Feng Li's picture

Hello, Team


I am new to Turnkey products. I hope to use Observium appliance to monitor my network.

Here I have a few questions for Observium appliance:

1)I plan to deploy Observium appliance on VMware EXSi host.  How many CPU cores, memory and Hard drive are allocated by this Turnkey Observium appliance ?

2)Can I adjust the allocated resource for CPU Cores, Memory size and Hard drive ?


Feng Li


Jeremy Davis's picture

If you install from the OVA (or the legacy VMX config file within the VMDK bundle) then the VM will have 1 vCPU, 512MB RAM and 20GB root virtual disk. If you just import the VMDK disk image (from the VMDK zip file) then again you get a 20GB root virtual disk but can configure your own vCPUs & RAM. If you install via ISO, then you can define everything yourself.

Please note that in v16.x, there is a bug when installing from ISO on to VMware. The automated grub install step will fail and you need to manually define /dev/sda as the grub install location. For some reason when installing on VMware, the installer can't automatically properly determine the disk to install to.

The defaults should be fine for getting you going although they are pretty minimal so depending on how much hardware you are monitoring with it, you may need to scale up the RAM at least, if not the CPU too. For more insight into what resources Observium itself might want please see the Observium docs. It's worth nothing that low CPU will just cause it to run slowly (highly unlikely to cause actual crashes). Insufficient RAM though will likely cause MySQL to crash which will cause Observium itself to crash. So if it regularly crashes, then that's almost certainly due to low RAM.

Even if you install from OVA, I assume that you should be able to add CPU cores and/or memory via VMware's interface (although I'm not super familiar with it, so I don't know the exact steps).

As for extending the root volume, there are a few different ways to go. By default it is configured with LVM (Logical Volume Management), which is sort of a bit like software RAID. So you can either add a new separate virtual disk and add it to the existing volume group. Or you can extend the existing disk (within VMware) then extend the logical volume to include the additional space.

Either way, an old blog post by Liraz should cover the steps required. If you need further guidance with that, please ask here and I'm happy to elaborate.

Feng Li's picture

Hi, Jeremy 

Thanks your detail explanation very much !

Feng Li


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