Attempted to resurrect connection to dead ES instance, but got an error

Thanks for sharing @snalaband. I don't see anything obviously wrong from your configuration. As @warkolm says some more information on your issue in addition to the error would be useful.

Can you give us some more details such as Elasticsearch and Logstash versions and background for resurrecting the dead instance as per the tips and tricks we have for asking questions to the community that are shared above.