I encontered an strange error, when i try to power on a VM (or change VM configuration) through a vCenter the error message appears :An error occured while communicating with remote host
ESXi host disconnect immediately (5-10 sec) after clicking PowerOn button. All VMs are work fine, only ESXi host disconnect from vCenter.
I try change config.vpxd.heartbeat.notrespondingtimeout=120.
But the problem still remains.
I had the same happen in vSphere 5.5 and 6.5.
I have meet this error every power up VM.
The vpxd.log is empty.
ESXi configuration file config.xml had some syntax error.
If it is happening to disconnect the ESXi hosts for 5.5 and 6.5, then I would strongly advise to check the port 902 UDP if it is open between ESXi and vCenter. port 902 UDP is used for heartbeat. If the heartbeat is missed or not received within the time (Default of 60 seconds, which you changed to 120 with the advanced parameter), the ESXi will be marked not responding.
- MS
Tankyou msripada !
ESXi host disconnect immediately (msx 5-10 sec, not 60, not 120 sec) after clicking PowerOn button.
I have several ESXi server, but problem only at one - 172.16.37.179.
172.16.37.179 ESXi 6.5 disconnect when VM Power UP.
172.16.37.100 ESXi 5.5 work fine
172.16.37.127 ESXi 5.5 work fine
172.16.37.177 ESXi 5.5 work fine
172.16.37.179 ESXi 6.5 work fine
172.16.37.210 ESXi 6.5 work fine
172.16.37.209 vCenter 6.5
Result nmap -sU -sV -p 904 -PU 172.16.37.XXX :
172.16.37.179 ESXi 6.5 disconnect
PORT STATE SERVICE
904/udp open|filtered unknown
172.16.37.100 ESXi 5.5 work fine
PORT STATE SERVICE
904/udp closed unknown
172.16.37.127 ESXi 5.5 work fine
PORT STATE SERVICE
904/udp open|filtered unknown
172.16.37.177 ESXi 5.5 work fine
PORT STATE SERVICE
904/udp closed unknown
172.16.37.210 ESXi 6.5 work fine
PORT STATE SERVICE
904/udp open|filtered unknown
172.16.37.209 vCenter 6.5
PORT STATE SERVICE
904/udp open|filtered unknown
Hi,
Please follow the below steps and check.
=> Power ON ESXi and navigate to advanced settings and change the below tow:
Regards,
Thankyou!
vnuma and reconnect
sorry how is that related?
ESXi configuration file config.xml had some syntax error.