Apache Karaf in OpenShift

[Martin Zukal via user]

Hi everyone
Does anybody run Apache Karaf on OpenShift? I set up developer sandbox with Red 
Hat and tried to run Apache Karaf (version 4.4.4) from the docker hub registry 
but it fails to start. I can see the following error(s) in the log file:
karaf: Ignoring predefined value for KARAF_HOME
mkdir: cannot create directory '/opt/apache-karaf/data/log': Permission denied
WARN: can't update etc/config.properties with the generated command shutdown. 
We advise to manually add the karaf.shutdown.command property.
java.io.FileNotFoundException: /opt/apache-karaf-4.4.4/karaf.pid (Permission 
denied)
                at java.base/java.io.FileOutputStream.open0(Native Method)
                at java.base/java.io.FileOutputStream.open(Unknown Source)
                at java.base/java.io.FileOutputStream.<init>(Unknown Source)
                at java.base/java.io.FileOutputStream.<init>(Unknown Source)
                at 
org.apache.karaf.main.InstanceHelper.writePid(InstanceHelper.java:126)
                at org.apache.karaf.main.Main.launch(Main.java:278)
                at org.apache.karaf.main.Main.main(Main.java:183)
java.lang.RuntimeException: /opt/apache-karaf-4.4.4/data/log/karaf.log (No such 
file or directory)
                at 
org.apache.karaf.main.util.BootstrapLogManager.getDefaultHandlerInternal(BootstrapLogManager.java:102)
                at 
org.apache.karaf.main.util.BootstrapLogManager.getDefaultHandlersInternal(BootstrapLogManager.java:137)
                at 
org.apache.karaf.main.util.BootstrapLogManager.getDefaultHandlers(BootstrapLogManager.java:70)
                at 
org.apache.karaf.main.util.BootstrapLogManager.configureLogger(BootstrapLogManager.java:75)
                at org.apache.karaf.main.Main.launch(Main.java:279)
                at org.apache.karaf.main.Main.main(Main.java:183)
Caused by: java.io.FileNotFoundException: 
/opt/apache-karaf-4.4.4/data/log/karaf.log (No such file or directory)
                at java.base/java.io.FileOutputStream.open0(Native Method)
                at java.base/java.io.FileOutputStream.open(Unknown Source)
                at java.base/java.io.FileOutputStream.<init>(Unknown Source)
                at 
org.apache.karaf.main.util.BootstrapLogManager$SimpleFileHandler.open(BootstrapLogManager.java:193)
                at 
org.apache.karaf.main.util.BootstrapLogManager$SimpleFileHandler.<init>(BootstrapLogManager.java:182)
                at 
org.apache.karaf.main.util.BootstrapLogManager.getDefaultHandlerInternal(BootstrapLogManager.java:100)
                ... 5 more
Error creating bundle cache.
Unable to update instance pid: Unable to create directory 
/opt/apache-karaf-4.4.4/instances

Is there some documentation about running on OpenShift? I have no problem to 
build the image by myself but right now I have no idea what is wrong or what is 
missing.
Any help will be highly appreciated!
Best regards
Martin Zukal

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