Command action fails with message "java.io.IOException: Cannot run program "sh": java.io.IOException: error=12, Cannot allocate memory)" (4258113)

We set up a command action from a rule to run on our Linux Foglight Mangement Server (FMS). The Command action only runs after the FMS has been restarted.   After about a day the following error message is reported in the Management Server log when a command action is attempted:

java.io.IOException: Cannot run program "sh": java.io.IOException: error=12, Cannot allocate memory).

The FMS host is low on swap space.

SOLUTION:

Check the swap space configuration and increase the swap space if it is low.

The "free -m" and "swapon -s" commands can be used to gather information on the swap space on a linux host.