Hello,
Recently, a warning message appeared on all of my ESXi hosts.
warning - vSphere HA agent on this host could not reach isolation address: fe80::1
Hi ,
Looks like you have the default value set for the isolation address , Please follow the below steps will will disable the isolation alert .
In the vSphere Client select the HA cluster. Click the Summary tab then Edit Settings -> select VMware HA and click Advanced Options ->
Enter the following values:
Option: das.isolationaddress0
Value: Blank
Option: das.usedefaultisolationaddress
Value: false
Click OK -> OK -> then Edit Settings of the cluster again -> Disable HA -> click OK -> Edit Settings again -> Enable HA -> Click OK.
If you think your queries have been answered
Mark this response as "Solution Provided" "Correct" or "Helpful".
Thanks
Pashnal
And what isolation address is your HA configuration set to use, and what troubleshooting have you already done?
Hi Mak14,
Looks like your host isolation IP was not reachable ,Are you using IPv6 in your environment and what is the isolation address set for the HA Cluster , Please refer the screensthot below
If that is set correctly then then your network team can help you check why that IP was not pingable during that period .
If you think your queries have been answered
Mark this response as "Solution Provided" "Correct" or "Helpful".
Thanks ,
Pashnal
Scott,
default configs, I haven't configured or added isolation address troubleshoot i tried re-configure HA,
Hello Pashna,
We are not using ipv6 but all of sudden this warning popped out,
ipv4 is pingable and no warning so far.
Hi Mak14 ,
Check what is the HA Setting on the cluster for Host isolation . Select Cluster > Configure > vSphere HA > Click on Edit for vSphere HA
Click on Response for Host Isolation >
1. If its disabled and you still got an alert , the disable and enable HA on the cluster will clear and stale settings .
2, If its enabled then check what is the IP set for the host isolation address in advance settings
Thanks ,
Pashnal
Pashnal,
Host isolation is disabled,
Hi ,
Looks like you have the default value set for the isolation address , Please follow the below steps will will disable the isolation alert .
In the vSphere Client select the HA cluster. Click the Summary tab then Edit Settings -> select VMware HA and click Advanced Options ->
Enter the following values:
Option: das.isolationaddress0
Value: Blank
Option: das.usedefaultisolationaddress
Value: false
Click OK -> OK -> then Edit Settings of the cluster again -> Disable HA -> click OK -> Edit Settings again -> Enable HA -> Click OK.
If you think your queries have been answered
Mark this response as "Solution Provided" "Correct" or "Helpful".
Thanks
Pashnal
Pashnal,
After doing changes and re-enabling HA host isolation warning disappeared.
Thank you.