Increasing the vcpus and RAM of Compute node

asked 2015-03-27 01:08:33 -0600

BenG gravatar image

Installed HP Helion Community 1.4. But my compute node is having only 1vcpus and 8Gb RAM. How can I increase the vcpus and RAM of this compute node ? . I have enough resources available in host machine.

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answered 2015-03-27 18:01:44 -0600

If you've got the free resources available, it may be simplest to install Helion CE again and use a vm plan file to specify what size your compute node needs to be. A good example of this can be found in this install guide:

Basically, a vm_plan.csv file contents might look like this:


...where "4,6144,,OvercloudCompute" tells you the compute nodes are 4vcpu, 6GB RAM.

Once you've got a plan file, you just have to point the installer at it. For example:

bash -x /root/work/tripleo/tripleo-incubator/scripts/ --create-seed --vm-plan /root/vm_plan.csv 2>&1|tee seedvminstall.log
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Thanks for the reply. I will try it out. So, is there any un-installation script for Helion or any possibility of re-configuring the existing compute node?. If there is no option, if will start with a fresh Ubuntu 14.04 LTS

BenG gravatar imageBenG ( 2015-03-27 20:59:02 -0600 )edit

See this guide for resetting between installations (

Grazzer gravatar imageGrazzer ( 2015-03-28 07:09:01 -0600 )edit

No, there's not really any concept of uninstall - and while there are ways to reconfigure an existing node, to be honest it's quicker to do a fresh install.

If you want to reconfigure, you'll need to edit the raw xml files for the qemu VMs - not impossible, but not user-friendly either. :)

tedlit gravatar imagetedlit ( 2015-03-28 21:46:52 -0600 )edit

answered 2015-03-28 07:05:34 -0600

Some sample installations can be found here -

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Asked: 2015-03-27 01:08:33 -0600

Seen: 648 times

Last updated: Mar 27 '15