": "e54ca5efa2e962582a223ca9810f7f1b62ea9b5c3975d14a5da79d3bf6020f37",
    "NetworkSettings": {
        "IPAddress": "172.17.0.2",
        "IPPrefixLen": 16,
        "Gateway": "172.17.42.1",
        "Bridge": "docker0",
        "PortMapping": null,
        "Ports": {}
    },
    "ResolvConfPath": "/var/lib/docker/containers/13b2a4a3145528d087c9d1580fa78aaa52e8a9bb973c9da923bceb9f9b9e7e5a/resolv.conf",
    "HostnamePath": "/var/lib/docker/containers/13b2a4a3145528d087c9d1580fa78aaa52e8a9bb973c9da923bceb9f9b9e7e5a/hostname",
    "HostsPath": "/var/lib/docker/containers/13b2a4a3145528d087c9d1580fa78aaa52e8a9bb973c9da923bceb9f9b9e7e5a/hosts",
    "Name": "/silly_bohr",
    "Driver": "aufs",
    "ExecDriver": "native-0.1",
    "Volumes": {},
    "VolumesRW": {},
    "HostConfig": {
        "Binds": null,
        "ContainerIDFile": "",
        "LxcConf": [],
        "Privileged": false,
        "PortBindings": {},
        "Links": null,
        "PublishAllPorts": false
    }
}]
			
			
1.9.1.6.1. 获取容器名称
			
neo@MacBook-Pro ~ % docker inspect --format='{{.Name}}' $(docker ps -aq)
/redis-cli
/cluster_redisslave3_1
/cluster_redismaster3_1
/cluster_redismaster2_1
/cluster_redisslave2_1
/cluster_redismaster1_1
/cluster_redisslave1_1
/cluster_redis-image_1
/devel_eureka_1
/devel_config_1
/quizzical_heisenberg

neo@MacBook-Pro ~ % docker inspect --format='{{.Name}}' $(docker ps -aq)|cut -d"/" -f2
redis-cli
cluster_redisslave3_1
cluster_redismaster3_1
cluster_redismaster2_1
cluster_redisslave2_1
cluster_redismaster1_1
cluster_redisslave1_1
cluster_redis-image_1
devel_eureka_1
devel_config_1
quizzical_heisenberg
			
				
1.9.1.6.2. 容器镜像名称
			
neo@MacBook-Pro ~ % docker inspect --format='{{.Config.Image}}' `docker ps -a -q`
netkiller/redis:latest
netkiller/redis
netkiller/redis
netkiller/redis
netkiller/redis
netkiller/redis
netkiller/redis
netkiller/redis:latest
netkiller/eureka:latest
netkiller/config:latest
netkiller/eureka			
			
				
1.9.1.6.3. 获取容器主机名 Hostname
			
neo@MacBook-Pro ~ % docker inspect --format '{{ .Config.Hostname }}' $(docker ps -q)
dbea51159085
79126b58e92a
5d1fff33a3e1
42a58cb957d9
68904b82d071
70a20dd0396d
742313f2af46			
			
				
1.9.1.6.4. 查询 IP 地址
			
$ sudo docker inspect -f '{{ .NetworkSettings.IPAddress }}' silly_bohr
			
				
			
neo@MacBook-Pro ~ % docker inspect --format='{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' $(docker ps -q)

172.24.0.7
172.24.0.6
172.24.0.5
172.24.0.4
172.24.0.3
172.24.0.2			
			
				

获取容器的MAC地址

			
neo@MacBook-Pro ~ % docker inspect --format='{{range .NetworkSettings.Networks}}{{.MacAddress}}{{end}}' $(docker ps -a -q)

02:42:ac:18:00:07
02:42:ac:18:00:06
02:42:ac:18:00:05
02:42:ac:18:00:04
02:42:ac:18:00:03
02:42:ac:18:00:02			
			
