使用本脚本可以完成 Centos7 下的 docker 以及 docker-compose 自动安装。

完整脚本

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#!/usr/bin/env bash
set -Eeuo pipefail

echo "Updating DNS"
sed -i 's/#UseDNS yes/UseDNS no/g' /etc/ssh/sshd_config
systemctl restart sshd

echo "Updating Firewalld"
systemctl stop firewalld
systemctl disable firewalld
setenforce 0
sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/sysconfig/selinux
sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config


rm -rf  /etc/yum.repos.d/*
curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo
sed -i -e '/mirrors.cloud.aliyuncs.com/d' -e '/mirrors.aliyuncs.com/d' /etc/yum.repos.d/CentOS-Base.repo

yum makecache
yum install -y yum-utils device-mapper-persistent-data lvm2 
yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
sed -i 's+download.docker.com+mirrors.aliyun.com/docker-ce+' /etc/yum.repos.d/docker-ce.repo
yum install docker-ce -y


systemctl enable docker
mkdir -p /etc/docker
tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["https://vsktzm61.mirror.aliyuncs.com"]
}
EOF
systemctl daemon-reload
systemctl restart docker

yum install python3 -y
pip3 install setuptools pip -U -i https://pypi.tuna.tsinghua.edu.cn/simple
pip3 install docker-compose -i https://mirrors.aliyun.com/pypi/simple/

tee docker-compose.yml <<-'EOF'
version: '3'
services:
  postgres:
    image: postgres:13-alpine
    ports:
      - "5432:5432"
    environment:
      POSTGRES_PASSWORD: 123456
    command: postgres -c max_connections=2000 -c statement_timeout=20000 -c idle_in_transaction_session_timeout=15000
    networks:
      - docker
networks:
  docker:
    external: false  
EOF

docker-compose up -d

分段解释

关闭SSH的DNS查询

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echo "Updating DNS"
sed -i 's/#UseDNS yes/UseDNS no/g' /etc/ssh/sshd_config
systemctl restart sshd

可以加快ssh的登录验证速度

关闭防火墙

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echo "Updating Firewalld"
systemctl stop firewalld
systemctl disable firewalld
setenforce 0
sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/sysconfig/selinux
sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config

建议在开发环境中关闭，在生产环境下不关闭

配置阿里云软件源

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rm -rf  /etc/yum.repos.d/*
curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo
sed -i -e '/mirrors.cloud.aliyuncs.com/d' -e '/mirrors.aliyuncs.com/d' /etc/yum.repos.d/CentOS-Base.repo
yum makecache

使用阿里源作为软件源

此处会删除掉 /etc/yum.repos.d/ 内的所有文件，可适当修改

安装docker

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yum install -y yum-utils device-mapper-persistent-data lvm2 
yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
sed -i 's+download.docker.com+mirrors.aliyun.com/docker-ce+' /etc/yum.repos.d/docker-ce.repo
yum install docker-ce -y

设置docker镜像加速

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systemctl enable docker
mkdir -p /etc/docker
tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["https://vsktzm61.mirror.aliyuncs.com"]
}
EOF
systemctl daemon-reload
systemctl restart docker

采用的阿里云的镜像加速，也可以自己申请 加速地址

安装docker-compose并启动

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yum install python3 -y
pip3 install setuptools pip -U -i https://pypi.tuna.tsinghua.edu.cn/simple
pip3 install docker-compose -i https://mirrors.aliyun.com/pypi/simple/
tee docker-compose.yml <<-'EOF'
version: '3'
services:
  postgres:
    image: postgres:13-alpine
    ports:
      - "5432:5432"
    environment:
      POSTGRES_PASSWORD: 123456
    command: postgres -c max_connections=2000 -c statement_timeout=20000 -c idle_in_transaction_session_timeout=15000
    networks:
      - docker
networks:
  docker:
    external: false  
EOF
docker-compose up -d