Hi today on irc we got this icinga warnnings

[13:57:01] <icinga-wm> PROBLEM - Check for gridmaster host resolution TCP on labs-ns1.wikimedia.org is CRITICAL: CRITICAL - Plugin timed out while executing system call
[13:58:51] <icinga-wm> PROBLEM - Check for gridmaster host resolution TCP on labs-ns0.wikimedia.org is CRITICAL: CRITICAL - Plugin timed out while executing system call

soon after i got these errors

[14:12:23] <icinga2-wm> PROBLEM - Host ores-worker-06 is DOWN: check_ping: Invalid hostname/address - ores-worker-06.ores.eqiad.wmflabsUsage:check_ping -H <host_address> -w <wrta>,<wpl>% -c <crta>,<cpl>% [-p packets] [-t timeout] [-4
[14:12:34] <icinga2-wm> PROBLEM - puppet on ores-worker-10 is WARNING: Could not resolve hostname ores-worker-10.ores.eqiad.wmflabs: Name or service not known
[14:12:44] <icinga2-wm> PROBLEM - check users on ores-worker-10 is WARNING: Could not resolve hostname ores-worker-10.ores.eqiad.wmflabs: Name or service not known