Public bug reported:

[Impact]

 * Rabbitmq-server has 2 configuration settings that affect how long it will 
wait for the mnesia database to become available
 * The default is 30 seconds x 10 retries = 300 seconds
 * The startup wrapper rabbitmq-server-wait will wait only 10 seconds
 * If the database does not come online within 10 seconds the startup script 
will fail despite the fact that rabbitmq-server is still waiting for another 
290 seconds.
 * This behavior leads to falsely identified failures in OpenStack for example 
when a Rabbitmq cluster is restarted out of order (LP: #1828988)

[Test Case]

 * Create Rabbitmq cluster and create a queue with "ha-mode: all" policy
 * Shut down nodes one by one
 * Restart the node that was shut down first
 * This node will fail to start because it was not the master of the queue
 * Note that the startup script (SysV or systemd) will fail after 10 seconds 
while the rabbitmq-server process is still waiting for the database to come 
online

[Regression Potential]

 * I am not aware of any potential regressions

** Affects: charm-rabbitmq-server
     Importance: Undecided
     Assignee: Nicolas Bock (nicolasbock)
         Status: New

** Affects: rabbitmq-server (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: rabbitmq-server (Ubuntu Bionic)
     Importance: Undecided
         Status: New

** Affects: rabbitmq-server (Ubuntu Disco)
     Importance: Undecided
         Status: New

** Affects: rabbitmq-server (Ubuntu Eoan)
     Importance: Undecided
         Status: New

** Affects: rabbitmq-server (Ubuntu Focal)
     Importance: Undecided
         Status: New

** Changed in: charm-rabbitmq-server
     Assignee: (unassigned) => Nicolas Bock (nicolasbock)

** Also affects: rabbitmq-server (Ubuntu)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1870619

Title:
  rabbitmq-server startup does not wait long enough

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