This runs two (2) instances. Apache/httpd is configured to send `/mirrorlist`
to one and `/debuglist` to the other.
* Every fifteen (15) minutes: Mirrorlist cache is regenerated
* This queries the database for active mirrors and other information and writes a protobuf. The mirrorlist-server reads the protobuf and responds accordingly.
* Every twenty (20) minutes: Service hosting `/mirrorlist` is restarted
* Every twenty-one (21) minutes: Service hosting `/debuglist` is restarted
Note that the timing for the restart of the mirror list instances are arbitrary.
### Mirror Manager 2
This is a uwsgi service fronted by an apache/httpd instance. This is responsible
for everything else that is not `/mirrorlist` or `/debuglist`. This allows the
mirror managers to, well, manage their mirrors.
### CDN
Fastly sits in front of mirror manager. VPN is required to access the `/admin` endpoints.
If the backend of the CDN is down, it will attempt to guess what the user wanted to access and spit out a result on the dl.rockylinux.org website. For example, a request for AppStream-8 and x86_64 will result in a `AppStream/x86_64/os` directory on dl.rockylinux.org. Note that this isn't perfect, but it helps in potential down time or patching.
/opt/mirrormanager/scan-primary-mirror-0.4.2/target/debug/scan-primary-mirror --debug --config $HOME/scan-primary-mirror.toml --category 'Rocky Linux SIGs'
```
2. Update the redirects for `$reponame-$releasever`
a. Use psql to mirrormanager server: `psql -U mirrormanager -W -h mirrormanager_db_host mirrormanager_db`
b. Confirm that all three columns are filled and that the second and third columns are identical: `select rr.from_repo AS "From Repo", rr.to_repo AS "To Repo", r.prefix AS "Target Repo" FROM repository_redirect AS rr LEFT JOIN repository AS r ON rr.to_repo = r.prefix GROUP BY r.prefix, rr.to_repo, rr.from_repo ORDER BY r.prefix ASC;`
c. Change the `majorversion` redirects to point to the new point release, for example: `update repository_redirect set to_repo = regexp_replace(to_repo, '9\.0', '9.1') where from_repo ~ '(\w+)-9';`
3. Generate the mirrorlist cache and restart the debuglist and verify.
Once the bitflip is initiated, restart mirrorlist and reenable all cronjobs.
### Out-of-date Mirrors
1. Get current shasum of repomd.xml. For example: `shasum=$(curl https://dl.rockylinux.org/pub/rocky/9.0/BaseOS/x86_64/os/repodata/repomd.xml | sha256sum)`
This will generate a table. You can take the IDs in the first column and use the database to disable them by ID (table name: hosts) or go to https://mirrors.rockylinux.org/mirrormanager/host/ID and uncheck 'User active'.
Users can change user active, *but* they cannot change admin active. It is better to flip user active in this case.
Admins can also view https://mirrors.rockylinux.org/mirrormanager/admin/all_sites if necessary.
