osops/contrib/nova

Nova folder

this folder contains scripts that are related to Nova

Compare Nova state to hypervisor state: nova-libvirt-compare.py

This retrieves all instances in a region (or all regions when called with -a), then compares that with the libvirt domains running on all hypervisor hosts in that region, and reports any differences.

Usage

usage: nova-libvirt-compare.py [-h] [-a] [-l REMOTE_USER]
                               [--no-note-incomplete]
                               [--blindly-trust-host-keys] [-p PROCESSES] [-v]

Check for inconsistent state between Nova DB and hypervisors

optional arguments:
  -h, --help            show this help message and exit
  -a, --all-regions     query all regions
  -l REMOTE_USER, --remote-user REMOTE_USER
                        SSH remote username for connecting to hypervisors
  --no-note-incomplete  Don't report incomplete instances
  --blindly-trust-host-keys
                        Accept all SSH host keys. This enables man-in-the-
                        middle attacks!
  -p PROCESSES, --processes PROCESSES
                        Number of parallel processes connecting to hypervisors
  -v, --verbose         verbose

Example

$ ./nova-libvirt-compare.py
Hypervisor zhdk0062.zhdk.cloud.switch.ch should know about bd384f32-5e05-43a5-a66e-fc11693a733b, but doesn't
Instance ebd1c623-35c3-4385-998f-10a96ecfbcdf (state BUILD) has no hypervisor