Dates in UTC:
19:32 <icinga-wm> PROBLEM - Host cp2017 is DOWN: PING CRITICAL - Packet loss = 100% 19:36 <icinga-wm> PROBLEM - IPsec on cp3049 is CRITICAL: Strongswan CRITICAL - ok: 52 connecting: cp2017_v4, cp2017_v6 19:36 <icinga-wm> PROBLEM - IPsec on cp4014 is CRITICAL: Strongswan CRITICAL - ok: 52 connecting: cp2017_v4, cp2017_v6 [..]
After a powercycle the host came up (frozen in the console too), but I preferred to depool it (sudo -i depool from cp2017) for a quick investigation. Once back it was serving traffic correctly as far as I could see.