Fix Health Monitor JSON plugin + add error logging #2530
Merged
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The Health Monitor JSON plugin was silently failing with the following error:
This was due to a change in the async-io gem where neither async/io nor async/io/stream are automatically required anymore when the gem is installed.
In addition to adding the require, logging has been added when an internal Ruby exception occurs while running the custom JSON plugin scripts. This should make it easier to diagnose problems in the future. Logging has explicitly not been added when the custom plugin script returns a non-zero exit code, maintaining just the existing "Restarted process" log message..
Fixes #2528