啟用 mariadb

1. docker search 搜尋 mariadb 相關的映像檔，選用 centos/mariadb-102-centos7。

   [root@dyw219 ~]# docker search mariadb
   NAME                       DESCRIPTION                           STARS OFFICIAL AUTOMATED
   mariadb                    MariaDB is a community-developed...   2942  [OK]     
   bitnami/mariadb            Bitnami MariaDB Docker Image          105            [OK]
   linuxserver/mariadb        A Mariadb container, brought to ...   79             
   toughiq/mariadb-cluster    Dockerized Automated MariaDB Gal...   38             [OK]
   colinmollenhour/mariadb-ga MariaDb w/ Galera Cluster, DNS-b...   26             [OK]
   panubo/mariadb-galera      MariaDB Galera Cluster                23             [OK]
   lsioarmhf/mariadb          ARMHF based Linuxserver.io imageb     18             
   million12/mariadb          MariaDB 10 - ~60Mb Alpine UTF-8       16             [OK]
   webhippie/mariadb          Docker images for MariaDB             15             [OK]
   mariadb/server             MariaDB Server is a modern datab...   14             [OK]
   centos/mariadb-101-centos7 MariaDB 10.1 SQL database server      10             
   bianjp/mariadb-alpine      Lightweight MariaDB docker image...   10             [OK]
   severalnines/mariadb       A homogeneous MariaDB Galera Clu...   7              [OK]
   centos/mariadb-102-centos7 MariaDB 10.2 SQL database server      6              
   wodby/mariadb              Alpine-based MariaDB container i...   4              [OK]
   tutum/mariadb              Base docker image to run a Maria...   4              
   circleci/mariadb           CircleCI images for MariaDB           3              [OK]
   tiredofit/mariadb-backup   MariaDB Backup image to backup M...   2              [OK]
   rightctrl/mariadb          Mariadb with Galera support           2              [OK]
   jonbaldie/mariadb          Fast, simple, and lightweight Ma...   2              [OK]
   kitpages/mariadb-galera    MariaDB with Galera                   2              [OK]
   demyx/mariadb              FROM webhippie/mariadb:latest         0              
   jelastic/mariadb           An image of the MariaDB SQL data...   0              
   alvistack/mariadb           Docker Image Packaging for Mari      0              [OK]
   ansibleplaybookbundle/mari An APB which deploys RHSCL Maria      0              [OK]
   

2. 使用 centos/mariadb-102-centos7 映像檔，Docker run 啟動名為 mdb 的 mariadb 資料庫，-e 設定環境變數 MYSQL_ROOT_PASSWORD，-d 背景執行。

   [root@dyw219 ~]# docker run --name mdb -e MYSQL_ROOT_PASSWORD=123qwe \
   -d centos/mariadb-102-centos7
   282553feccf23b29465fabadb1fbb96fd326570724f23d3c97fa0d366677661a
   

3. docker ps 查看容器。

   [root@dyw219 ~]# docker ps
   CONTAINER ID IMAGE                      COMMAND                  
   282553feccf2 centos/mariadb-102-centos7 "container-entrypoint"   
   
   CREATED             STATUS              PORTS               NAMES
   2 minutes ago       Up 2 minutes        3306/tcp            mdb
   

4. docker inspect 查看容器的 IP 是 172.17.0.2。

   [root@dyw219 ~]# docker inspect mdb | grep IPAddress
           "SecondaryIPAddresses": null,
           "IPAddress": "172.17.0.2",
                   "IPAddress": "172.17.0.2",