https://wikitech.wikimedia.org/w/index.php?title=Server_Admin_Log&oldid=993285#2016-09-22 cherry-picked entries from around this date:
2016-09-22
07:33 elukey: rebooting stat1004 for kernel upgrades
07:40 moritzm: rolling restart of trusty swift frontend servers in codfw for kernel security update
07:52 elukey: rebooted stat100[23] for kernel upgrades
07:58 elukey: uploaded varnishkafka 1.0.12-1 to reprepro
08:35 elukey: restarted varnishkafka on cp1099 (log abandoned )
08:40 elukey: installed varnishkafka 1.0.12 on cp1099
08:43 elukey: installing varnishkafka 1.0.12 on cache:upload esams
09:02 elukey: installing varnishkafka 1.0.12 on cache:upload codfw
12:25 elukey: installing varnishkafka 1.0.12 on cache:upload ulsfo and eqiad
15:02 bblack: upgrading openssl on cp*
18:38 logmsgbot: aaron@tin Synchronized php-1.28.0-wmf.20/includes/libs/rdbms/database/Database.php: rMW844cfd568a7c & rMW014a420b4525 (duration: 00m 49s)
18:47 logmsgbot: thcipriani@tin Synchronized php-1.28.0-wmf.20/extensions/CentralNotice: SWAT: Update extensions/CentralNotice submodule (T144952) (duration: 00m 52s)
19:09 logmsgbot: thcipriani@tin rebuilt wikiversions.php and synchronized wikiversions files: group1 wikis to 1.28.0-wmf.20
20:08 logmsgbot: thcipriani@tin rebuilt wikiversions.php and synchronized wikiversions files: all wikis to 1.28.0-wmf.20
22:49 logmsgbot: aaron@tin Synchronized php-1.28.0-wmf.20/includes/libs/rdbms/loadbalancer/LoadBalancer.php: rMWa73a7ef92862 (duration: 01m 04s)
HTTP 5xx matches:
Total request count did not significantly change, so it's not probably not caused by overall traffic being higher, but rather something on our side.
