OpenShift_031：部署 MyBank 到 JBoss EAP 7

环境：OCP 3.4

本实验全部材料来自我的同事陈耿，在此表示感谢！

MyBank 是一个基于 Maven 构建的 Java Web 应用。

1. 克隆 mybank 到本地 （在 MAC 机器上操作）
cd ~/mygit
git clone https://github.com/nichochen/mybank-demo-maven.git

2. 拷贝到 Registry 机器上（在 MAC 机器上操作）
cd ~/mygit
scp -r mybank-demo-maven/ root@registry.example.com:/opt/

3. 初始化 mybank git 仓库（在 Registry 机器上操作）
mkdir -p /opt/git/repo/mybank.git;
cd /opt/git/repo/mybank.git;
git init --bare;
git update-server-info;
mv hooks/post-update.sample hooks/post-update;

4. 拷贝 mybank 代码，并提交（在 Registry 机器上操作）
cd /opt;
git clone file:///opt/git/repo/mybank.git/;

cp mybank-demo-maven/* mybank -rf;
cp mybank-demo-maven/.sti mybank -rf;
cp mybank-demo-maven/.htaccess mybank -rf;
cp mybank-demo-maven/.gitignore mybank -rf;
cd mybank;
git add .;
git commit -m 'initial upload';
git push origin master;

5. 验证 mybank git 仓库是否创建成功（在所有机器上操作）
cd /tmp;
git clone http://git.example.com/git/mybank.git/;

6. 从 OCP 控制台部署 MyBank 
搜索 eap，选择 eap70-basic-s2i

选择 mybank bc，点击 Start Build
An error occurred while starting the build.Error resolving ImageStreamTag jboss-eap70-openshift:1.4 in namespace openshift: imagestreams "jboss-eap70-openshift" not found

oc get is jboss-eap70-openshift -n openshift
发现确实没有 jboss-eap70-openshift Image Stream

7. 克隆 application-templates 到本地 （在 MAC 机器上操作）
cd ~/mygit
git clone https://github.com/jboss-openshift/application-templates.git

8. 拷贝 application-templates 到 Master 机器上（在 MAC 机器上操作）
cd ~/mygit
scp -r application-templates/ root@master.example.com:/opt/

9. 创建 JBoss Image Stream（在 Master 机器上操作）
cd /opt
由于默认的 Image Stream 指向的是 registry.access.redhat.com，需要修改为 registry.example.com:5000。

REDHAT_REG="registry.access.redhat.com";
PRIVATE_REG="registry.example.com:5000";
sed s/"${REDHAT_REG}"/"${PRIVATE_REG}"/g application-templates/jboss-image-streams.json |sed '/"creationTimestamp": null/a\\t,"annotations": {"openshift.io/image.insecureRepository": "true"}' |oc create -n openshift -f - ;

检查 jboss-eap70-openshift Image Stream 是否创建成功
oc get is -n openshift
输出如下：
NAME                                  DOCKER REPO                                                                TAGS                     
jboss-eap70-openshift                 registry.example.com:5000/jboss-eap-7/eap70-openshift

如果不成功，删除所有导入的 Image Stream，然后在重试。
oc delete is jboss-amq-62 -n openshift
oc delete is jboss-datagrid65-openshift -n openshift
oc delete is jboss-datavirt63-openshift -n openshift
oc delete is jboss-decisionserver62-openshift -n openshift
oc delete is jboss-decisionserver63-openshift -n openshift
oc delete is jboss-eap64-openshift -n openshift
oc delete is jboss-eap70-openshift -n openshift
oc delete is jboss-processserver63-openshift -n openshift
oc delete is jboss-webserver30-tomcat7-openshift -n openshift
oc delete is jboss-webserver30-tomcat8-openshift -n openshift
oc delete is redhat-sso70-openshift -n openshift

导入后的 Image Stream 有个问题，就是没有 Tags，还需要导入相应的 Image。
docker tag registry.access.redhat.com/jboss-eap-7/eap70-openshift:latest registry.example.com:5000/jboss-eap-7/eap70-openshift:latest (之前已做)
docker push registry.example.com:5000/jboss-eap-7/eap70-openshift (之前已做)
oc import-image jboss-eap70-openshift --insecure -n openshift
再次检查 jboss-eap70-openshift Image Stream 是否创建成功，这次有了 Tag：latest
oc get is -n openshift
NAME                                  DOCKER REPO                                                                   TAGS                         UPDATED
jboss-eap70-openshift                 registry.example.com:5000/jboss-eap-7/eap70-openshift                         latest

10. 从命令行部署 MyBank 
检查 template 参数

oc describe template eap70-basic-s2i -n openshift
oc process --parameters eap70-basic-s2i -n openshift

创建应用
oc new-app --template=eap70-basic-s2i --param=APPLICATION_NAME=mybank --param=SOURCE_REPOSITORY_URL=http://git.example.com/git/mybank.git --param=SOURCE_REPOSITORY_REF=master --param=CONTEXT_DIR=

发现错误依旧，发现是 template 要去寻找 jboss-eap70-openshift:1.4 镜像。
修改 template
oc edit template eap70-basic-s2i -n openshift
把 name: jboss-eap70-openshift:1.4 改成 name: jboss-eap70-openshift:latest。

重新部署，终于开始 build 了，不过有 Maven 错误，原来是无法下载外网的 Maven 构件。
启动 MAC 上的 Nexus，作为 Maven 镜像代理。
重新发起一次新的 build，这次终于成功了！
oc start-build mybank -e MAVEN_MIRROR_URL='http://192.168.56.1:8081/nexus/content/groups/public/'

参考文献：
1. https://github.com/nichochen/mybank-demo-maven