vsphere HA warning

[mak14]

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

[scott28tt]

And what isolation address is your HA configuration set to use, and what troubleshooting have you already done?

[pashnal]

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 

[mak14]

Scott,

default configs, I haven't configured or added isolation address troubleshoot i tried re-configure HA, 

[mak14]

Hello Pashna,

We are not using ipv6 but all of sudden this warning popped out,

ipv4 is pingable and no warning so far.

 

[pashnal]

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 

[mak14]

Pashnal,

Host isolation is disabled,

[pashnal · Accepted solution]

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 

[mak14]

Pashnal,

After doing changes and re-enabling HA host isolation warning disappeared.

Thank you.