Docker持续体验

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Docker持续体验

第一次听说到Docker是在2016年的时候，最近因为百度云服务器到期，要将一些服务迁移到阿里云上，在安装一些中间件的时候，才体会到了Docker的强大。

安装Docker

主要记录在Linux上安装，Windows可以直接下载.msi安装程序安装。

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检查Linux内核版本，Docker要求Linux内核版本高于3.10
uname -r

更新系统yum源
yum update
... // 省略更新代码

卸载旧版本，如果有安装Docker
sudo yum remove docker  docker-common docker-selinux docker-engine

安装需要的安装包
sudo yum install -y yum-utils device-mapper-persistent-data lvm2

设置Docker的yum源
sudo yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

查看所有Docker仓库中的版本，选定版本进行安装
yum list docker-ce --showduplicates | sort -r

安装Docker
sudo yum install docker-ce-19.03.5 docker-ce-cli-19.03.5 containerd.io

Docker镜像拉取

镜像拉取命令十分简单，只需要执行如下：

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docker search nginx

NAME                               DESCRIPTION                                     STARS               OFFICIAL            AUTOMATED
nginx                              Official build of Nginx.                        12821               [OK]                
jwilder/nginx-proxy                Automated Nginx reverse proxy for docker con…   1752                                    [OK]
richarvey/nginx-php-fpm            Container running Nginx + PHP-FPM capable of…   759                                     [OK]
linuxserver/nginx                  An Nginx container, brought to you by LinuxS…   96                                      
bitnami/nginx                      Bitnami nginx Docker Image                      78                                      [OK]
tiangolo/nginx-rtmp                Docker image with Nginx using the nginx-rtmp…   64                                      [OK]
jc21/nginx-proxy-manager           Docker container for managing Nginx proxy ho…   46                                      
nginxdemos/hello                   NGINX webserver that serves a simple page co…   42                                      [OK]
nginx/unit                         NGINX Unit is a dynamic web and application …   36                                      
jlesage/nginx-proxy-manager        Docker container for Nginx Proxy Manager        35                                      [OK]
nginx/nginx-ingress                NGINX Ingress Controller for Kubernetes         28                                      
privatebin/nginx-fpm-alpine        PrivateBin running on an Nginx, php-fpm & Al…   22                                      [OK]
schmunk42/nginx-redirect           A very simple container to redirect HTTP tra…   18                                      [OK]
nginxinc/nginx-unprivileged        Unprivileged NGINX Dockerfiles                  13                                      
blacklabelops/nginx                Dockerized Nginx Reverse Proxy Server.          13                                      [OK]
centos/nginx-18-centos7            Platform for running nginx 1.8 or building n…   12                                      
centos/nginx-112-centos7           Platform for running nginx 1.12 or building …   12                                      
raulr/nginx-wordpress              Nginx front-end for the official wordpress:f…   12                                      [OK]
nginx/nginx-prometheus-exporter    NGINX Prometheus Exporter                       9                                       
sophos/nginx-vts-exporter          Simple server that scrapes Nginx vts stats a…   7                                       [OK]
mailu/nginx                        Mailu nginx frontend                            6                                       [OK]
bitnami/nginx-ingress-controller   Bitnami Docker Image for NGINX Ingress Contr…   4                                       [OK]
ansibleplaybookbundle/nginx-apb    An APB to deploy NGINX                          1                                       [OK]
wodby/nginx                        Generic nginx                                   0                                       [OK]
centos/nginx-110-centos7           Platform for running nginx 1.10 or building …   0

选择需要拉取的镜像执行

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docker pull nginx:latest

Docker容器启动

以启动Mysql镜像为例：

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docker run -p 本机映射端口:镜像映射端口 -d  --name 启动镜像名称 -e 镜像启动参数  镜像名称:镜像版本号

-p                本机端口和容器启动端口映射
-d                后台运行
--name        容器名称
-e                 镜像启动参数 

docker run -p 3306:3306 -d --name mysql01 -e MYSQL_ROOT_PASSWORD=admin mysql:5.6

Docker可视化管理工具

可以参考Portainer工具