JBoss / WildFly - java.lang.OutOfMemoryError: Metaspace error

In recent days, I observed WildFly server is giving an error 

java.lang.OutOfMemoryError: Metaspace error

and the server terminates OR stops serving your requests.

This was happening when I redeploy an application of keep the server on for certain time.

I did little research and found that we need to tweak the configuration of JBoss / WildFly server to increase meta space. Do not increase it too much as we need to maintain balance between meta space and heap.

To do that open [WildFly / JBoss home]/bin/standalone.conf

 

Search for -XX:MaxMetaspaceSize

 

There you would find -XX:MaxMetaspaceSize=256m

Change it to -XX:MaxMetaspaceSize=512m 

 

It looks something like this

Restart the server and you are done.