I have several CentOS virtual machines that I only fire up when I need
to test something, so I don't give them static IPs. For my own
convenience, I added the following lines in /etc/rc.local, which
get the IP Address that was leased to the machine by the DHCP server,
and change /etc/issue to display it:
{% highlight bash %} export IPADDR=$(ifconfig eth1 | grep 'inet ' | cut -d ':' -f 2 | cut -d ' ' -f 1) sed -i "s/IP Address:.*/IP Address: $IPADDR/" /etc/issue {% endhighlight %}
This way, once the VM boots up and gets an IP from DHCP, that IP will be displayed in the hypervisor's console.