Disabling SSH configuration issues warning on the Summary tab in ESX/ESXi 4.1 and 5.0

Symptoms

After enabling SSH or ESXi Shell access on an ESX/ESXi 4.1 and 5.0 host, the vSphere Client Summary tab displays warnings indicating that there are configuration issues.

• You may see messages such as:

ESXi shell for the host has been enabled

SSH for the host has been enabled

Cause

These warnings indicate that settings have been enabled or that settings may require configuration on the ESXi console.

Resolution

To suppress informational warnings related to SSH and ESXi shell access:

1. Select the ESXi host in the Inventory.
2. Click the Configuration tab.
3. Under Software, click Advanced Settings.
4. Click UserVars.
5. Change the value of UserVars.SuppressShellWarning to 1.
6. Click OK.

Sources:-
http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2007922

Network redundancy message when configuring VMware High Availability in vCenter Server

Symptoms

When configuring the VMware High Availability (HA) in a vCenter Server, you see the message:
Host <xxx> currently has no management network redundancy.

Resolution

To suppress this message on ESX/ESXi hosts in the VMware High Availability (HA) cluster, or if the warning appears for a host already configured in a cluster, set the VMware HA advanced option das.ignoreRedundantNetWarning to true and reconfigure VMware HA on that host. This advanced option is available in VMware Virtual Center 2.5 Update 3 and later.

Note: If the warning continues to appear, disable and re-enable VMware High Availability in the cluster.

To set das.ignoreRedundantNetWarning to true:

1. From VMware Infrastructure Client, right-click on the cluster and click Edit Settings.
2. Select VMware HA and click Advanced Options.
3. In the Options column, enter das.ignoreRedundantNetWarning
4. In the Value column, enter true.
   
   Note: Steps 3 and 4 create a new option.
5. Click OK.
6. Reconfigure HA.

Sources VMware KB Article
http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1004700

Changing IP Address or Hostname of vMA

Once you login to vMA using vi-admin

After that  Change the working directory to /opt/vmware/vma/bin/

$ cd /opt/vmware/vma/bin/

Run the vmware-vma-netconf.pl script:

$ sudo ./vmware-vma-netconf.pl

this will ask password enter you passowrd then this will start the same process once again as it ask first time when your start your vMA machine.