【linux下centos7.9安装docker,docker-composed(root用户)】

一 安装docker

1.联网下载安装docker

curl -fsSL https://get.docker.com | bash -s docker --mirror Aliyun
2.安装成功

docker -v
3.将docker注册为service,进入/etc/systemd/system/目录,并创建docker.service文件(注意insecure-registry修改成自己的地址)

cd /etc/systemd/system/

touch docker.service

输入内容

python 复制代码
[Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
After=network-online.target firewalld.service
Wants=network-online.target
  
[Service]
Type=notify
# the default is not to use systemd for cgroups because the delegate issues still
# exists and systemd currently does not support the cgroup feature set required
# for containers run by docker
ExecStart=/usr/bin/dockerd --selinux-enabled=false --insecure-registry=127.0.0.1
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 the docker process if it exits prematurely
Restart=on-failure
StartLimitBurst=3
StartLimitInterval=60s
  
[Install]
WantedBy=multi-user.target

4.给docker.service文件添加执行权限

chmod +x /etc/systemd/system/docker.service
5.重新加载配置文件(每次有修改docker.service文件时都要重新加载下)

systemctl daemon-reload
6.启动docker

systemctl start docker
7.设置开机启动

systemctl enable docker.service
8.查看docker启动状态

systemctl status docker

二 安装docker-composed

1.安装docker-composed,并放到/usr/local/bin/下面,

curl -L "https://github.com/docker/compose/releases/download/v2.18.1/docker-compose- ( u n a m e − s ) − (uname -s)- (uname−s)−(uname -m)" -o /usr/local/bin/docker-compose
2.并赋予权限

sudo chmod +x /usr/local/bin/docker-compose
3.检查版本

docker-compose -v

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