# Fallbacks

We will run fallback servers using Arun's Guix machine configuration. Outside the system container there are a few dependencies, particularly MariaDB and a number of file directories.

# Tags

* assigned: pjotrp
* priority: medium
* type: system administration
* keywords: system administration, GN, tux01, tux02, tux04, balg01

# Tasks

## Prepare backups to copy to the new machines

Note that copying from the new machines is 10x faster.

* [X] Copy backup from tux01 to balg01
* [X] Copy backup from tux01 to tux04
* [X] Copy backup from balg01 to tb
* [+] Make sure CRON works on tux01 for balg01
* [X] Make sure CRON works on tux01 for tux04
* [X] Make sure CRON works on tux01 for space
* [ ] Make sure CRON works on tb
* [ ] Create borg-borg on tb
* [ ] After borg-borg add CRON `borg prune' on tux01

## Update guix

* [X] Make sure guix is on a large partition (200Gb)
* [X] Update guix in /usr/local/guix-profiles
* [X] Disable default guix on Debian
* [X] Reboot
* [X] Update nftables

Having issues with sdd drive.

## Install mariadb

* [X] Extract DB from backup on a fast partition
* [X] Install mariadb using guix
* [X] Add to systemd

see also

=> ../deploy/installation

## Unpack genotype files and other files

* [X] borg extract genotype files

```
/usr/local/guix-profiles/gn-latest/bin/borg extract /export2/data/wrk/tux01/borg-genenetwork::borg-GN2-home-20240218-10:00-Sun --progress
```

* [X] extract redis
* [+] backup and extract sqlite for auth, e.g. auth_prod_20240218.db

## Guix system container

* [X] Assess gemtext documentation
* [ ] Check tux02 configurations

The main example lives in


we create fallback.scm, see

=> fire-up-genenetwork-system-container.gmi

* [ ] Set up guix channels
* [ ] Set up guix gcroot
* [ ] Update systemd
* [ ] Add gn-guile to configuration
* [ ] Test, test, test

=> guix-system-containers-and-how-we-use-them More info

## Sheepdog monitoring

* [ ] Move host to tb
* [ ] Update all clients
* [ ] Add monitoring new fallback services

## Continuous updates

* [ ] Mariadb
* [ ] Redis
* [ ] Auth
* [ ] Files