Add meeting notes for today

docs/meeting_notes/2023-08-01.md

@@ -2,18 +2,57 @@
 
 ## Agenda
 
-- We need to come to a decision on the infrastructure migration idea.
-- We should discuss [where we want to place meeting
-  minutes](https://github.com/python-discord/infra/issues/108).
-- Let's clean up our [kubernetes repo pull
-  requests](https://github.com/python-discord/kubernetes/pulls).
-- We should find a way to deal with the test failures in the infra repository
-  due to linting the Ansible playbooks. Do we fix it? Do we remove the linter?
-  For instance, [PR #110](https://github.com/python-discord/infra/pull/110)
-  bumps `dnspython` (which is only used as a lookup plugin), but CI fails.
+### Infrastructure migration
+
+The vote is tied. Chris and Johannes decided that we should test out migrating
+the PostgreSQL database at the very least. We then have more freedom about our
+data. What we need to do:
+
+- Allow PostgreSQL connections from LKE's static IPs in the firewall
+- Whitelist the static IPs from Linode via `pg_hba.conf`
+- Schedule downtime for the PostgreSQL database
+- **At downtime**
+  - Take writers offline
+  - Dump database from Linode into Netcup
+  - Update all the client's database URLs to point to netcup
+  - Restart writers
+
+We want to rely on the restore to create everything properly, but will need to
+test run this beforehand. The following `pg_virtualenv` command has showcased
+that it works properly:
+
+```sh
+kubectl exec -it postgres-... -- pg_dumpall -U pythondiscord \
+| pg_virtualenv psql -v ON_ERROR_STOP=1
+```
+
+Note however that the database extension `pg_repack` needs to be installed.
+
+Before we can get started, we need to allow the PostgreSQL role to configure
+`pg_hba.conf` and `postgresql.conf` entries.
+
+
+### Meeting notes
+
+We're using GitHub at the moment. Some are left in Notion. We should migrate
+these to GitHub to have a uniform interface: Johannes will pick up
+[python-discord/infra#108](https://github.com/python-discord/infra/issues/108)
+to merge them together into Git, as its more open than Notion.
+
+
+### Ansible lint failures in the infra repository
+
+Excluding the vault was found as the working solution here, as implemented by
+Chris.
+
+### Kubernetes repository pull requests
+
+These were cleaned up thanks to Chris.
+
 
 ## Roadmap review & planning
 
+- Chris will prepare the PostgreSQL configuration mentioned above.
 
 
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