centos安装最新版的docker-ce（二进制安装）

在centos上安装过docker的都知道，yum install docker ，这种方式安装的docker，最新版的centos系统上，版本应该是1.13.1，而目前最新版的docker到了18.03.0了。那么怎么安装最新版的docker-ce呢？

1、系统要求

Linux操作系统内核要不低于3.10，并且要支持systemd。

2、下载最新版的docker

Docker官网下载地址：https://download.docker.com/linux/static/stable/x86_64/

上面列出了docker-ce版本，根据自己需要下载对应版本的docker-ce.
Docker官网下载地址：https://download.docker.com/linux/static/stable/x86_64/

image.png

我下载的是18.03.0版本。

3、安装部署方式说明

整个安装部署过程大致可分为将介质解压出docker目录、将可执行文件copy到/usr/bin目录并设置权限、设置docker的systemd设定文件、设定docker服务开机启动等。
方便的是，已经有志愿者将所有安装命令整理成一个脚本，直接下载下来执行即可。
脚本下载地址：

https://github.com/liumiaocn/easypack/blob/master/docker/install-docker.sh

#!/bin/sh

usage(){
  echo "Usage: $0 FILE_NAME_DOCKER_CE_TAR_GZ"
  echo "       $0 docker-18.03.0--ce.tgz"
  echo "Get docker-ce binary from: https://download.docker.com/linux/static/stable/x86_64/"
  echo "eg: wget https://download.docker.com/linux/static/stable/x86_64/docker-18.03.0--ce.tgz"
  echo ""
}
SYSTEMDDIR=/usr/lib/systemd/system
SERVICEFILE=docker.service
DOCKERDIR=/usr/bin
DOCKERBIN=docker
SERVICENAME=docker

if [ $# -ne 1 ]; then
  usage
  exit 1
else
  FILETARGZ="$1"
fi

if [ ! -f ${FILETARGZ} ]; then
  echo "Docker binary tgz files does not exist, please check it"
  echo "Get docker-ce binary from: https://download.docker.com/linux/static/stable/x86_64/"
  echo "eg: wget https://download.docker.com/linux/static/stable/x86_64/docker-18.03.0--ce.tgz"
  exit 1
fi

echo "##unzip : tar xvpf ${FILETARGZ}"
tar xvpf ${FILETARGZ}
echo

echo "##binary : ${DOCKERBIN} copy to ${DOCKERDIR}"
cp -p ${DOCKERBIN}/* ${DOCKERDIR} >/dev/null 2>&1
which ${DOCKERBIN}

echo "##systemd service: ${SERVICEFILE}"
echo "##docker.service: create docker systemd file"
cat >${SYSTEMDDIR}/${SERVICEFILE} <<EOF
[Unit]
Description=Docker Application Container Engine
Documentation=http://docs.docker.com
After=network.target docker.socket
[Service]
Type=notify
EnvironmentFile=-/run/flannel/docker
WorkingDirectory=/usr/local/bin
ExecStart=/usr/bin/dockerd \
                -H tcp://0.0.0.0:4243 \
                -H unix:///var/run/docker.sock \
                --selinux-enabled=false \
                --log-opt max-size=1g
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=on-failure
[Install]
WantedBy=multi-user.target
EOF

echo ""

systemctl daemon-reload
echo "##Service status: ${SERVICENAME}"
systemctl status ${SERVICENAME}
echo "##Service restart: ${SERVICENAME}"
systemctl restart ${SERVICENAME}
echo "##Service status: ${SERVICENAME}"
systemctl status ${SERVICENAME}

echo "##Service enabled: ${SERVICENAME}"
systemctl enable ${SERVICENAME}

echo "## docker version"
docker version

4、安装部署

1、上传文件并设置执行权限，将脚本和文件放在同一级目录。

chmod +x install-docker.sh # 授予可执行权限

2、执行安装命令

./install-docker.sh docker-18.03.0-ce.tgz
安装过程最后，脚本会执行docker version命令来显示docker的版本。

image.png

说明：参考文章 https://www.kubernetes.org.cn/3831.html