Docker-CE的官方 install.sh 其实已经是过期了，在一些系统上，安装是有问题的，例如 Cent OS 及 RHEL （我知道 RHEL 应该是安装 Docker ee）。以下脚本可以支持多系统一个脚本搞定。
支持的系统
包括以下的，但对应的系统要求，请点击对应的系统查看。
安装脚本
#!/bin/sh
set -e
get_distribution() {
lsb_dist=""
# Every system that we officially support has /etc/os-release
if [ -r /etc/os-release ]; then
lsb_dist="$(. /etc/os-release && echo "$ID")"
fi
# Returning an empty string here should be alright since the
# case statements don't act unless you provide an actual value
echo "$lsb_dist"
}
befor_install_docker() {
user="$(id -un 2>/dev/null || true)"
sh_c='sh -c'
if [ "$user" != 'root' ]; then
if command_exists sudo; then
sh_c='sudo -E sh -c'
elif command_exists su; then
sh_c='su -c'
else
cat >&2 <<-'EOF'
Error: this installer needs the ability to run commands as root.
We are unable to find either "sudo" or "su" available to make this happen.
EOF
exit 1
fi
fi
lsb_dist=$( get_distribution )
lsb_dist="$(echo "$lsb_dist" | tr '[:upper:]' '[:lower:]')"
case "$lsb_dist" in
centos)
# add aliyun epel repo
sudo cp /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo_back
sudo wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
sudo yum makecache -y
sudo yum install -y epel-release
;;
esac
}
install_docker() {
lsb_dist=$( get_distribution )
lsb_dist="$(echo "$lsb_dist" | tr '[:upper:]' '[:lower:]')"
case "$lsb_dist" in
redhat|rhel)
# https://docs.docker.com/install/linux/docker-ce/centos/
sudo yum remove -y docker \
docker-client \
docker-client-latest \
docker-common \
docker-latest \
docker-latest-logrotate \
docker-logrotate \
docker-engine
sudo yum install -y yum-utils \
device-mapper-persistent-data \
lvm2
sudo yum-config-manager \
--add-repo \
https://download.docker.com/linux/centos/docker-ce.repo
sudo yum install -y containerd.io docker-ce-18.09.1 docker-ce-cli-18.09.1
;;
amzn)
sudo yum update -y
sudo amazon-linux-extras install docker
;;
*)
curl -fsSL https://get.docker.com | bash
;;
esac
}
after_install_docker() {
sudo usermod -aG docker `logname`
lsb_dist=$( get_distribution )
lsb_dist="$(echo "$lsb_dist" | tr '[:upper:]' '[:lower:]')"
case "$lsb_dist" in
# start docker for centos/fedora/redhat
centos|fedora|redhat|rhel)
sudo systemctl enable docker.service
sudo systemctl start docker
;;
amzn)
sudo service docker start
;;
esac
case "$lsb_dist" in
# install iptable_nat for redhat
redhat|rhel)
sudo modprobe iptable_nat
# persistent
cat > /etc/sysconfig/modules/dockerd.modules <<- ENDEND
#!/bin/sh
exec /sbin/modprobe iptable_nat >/dev/null 2>&1
ENDEND
sudo chmod +x /etc/sysconfig/modules/dockerd.modules
;;
esac
}
install() {
befor_install_docker
install_docker
after_install_docker
}
install关键的点
对于 Debian、Ubuntu、Amazon Linux、Fedora 这些系统没什么好说的，关键是 Cent OS 及 RHEL 这两个。
Cent OS 需要使用第三方源来安装，还不能用 epel 这个源，里面并没有 docker ce的东西。我用的是 aliyun 的。添加完源，就可以使用 docker 官方的安装脚本安装了。
对于 RHEL，可以直接按照 docker-ce/centos 这个来安装。但是，安装完后，会发现网络有问题（具体是什么问题我就不贴出了），需要用以下方法处理才可以。
sudo modprobe iptable_nat
cat > /etc/sysconfig/modules/dockerd.modules <<- ENDEND
#!/bin/sh
exec /sbin/modprobe iptable_nat >/dev/null 2>&1
ENDEND
sudo chmod +x /etc/sysconfig/modules/dockerd.modules
