在centos上安裝過docker的都知道，yum install docker ，這種方式安裝的docker，最新版的centos系統上，版本應該是1.13.1，而目前最新版的docker到了18.03.0了。那麼怎麼安裝最新版的docker-ce呢？

1、系統要求

Linux作業系統核心要不低於3.10，並且要支援systemd。

2、下載最新版的docker

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我下載的是18.03.0版本。

3、安裝部署方式說明

整個安裝部署過程大致可分為將介質解壓出docker目錄、將可執行檔案copy到/usr/bin目錄並設定許可權、設定docker的systemd設定檔案、設定docker服務開機啟動等。 方便的是，已經有志願者將所有安裝命令整理成一個指令碼，直接下載下來執行即可。 指令碼下載地址：

#!/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、安裝部署

1、上傳檔案並設定執行許可權，將指令碼和檔案放在同一級目錄。

chmod +x install-docker.sh # 授予可執行許可權

2、執行安裝命令

./install-docker.sh docker-18.03.0-ce.tgz 安裝過程最後，指令碼會執行docker version命令來顯示docker的版本。

 

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