Recently we got into the issue where I have to change the ESXi host root password which was managed by the vCloud Director.
Changing the root password directly from the ESXi host is not recommended when the ESXi host is managed by vCloud Director. All operation task need to be accomplish through vCD.
NOTE: The test was
done on both the ESXi hosts in maintenance mode from VCD and with taking them
in to maintenance mode. Since you are performing the ESXi root password change
I would suggest to perform during maintenance mode.
Steps performed to change the root password of the ESXi host.
Step 1) Enable or
Disable an ESX/ESXi Host:
You can disable a
host to prevent vApps from starting up on the host. Virtual machines that are
already running on the host are not affected.
- To perform
maintenance on a host, migrate all vApps off of the host or stop all vApps and
then disable the host.
Procedure:
1. Click the Manage
& Monitor tab and click Hosts in the left pane.
2. Right-click the
host name and select Enable Host or Disable Host.
vCloud Director
enables or disables the host for all provider virtual datacenters that use its
resources.
Step 2) Move Virtual
Machines from one ESX/ESXi Host to Another
You can move all the
virtual machines from one ESX/ESXi host to other hosts in the same cluster.
This ability is useful to unprepare a host, or to perform maintenance on a host
without affecting running virtual machines.
Prerequisites:
Disable the host (As
mentioned in Step 1)
Procedure:
1. Click the
Manage & Monitor tab and click Hosts in the left pane.
2. Right-click the
host name and select Redeploy all VMs.
3. Click Yes.
vCloud Director puts
the host into maintenance mode and moves all of its virtual machines to other
hosts in the same cluster.
Step 3) Change the
root password of the corresponding ESXi host.
Step 4) Prepare the
host and then enable the host back in VCD environment.
If you notice any
HOST which has issue with the agent communication (As observed during our
test), please repair the appropriate HOST:
Repair a Provider
Virtual Datacenter ESX/ESXi Host:
Procedure:
1. Click the Manage
& Monitor tab and click Provider VDCs in the left pane.
2. Right-click the
provider virtual datacenter name and select Open.
3. Click the Hosts
tab.
4. Right-click the
host name and select Repair Host.
NOTE: vCloud
Director repairs the host. This operation affects all provider virtual
datacenters that use the host.
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