				
1.9.1.6.5. 容器日志
			
neo@MacBook-Pro ~ % docker inspect --format='{{.LogPath}}' `docker ps -a -q`
/var/lib/docker/containers/dbea511590859fee80565d1c047da2443d62f72f79627c7a97fd891b3ae41168/dbea511590859fee80565d1c047da2443d62f72f79627c7a97fd891b3ae41168-json.log
/var/lib/docker/containers/79126b58e92adbe933d8e39966af1e19cd867afe509deca2689fd27e5d25dce7/79126b58e92adbe933d8e39966af1e19cd867afe509deca2689fd27e5d25dce7-json.log
/var/lib/docker/containers/5d1fff33a3e14d409e2ef675820d68af0fdd6d512a7db06540b02b612eb889cc/5d1fff33a3e14d409e2ef675820d68af0fdd6d512a7db06540b02b612eb889cc-json.log
/var/lib/docker/containers/42a58cb957d965d5ac0aa5d329c6b68aa7f62cae096f974df99281f50c4819ab/42a58cb957d965d5ac0aa5d329c6b68aa7f62cae096f974df99281f50c4819ab-json.log
/var/lib/docker/containers/68904b82d071b956757a54c50d95122210e84012542ec3cbe354b72601bf62ba/68904b82d071b956757a54c50d95122210e84012542ec3cbe354b72601bf62ba-json.log
/var/lib/docker/containers/70a20dd0396d4b48314bfe119d71fc810fe17fcb174d0bfb116bb8da53bff677/70a20dd0396d4b48314bfe119d71fc810fe17fcb174d0bfb116bb8da53bff677-json.log
/var/lib/docker/containers/742313f2af466b7b932f8562e0dc75a228c7f815b4eb5a35dd1618d94c88bf7e/742313f2af466b7b932f8562e0dc75a228c7f815b4eb5a35dd1618d94c88bf7e-json.log
/var/lib/docker/containers/d60dcf49c5d4c78904c442f8fb09e5d3d57a9a2d21f6abaae7ee2d36bcc3e4a2/d60dcf49c5d4c78904c442f8fb09e5d3d57a9a2d21f6abaae7ee2d36bcc3e4a2-json.log
/var/lib/docker/containers/44c7ea7593838db1cea824862ee9708c77143d0e07d12cae0116cd8231eb2d1c/44c7ea7593838db1cea824862ee9708c77143d0e07d12cae0116cd8231eb2d1c-json.log
/var/lib/docker/containers/ae3c930f6eca854c9dc1c2ae84b7c870d63f3731290d347dc27fcf85c36821e5/ae3c930f6eca854c9dc1c2ae84b7c870d63f3731290d347dc27fcf85c36821e5-json.log
/var/lib/docker/containers/9beae3d5f5132e5f733e044d634b1e8b2650c30151db1a8468109bbf891be674/9beae3d5f5132e5f733e044d634b1e8b2650c30151db1a8468109bbf891be674-json.log			
			
				
1.9.1.6.6. 获取 json 配置
			
neo@MacBook-Pro ~ % docker inspect --format='{{json .Config}}' dbea51159085 | jq
{
  "Hostname": "dbea51159085",
  "Domainname": "",
  "User": "",
  "AttachStdin": false,
  "AttachStdout": false,
  "AttachStderr": false,
  "ExposedPorts": {
    "6379/tcp": {}
  },
  "Tty": false,
  "OpenStdin": false,
  "StdinOnce": false,
  "Env": [
    "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
    "GOSU_VERSION=1.10",
    "REDIS_VERSION=5.0.4",
    "REDIS_DOWNLOAD_URL=http://download.redis.io/releases/redis-5.0.4.tar.gz",
    "REDIS_DOWNLOAD_SHA=3ce9ceff5a23f60913e1573f6dfcd4aa53b42d4a2789e28fa53ec2bd28c987dd",
    "REDIS_PORT=6379"
  ],
  "Cmd": [
    "redis-cli"
  ],
  "Image": "netkiller/redis:latest",
  "Volumes": {
    "/data": {}
  },
  "WorkingDir": "/data",
  "Entrypoint": [
    "/docker-entrypoint.sh"
  ],
  "OnBuild": null,
  "Labels": {
    "com.docker.compose.config-hash": "f2e8434ec82c796bceac48461d71d487ff3fb53f711220a1efb976c59bd4d68c",
    "com.docker.compose.container-number": "1",
    "com.docker.compose.oneoff": "False",
    "com.docker.compose.project": "cluster",
    "com.docker.compose.service": "redis-cli",
    "com.docker.compose.version": "1.23.2"
  }
}
			
