[GitHub] [bookkeeper] rdhabalia opened a new issue, #3923: Add support to include the bookie sanity state in the bookie metrics.

["rdhabalia (via GitHub)" <gi...@apache.org>]

rdhabalia opened a new issue, #3923:
URL: https://github.com/apache/bookkeeper/issues/3923

   ### Motivation
   Right now, Bookie metrics (Prometheus) don't show if Bookie's sanity is passing or not. and with container-based Prometheus bookie metrics which are used for monitoring, it will be really useful if metrics also show the bookie sanity state so, Prometheus can automatically scrape the bookie sanity state and one can set up monitoring on it. 
   Therefore, add support to include the bookie sanity state in the bookie metrics.
   For example:
   ```
   URL: http://localhost:8000/metrics
   :
   # 1 shows bookie sanity is passing, 0 failed, -1 unknown
   bookie_SERVER_SANITY 1
   ```


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