Cant deploy if hazelcast.loggingLevel set

[andrey-gava]

hazelcast.loggingLevel=DEBUG

Error within pod:
sed: can't create temp file 'logging.propertiesXXXXXX': Read-only file system

Its related to securityContext.readOnlyRootFilesystem that set by default to true.

[leszko]

Which Helm Chart / Docker image do you use? I guess it should not be an issue with the latest one.

[andrey-gava]

Which Helm Chart / Docker image do you use? I guess it should not be an issue with the latest one.

Chart 3.6.2
Docker image 4.0.2

[leszko]

I checked the latest version and it worked for me.

helm install hz --set hazelcast.loggingLevel=DEBUG hazelcast/hazelcast

If it doesn't work, then it may be related to your k8 environment. You can also try setting the security context like this.

helm install hz --set hazelcast.loggingLevel=DEBUG --set securityContext.readOnlyRootFilesystem.false hazelcast/hazelcast

[shahamit]

@leszko - none of the above commands worked. The hazelcast instance fails to start with a ClassNotFoundException

Ideally it should have worked with the loggingLevel property because the values.yaml file also states so but strange that it doesn't worked. Any solutions?

The complete k8s logs are as below

########################################
# JAVA=/usr/bin/java
# JAVA_OPTS=--add-modules java.se --add-exports java.base/jdk.internal.ref=ALL-UNNAMED --add-opens java.base/java.lang=ALL-UNNAMED --add-opens java.base/sun.nio.ch=ALL-UNNAMED --add-opens java.management/sun.management=ALL-UNNAMED --add-opens jdk.management/com.sun.management.internal=ALL-UNNAMED -Dhazelcast.logging.type=log4j2 -Dlog4j.configurationFile=file:/opt/hazelcast/config/log4j2.properties -Dhazelcast.config=/opt/hazelcast/config/hazelcast-docker.xml -Djet.custom.lib.dir=/opt/hazelcast/custom-lib -Djava.net.preferIPv4Stack=true -XX:MaxRAMPercentage=80.0 -XX:MaxGCPauseMillis=5 -Dhazelcast.config=/data/hazelcast/hazelcast.yaml -DserviceName=hazelcast -Dnamespace=default -Dhz.jet.enabled=true -Dhazelcast.shutdownhook.policy=GRACEFUL -Dhazelcast.shutdownhook.enabled=true -Dhazelcast.graceful.shutdown.max.wait=600 map[loggingLevel:DEBUG]
# CLASSPATH=/opt/hazelcast/*:/opt/hazelcast/lib:/opt/hazelcast/lib/*:/opt/hazelcast/bin/user-lib:/opt/hazelcast/bin/user-lib/*
########################################
Error: Could not find or load main class map[loggingLevel:DEBUG]
Caused by: java.lang.ClassNotFoundException: map[loggingLevel:DEBUG]

[shahamit]

Finally defining an environment variable named LOGGING_LEVEL in the values file worked.

[hasancelik]

Hi @shahamit,

Finally defining an environment variable named LOGGING_LEVEL in the values file worked.

In a functional level, hazelcast.loggingLevel does the same thing actually:

https://github.com/hazelcast/charts/blob/master/stable/hazelcast/templates/statefulset.yaml#L160

I have also tested with the latest version, and it worked:

helm install hz --set hazelcast.loggingLevel=DEBUG hazelcast/hazelcast

Could you share your chart version and values.yaml?