Commits on Oct 24, 2024

1. HA: Limit max open database connections to 1 …

   Previously, the HA feature was allowed to open `max_connections`
   database connection in parallel to other Icinga DB components. Meaning,
   Icinga DB wasn't limited to the configured `max_connections`, but
   effectively to `2 * max_connections`. Additionally, this masked a
   serious bug in the `HA#realize()` method, where we start a new
   transaction after each retry without rolling back in case of an error,
   leading to connections not being released before exceeding the ctx
   deadline.

   

   yhabteab committed Oct 24, 2024
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