(6)二进制文件方式部署Kubernetes高可用集群----------安装Docker Engine

5 二进制文件安装Docker Engine

Doecker：统一的资源操作入口。这里，我们没有使用粗暴式的yum install docker安装而是使用二进制文件方式安装docker组件，虽然过程较复杂，但是有利于做定制化需求开发和故障排查。

 

5.1 下载tar包

下载tar包：

# wget https://download.docker.com/linux/static/stable/x86_64/docker-18.03.1-ce.tgz

tar解压，docker的二进制文件如下:

#tar xzvf docker-18.03.1-ce.tgz

二进制方式安装docker，需要将上述二进制文件放入/usr/bin目录下，这个时候我们需要配置一个服务启动文件才能够启动docker engine。

5.2 创建Docker服务启动文件

路径：/usr/lib/systemd/system

创建docker.service服务启动文件

[Unit] Description=Docker Application Container Engine Documentation=https://docs.docker.com After=network.target firewalld.service   [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   [Install] WantedBy=multi-user.target

5.2 启动Docker

#systemctl daemon-reload #systemctl enable docker #systemctl start docker #systemctl status docker