Openstack

Dynamic provision of instances based on static inventory in Ansible

This post is slightly different from my usual. Instead of providing some solution I will lay out here the problem and some thoughts about it.

ARP stale cache and a rather peculiar arp_notify behavior in Linux

We’ve got a minor bug in our monitoring systems. Check for Neutron’s DHCP agent availability occasionally generated false positives (reporting problem when everything is OK). We’re checking DHCP agents availability…

Linux: how to completely disable keyboard for a virtual machine under KVM

It’s a simple problem: we want to have an instance which ignores all user input.

The problem can be split into two parts:

• disable all Linux interaction…