VMWare - Changing the Management IP of your ESX host

It may become necessary at some point to change the management IP of your VMware /  ESX server which  is refered to as the service console. To do this it requires two basic commands from the ESX console.

First you must delete the existing vswif0 with the following command:

esxcfg-vswif -d vswif0

ignore the message "nothing to flush"

Then enter the following command to configure the new IP address, using your own IP.

esxcfg-vswif -a vswif0 -p Service\ Console -i 172.16.1.1 255.255.255.0 -b 172.16.1.255

Thats it!

Sending ESX logs to a syslog server

ESX servers:

Connect to your ESX server, log in as root.

Edit /etc/syslog.conf.

Add the following line to the bottom of the file. This will forward all the logs to your Splunk server.

*.* @splunksvr.mydomain

Restart the syslog service:

service syslog restart

Open the local firewall to allow UDP over port 514:

esxcfg-firewall -o 514,udp,out,syslog

Reload the firewall configuration:

esxcfg-firewall -l

If you want to capture information from the /var/log/vmware/hostd.log do the following:

SSH over to your ESX server. You will need sudo or root access to complete the following.

Edit /etc/vmware/hostd/config.xml with your favorite editor and change it to look like the following:

     <log>

     <directory>/var/log/vmware/</directory>

     <name>hostd</name>

     <outputToConsole>true</outputToConsole>

     <level>info</level>

     </log>

Restart the ESX Management Agents:

service mgmt-vmware restart

ESXi servers:

The process is much simpler simply run the following:

vicfg-syslog --server esxhostsvr.mydomain.com -s splunksvr.mydomain.com -p 514

Or

Using the Vcenter console go to the advanced options under the “configuration” tab and look for the “syslog” option. I may post screenshots later if I have the time.

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