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Answer» Below STEPS are taken from my blog POSTS troubleshooting HA:
- Check for some network issues
- Check the DNS is configured properly
- Check the vmware HA AGENT status in ESX host by using below commands SERVICE vmware–aam status
- Check the networks are properly configured and named exactly as other hosts in the cluster. Otherwise, you will get the below errors while installing or reconfiguring HA agent.
- Check HA related ports are OPEN in firewall to allow for the communication
- Incoming port: TCP/UDP 8042-8045
- Outgoing port: TCP/UDP 2050-2250
- First try to restart /stop/start the vmware HA agent on the affected host using the below commands. In addition u can also try to restart vpxa and management agent in the Host.
- service vmware–aam restart
- service vmware–aam stop
- service vmware–aam start
- Right Click the affected host and click on “Reconfigure for VMWare HA” to re-install the HA agent that particular host.
- Remove the affected host from the cluster. Removing ESX host from the cluster will not be allowed untill that host is put into maintenance mode.
- Alternative solution for 3 step is, Goto cluster settings and uncheck the vmware HA in to turnoff the HA in that cluster and re-enable the vmware HA to get the agent installed.
- For further troubleshooting , review the HA logs under /Var/log/vmware/aam directory.
Below steps are taken from my blog posts troubleshooting HA:
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