Deprecated
Openshift v2.0 has now reached End of Life and will be replaced by v3.0.
I primarily use Openshift for Node and Ghost apps, but I can never remember all the necessary commands needed to manage the server. This list is pretty much all you need to get started.
Managing SSH
SSH into your specific Openshift gear
rhc ssh -a [name of app] --namespace [name of namespace]
If you SSH into your application, then these are the commands you will use instead of rhc.
gear control your application (start, stop, restart, etc.)
or deps with --cart (gear start --cart mysql-5.1)
tail_all tail all log files
export list available environment variables
rm remove files/directories
ls list files/directories
ps list running applications
kill kill running applications
mysql interactive MySQL shell
mongo interactive MongoDB shell
psql interactive PostgreSQL shell
quota list disk usage
Managing the Server
Start, stop or restart a cartridge
rhc cartridge restart [cartridge name] -a [name of app]
Reload the configuration without restarting your app
rhc app reload -a [name of app]
Restart the app
rhc app restart -a [name of app]
Force stop the app
rhc app force-stop -a [name of app]
View NodeJS console.log
rhc tail -a [name of app]
Manage scaling through HaProxy
This one is tricky but here's how to restart HaProxy
rhc cartridge-restart --cartridge haproxy -a [name of app]
Here's how to tweak something within the HaProxy config
rhc ssh -a [name of app] --namespace [name of namespace]
nano ~/haproxy/conf/haproxy.cfg
Managing Environmental Variables
View environmental variables
rhc env list -a [name of app] --namespace [name of namespace]
Create an Environmental Variable.
rhc env-set NODE_ENV=production --app [name of app]
Managing Filesystem
This diagram does an excellent job of explaining where files live. 90% of the time, you will be working with app-root.
Managing Storage
Calculating File Size
This will give you the 50 largest directories and files on the gear.
du -h * | sort -rh | head -50
Clean Up
Clean up the application’s logs, tmp directories, and even tidy up the git repo on the server:
rhc app-tidy -a main --namespace [name of namespace]
