centos安装docker

Posted 2020-10-31 zhaoyandev

1.     更新yum

yum update

2.     安装docker

安装

yum install -y docker

 

修改镜像地址，编辑/etc/docker/daemon.json

{

  "registry-mirrors": ["https://uulfe4bd.mirror.aliyuncs.com"]

}

 

 

systemctl start docker

 

排查错误

 

1.启动报错

The service command supports only basic LSB actions (start, stop, restart, try-restart, reload, force-reload, status). For other actions, please try to use systemctl.

 

 

2.查看错误日志

# systemctl status docker.service

● docker.service - Docker Application Container Engine

   Loaded: loaded (/usr/lib/systemd/system/docker.service; disabled; vendor preset: disabled)

   Active: failed (Result: exit-code) since 六 2018-04-21 01:34:30 PDT; 1min 1s ago

     Docs: http://docs.docker.com

  Process: 109164 ExecStart=/usr/bin/dockerd-current --add-runtime docker-runc=/usr/libexec/docker/docker-runc-current --default-runtime=docker-runc --exec-opt native.cgroupdriver=systemd --userland-proxy-path=/usr/libexec/docker/docker-proxy-current --seccomp-profile=/etc/docker/seccomp.json $OPTIONS $DOCKER_STORAGE_OPTIONS $DOCKER_NETWORK_OPTIONS $ADD_REGISTRY $BLOCK_REGISTRY $INSECURE_REGISTRY $REGISTRIES (code=exited, status=1/FAILURE)

 Main PID: 109164 (code=exited, status=1/FAILURE)

   CGroup: /system.slice/docker.service

 

4月 21 01:34:28 localhost.localdomain systemd[1]: Starting Docker Application Container Engine...

4月 21 01:34:28 localhost.localdomain dockerd-current[109164]: time="2018-04-21T01:34:28.627482523-07:00" level=info msg="libcontainerd: new...09176"

4月 21 01:34:29 localhost.localdomain dockerd-current[109164]: time="2018-04-21T01:34:29.647444993-07:00" level=warning msg="overlay2: the backing...

4月 21 01:34:30 localhost.localdomain dockerd-current[109164]: Error starting daemon: SELinux is not supported with the overlay2 graph drive...false)

4月 21 01:34:30 localhost.localdomain systemd[1]: docker.service: main process exited, code=exited, status=1/FAILURE

4月 21 01:34:30 localhost.localdomain systemd[1]: Failed to start Docker Application Container Engine.

4月 21 01:34:30 localhost.localdomain systemd[1]: Unit docker.service entered failed state.

4月 21 01:34:30 localhost.localdomain systemd[1]: docker.service failed.

Hint: Some lines were ellipsized, use -l to show in full.

 

3.解决方案

# vi /etc/sysconfig/docker

 

修改option为:

OPTIONS=‘--selinux-enabled=false --log-driver=journald --signature-verification=false‘

 

原因:

此linux的内核中的SELinux不支持 overlay2 graph driver ，解决方法有两个，要么启动一个新内核，要么就在docker里禁用selinux，--selinux-enabled=false

 

 

3.     安装镜像

安装centos 镜像

docker pull registry.cn-hangzhou.aliyuncs.com/moensun/centos7

 

创建容器

 docker run -dit 3db94df3e006 /usr/sbin/init

 

启动容器

docker start 4843791bbb20

 

进入容器

docker exec -it  4843791bbb20 /bin/bash

 

 

4.     容器安装mysql

1 下载安装包

wget http://repo.mysql.com/mysql57-community-release-el7-10.noarch.rpm

 

2 从主机复制到 容器中

docker cp mysql57-community-release-el7-10.noarch.rpm  mysql_master_01:/root

 

3. 安装其他引用包

yum install -y perl perl-Module-Build net-tools autoconf libaio numactl-libs

 

1. 安装包

rpm -ivh mysql57-community-release-el7-10.noarch.rpm

1. 安装mysql

yum install mysql-server