docker安装配置

docker安装配置

一、docker安装配置

修改主机名

[root@docker ~]#vi /etc/hostname

查看Linux系统信息

[root@docker ~]# cat /etc/redhat-release #查看版本号 CentOS Linux release 7.7.1908 (Core) [root@docker ~]# uname -r #查看linux内核 3.10.0-1062.el7.x86_64

替换为阿里云yum源

[root@docker ~]# wget -O /etc/yum.repos.d/CentOS-Base.repo #替换为阿里云yum [root@docker ~]# yum makecache #生成缓存仓库

安装docker

[root@docker ~]# yum install docker -y

启动docker

[root@docker ~]# systemctl start docker #启动docker [root@docker ~]# systemctl enable docker #添加开机启动 [root@docker ~]# systemctl status docker #查看docker状态

查看docker版本

[root@docker ~]# docker version Client: Version: 1.13.1 API version: 1.26 Package version: docker-1.13.1-161.git64e9980.el7_8.x86_64 Go version: go1.10.3 Git commit: 64e9980/1.13.1 Built: Tue Apr 28 14:43:01 2020 OS/Arch: linux/amd64 Server: Version: 1.13.1 API version: 1.26 (minimum version 1.12) Package version: docker-1.13.1-161.git64e9980.el7_8.x86_64 Go version: go1.10.3 Git commit: 64e9980/1.13.1 Built: Tue Apr 28 14:43:01 2020 OS/Arch: linux/amd64 Experimental: false

比如装nginx，从公有镜像查找，下载

[root@docker ~]# docker search nginx INDEX NAME DESCRIPTION STARS OFFICIAL AUTOMATED docker.io docker.io/nginx Official build of Nginx. 13212 [OK] [root@docker ~]# docker pull nginx Using default tag: latest Trying to pull repository docker.io/library/nginx ... latest: Pulling from docker.io/library/nginx afb6ec6fdc1c: Pull complete b90c53a0b692: Pull complete 11fa52a0fdc0: Pull complete Digest: sha256:30dfa439718a17baafefadf16c5e7c9d0a1cde97b4fd84f63b69e13513be7097 Status: Downloaded newer image for docker.io/nginx:latest [root@docker ~]# docker image ls REPOSITORY TAG IMAGE ID CREATED SIZE docker.io/nginx latest 9beeba249f3e 6 days ago 127 MB

启动nginx镜像

[root@docker ~]# docker run -p 8000:80 --name mynginx -d nginx ##-p指定服务器8000端口,映射容器80端口，容器名为mynginx，-d使用守护进程模式启动 886c281c102a68484f0788ad878b776cc609a8cd46af644d3e011859b48c2605 [root@docker ~]# docker ps #查看目前工作的容器 CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 886c281c102a nginx "nginx -g 'daemon ..." 33 seconds ago Up 33 seconds 0.0.0.0:8000->80/tcp mynginx [root@docker ~]# docker ps -a #查看所有已运行的容器 CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 886c281c102a nginx "nginx -g 'daemon ..." 41 seconds ago Up 40 seconds 0.0.0.0:8000->80/tcp mynginx

nginx已启动，此时可访问服务器IP地址加映射后的端口8000，即可访问到nginx服务页面

也可使用exec命令进入容器系统查看

[root@docker ~]# docker exec -it 886c281c102a /bin/bash root@886c281c102a:/# #主机名已发生变化

二、卸载docker

查询docker安装过的包

[root@docker ~]# yum list installed | grep docker docker.x86_64 2:1.13.1-161.git64e9980.el7_8 @extras docker-client.x86_64 2:1.13.1-161.git64e9980.el7_8 @extras docker-common.x86_64 2:1.13.1-161.git64e9980.el7_8 @extras

删除已安装的包

[root@docker ~]# yum remove docker.x86_64 docker-client.x86_64 docker-common.x86_64 -y

删除容器及镜像

[root@docker ~]# rm -rf /var/lib/docker/

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