Change 588831 had a related patch set uploaded (by Marostegui; owner: Marostegui):
[operations/puppet@production] mariadb: Move db1114 to s8

https://gerrit.wikimedia.org/r/588831

Change 588831 merged by Marostegui:
[operations/puppet@production] mariadb: Move db1114 to s8

https://gerrit.wikimedia.org/r/588831

Change 588832 had a related patch set uploaded (by Marostegui; owner: Marostegui):
[operations/puppet@production] install_server: Allow reimage db1114

https://gerrit.wikimedia.org/r/588832

Mentioned in SAL (#wikimedia-operations) [2020-04-15T05:07:29Z] <marostegui> Remove db1114 from tendril - T250224

Change 588832 merged by Marostegui:
[operations/puppet@production] install_server: Allow reimage db1114

https://gerrit.wikimedia.org/r/588832

Script wmf-auto-reimage was launched by marostegui on cumin1001.eqiad.wmnet for hosts:

['db1114.eqiad.wmnet']

The log can be found in /var/log/wmf-auto-reimage/202004150514_marostegui_23354.log.

Mentioned in SAL (#wikimedia-operations) [2020-04-15T05:21:24Z] <marostegui> Remove db1114 from tendril and zarcillo T250224

Completed auto-reimage of hosts:

['db1114.eqiad.wmnet']

and were ALL successful.

I am populating this host from s8's snapshot from yesterday (600GB) already transferred.

Change 588949 had a related patch set uploaded (by Marostegui; owner: Marostegui):
[operations/puppet@production] db1114: Enable notifications

https://gerrit.wikimedia.org/r/588949

Change 588949 merged by Marostegui:
[operations/puppet@production] db1114: Enable notifications

https://gerrit.wikimedia.org/r/588949

Mentioned in SAL (#wikimedia-operations) [2020-04-15T08:14:21Z] <marostegui@cumin1001> dbctl commit (dc=all): 'Pool db1114 on s8 with low weight T250224', diff saved to https://phabricator.wikimedia.org/P10985 and previous config saved to /var/cache/conftool/dbconfig/20200415-081421-marostegui.json

Mentioned in SAL (#wikimedia-operations) [2020-04-15T08:54:33Z] <kormat@cumin1001> dbctl commit (dc=all): 'Increase db1114's weight T250224', diff saved to https://phabricator.wikimedia.org/P10986 and previous config saved to /var/cache/conftool/dbconfig/20200415-085432-kormat.json

db1114 added to the Wikidata CPU dashboard

Mentioned in SAL (#wikimedia-operations) [2020-04-15T09:43:05Z] <kormat@cumin1001> dbctl commit (dc=all): 'Increase db1114's weight some more T250224', diff saved to https://phabricator.wikimedia.org/P10988 and previous config saved to /var/cache/conftool/dbconfig/20200415-094305-kormat.json

Mentioned in SAL (#wikimedia-operations) [2020-04-15T12:49:31Z] <kormat@cumin1001> dbctl commit (dc=all): 'Increase db1114's weight to 50% of target T250224', diff saved to https://phabricator.wikimedia.org/P10989 and previous config saved to /var/cache/conftool/dbconfig/20200415-124931-kormat.json

Mentioned in SAL (#wikimedia-operations) [2020-04-15T13:23:12Z] <kormat@cumin1001> dbctl commit (dc=all): 'Increase db1114's weight to 100% of target, and reduce db1104 slightly T250224', diff saved to https://phabricator.wikimedia.org/P10990 and previous config saved to /var/cache/conftool/dbconfig/20200415-132310-kormat.json

Thank you so much for the help!
This should help s8 indeed. I expect also to repool db1092 tomorrow once the ALTERs are done.
Later today I will also decrease the weight for the RC slaves, which we increased yesterday night to help out in main traffic.