			
				
1.9.1.6.7. 函数

拆分和组合

			
neo@MacBook-Pro ~ % docker inspect --format '{{join .Config.Entrypoint " , "}}' dbea51159085
/docker-entrypoint.sh	

neo@MacBook-Pro ~ % docker inspect --format '{{.HostsPath}}' dbea51159085 
/var/lib/docker/containers/dbea511590859fee80565d1c047da2443d62f72f79627c7a97fd891b3ae41168/hosts
neo@MacBook-Pro ~ % docker inspect --format '{{split .HostsPath "/"}}' dbea51159085
[ var lib docker containers dbea511590859fee80565d1c047da2443d62f72f79627c7a97fd891b3ae41168 hosts]		
			
				

大小写转换

			
neo@MacBook-Pro ~ % docker inspect --format "{{lower .Name}}"  dbea51159085                 
/redis-cli
neo@MacBook-Pro ~ % docker inspect --format "{{upper .Name}}" dbea51159085
/REDIS-CLI			
			
				

首字母大写

			
neo@MacBook-Pro ~ % docker inspect --format "{{title .State.Status}}" dbea51159085
Restarting			
			
				

长度计算

			
neo@MacBook-Pro ~ % docker inspect --format '{{len .Name}}' dbea51159085
10			
			
				

打印字符串

			
neo@MacBook-Pro ~ % INSTANCE_ID=42a58cb957d9                                                

neo@MacBook-Pro ~ % docker inspect --format '{{.State.Pid}}{{.State.ExitCode}}' $INSTANCE_ID   
745770

neo@MacBook-Pro ~ % docker inspect --format '{{print .State.Pid .State.ExitCode}}' $INSTANCE_ID
74577 0

neo@MacBook-Pro ~ % docker inspect --format '{{printf "Pid:%d ExitCode:%d" .State.Pid .State.ExitCode}}' $INSTANCE_ID
Pid:74577 ExitCode:0

neo@MacBook-Pro ~ % docker inspect --format '{{.State.Pid}}{{print "|"}}{{.State.ExitCode}}' $INSTANCE_ID 
74577|0
			
			
				
1.9.1.6.8. 综合查询
			
neo@MacBook-Pro ~ % docker inspect --format 'Hostname:{{ .Config.Hostname }}  Name:{{.Name}} IP:{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' $(docker ps -q)
Hostname:dbea51159085  Name:/redis-cli IP:
Hostname:79126b58e92a  Name:/cluster_redisslave3_1 IP:172.24.0.7
Hostname:5d1fff33a3e1  Name:/cluster_redismaster3_1 IP:172.24.0.6
Hostname:42a58cb957d9  Name:/cluster_redismaster2_1 IP:172.24.0.5
Hostname:68904b82d071  Name:/cluster_redisslave2_1 IP:172.24.0.4
Hostname:70a20dd0396d  Name:/cluster_redismaster1_1 IP:172.24.0.3
Hostname:742313f2af46  Name:/cluster_redisslave1_1 IP:172.24.0.2			
			
				

