使用Minishift v1.28.0，在Pod上部署WordPress和MariaDB
从红帽容器目录(RHCC)中获取基于Docker的镜像。
从可信赖的Red Hat容器目录（RHCC）作为源获取基本的Docker镜像。
这次我想借这个机会，在项目中获取WordPress的Docker镜像和MariaDB的Docker镜像，并设置引用连接。
获取WordPress的Docker镜像。
在红帽容器目录（RHCC）中搜索“WordPress”。
从列出的各种图像中，我选择了“WordPress与Nginx和PHP7(bitnami/wordpress-nginx-php7)”。
注册表似乎是registry.connect.redhat.com。
WordPress与Nginx和PHP7（registry.connect.redhat.com/bitnami/wordpress-nginx-php7）
在构建Docker镜像时，会使用环境变量作为参数来进行环境设置，因此需要确认配置。
根据Overview中的「README & Configuration Options」进行参考
VariableDescriptionDefaultMARIADB_HOSTHostname for MariaDB server.mariadbMARIADB_PORT_NUMBERPort used by MariaDB server.3306WORDPRESS_DATABASE_NAMEDatabase name that WordPress will use to connect with the database.bitnami_wordpressWORDPRESS_TABLE_PREFIXTable prefix to use in WordPress.wp_WORDPRESS_DATABASE_USERDatabase user that WordPress will use to connect with the database.bn_wordpressWORDPRESS_DATABASE_PASSWORDDatabase password that WordPress will use to connect with the database.No defaults.ALLOW_EMPTY_PASSWORDIt can be used to allow blank passwords.no
获取MariaDB的Docker镜像
VariableDescriptionNoteMYSQL_USERDatabase user name
MYSQL_PASSWORDUser’s password
MYSQL_DATABASEName of the database to create
MYSQL_ROOT_PASSWORDPassword for the ‘root’ MySQL accountOptional
MYSQL_PASSWORDUser’s password
MYSQL_DATABASEName of the database to create
MYSQL_ROOT_PASSWORDPassword for the ‘root’ MySQL accountOptional
将基础镜像注册到Minishift中
由于收集到了信息，我们将在minishift上拉取Docker镜像。
[tak@centos76 ~]$ minishift ssh
[docker@minishift ~]$ docker login registry.connect.redhat.com --username <username>
Password:<password>
Login Succeeded
[docker@minishift ~]$ docker search registry.connect.redhat.com/wordpress
INDEX NAME DESCRIPTION STARS OFFICIAL AUTOMATED
redhat.com registry.connect.redhat.com/bitnami/wordpress-apache-php5 This WordPress container solution is optim... 0
redhat.com registry.connect.redhat.com/bitnami/wordpress-apache-php7 This WordPress container solution is optim... 0
redhat.com registry.connect.redhat.com/bitnami/wordpress-nginx-php5 This WordPress container solution is optim... 0
redhat.com registry.connect.redhat.com/bitnami/wordpress-nginx-php7 This WordPress container solution is optim... 0
[docker@minishift ~]$ docker pull registry.connect.redhat.com/bitnami/wordpress-nginx-php7
Using default tag: latest
Trying to pull repository registry.connect.redhat.com/bitnami/wordpress-nginx-php7 ...
latest: Pulling from registry.connect.redhat.com/bitnami/wordpress-nginx-php7
367d84554057: Pull complete
:
119b0de383d9: Pull complete
Digest: sha256:7f9bef9632f2a9a87ff4c02ded5080d4048418d26913d3dacfb9cf1c6612ae04
Status: Downloaded newer image for registry.connect.redhat.com/bitnami/wordpress-nginx-php7:latest
[docker@minishift ~]$ exit
[tak@centos76 ~]$ oc import-image my-bitnami/wordpress-nginx-php7 --from=registry.connect.redhat.com/bitnami/wordpress-nginx-php7 --confirm
[docker@minishift ~]$ docker search registry.access.redhat.com/mariadb
INDEX NAME DESCRIPTION STARS OFFICIAL AUTOMATED
redhat.com registry.access.redhat.com/openshift3/mariadb-apb Ansible Playbook Bundle application defini... 0
redhat.com registry.access.redhat.com/rhosp12/openstack-mariadb Red Hat OpenStack Container image for open... 0
redhat.com registry.access.redhat.com/rhosp13/openstack-mariadb Red Hat OpenStack Container image for open... 0
redhat.com registry.access.redhat.com/rhosp14-beta/openstack-mariadb Red Hat OpenStack Beta Container image for... 0
redhat.com registry.access.redhat.com/rhscl/mariadb-100-rhel7 MariaDB 10.0 SQL database server 0
redhat.com registry.access.redhat.com/rhscl/mariadb-101-rhel7 MariaDB server 10.1 for OpenShift and gene... 0
redhat.com registry.access.redhat.com/rhscl/mariadb-102-rhel7 MariaDB is a multi-user, multi-threaded SQ... 0
[docker@minishift ~]$ docker pull registry.access.redhat.com/rhscl/mariadb-101-rhel7
Using default tag: latest
Trying to pull repository registry.access.redhat.com/rhscl/mariadb-101-rhel7 ...
