Reinstalling the ESX host management agents and HA agents on ESXi

Khi host hiển thị disconnect/not respond trong vCenter Server nhưng vẫn có thể truy xuất trực tiếp tới host. Remove/Add host trong vcenter không có tác dụng

Reinstalling the ESX host management agents and HA agents on ESXi

1. Right-click on the ESXi host and click Disconnect. This disconnects the ESXi host from the vCenter Server Inventory.
2. Log in to ESXi Troubleshooting Mode. For more information, see Tech Support Mode for Emergency Support (1003677).
3. Uninstall the vpxa and aam components from the VMware ESXi host using these commands:
   /opt/vmware/uninstallers/VMware-vpxa-uninstall.sh
   
   /opt/vmware/uninstallers/VMware-aam-ha-uninstall.sh
   
   Note: Run the cat /etc/shadow command to verify if the vpxuser has been removed by the uninstall script. If the vpxuser has not been removed, run userdel vpxuser.
    
4. Right-click on the ESXi host and click Connect. This initiates a re-install of the vpxa agent. 
5. Add the host to the appropriate cluster. This initiates a re-install of the aam agent.

If the agent fails to automatically install when connecting the ESX host in the vCenter Server: Verify that /tmp/vmware-root exists on the ESX host. vCenter stages the vpxa RPM in this folder. To add this directory, execute:

mkdir -p /tmp/vmware-root

Nguồn: Verifying and reinstalling the correct version of the vCenter Server agents
http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1003714