Inquiry for Elasticsearch connection issues

Hi, @all
An Elasticsearch execute 500 error occurred and the system was restarted. However, after the restart, the Elasticsearch, gray log server service is activated, but the web interface is not opened.
I’d appreciate your help.

**WARN [ProxiedResource] Unable to call on node <f536b2d7-cff8-43c0-b9c6-a40039e74069>**
**ERROR [AnyExceptionClassMapper] Unhandled exception in REST resource**
** timeout**
**2022-04-21T19:42:14.330+09:00 ERROR [Cluster] Couldn't read cluster health for indices [graylog_*] (Could not connect to**
**2022-04-21T19:42:14.330+09:00 INFO [IndexerClusterCheckerThread] Indexer not fully initialized yet. Skipping periodic cluster check.**
**2022-04-21T19:42:14.451+09:00 WARN [V20161130141500_DefaultStreamRecalcIndexRanges] Interrupted or timed out waiting for Elasticsearch cluster, checking again.**

Hello @JaeiL

You did not need to make another post.

Your issue is the same. It a configuration issue.

when post a question ,please look here to understand what s needed. Thank you

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