openstack
		
					
			
				12 08 2015
				
				
				Figure out how recover from split brain Recently my whole rabbitmq cluster 3.5 crashed. Generally just restart the last node up before the crash is enough. But sometimes not. I would point out that I have learned in some worst case scenario with rabbitmq. I’m not going to talk about a simple node crash, rabbitmq handle this […]
				 
				debug, devops, openstack, rabbitmq, troubleshooting
			
			
					
			
				4 07 2015
				
				
				One day I had a bug on OpenStack platform. If I remember well it was a nova problem. Lucky day for a debug session, all nova logs was in DEBUG level ! But as you may know, when you set this log level in OpenStack services, the output can be really, really, really verbose. So […]
				 
				debug, devops, glance, linux, neutron, nova, openstack, tools
			
			
					
			
				20 01 2015
				
				
				Quick presentation about 4 methodes (guestfish, guestmount, virt-* tools, qemu nbd) to update glance image. Add, remove, update files and install package before upload into glance.
				 
				glance, image, openstack, qcow2, update