andrijapanicsb commented on issue #3550: VR Loses Instance IP Address URL: https://github.com/apache/cloudstack/issues/3550#issuecomment-533520880 Can you guys perhaps make a correlation with the out-of-band live migration (vSphere, DRS, XenServer,etc. - i.e. that ACS is not aware of) - and if this triggers the thing. We are observing specific situation which seems related to DRS doing the out of band migration, then that VM's power off report is sent back to ACS, so it immediately removes it's DNS/DHCP (new in 4.11.3, to clean the garbage - it's bit complicated to explain atm) - but later ACS gets another power on report - so doesn't issue specifically an internal "Stop" command - and VM remains happily running, but it's DNS/DHCP records are gone... We are planning some changes in the logic, i.e. wipe DNS/DHCP only when the VM is expunged, not when it's stopped etc. But I would be happy if you can make a correlation of your to mine situation/root cause.
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