1.9.1.7. images

		
$ sudo docker images
REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
ubuntu 14.10 58faa899733f 2 weeks ago 196 MB
ubuntu utopic 58faa899733f 2 weeks ago 196 MB
ubuntu precise ea7d6801c538 3 weeks ago 127.5 MB
ubuntu 12.04 ea7d6801c538 3 weeks ago 127.5 MB
ubuntu 12.10 c5881f11ded9 4 weeks ago 172.2 MB
ubuntu quantal c5881f11ded9 4 weeks ago 172.2 MB
ubuntu 13.04 463ff6be4238 4 weeks ago 169.4 MB
ubuntu raring 463ff6be4238 4 weeks ago 169.4 MB
ubuntu 13.10 195eb90b5349 4 weeks ago 184.7 MB
ubuntu saucy
195eb90b5349 4 weeks ago 184.7 MB
ubuntu 14.04 e54ca5efa2e9 4 weeks ago 276.5 MB
ubuntu latest e54ca5efa2e9 4 weeks ago 276.5 MB
ubuntu trusty e54ca5efa2e9 4 weeks ago 276.5 MB
ubuntu 10.04 3db9c44f4520 12 weeks ago 183 MB
ubuntu lucid 3db9c44f4520 12 weeks ago 183 MB
		
			
1.9.1.7.1. Getting a new image
			
$ sudo docker pull centos
Pulling repository centos
b7de3133ff98: Pulling dependent layers
5cc9e91966f7: Pulling fs layer
511136ea3c5a: Download complete
ef52fb1fe610: Download complete
			
				

1.9.1.8. logs

显示容器运行日志,用于排查异常情况

例如下面是nginx容易启动出错日志

		
[root@netkiller]# docker logs my-nginx-container
nginx: [emerg] invalid server name or wildcard "www.*.com" on 0.0.0.0:80
nginx: [emerg] invalid server name or wildcard "www.*.com" on 0.0.0.0:80
nginx: [emerg] invalid server name or wildcard "www.*.com" on 0.0.0.0:80
nginx: [emerg] invalid server name or wildcard "www.*.com" on 0.0.0.0:80
nginx: [emerg] invalid server name or wildcard "www.*.com" on 0.0.0.0:80
nginx: [emerg] invalid server name or wildcard "www.*.com" on 0.0.0.0:80
		
			

1.9.1.9. 重置 Docker

		
docker ps -aq | xargs docker rm -f
docker images -aq | xargs docker rmi -f	
		
			

1.9.1.10. 仓库操作

https://docs.docker.com/engine/reference/commandline/login/

登陆到一个Docker镜像仓库,如果未指定镜像仓库地址,默认为官方仓库 Docker Hub

1.9.1.10.1. 登陆
			
docker login -u 用户名 -p 密码			
			
				

登陆到私有仓库

			
$ docker login localhost:8080			
			
				

从标准输出传递密码

			
$ cat ~/my_password.txt | docker login --username foo --password-stdin			
			
				
1.9.1.10.2. 注销
			
docker logout			
			
				

1.9.1.11. build

		
$ docker build -f /path/to/a/Dockerfile .
		
			

1.9.1.12. 网络管理

		
docker network create -d bridge --subnet 172.25.0.0/16 private_network

docker run -d -v /usr/local/etc/redis/redis.conf:/usr/local/etc/redis/redis.conf -p 6379:6379 --network=private_network --name redis redis redis-server /usr/local/etc/redis/redis.conf

		
			

1.9.2. docker-compose - Define and run multi-container applications with Docker.

Docker Compose v3

1.9.2.1. 安装 docker-compose

1.9.2.1.1. 使用 pip 安装
			
yum install -y python-pip
pip install docker-compose
			
			
1.9.2.1.2. OSCM 安装
			
curl -s https://raw.githubusercontent.com/oscm/shell/master/virtualization/docker/docker-compose.sh | bash
			
			

1.9.2.2. 快速入门

		
[root@localhost tmp]# cat app.py 
import time

import redis
from flask import Flask


app = Flask(__name__)
cache = redis.Redis(host='redis', port=6379)


def get_hit_count():
    retries = 5
    while True:
        try:
            return cache.incr('hits')
        except redis.exceptions.ConnectionError as exc:
            if retries == 0:
                raise exc
            retries -= 1
            time.sleep(0.5)


