docker 小记

一、卸载

查看当前版本

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docker -v

如果有，先停止docker

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systemctl stop docker

如果是yum安装，卸载方式为

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#已防版本冲突，直接卸载
yum remove docker \
                  docker-client \
                  docker-client-latest \
                  docker-common \
                  docker-latest \
                  docker-latest-logrotate \
                  docker-logrotate \
                  docker-engine

如果为二进制离线安装，则卸载方式为

删除docker配置文件目录

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rm -rf /etc/docker

删除docker service文件目录

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rm -rf /etc/systemd/system/docker.service

或

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rm -rf /usr/lib/systemd/system/docker.service

删除docker部署目录

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# 如果配置文件中指定了docker-root配置项，则删除该配置项对应的目录
rm -rf /home/docker_data
# 如果配置项中未指定docker-root配置项，则docker会被部署到/var/lib/docker目录下
rm -rf /var/lib/docker

卸载docker存储库

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rm -rf /etc/yum.repos.d/docker-ce.repo

重启服务

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reboot

二、安装

二进制安装

阿里云下载安装包：https://mirrors.aliyun.com/docker-ce/linux/static/stable/x86_64/
解压，移动

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tar -zvxf docker-26.0.0.tgz
cp docker/* /usr/bin/

注册服务，新建 docker.service 文件

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[Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
After=network-online.target firewalld.service
Wants=network-online.target
[Service]
Type=notify
# the default is not to use systemd for cgroups because the delegate issues still
# exists and systemd currently does not support the cgroup feature set required
# for containers run by docker
ExecStart=/usr/bin/dockerd
ExecReload=/bin/kill -s HUP $MAINPID
# Having non-zero Limit*s causes performance problems due to accounting overhead
# in the kernel. We recommend using cgroups to do container-local accounting.
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity
# Uncomment TasksMax if your systemd version supports it.
# Only systemd 226 and above support this version.
#TasksMax=infinity
TimeoutStartSec=0
# set delegate yes so that systemd does not reset the cgroups of docker containers
Delegate=yes
# kill only the docker process, not all processes in the cgroup
KillMode=process
# restart the docker process if it exits prematurely
Restart=on-failure
StartLimitBurst=3
StartLimitInterval=60s
[Install]
WantedBy=multi-user.target

将 docker.service 拷贝到

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cp docker.service /usr/lib/systemd/system/

重新加载配置文件

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systemctl daemon-reload

启动docker

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systemctl start docker

查看docker状态

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systemctl status docker

设置开机自启

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systemctl enable docker

注意：如果启动docker提示"Failed to execute operation: Bad message"，可能复制docker.service文件时， $Unit$ 变成了 t]，又或者ExecStart 写成Execstart。

配置镜像参考：https://blog.csdn.net/u014390502/article/details/143472743

比如：https://docker.tbedu.top/

一、卸载

二、安装

一. docker命令

二. docker 存储

三. docker 网络

四. docker compose

五. dockerfile