docker总结

1.安装docker

//获取最新版本的 Docker 安装包，默认自己安装和启动

wget -qO- https://get.docker.com/ | sh

2.镜像加速（可选），不做下载镜像速度慢

curl -sSL https://get.daocloud.io/daotools/set_mirror.sh | sh -s http://4e70ba5d.m.daocloud.io

3.重启docker

service docker restart或者systemctl restart docker

4.docker基本的相关指令，

以tomcat为例,tomcat也可以替换成容器id的前4位数字做为唯一标识

//docker hub上搜索镜像

docker search tomcat

//拉镜像

docker pull tomcat

//启动容器

docker run --name tomcat-test2 -p 7070:8080 -v /home/emg-dev-02/webapps/emap-test:/usr/local/tomcat/webapps/ -d tomcat

//交互模式进入容器

docker exec -it tomcat /bin/bash

//看容器日志

docker logs tomcat

//启动容器

docker start tomcat

//关闭容器

docker stop tomcat

//删除容器

docker rm tomcat

//删除镜像

docker rmi tomcat

//查看所有的容器

docker ps -a

//查看正在运行的容器

docker ps

5.Dockerfile文件的编写

需要了解几个关键词（FROM,ADD,CMD）即可，需要用到别的，自己百度即可

例如：启动springboot的jar包，同时内部调用so文件，如下：

FROM openjdk:8

ADD emap-wgtochina-0.0.1-SNAPSHOT.jar emap-wgtochina.jar

ADD libwgtochina.so libwgtochina.so

CMD java -jar emap-wgtochina.jar

例如：加载war包，启动tomcat，如下：

FROM tomcat

ADD emap-redirect.war /usr/local/tomcat/webapps/

CMD ["catalina.sh", "run"]

6.docker-compose的使用，我的理解docker-compose就是启动容器的脚本，也就是偷懒工具

6.1.安装docker-compose工具

apt update

apt install docker-compose或者pip install docker-compose

6.2 查看docker-compose版本

docker-compose --version

6.3 docker-compose.yml文件格式

具体关键词的意思请看：

https://blog.csdn.net/qq_36148847/article/details/79427878

我这列几个例子

redis的：

 version: '3'

services:

 redis:

  container_name: redis

  image: "registry.emg.local/tools/redis:5.0.3"

  ports:

  - "6378:6379"

  volumes:

  - /home/emg/docker-compose/redis/redis.conf:/etc/redis/redis.conf

  command: redis-server /etc/redis/redis.conf

mongo的：

version: '3'

services:

mongo:

  container_name: mongo

  image: "registry.emg.local/tools/mongo:4.0.6"

  ports:

  - "27018:27017"

  volumes:

  - /home/emg/docker-compose/mongo/data:/data/db

  command: ["mongod", "--bind_ip","0.0.0.0"]

  restart: always

postgres:

version: '3'

services:

postgres:

  container_name: postgres

  image: "registry.emg.local/tools/postgres:9.6.12"

  privileged: true

  ports:

  - "5432:5432"

  environment:

  - POSTGRES_PASSWORD=${pwd}

  - PGDATA=/var/lib/postgresql/data/pgdata

  volumes:

  - /mnt/postgres/data:/var/lib/postgresql/data/pgdata

  restart: always

kafka的

version: '3'

services:

zookeeper:

  container_name: zookeeper

  image: "registry.emg.local/tools/zookeeper:latest"

  ports:

  - "2182:2181"

  restart: always

kafka:

  container_name: kafka

  image: "registry.emg.local/tools/kafka:latest"

  ports:

  - "9093:9092"

  depends_on:

  - zookeeper

  environment:

  KAFKA_ADVERTISED_HOST_NAME: 192.168.41.88

  KAFKA_ZOOKEEPER_CONNECT: 192.168.41.88:2182

  volumes:

  - /var/run/docker.sock:/var/run/docker.sock

springboot的jar包

version: '3'

services:

convert:

  container_name: convert

  image: "registry.emg.local/traffic/emap-wgtochina:v2"

  ports:

  - "9040:9040"

  volumes:

  - /home/emg/docker-compose/wgtochina:/home

  restart: always

  deploy:

  replicas: 2

等等。。

7.docker swarm的部署方式

详细介绍请看：

https://www.cnblogs.com/drawnkid/p/8487337.html

我这里说下几个关键指令

//创建一个Swarm集群 主机ip即可

docker swarm init --advertise-addr 192.168.99.1

//来查看当前swarm集群的状态

docker info

//将节点加入到swarm集群中

docker swarm join --token SWMTKN-1-2bgkinnbc0rmlj6kpotyrlj0uz51l2ikinttsk960dxro558x4-6zajfnahtv9ye39momddh5kru 192.168.99.1:2377

//查看集群节点情况

docker node ls

//如果忘记token，则查找

docker swarm join-token worker

//根据docker-compose.yml文件，启动单节点多个实例

docker stack deploy -c docker-compose.yml stack-demo

//查看docker servie列表

docker service ls

目前总结到这里，以后会有补充。