@app.route('/')
def hello():
    count = get_hit_count()
    return 'Hello World! I have been seen {} times.\n'.format(count)

if __name__ == "__main__":
    app.run(host="0.0.0.0", debug=True)
		
		
		
		
[root@localhost tmp]# cat requirements.txt 
flask
redis		
		
		
		
[root@localhost tmp]# cat Dockerfile 
FROM python:3.4-alpine
ADD . /code
WORKDIR /code
RUN pip install -r requirements.txt
CMD ["python", "app.py"]
		
		
		
[root@localhost tmp]# cat docker-compose.yml 
version: '2'
services:
  web:
    build: .
    ports:
     - "5000:5000"
  redis:
    image: "redis:alpine"
		
		

		

		
		

1.9.2.3. 启动/停止

1.9.2.3.1. 启动

docker-compose up

			
[root@localhost docker]# docker-compose up
			
			

守护进程

			
docker-compose up -d			
			
			
1.9.2.3.2. 停止

docker-compose down

			
[root@localhost docker]# docker-compose down
Removing docker_membersrvc_1 ... done		
			
			

1.9.2.4. 查看进程

docker-compose ps

		
[root@localhost docker]# docker-compose ps 
      Name                     Command               State                                   Ports                                  
-----------------------------------------------------------------------------------------------------------------------------------
test_membersrvc_1   membersrvc                       Up      0.0.0.0:7054->7054/tcp                                                 
test_vp0_1          sh -c sleep 5; peer node s ...   Up      0.0.0.0:7050->7050/tcp, 0.0.0.0:7051->7051/tcp, 0.0.0.0:7053->7053/tcp			
		
		

1.9.2.5. 查看日志

		
docker-compose logs -f vp0		
		
		

1.9.2.6. 执行命令

		
docker-compose exec vp0 bash		
		
		

1.9.2.7. docker-compose.yml

本章节介绍如何定义 docker-compose.yml 文件

首先创建项目目录

		
mkdir docker
cd docker
vim 	docker-compose.yml
		
		
1.9.2.7.1. 版本号
			
version: '3'	
			
			
1.9.2.7.2. 镜像

image: mysql:5.7 表示使用 mysql:5.7 镜像, image: mysql:latest 表示 mysql 最新版

			
services:
   db:
     image: mysql:5.7
     volumes:
       - db_data:/var/lib/mysql
     restart: always
     environment:
       MYSQL_ROOT_PASSWORD: somewordpress
       MYSQL_DATABASE: wordpress
       MYSQL_USER: wordpress
       MYSQL_PASSWORD: wordpress			
			
			
1.9.2.7.2.1. 挂在卷
				
     volumes:
       - db_data:/var/lib/mysql
				
				
1.9.2.7.3. 映射端口的标签

将容器中的端口暴漏给宿主主机。

			
ports:
 - "3000"
 - "80:80"
 - "22:22"
 - "127.0.0.1:8000:8000"
			
			

默认 "端口:端口" 将监听 127.0.0.1 主机。如果需要将端口暴漏出去,格式是"IP:PORT:PORT",IP地址是宿主主机的网络适配器IP地址。

1.9.2.7.4. 添加 hosts 文件

往/etc/hosts文件中添加主机名,与Docker client的--add-host类似:

			
	extra_hosts:
		- "orderer.example.com:10.130.116.8"
		- "peer0.org1.example.com:10.130.116.9"
		- "peer1.org1.example.com:10.130.116.10"
		- "peer0.org2.example.com:10.130.116.25"
		- "peer1.org2.example.com:10.130.116.27"
			
