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diff --git a/content/blog/nix/migrating-miniflux.md b/content/blog/nix/migrating-miniflux.md new file mode 100644 index 0000000..04ce95c --- /dev/null +++ b/content/blog/nix/migrating-miniflux.md @@ -0,0 +1,124 @@ +--- +title: Migrating miniflux to nixos +description: How I migrated my miniflux installation to nixos +date: 2024-01-07 +tags: +- miniflux +- nix +--- + +## Introduction + +I am migrating several services from a k3s kubernetes cluster to a nixos server. Here is how I performed the operation with my [miniflux rss reader](https://miniflux.app/). + +## Miniflux with nixos + +Miniflux is packaged on nixos, but I am used to the container image so I am sticking with it for now. + +Here is the module I wrote to deploy a miniflux container, configure postgresql and borg backups: +```nix +{ config, lib, pkgs, ... }: +{ + imports = [ + ../../lib/borg-client.nix + ../../lib/postgresql.nix + ../../lib/nginx.nix + ]; + environment.etc."borg-miniflux-db.key" = { + mode = "0400"; + source = ./borg-db.key; + }; + services = { + borgbackup.jobs = let defaults = { + compression = "auto,zstd"; + doInit = true; + encryption.mode = "none"; + prune.keep = { + daily = 14; + weekly = 4; + monthly = 3; + }; + startAt = "daily"; + }; in { + "miniflux-db" = defaults // { + environment.BORG_RSH = "ssh -i /etc/borg-miniflux-db.key"; + paths = "/tmp/miniflux.sql"; + postHook = "rm -f /tmp/miniflux.sql"; + preHook = ''rm -f /tmp/miniflux.sql; /run/current-system/sw/bin/pg_dump -h localhost -U miniflux -d miniflux > /tmp/miniflux.sql''; + repo = "ssh://borg@gcp.adyxax.org/srv/borg/miniflux-db"; + }; + }; + nginx.virtualHosts."miniflux.adyxax.org" = { + forceSSL = true; + locations = { + "/" = { + proxyPass = "http://127.0.0.1:8084"; + }; + }; + sslCertificate = "/etc/nginx/adyxax.org.crt"; + sslCertificateKey = "/etc/nginx/adyxax.org.key"; + }; + postgresql = { + ensureUsers = [{ + name = "miniflux"; + ensurePermissions = { "DATABASE \"miniflux\"" = "ALL PRIVILEGES"; }; + }]; + ensureDatabases = ["miniflux"]; + }; + }; + virtualisation.oci-containers.containers = { + miniflux = { + environment = { + ADMIN_PASSWORD = lib.removeSuffix "\n" (builtins.readFile ./admin-password.key); + ADMIN_USERNAME = "admin"; + DATABASE_URL = "postgres://miniflux:" + (lib.removeSuffix "\n" (builtins.readFile ./database-password.key)) + "@10.88.0.1/miniflux?sslmode=disable"; + RUN_MIGRATIONS = "1"; + }; + image = "miniflux/miniflux:2.0.50"; + ports = ["127.0.0.1:8084:8080"]; + }; + }; +} +``` + +## Dependencies + +The dependencies are mostly the same as in [my article about vaultwarden migration]({{< ref "migrating-vaultwarden.md" >}}#dependencies). + +## Migration process + +The first step is obviously to deploy this new configuration to the server, then I need to login and manually restore the backups. +```sh +make run host=dalinar.adyxax.org +``` + +The container will be failing because no password is set on the database user yet, so I stop it: +```sh +systemctl stop podman-miniflux +``` + +There is only one backup job for miniflux and it holds a dump of the database: +```sh +export BORG_RSH="ssh -i /etc/borg-miniflux-db.key" +borg list ssh://borg@gcp.adyxax.org/srv/borg/miniflux-db +borg extract ssh://borg@gcp.adyxax.org/srv/borg/miniflux-db::dalinar-miniflux-db-2023-11-20T00:00:01 +psql -h localhost -U postgres -d miniflux +``` + +Restoring the data itself is done with the psql shell: +```sql +ALTER USER miniflux WITH PASSWORD 'XXXXXX'; +\i tmp/miniflux.sql +``` + +Afterwards I clean up the database dump and restart miniflux: +```sh +rm -rf tmp/ +systemctl start podman-miniflux +``` + +To wrap this up I migrate the DNS records to the new host, update my monitoring system and clean up the namespace on the k3s server. + +## Conclusion + +I did all this in november, I have quite the backlog of articles to write! |