Extend the root partition of your VM online – without LVM

One of the Major issue facing by Cloud User is, the root disk will be small even you are using a high flavor. Suppose your flavor disk is 160GB, but root disk on the VM is 8GB. So, how can I extend the root partition online without unmount, and LVM. Here is the solution. I…

Affinity & Anti-Affinity

Openstack itself, doesnot provide hypervisor high availability. But still, openstack administrator can create HA cluster for their applications. But for this, administrator should make sure that, the virtual machines he deployed must be in different hypervisor. Normally, nova-scheduler will choose the hypervisor based on the filter applied in the nova.conf file. So, how can an…