latest: Pulling from registry.access.redhat.com/rhscl/mariadb-101-rhel7
23113ae36f8e: Pull complete
:
84c39a3a2476: Pull complete
sha256:eda05d7ccdd32f0993e880b8ee0d92bbd61abde6bb7450193fd4b67ea1eb0f1b
Status: Downloaded newer image for registry.access.redhat.com/rhscl/mariadb-101-rhel7:latest
[docker@minishift ~]$ exit
[tak@centos76 ~]$ oc import-image my-rhscl/mariadb-101-rhel7 --from=registry.access.redhat.com/rhscl/mariadb-101-rhel7 --confirm
我会预先检查一下已在注册表中登记过的Docker镜像。
[tak@centos76 ~]$ minishift ssh
Last login: Sat Dec 22 17:11:10 2018 from 192.168.42.1
[docker@minishift ~]$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
docker.io/openshift/origin-node v3.11.0 438d61da63d1 20 hours ago 1.16 GB
docker.io/openshift/origin-control-plane v3.11.0 00f980c345c1 20 hours ago 825 MB
docker.io/openshift/origin-hyperkube v3.11.0 d65ee3cc9874 20 hours ago 506 MB
docker.io/openshift/origin-haproxy-router v3.11.0 316c2621011d 20 hours ago 407 MB
docker.io/openshift/origin-pod v3.11.0 045ddf827c75 20 hours ago 258 MB
docker.io/openshift/origin-deployer v3.11.0 d05e619aac21 20 hours ago 380 MB
docker.io/openshift/origin-hypershift v3.11.0 a777d85d24b9 20 hours ago 546 MB
docker.io/openshift/origin-cli v3.11.0 83d7b0b2f011 20 hours ago 380 MB
172.30.1.1:5000/openshift/mariadb <none> 5e784880fd90 2 weeks ago 458 MB
registry.access.redhat.com/rhscl/mariadb-101-rhel7 latest a4deee8ed5a5 3 weeks ago 455 MB
registry.connect.redhat.com/bitnami/wordpress-nginx-php7 latest 2892cd4d344e 5 weeks ago 580 MB
docker.io/openshift/origin-web-console v3.11.0 be30b6cce5fa 2 months ago 339 MB
docker.io/openshift/origin-docker-registry v3.11.0 a0d5ad164395 2 months ago 305 MB
docker.io/openshift/origin-service-serving-cert-signer v3.11 47dadf9d43b6 2 months ago 276 MB
创建MariaDB的Pod
我们将在下方显示的”环境变量”中输入刚刚查到的值。
就像这样(笑)。
VariableDescriptionValueMYSQL_USERDatabase user nameuserMYSQL_PASSWORDUser’s passwordpasswordMYSQL_DATABASEName of the database to createwordpress_dbMYSQL_ROOT_PASSWORDPassword for the ‘root’ MySQL accountroot_password
请点击“部署”按钮。
确认MariaDB服务
使用WordPress创建Pod
VariableDefaultValueMARIADB_HOSTmariadbmariadb-101-rhel7.myproject.svcMARIADB_PORT_NUMBER3306←WORDPRESS_DATABASE_NAMEbitnami_wordpresswordpress_dbWORDPRESS_TABLE_PREFIXwp_←WORDPRESS_DATABASE_USERbn_wordpressuserWORDPRESS_DATABASE_PASSWORDNo defaults.passwordALLOW_EMPTY_PASSWORDno←
环境变量未定义，默认将采用默认值。
$ minishift stop
$ minishift start
（-。-)y-゜゜゜ 可以用下面的方式来表达： 令我感到困惑或者惊讶。
为WordPress创建一个路由器。
在浏览器中访问的URL将与Hostname中显示的URL相同。
祝愿WordPress+MariaDB！
当您点击链接时，WordPress页面会显示出来！
如果你希望稍后更改环境变量
博客名为“用户的博客”。
当再次仔细查看“自述文件和配置选项”时，可以注意到这是一个环境变量…
VariableDescriptionDefaultWORDPRESS_USERNAMEWordPress application username.userWORDPRESS_PASSWORDWordPress application password.bitnamiWORDPRESS_EMAILWordPress application email.user@example.comWORDPRESS_FIRST_NAMEWordPress user first name.FirstNameWORDPRESS_LAST_NAMEWordPress user last name.LastNameWORDPRESS_BLOG_NAMEWordPress blog name. DefaultUser’s blog
让我们轻松地尝试更改博客名称和用户。
一次重新启动机器，然后再次部署…。如果加上电脑内存会好吗？
