docker engine docker-compose部署

查看一下当前系统版本

[root@kpc ~]# cat /etc/centos-release
CentOS Linux release 7.4.1708 (Core) 

卸载旧版本的docker

$ sudo yum remove docker \
                  docker-client \
                  docker-client-latest \
                  docker-common \
                  docker-latest \
                  docker-latest-logrotate \
                  docker-logrotate \
                  docker-engine

安装docker 仓库

安装yum-utils包管理工具

$ sudo yum install -y yum-utils

然后通过yum-utils安装docker-ce.repo

$ sudo yum-config-manager \
    --add-repo \
    https://download.docker.com/linux/centos/docker-ce.repo

安装docker engine

1. 安装最新版本的docker 引擎和容器

$ sudo yum install docker-ce docker-ce-cli containerd.io

2. 可以使用yum list docker-ce --showduplicates | sort -r查看一下现有的版本，然后选择一个安装

$ yum list docker-ce --showduplicates | sort -r
 * updates: mirrors.aliyun.com
Loading mirror speeds from cached hostfile
Loaded plugins: fastestmirror
Installed Packages
 * extras: mirrors.aliyun.com
docker-ce.x86_64    3:20.10.2-3.el7                            docker-ce-stable 
docker-ce.x86_64    3:20.10.2-3.el7                            @docker-ce-stable
docker-ce.x86_64    3:20.10.1-3.el7                            docker-ce-stable 
docker-ce.x86_64    3:20.10.0-3.el7                            docker-ce-stable 

​ 安装命令

$ sudo yum install docker-ce-20.10.2 docker-ce-cli-20.10.2 containerd.io

3. 启动docker

$ sudo systemctl start docker

4. 通过运行一个测试image来验证docker engine安装成功,这个命令会下载一个测试镜像并且在一个容器理运行起来

$ docker run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
0e03bdcc26d7: Pull complete 
Digest: sha256:1a523af650137b8accdaed439c17d684df61ee4d74feac151b5b337bd29e7eec
Status: Downloaded newer image for hello-world:latest

Hello from Docker!
This message shows that your installation appears to be working correctly.

To generate this message, Docker took the following steps:
 1. The Docker client contacted the Docker daemon.
 2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
    (amd64)
 3. The Docker daemon created a new container from that image which runs the
    executable that produces the output you are currently reading.
 4. The Docker daemon streamed that output to the Docker client, which sent it
    to your terminal.

To try something more ambitious, you can run an Ubuntu container with:
 $ docker run -it ubuntu bash

Share images, automate workflows, and more with a free Docker ID:
 https://hub.docker.com/

For more examples and ideas, visit:
 https://docs.docker.com/get-started/

到此，docker engine就安装完了，下面

安装docker-compose

下载docker compose

curl -L "https://github.com/docker/compose/releases/download/1.27.4/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose

赋执行权限

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

创建软链接

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

验证安装成功

$ docker-compose --version
docker-compose version 1.27.4, build 40524192