Recently I have deployed a 3 node Neutron based OpenStack environment – Controller, Network and Compute, and I have encountered with many error messages throughout the establishment process of a working environment. As a determined ITer who gets the job done, I had to research what are those error messages mean and possible ways to solve the underlying issues evoking them (most are incorrect configurations or timing issues). In this blog post I’ll summarize common error messages and their solutions. I hope you’ll find it helpful.
First things first, in order to debug an issue with a related error/warning message it’s better to understand the flow between the different components in OpenStack.
And also to understand where each service/agent resides in a multi-node environment. Running the following commands will shed some light on how to approach debugging. Continue reading