I received MySQL has gone away notification from my alerting system out of nowhere while there is no serious load on my server. When I checked logs I see there was a shutdown signal sent. How is this possible, can this happen because of some maintenance.
2021-05-13T06:48:09.762481Z 7 [System] [MY-013172] [Server] Received SHUTDOWN from user boot. Shutting down mysqld (Version: 8.0.25-0ubuntu0.20.04.1).
2021-05-13T06:47:35.318280Z 0 [System] [MY-013172] [Server] Received SHUTDOWN from user <via user signal>. Shutting down mysqld (Version: 8.0. 23-0ubuntu0.20.04.1)
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