OpenStack: instance evacuation goes to host
With Grizzly came the instance evacuation but a quite recent addition to the code expended it to hosts.
OpenStack: perform a live migration using a specific NIC
Quick old tip (back from the cave) to trigger a live migration from a specific network card.
What I think about CephFS in OpenStack
I recently had some really interesting questions that led to some nice discussions. Since I received the same question twice, I thought it might be good to share the matter with the community.
The question was pretty simple and obvioulsy the context is about OpenStack:
See you at the OpenStack summit
Next week is the OpenStack Summit conference. eNovance’s team will be present at the event. The convention is going to be awesome, I saw plenty of amazing sessions and I really look forward to attending those talks. Speaking about session, Emilien Macchi and I will give a talk about High Availability in OpenStack. You can check the talk page here. Hope to see you there!
Openstack: quickly fix mirrored queues errors
Just started with Grizzly and already been through some minor issues :).
OpenStack: override DHCP information sent by DNSMASQ to a VM
One of the most annoying thing is when the resolv.conf of your VM keeps changing because of the information sent by the DNSMASQ process. In this article, I assume that your setup has some conventions such as:
- One network per customer, with fixed_ips range with something like
10.100.$ID.0/24 - One ID (number) per tenant
OpenStack Nova and availability zones
Availability zone in OpenStack. The main purpose of this article is to play a bit with availability zones.
OpenStack maintenance mode
Some tips for performing smooth maintenance in OpenStack.
OpenStack: perform consistent snapshots
Make consistent instance or volume snapshots.
Openstack and rsyslog
I don’t want to see my logs poluted by INFO messages saying “hey, I’m running!”. No thanks, it burns my I/O cycles for nothing. If it doesn’t work I have a monitoring system for that and if it’s broken I simply change the log level to DEBUG. Of course it’s personal thoughts, however for those you who are interested just click ;-).