一.安装成功验证
此次在centos7下升级docker版本主要是为解决以下问题:Docker 安装MySQL8镜像出现:The designated data directory /var/lib/mysql/ is unusable.排查很久发现是docker版本的原因。
旧版本:
新版本:
二.删除旧版本
bash
#停止服务
sudo systemctl stop docker docker.socket containerd
#卸载 Docker 软件包:卷,镜像等可不卸载,卸载了就没有了,还要重新下载
sudo rm -rf /usr/local/bin/docker*
sudo rm -rf /usr/local/bin/containerd*
sudo rm -rf /usr/local/bin/runc
#验证
which docker
# 检查残留文件 卷,镜像,配置文件不卸载,会有输出
ls /var/lib | grep docker # 应无输出
ls /etc | grep docker # 应无输出
ls /usr/local/bin | grep docker # 应无输出
三.强制安装最新版
2.1 下载最新静态二进制包
bash
# 创建目录
mkdir -p ~/docker-latest && cd ~/docker-latest
# 下载 Docker 24.x 静态包(示例)
wget https://download.docker.com/linux/static/stable/x86_64/docker-24.0.7.tgz
# 解压到系统路径
sudo tar xzvf docker-*.tgz --strip-components=1 -C /usr/local/bin
2.2 安装依赖
bash
# 下载最新 containerd 和 runc
wget https://github.com/containerd/containerd/releases/download/v1.7.12/containerd-1.7.12-linux-amd64.tar.gz
wget https://github.com/opencontainers/runc/releases/download/v1.1.12/runc.amd64
# 安装
sudo tar xzvf containerd-*.tar.gz -C /usr/local/bin
sudo install -m 755 runc.amd64 /usr/local/sbin/runc
2.3 配置 systemd 服务
bash
# 注意:需根据新版 Docker 调整配置参数
sudo vim /etc/systemd/system/docker.service
bash
[Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
After=network-online.target firewalld.service containerd.service
Wants=network-online.target
Requires=docker.socket containerd.service
[Service]
Type=notify
ExecStart=/usr/local/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock
ExecReload=/bin/kill -s HUP $MAINPID
TimeoutSec=0
RestartSec=2
Restart=always
StartLimitBurst=3
StartLimitInterval=60s
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity
TasksMax=infinity
Delegate=yes
KillMode=process
[Install]
WantedBy=multi-user.target
2.4 创建 containerd 服务文件
bash
sudo vi /etc/systemd/system/containerd.service
bash
[Unit]
Description=containerd container runtime
Documentation=https://containerd.io
After=network.target
[Service]
ExecStartPre=-/sbin/modprobe overlay
ExecStart=/usr/local/bin/containerd
Restart=always
RestartSec=5
Delegate=yes
KillMode=process
OOMScoreAdjust=-999
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity
[Install]
WantedBy=multi-user.target
2.5 检查 Docker 依赖的 socket 文件
bash
# 创建 docker.socket 文件(若缺失)
sudo vi /etc/systemd/system/docker.socket
#重载并启动
sudo systemctl daemon-reload
sudo systemctl enable docker.socket
sudo systemctl start docker.socket
bash
[Unit]
Description=Docker Socket for the API
[Socket]
ListenStream=/var/run/docker.sock
SocketMode=0660
SocketUser=root
SocketGroup=docker
[Install]
WantedBy=sockets.target
2.6 环境变量配置
bash
# 永久生效(写入 ~/.bashrc 或 /etc/profile)
echo 'export PATH=$PATH:/usr/local/bin' >> ~/.bashrc
source ~/.bashrc
2.7 启动并测试
bash
# 重载 systemd
sudo systemctl daemon-reload
# 启动 containerd
sudo systemctl start containerd
sudo systemctl enable containerd
# 启动 Docker
sudo systemctl start docker
sudo systemctl enable docker
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