RHCA之路---EX280(4)

RHCA之路—EX280(4)

1. 题目

Use the S2I functionality of your OpenShift instance to build an application in the rome project
Use the Git repository at http://services.lab.example.com/php-helloworld for the application source
Use the Docker image labeled registry.lab.example.com/rhscl/php-70-rhel7
Once deployed, the application must be reachable（and browseable）at the following address: http://hellophp.apps.lab.example.com
Update the original repository so that the index.php file contains the text from http://materials.example.com/exam280/mordor.txt instead of the word PHP
Trigger a rebuild so that when browsing http://hellophp.apps.lab.example.com it will display the new text

2. 解题

2.1 切换项目

一定要确认切换到了题目对应的项目,否则这题没分.

[root@master ~]# oc project rome
Now using project "rome" on server "https://master.lab.example.com".
[root@master ~]# mkdir ~/rome
[root@master ~]# cd ~/rome
[root@master rome]# oc projects
You have access to the following projects and can switch between them with 'oc project ':

    default
    ditto
    farm
    kube-public
    kube-service-catalog
    kube-system
    logging
    management-infra
    openshift
    openshift-ansible-service-broker
    openshift-infra
    openshift-node
    openshift-template-service-broker
    openshift-web-console
  * rome
    samples
    shrimp

2.2 创建app

[root@master rome]# oc new-app registry.lab.example.com/rhscl/php-70-rhel7~http://services.lab.example.com/php-helloworld
--> Found Docker image c101534 (6 years old) from registry.lab.example.com for "registry.lab.example.com/rhscl/php-70-rhel7"

    Apache 2.4 with PHP 7.0
    -----------------------
    PHP 7.0 available as docker container is a base platform for building and running various PHP 7.0 applications and frameworks. PHP is an HTML-embedded scripting language. PHP attempts to make it easy for developers to write dynamically generated web pages. PHP also offers built-in database integration for several commercial and non-commercial database management systems, so writing a database-enabled webpage with PHP is fairly simple. The most common use of PHP coding is probably as a replacement for CGI scripts.

    Tags: builder, php, php70, rh-php70

    * An image stream will be created as "php-70-rhel7:latest" that will track the source image
    * A source build using source code from http://services.lab.example.com/php-helloworld will be created
      * The resulting image will be pushed to image stream "php-helloworld:latest"
      * Every time "php-70-rhel7:latest" changes a new build will be triggered
    * This image will be deployed in deployment config "php-helloworld"
    * Port 8080/tcp will be load balanced by service "php-helloworld"
      * Other containers can access this service through the hostname "php-helloworld"

--> Creating resources ...
    imagestream "php-70-rhel7" created
    imagestream "php-helloworld" created
    buildconfig "php-helloworld" created
    deploymentconfig "php-helloworld" created
    service "php-helloworld" created
--> Success
    Build scheduled, use 'oc logs -f bc/php-helloworld' to track its progress.
    Application is not exposed. You can expose services to the outside world by executing one or more of the commands below:
     'oc expose svc/php-helloworld'
    Run 'oc status' to view your app.

2.3 创建app路由

[root@master rome]# oc expose svc/php-helloworld --hostname=hellophp.apps.lab.example.com
route "php-helloworld" exposed

2.4 克隆项目

[root@master rome]# git clone registry.lab.example.com/rhscl/php-70-rhel7
fatal: repository 'registry.lab.example.com/rhscl/php-70-rhel7' does not exist
[root@master rome]# git clone http://services.lab.example.com/php-helloworld
Cloning into 'php-helloworld'...
remote: Counting objects: 3, done.
remote: Compressing objects: 100% (2/2), done.
remote: Total 3 (delta 0), reused 0 (delta 0)
Unpacking objects: 100% (3/3), done.
[root@master rome]# cd php-helloworld/
[root@master php-helloworld]# curl http://materials.example.com/exam280/mordor.txt
exam280

2.5 修改index.html并长传

[root@master php-helloworld]# cat index.php
<?php
print "exam280\n";
?>
[root@master php-helloworld]# git config --global user.name "qiuqin"
[root@master php-helloworld]# git config --global user.email [email protected]
[root@master php-helloworld]# git config --global push.default simple
[root@master php-helloworld]# git add .
[root@master php-helloworld]# git commit -m 4
[master d0d382a] 4
 1 file changed, 1 insertion(+), 1 deletion(-)
[root@master php-helloworld]# git push
Counting objects: 5, done.
Delta compression using up to 2 threads.
Compressing objects: 100% (1/1), done.
Writing objects: 100% (3/3), 264 bytes | 0 bytes/s, done.
Total 3 (delta 0), reused 0 (delta 0)
To http://services.lab.example.com/php-helloworld
   6d61e75..d0d382a  master -> master

2.6 重构应用

[root@master php-helloworld]# oc start-build php-helloworld
build "php-helloworld-2" started

3. 确认

[root@master php-helloworld]# curl http://hellophp.apps.lab.example.com
exam280
[root@master php-helloworld]# oc get pods
NAME                     READY     STATUS      RESTARTS   AGE
php-helloworld-1-build   0/1       Completed   0          9m
php-helloworld-2-build   0/1       Completed   0          1m
php-helloworld-2-dmncr   1/1       Running     0          1m
[root@master php-helloworld]# oc get svc
NAME             TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)    AGE
php-helloworld   ClusterIP   172.30.55.47   <none>        8080/TCP   9m
[root@master php-helloworld]# oc get route
NAME             HOST/PORT                       PATH      SERVICES         PORT       TERMINATION   WILDCARD
php-helloworld   hellophp.apps.lab.example.com             php-helloworld   8080-tcp                 None