{"id":1277,"date":"2012-05-10T19:00:00","date_gmt":"2012-05-10T19:00:00","guid":{"rendered":"http:\/\/www.javacodegeeks.com\/2012\/10\/troubleshooting-play-framework-2-apps-on-openshift.html"},"modified":"2012-10-22T05:14:43","modified_gmt":"2012-10-22T05:14:43","slug":"troubleshooting-play-framework-2-apps","status":"publish","type":"post","link":"https:\/\/www.javacodegeeks.com\/2012\/05\/troubleshooting-play-framework-2-apps.html","title":{"rendered":"Troubleshooting Play Framework 2 apps on Openshift"},"content":{"rendered":"
Troubleshooting Openshift<\/strong>
\n <\/strong> <\/p>\n
With the do-it-yourself<\/a> application type you really get a lot of freedom to support almost any framework or server that can be built and run on a linux box. But you do have to make your homework, and do some research. <\/div>\n
\n<\/div>\n
So in this article I\u2019ll show you a couple of tips I learnt playing around with Openshift<\/a> and Play Framework<\/a>. <\/div>\n
Comments are more than welcome, so I hope you can also provide me some more tips to help us all get our apps running on the cloud. <\/div>\n
\n<\/div>\n
Providing native support for play framework application<\/strong><\/div>\n
 <\/strong> <\/div>\n
Right now, the solution we found for deploying Play 2.0 apps on openshift<\/a> is quite handy, but we could make it a little better.. <\/div>\n
\n<\/div>\n
The problem is that we have to compile the app locally (issuing play stage<\/i>) and then push 30 MB of libraries to Openshift. The ideal thing, and that\u2019s what we did with the Play 1.x quickstart<\/a> and with the latest version of Openshift module for Play Framework 1.x<\/a>, would be to just upload our sources and then let Openshift download and install Play, compile our app, and start it. <\/div>\n
\n<\/div>\n
Unfortunately we\u2019ve ran with some memory constraints (seems like compiling Play 2 apps is a bit memory demanding) that eventually raised some issues. We are trying to work them out, but perhaps, with this tips, you could help has troubleshoot it. <\/div>\n
\n<\/div>\n
With the opensourcing of Openshift<\/a> and the new Origin livecd<\/a> we have more tools available for us to further investigate what\u2019s going on, I just didn\u2019t have time yet to start playing with it. <\/div>\n
\n<\/div>\n
So, enought chatter, and let\u2019s get our hands dirty. <\/div>\n
\n<\/div>\n
Houston, we have a problem<\/strong><\/div>\n
 <\/strong> <\/div>\n
All right, you\u2019ve just read this guide<\/a> or followed our steps on the Play Framework webinar<\/a> using this Play 2.0 quickstart<\/a> (in fact, some of this tips will help trouble shoot any app running on Openshift) and something went wrong. <\/div>\n
\n<\/div>\n
First of all, have a look at the logs. Just issue <\/div>\n
\n
rhc app tail -a myapp -l mylogin@openshift.com -p mysecretpass\r\n<\/pre>\n<\/div>\n
Leave that window open, it will become quite handy later. <\/div>\n
\n<\/div>\n
Then we\u2019ll ssh into our remote machine. Just issue: <\/div>\n
\n
rhc app show -a myapp -l mylogin@openshift.com -p mysecretpass\r\n<\/pre>\n<\/div>\n
and you\u2019ll get something like   <\/div>\n
\n
Application Info\r\n================\r\ncontacts\r\n    Framework: diy-0.1\r\n     Creation: 2012-04-19T14:20:16-04:00\r\n         UUID: 0b542570e41b42e5ac2a255c316871bc\r\n      Git URL: ssh:\/\/0b542570e41b42e5ac2a255c316871bc@myapp-mylogin.rhcloud.com\/~\/git\/myapp.git\/\r\n   Public URL: http:\/\/myapp-mylogin.rhcloud.com\/\r\n\r\n Embedded: \r\n      None\r\n<\/pre>\n<\/div>\n
Take the part after the ssh of the Git URL stuff, and log into you openshift machine:        <\/div>\n
\n
ssh 96e487d1d4a042f8833efc696604f1e7@myapp-mylogin.rhcloud.com\r\n<\/pre>\n<\/div>\n
(If you are lazy like me, go on and vote for an easier way to ssh into openshift<\/a>) <\/div>\n
\n<\/div>\n
It\u2019s also a good idea to open another command window, ssh into openshift, and run something like \u201ctop\u201d or \u201cwatch -n 2 free -m\u201d to keep an eye on memory usage. <\/div>\n
\n<\/div>\n
Troubleshooting Play<\/strong><\/div>\n
 <\/strong>  <\/div>\n
You know the old motto, \u201cwrite once, run everywhere\u201d\u2026 well it just \u201cshould\u201d<\/strong> work, but just in case you could try compiling your app with the same JDK version as the one running on openshift. <\/div>\n
\n<\/div>\n
Just run <\/div>\n
\n
java -version\r\njava version \"1.6.0_22\"\r\nOpenJDK Runtime Environment (IcedTea6 1.10.6) (rhel-1.43.1.10.6.el6_2-i386)\r\nOpenJDK Server VM (build 20.0-b11, mixed mode)\r\n<\/pre>\n<\/div>\n