			
1.9.2.7.5. 设置环境变量

environment 实现容器中环境变量的定义

			
version: '3'

networks:
  basic:

services:
  tools:
    container_name: tools 
    image: hyperledger/fabric-tools
    tty: true
    environment:
      - GOPATH=/opt/gopath
      - CORE_VM_ENDPOINT=unix:///host/var/run/docker.sock
      - CORE_LOGGING_LEVEL=DEBUG
      - CORE_PEER_ID=cli
      - CORE_PEER_ADDRESS=peer0.org1.example.com:7051
      - CORE_PEER_LOCALMSPID=Org1MSP
      - CORE_PEER_MSPCONFIGPATH=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org1.example.com/users/Admin@org1.example.com/msp
      - CORE_CHAINCODE_KEEPALIVE=10
    # working_dir: /opt/gopath/src/github.com/hyperledger/fabric/peer
    working_dir: /root/netkiller
    command: /bin/bash
    volumes:
        - /var/run/:/host/var/run/
        - ~/netkiller:/root/netkiller
        - ./chaincode/:/opt/gopath/src/github.com/
        - ./crypto:/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/
    networks:
        - basic
			
			
1.9.2.7.6. 临时文件系统

挂载临时目录到容器:

			
tmpfs: /run
tmpfs:
  - /run
  - /tmp			
			
			
1.9.2.7.7. 编译 Dockerfile

编译当前目录下的 Dockerfile 使用 build: .

			
version: '3'
services:
  web:
    build: .
    ports:
     - "5000:5000"			
			
			

指定镜像名称

			
version: "3.7"
services:
  redis-image:
    build:
      context: .
      dockerfile: Dockerfile
      args:
        - node=master
    image: netkiller/redis:latest
    container_name: redis
    restart: always
    ports:
      - "6379:6379"
    networks:
      - redis
    privileged: true
    sysctls:
      net.core.somaxconn: '511'
    ulimits:
      nproc: 65535
      nofile:
        soft: 65535
        hard: 65535			
			
			

docker-compose build redis-image 构建镜像

			
neo@MacBook-Pro ~/workspace/docker/docker-compose/redis/cluster % docker-compose build redis-image
Building redis-image
Step 1/12 : FROM redis:latest
 ---> a55fbf438dfd
Step 2/12 : ARG node
 ---> Using cache
 ---> 4deb8fc1e1df
Step 3/12 : ENV REDIS_PORT 6379
 ---> Using cache
 ---> 5723ff2fe55c
Step 4/12 : COPY redis.conf /etc/redis/redis.conf
 ---> Using cache
 ---> daf496f8c342
Step 5/12 : COPY docker-entrypoint.sh /usr/local/bin/
 ---> Using cache
 ---> 600ae3b0c059
Step 6/12 : RUN ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
 ---> Using cache
 ---> 630e3813bc8f
Step 7/12 : RUN echo 'Asia/Shanghai' >/etc/timezone
 ---> Using cache
 ---> 7d48350d6621
Step 8/12 : RUN echo 'echo never > /sys/kernel/mm/transparent_hugepage/enabled' > /etc/rc.local
 ---> Using cache
 ---> c096dc75da72
Step 9/12 : RUN chmod +rw /etc/redis/redis.conf
 ---> Using cache
 ---> 25d8b0ac8893
Step 10/12 : EXPOSE $REDIS_PORT
 ---> Using cache
 ---> 99f31a88d2ff
Step 11/12 : ENTRYPOINT ["/usr/local/bin/docker-entrypoint.sh"]
 ---> Using cache
 ---> ef98f89610ae
Step 12/12 : CMD [ "redis-server", "/etc/redis/redis.conf" ]
 ---> Using cache
 ---> 095823650068

Successfully built 095823650068
Successfully tagged netkiller/redis:latest

neo@MacBook-Pro ~/workspace/docker/docker-compose/redis/cluster % docker images | grep netkiller/redis
netkiller/redis                            latest              095823650068        8 minutes ago       95MB
			
			
1.9.2.7.8. resources 硬件资源分配
			
resources:
  limits:
    cpus: '0.001'
    memory: 50M
  reservations:
    cpus: '0.0001'
    memory: 20M