Category: Docker

docker run -e FTP_USER_NAME=jpuyy -e FTP_USER_PASS=123456 -e FTP_USER_HOME=/home/jpuyy -d --name ftpd_server -p 21:21 -p 30000-30009:30000-30009 -e "PUBLICHOST=0.0.0.0" stilliard/pure-ftpd

Usage:	docker service COMMAND

Manage services

Commands:
  create      Create a new service
  inspect     Display detailed information on one or more services
  logs        Fetch the logs of a service or task
  ls          List services
  ps          List the tasks of one or more services
  rm          Remove one or more services
  rollback    Revert changes to a service's configuration
  scale       Scale one or multiple replicated services
  update      Update a service

Run 'docker service COMMAND --help' for more information on a command.

docker service ls

docker service logs infra_service1

sudo pip install -U docker-compose

编写

version: '3.2'
services:
  db:
    image: mysql:5.7.21
    container_name: mysql
    hostname: mysql-test-1
    restart: always
    ports:
      - 3306:3306
    environment:
      - MYSQL_ALLOW_EMPTY_PASSWORD=YES
    volumes:
      - ./tmp:/var/lib/mysql

  broker:
    image: redis:3.0-alpine
    command: redis-server 
    container_name: broker
    hostname: broker-test-1
    restart: always
    ports:
      - 6379:6379
    volumes:
      - ./tmp:/var/lib/redis

拉起 docker

docker-compose up -d

Docker　创建出来的每一个容器，都会创建一个虚拟的以太网设备(Veth 设备对），其中一端关联到网桥上，另一端使用 Linux 的网络命名空间技术，映射到容器内的 eth0　设备。

以 CentOS　为例，安装工具

yum install -y bridge-utils

查看桥接

brctl show

如果 docker tag 不一样

kubectl set image deployment/myapp myapp=10.10.10.222:5000/myapp:v1.0.1 -n web

如果 docker tag 一样，image digest 不一样，则更新 image 使用 digest

查看 digest

docker images --digests

更新 image

kubectl set image deployment/myapp myapp=10.10.10.222:5000/myapp@sha256:f9d3c70ca6eb35bf33077f308dc526472d21d80b0234121bc93ada58bce99ee9 -n web

要迁移 docker image 有三个方法

1.拿到 docker repo, Dockerfile 重新 build

docker build .

2.通过 docker registry

 docker pull image

3.打包后通过文件迁移

保存一个 tar 文件

docker save -o fedora-latest.tar fedora:latest 

把文件传输到目标机器

docker load -i path to image tar file