Environment >
IBM Hardware X3690X5
SVC-VSP Storage
ESXi5.1u1 Source
ESXi5.5u1 Target
VCenter 5.1 U1 Source
VCenter 5.5 U1 Target
External applications hooking into VCenters are ESM Spectrum NEtbackup and vCOPS.
Guys we use a proven upgrade path where we Disconnect a PROD ESXi host from VCenter 5.1u1 , with its VMs on it , then Remove and it .
Then we add this host to VCenter 5.5u1 and accept the warming that it is being managed by another VCenter . Then use vMotion to upgrade the host while it is in VCenter 5.5 .
This works great for us . However , on our main production VCenter ( 5.1u1 ) we can General error occurred when removing the Host .
Screenshot attached of the Event .
KB articles above suggests you have to Enable Lockdown mode , and that will resolve your issue , this is not Working for us , when set using SSH .
I confirmed in VCenter 5.1 GUI that lockdown is indeed working
VCenter vpxd does not show much , only that there are SOAP queries being made against this host >
See Evict1.jpg attached .
Vmkernel log and HostD did no show me anything that looks like its related.
Any Ideas ?
I must mention that we have done all our DEV / TEST / DR datacentres successfully already using this method , using same versions of everything.
There is something unique to this VCenter and its hosts .