CentOS7.6离线安装docker

CentOS7.6离线安装docker

2019/10/24,docker

摘要：CentOS 7.6中离线安装docker 18.06.3以及docker-compose 1.24.1

在线安装可参照 文档

Ubuntu18.04离线安装docker可以参考博客Ubuntu18.04通过deb包离线安装docker-ce

所需环境

1.CentOS 7.6，内核版本需要大于3.10（使用uname -r查看内核版本）

2.docker安装包18.06.3（19版本我在使用中报了oci runtime的错误，但是18版本没问题）

建立安装脚本

将docker-18.06.3-ce.tgz传输到CentOS系统后，同目录下新建脚本install-docker.sh，输入以下内容：

#!/bin/sh

usage(){

  echo "使用方法: $0 FILE_NAME_DOCKER_CE_TAR_GZ"

  echo "       	  $0 docker-18.06.3-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-18.06.3-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-18.06.3-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}

cat >/etc/docker/daemon.json <<EOF

{

  "registry-mirrors": ["http://hub-mirror.c.163.com"]

}

EOF

swapoff -a

iptables -P FORWARD ACCEPT

sysctl --system

systemctl daemon-reload

systemctl restart docker.service

echo "## docker version"

docker version

运行安装脚本

脚本新建好后应该如下图所示



接下来运行脚本安装：

sudo sh install-docker.sh docker-18.06.3-ce.tgz

安装会自动启用docker服务，自启动等。

最后输出docker版本即表示已经安装成功



如果是非root账号，此时使用docker run等命令总是需要sudo权限，需要给当前用户添加docker权限

添加docker权限

建立docker组：

sudo groupadd docker

将当前用户加入 docker 组：

sudo usermod -aG docker $USER

重启 docker 服务：

sudo service docker restart

此时断开ssh重新连接（或者退出当前终端并重新登录）

运行docker run不再提示没有权限

安装docker-compose

以下命令会联网下载docker-compose到 /usr/local/bin/目录下：

sudo curl -L https://get.daocloud.io/docker/compose/releases/download/1.24.1/docker-compose-`uname -s`-`uname -m` > /usr/local/bin/docker-compose

#或使用github的地址（速度可能会慢一点）

#sudo curl -L https://github.com/docker/compose/releases/download/1.24.1/docker-compose-`uname -s`-`uname -m` > /usr/local/bin/docker-compose

经过我自己的验证，非root账户使用上面两个指令是报错的：

-bash: /usr/local/bin/docker-compose: Permission denied，提示权限拒绝

下载到当前文件夹，之后在copy到/usr/local/bin/就好了

如果不能联网，可以在别的系统下下载好，拷贝到/usr/local/bin/目录下也是可以的：

sudo cp -r docker-compose /usr/local/bin/docker-compose

接下来对二进制包赋予权限：

```bash

sudo chmod +x /usr/local/bin/docker-compose

软链接到/usr/bin/下，防止sudo docker-compose出现command not found：

sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose

完成后，docker-compose即可使用：

docker-compose --version