vMA or virtual management assistant provides a way to manage a ESX(i) host or vCenter server through the command line.

Remote commands are vicfg rather than esxcfg like on a local ESX host. Using vicfg allows you to manage ESXi hosts through the command line as direct console access is not available like on ESX.

vMA includes
vSphere SDK for Perl & for Java (although last time I checked this was still experimental)
vSphere API

When logging into the vMA use vi-admin user account.

Each command you run needs a command name (i.e. vicfg-nics), authentication parameters (i.e. ESX host username), which ESX(i) (vihost) to run the command and any other options for the command.

You can create a session file for secure password hashing. Using this creates access tokens.
Save_session.pl –sessionfile <sessionfile> –username <username> –server <vcenter_server> password:<password>

For access for up to half an hour, use
Vicfg-nics –sessionfile <sessionfile> –vihost <hostname> –list

Commands & Examples
vicfg-nics | Manage physical NICs
vicfg-vswitch | Manage virtual switches
vicfg-vmknic | VMkernel NIC
vicfg-dns | Specify DNS configuration
vicfg-route | Manage default IP gateway
Vicfg-ntp | Specify NTP server

-a Set the NIC to auto negotiate
-d half¦full Duplex options
-s <val> Speed for NIC (val is 10,100,1000,10000)
-l Lists the NICS
-L Link
-A Add
-D Delete a port group
-d Delete a virtual switch
-U Remove an uplink from a vSwitch (unlink)
-Q Remove an uplink from a dvSwitch
-IP Assign IP address
-m Set MTU
-n Set netmask

Create a virtual switch
vicfg-vswitch <comm-params> -a <vswitch name>

Add a port group to a virtual switch
vicfg-vswitch <comm-params> -A <portgroup> <vSwitch_name>

Link an uplink to a virtual switch
vicfg-vswitch –L <vmnic> <vswitch_name>

Link an uplink to a distributed vSwitch
vicfg-vswitch –P <vmnic> -v <dvport> <dvswitch_name>

Set Max MTU size
vicfg-vswitch <comm-params> -m 9000 <vSwitch_name>

vicfg-vswitch –v <VLAN_ID> -P <portgroup> <vSwitch_name>

Remove a VLAN ID
vicfg-vswitch <comm-params> -v 0 –P <portgroup> <vSwitch_name>

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