Watch out for downtime due to: https://phabricator.wikimedia.org/phame/post/view/120/neutron_is_here/

Great timing.

In T211149#4799027, @Chippyy wrote:

Watch out for downtime due to: https://phabricator.wikimedia.org/phame/post/view/120/neutron_is_here/

Great timing.

If you build the new instance in the eqiad1-r region then there will be no migration downtime for the instance since it will already be in the new location. If Horizon is not showing eqiad1-r as an allowed region for the maps project, @Andrew can fix that for you.

After some extensive work with Docker containers, it seems they are much cleaner, more portable, and much easier to deploy approach, without any performance or other issues. I would highly recommend repackaging under Docker.

Old instance is now in new location (for neutron) and site is working as before.

Code's been updated to work with Stretch (and runs ok on local VM) https://github.com/wikimaps-dev/mapwarper/commit/151e6e8c10e27c5e40a14b5ee864b5b9571cce38

Update 😃

Instance provisioned maps-warper3

Packages installed
(compiled gdal utility installed to /usr/local/bin/gdal/utilities as the apt package has a bug )

warper application installed

database dumped and restored to new server

All appears to be working fine. NOTE I switched over the proxy https://warper.wmflabs.org to maps-warper3 so the main application will be on the new server.

The old application running on https://warper-old.wmflabs.org just in case things are borked and we can go back, before switching it off. Worth giving it a few days for any kinks to show themselves.

TODO - check any crons, logrotates, custom configs and any other stuff I can think of which might need migrating or different from ubuntu to debian.

for the record. https://phabricator.wikimedia.org/T208406 is relevant to maps-warper3 instance as we store around 230G worth of images in /home/warperdata

We could certainly have a local disk, but it would need to be big enough to accommodate new maps being added. I think 500G should be enough. At the very least, the NFS could use the project store without /home being mapped to the NFS which is a bit silly. Anyhow, priority here is to migrate from ubuntu instance to debian instance.

I think all the logrotate and the crontabs are copied across also. Wouldn't mind a day before we remove the warper-old proxy and then we can turn off the old instance.

I've removed the warper-old proxy. and shut off the maps-warper2 instance. I'd like to keep it around for a week or so before deletion though.