Failed to connect to the database: SQLSTATE[HY000] [2002]

[dnutan (Marc)]

If nextcloud is working as expected but occasionally you get that message it coult be because of this:

@dnutan

So an explanation or sequence of events could be that:

1. mysqld service was stopped or restarting
2. then, the nextcloud cron job ran
3. cron.php failed to connect to mysql’s unix socket
4. cron job failed and mailed the error
5. after that, mysqld service was back online, no more errors and nextcloud still works