Adventures of a Small Time OpenStack Sysadmin relate the experience of converting a small VMware cluster into two small OpenStack clusters, and the adventures and friends I made along the way.
Adventures of a Small Time OpenStack Sysadmin Chapter 007 - OpenStack Infrastructure Prep - The Easy Stuff.
Happy 4th of July to my readers.
With respect to this being "The Easy Stuff" … You will find out what that means tomorrow, LOL.
There's a lot of infrastructural grunt work to do before spinning up a new cluster.
Netbox and the managed ethernet switches need somewhat different VLANs.
Netbox needs new IP address space and new addressing scheme (may as well start over the right way based on past experience...)
Ansible can be partially prepped ahead of time with playbooks and roles ready to eventually fill out and apply.
The network has a wiki acting as a jump page, any technical device or server or lightbulb or whatever that has a URL on the network has a link to it from the main wiki jump page. So, I need a new page on the wiki for OpenStack, may as well put a couple links to online documentation for emergency purposes etc.
The Todoist runbook and scheduled maintenance scheduling tool can be pre-populated with the new hosts.
I can even add some DNS entries for future use.
I could do this work later after installation begins, but pre-configuring forces one to think about their design very hard before its a critical path. So I can think for awhile about how I should set VXLAN up, or use GENEVE or what for the overlay network, and I have time to think very hard about it because this pre-work is not on the critical path. So in a way, preconfiguring is a waste of time, but looking at it another way, its actually the most valuable and rewarding time spent.
Is that everything for infrastructure? Oh wait I forgot, my netboot / PXE infrastructure is not working. I'll tell you that long story tomorrow...
Stay tuned for the next chapter!
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