And install the same jdk version on your box. Then compile your app and redeploy (you can use the convenience script openshift_deploy<\/i>) <\/div>\n
\n<\/div>\n
If that doesn\u2019t work, try to do the whole process manually on Openshift. You should do something like this:   <\/div>\n
\n
# download play\r\ncd ${OPENSHIFT_DATA_DIR} \r\ncurl -o play-2.0.1.zip http:\/\/download.playframework.org\/releases\/play-2.0.1.zip\r\nunzip play-2.0.1.zip\r\ncd ${OPENSHIFT_REPO_DIR}\r\n\r\n#stop app\r\n.openshift\/action_hooks\/stop\r\n\r\n#clean everything - watch for errors, if it fails retry a couple more times\r\n${OPENSHIFT_DATA_DIR}play-2.0.1\/play clean \r\n<\/pre>\n<\/div>\n
if you get something like:   <\/div>\n
\n
\/var\/lib\/stickshift\/0b542570e41b42e5ac2a255c316871bc\/myapp\/data\/play-2.0.1\/framework\/build: line 11: 27439 Killed \r\n<\/pre>\n<\/div>\n
It means it failed miserably (that\u2019s the memory problem I told you about) <\/div>\n
\n<\/div>\n
And it\u2019s such a bad tempered error that you\u2019ll also loose you command prompt. Just blindily type \u201creset\u201d and hit enter, you\u2019ll get your prompt back. <\/div>\n
\n<\/div>\n
And then just try again\u2026 <\/div>\n
\n<\/div>\n
You might also get this message:  <\/div>\n
\n
This project uses Play 2.0!\r\nUpdate the Play sbt-plugin version to 2.0.1 (usually in project\/plugins.sbt)\r\n<\/pre>\n<\/div>\n
That means you created the app with Play 2.0 and you are now trying to compile it with a different version. <\/div>\n
\n<\/div>\n
Just update project\/plugins.sbt file or download the appropiate version. <\/div>\n
\n<\/div>\n
Now compile and stage your app.      <\/div>\n
\n
#compile everything - watch for errors, if it fails retry a couple more times\r\n${OPENSHIFT_DATA_DIR}play-2.0.1\/play compile\r\n\r\n#stage - watch for errors, if it fails retry a couple more times\r\n${OPENSHIFT_DATA_DIR}play-2.0.1\/play stage\r\n<\/pre>\n<\/div>\n
Then run it (don\u2019t be shy and have a look at the action hooks scripts on the quickstart repo<\/a>).  <\/div>\n
\n
target\/start -Dhttp.port=8080 -Dhttp.address=${OPENSHIFT_INTERNAL_IP} -Dconfig.resource=openshift.conf\r\n<\/pre>\n<\/div>\n
Go check it at https:\/\/myapp-mylogin.rhcloud.com <\/div>\n
\n<\/div>\n
If everything works ok, just stop it with ctrl-c, and then run:   <\/div>\n
\n
.openshift\/action_hooks\/start\r\n<\/pre>\n<\/div>\n
You should see your app starting in the console with the logs files <\/div>\n
\n<\/div>\n
Now you can log out from the ssh session with ctrl-d, and issue:      <\/div>\n
\n
rhc app restart -a myapp -l mylogin@openshift.com -p mysecretpass\r\n<\/pre>\n<\/div>\n
and you should see something like   <\/div>\n
\n
Stopping play application\r\nTrying to kill proccess, attempt number 1\r\nkill -SIGTERM 19128\r\n\/var\/lib\/stickshift\/0b542570e41b42e5ac2a255c316871bc\/openbafici\/repo\/target\/start \"-DapplyEvolutions.default=true\" -Dhttp.port=8080 -Dhttp.address=127.11.189.129 -Dconfig.resource=openshift.conf\r\nPlay server process ID is 21226\r\n[info] play - Application started (Prod)\r\n[info] play - Listening for HTTP on port 8080...\r\n<\/pre>\n<\/div>\n
\n<\/div>\n
I hope this tips will become useful. As I told, I\u2019m looking forward to start playing with the Openshift Origin livecd, and then I\u2019ll tell you about. <\/div>\n
\n<\/div>\n
In the meantime I\u2019ll leave you with the company of the good old Openshift Rocket Bear, I know you miss him too, so why not get him back<\/a>? <\/div>\n
\n<\/div>\n
\n<\/div>\n
Reference: <\/i><\/strong>Troubleshooting Play Framework 2 apps on Openshift<\/a> from our JCG partner<\/a> Sebastian Scarano at the Having fun with Play framework!<\/a> blog.<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
Troubleshooting Openshift   With the do-it-yourself application type you really get a lot of freedom to support almost any framework or server that can be built and run on a linux box. But you do have to make your homework, and do some research.  So in this article I\u2019ll show you a couple of tips …<\/p>\n","protected":false},"author":127,"featured_media":215,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[177,367],"class_list":["post-1277","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-enterprise-java","tag-play-framework","tag-redhat-openshift"],"yoast_head":"\nTroubleshooting Play Framework 2 apps on Openshift - Java Code Geeks<\/title>\n<meta name=\"description\" content=\"Troubleshooting Openshift   With the do-it-yourself application type you really get a lot of freedom to support almost any framework or server that\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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