dba1093 went down today:
19:24 <+icinga-wm> PROBLEM - Host db1093 is DOWN: PING CRITICAL - Packet loss = 100%
later it came back up:
21:44 <+icinga-wm> RECOVERY - Host db1093 is UP: PING OK - Packet loss = 0%, RTA = 0.31 ms
at this point we got paged about it because
21:46 <+icinga-wm> PROBLEM - mysqld processes on db1093 is CRITICAL: PROCS CRITICAL: 0 processes with command name mysqld https://wikitech.wikimedia.org/wiki/MariaDB/troubleshooting
We figured that it's normal and as desired that mysql does not come up after reboots.. but that we are still supposed to depool it.
Followed the docs at https://wikitech.wikimedia.org/wiki/MariaDB/troubleshooting#Depooling_a_slave
and made: https://gerrit.wikimedia.org/r/c/operations/mediawiki-config/+/507237
which tgr kindly deployed
```
```
CRITICAL: Slot 1: OK: 1I:1:1, 1I:1:2, 1I:1:3, 1I:1:4, 1I:1:5, 1I:1:6, 1I:1:7, 1I:1:8, 2I:2:1, 2I:2:2 - Controller: OK - Battery count: 0
```