docker 记录的一些

1、修改docker info的配置

/etc/docker/daemon.json

{

  "registry-mirrors": [

    "https://dockerhub.azk8s.cn",

    "https://docker.mirrors.ustc.edu.cn",

    "http://hub-mirror.c.163.com"

  ],

  "default-address-pools": [

    {"base":"172.70.0.0/16", "size":24},

    {"base":"172.80.0.0/16", "size":24},

    {"base":"172.90.0.0/16", "size":20}

  ],

  "insecure-registries": ["0.0.0.1/0"],

  "storage-driver": "overlay2",

  "userland-proxy": false,

  "max-concurrent-downloads": 10,

  "log-driver": "json-file",

  "log-level": "info",

  "log-opts": {

    "max-size": "10m",

    "max-file": "3"

  },

  "default-ulimits": {

    "nofile": {

        "Name": "nofile",

        "Hard": 655360,

        "Soft": 655360

    }

  },

  "data-root": "/data/docker"

}

 

2、docker日志太多导致磁盘占满

https://colobu.com/2018/10/22/no-space-left-on-device-for-docker/

 

3、普通用户执行docker没有权限

test@/data/casement$ docker info

Client:

 Context:    default

 Debug Mode: false

 

Server:

ERROR: Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Get http://%2Fvar%2Frun%2Fdocker.sock/v1.24/info: dial unix /var/run/docker.sock: connect: permission denied

errors pretty printing info

安装docker后默认有个docker组

需要将普通用户添加到docker组里面

sudo gpasswd -a test docker

newgrp docker

重新执行ok

 

4、docker 常用命令

Docker build -t tag . 

Docker run -d —name=‘xx’ -p 8080:8080 nginx

 

5、清理

docker system prune -a