docker离线升级

一、删除老版本

停止docker服务

systemctl stop docker

查看当前版本

rpm -qa | grep docker

卸载软件包

yum erase docker \
docker-client \
docker-client-latest \
docker-common \
docker-latest \
docker-latest-logrotate \
docker-logrotate \
docker-selinux \
docker-engine-selinux \
docker-engine \
docker-ce

删除相关配置文件

find /etc/systemd -name '*docker*' -exec rm -f {} \;
 
find /etc/systemd -name '*docker*' -exec rm -f {} \;
 
find /lib/systemd -name '*docker*' -exec rm -f {} \;
 
rm -rf /var/lib/docker #删除以前已有的镜像和容器,非必要
 
rm -rf /var/run/docker 

二、下载和配置

• docker版本：docker-17.12.0-ce.tgz

• 下载地址：Index of linux/static/stable/，进入x86_64目录，选择对应的版本下载。

    1.上传到服务器目录下，解压文件。

tar -xvf docker-17.12.0-ce.tgz

    2.将解压出来的docker文件内容移动到 /usr/bin/ 目录下，该命令使用sudo进行，否则可能会出现权限不足的问题。

sudo cp docker/* /usr/bin/

    3.将docker注册为service服务，建议在外部写好该文件再上传到指定目录下，比较方便，或者使用vim命令新建该文件。

vim /etc/systemd/system/docker.service

    4.docker.service文件编码内容如下。

[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

    5.添加文件权限并启动docker 。

chmod +x /etc/systemd/system/docker.service
 
systemctl daemon-reload
systemctl start docker #启动Docker
systemctl enable docker.service #设置开机自启

    6.查询相关信息。

systemctl status docker #查看Docker状态
 
docker -v #查看Docker版本