Nagios Support Forum

Hello,
I just installed the nagios XI vmware machine and it has the networking set to bridged. When it starts up the splash screen shows ip address blank and when I run ifconfig it shows a blank ipv4 entry for eth0. I just uninstalled the last version of the virtual machine for nagios and installed XI and the previous version worked fine. Any ideas why I am not getting and ip assigned to this virtual machine?? When I try to restart the network it fails on trying to obtain IP address for eth0, the previous version of the VM for nagios worked fine. Any help or suggestions appreciated.

P.S. I went back to the previous VM of nagios and now I notice that I am getting and error stating it has detected a duplicate IPv6 address and now that network doesn't start anymore. Somehow the IPv6 address seems to have gotten registered somewhere and this may be the cause.


ETH0: IPv6 duplicate address fe80::20cfec7:b51 detected!

When the networking is set to bridged it is putting the virtual NIC into the same physical network segment as the computer running the VM. If there is another VM with the same MAC address on this physical network segment then that could be causing the problem. You will need to change the MAC address of the virtual NIC on this VM to resolve the problem.

What do you mean by the previous VM of Nagios?

I had the virtual machine for nagios log server 2015r1.2 installed(worked fine) and I removed it and installed nagios XI VM and go the error even got the error when I put the log server VM back. When I uninstalled vmware and reinstalled it and then used the VM for the log server again it worked until I reinstalled the XI VM and then both failed. Somehow once one is installed it works until the other is installed and started. I never run both VM's at the same time but this seems to be the cause. I am new to running nagios in a VM but I decided to try XI out after trying the log server VM.

Sounds like both VM's have the same MAC address.

Open VMware Workstation or Player.
Make sure the VM is powered off
Select the XI VM and edit the Settings
Select the NIC and remove it
Click Save
Edit the Settings of the VM again
Click Add
Add a Network adapter
Click Save

Next you'll need to power on the VM and re-configure the VM with a static IP Address again.