openstack-neutron-networking_part2

Neutron is a an Openstack module which takes care of networking using the Plug-ins.It consists of the following Logical Elements depicted below in Figure 01. We will use the below figures 01 and 02 as reference through out this blog.   Figure01   Figure02 1) Neutron Server ( API Server): It receives the API calls and directs them to Neutron Plugins.Neutron-server is basically a Python daemon that provides the  the…

Troubleshooting_Openstack_Part1

My Use Case: Troubleshooting “No valid host was found” Error: Failed to perform requested operation on instance “Waghoba”,  the instance has an error status: Please try again later [Error: No  valid host was found. There are not enough hosts available.].   Troubleshooting Openstack is not a easy Job. Logs, logs and more logs , all you need to look at those voluminous log at different locations. Typically when encountered with “No Valid Host Found ” error you need to check the filters. In this example the error was caused due to Insufficient Disk ” space or inappropriate disk partition. Lets see how…