After a recent OpenStack-Ansible (OSA) deployment on CentOS, I found that keepalived was not starting properly at boot time: Keepalived_vrrp: Cant find interface br-mgmt for vrrp_instance internal !!! Keepalived_vrrp: Truncating auth_pass to 8 characters Keepalived_vrrp: VRRP is trying to assign ip address 172.29.236.11⁄32 to unknown br-mgmt interface !!! go out and fix your conf !!! Keepalived_vrrp: Cant find interface br-mgmt for vrrp_instance external !!! Keepalived_vrrp: Truncating auth_pass to 8 characters Keepalived_vrrp: VRRP is trying to assign ip address 192.
I opened up a noVNC console to a virtual machine today in my OpenStack cloud but found that the console wouldn’t take keyboard input. The Send Ctrl-Alt-Del button in the top right of the window worked just fine, but I couldn’t type anywhere in the console. This happened on an Ocata OpenStack cloud deployed with OpenStack-Ansible on CentOS 7. Test the network path The network path to the console is a little deep for this deployment, but here’s a quick explanation:
Thanks to everyone who attended my talk at the OpenStack Summit in Barcelona! I really enjoyed sharing some tips with the audience and it was great to meet some attendees in person afterwards. If you weren’t able to make it, don’t fret! This post will cover some of the main points of the talk and link to the video and slides. Purpose OpenStack clouds are inherently complex. Operating a cloud involves a lot of moving pieces in software, hardware, and networking.
I ran into an interesting problem recently in my production OpenStack deployment that runs the Mitaka release. On various occasions, instances were coming online with multiple network ports attached, even though I only asked for one network port. The problem If I issued a build request for ten instances, I’d usually end up with this: 6 instances with one network port attached 2-3 instances with two network ports attached (not what I want) 1-2 instances with three or four network ports attached (definitely not what I want) When I examined the instances with multiple network ports attached, I found that one of the network ports would be marked as up while the others would be marked as down.
NOTE: This post is a work in progress. If you find something that I missed, feel free to leave a comment. I’ve made plenty of silly mistakes, but I’m sure I’ll make a few more. :) Completing a deployment of an OpenStack cloud is an amazing feeling. There is so much automation and power at your fingertips as soon as you’re finished. However, the mood quickly turns sour when you create that first instance and it never responds to pings.