MeshDB Stateful Cutover Instruction

1. Place the destination copy of MeshDB into maintenance mode by running manage.py enable_flag MAINTENANCE_MODE inside of any of the meshweb Kubernetes pods
2. Make an announcement on slack in the #meshdb channel
   1. Template: Hey all, we're going to do some work on MeshDB over the next hour or so. The Admin panel, SQL Explorer, query form, and Mesh API, will all be unavailable. The website network map and join form will remain active. I will post back here when things are back to normal. Thank you for your patience
3. Place the originating copy of MeshDB into maintenance mode by setting the MAINTENANCE_MODE feature flag to true via the admin UI or using the manage.py command as in step 1 above
   1. More info here: https://wiki.nycmesh.net/books/6-services-software/page/maintenance-mode
4. 
   
5. Modify the DNS CNAME record to point db.nycmesh.net to the LB at the supernode hosting the destination copy of MeshDB
   
   1. Example PR: https://github.com/nycmeshnet/nycmesh-dns/pull/210/files 
6. Wait for the DNS change to roll out. Then modify the LB configuration for the LB at the destination supernode to pull TLS certificates for the MeshDB domain
   1. Example PR: https://github.com/nycmeshnet/k8s-infra/pull/99/files 
7. Disable maintenance mode on the destination copy of MeshDB by running manage.py disable_flag MAINTENANCE_MODE inside of any of the meshweb Kubernetes pods
8. Send a slack message to the #meshdb channel indicating the work is complete
   
   1. Template: Okay things should be back to normal now, please let us know if anything is not working correctly