nixos/hosts/linode/postgres.nix

{ config, pkgs, ... }:

{
  environment.systemPackages = [ pkgs.upgrade-pg-cluster ];

  services.postgresql = {
    enable = true;
    package = pkgs.postgresql_15;
    checkConfig = true;
    ensureDatabases = [ "nextcloud" ];
    #initialScript = pkgs.writeText "create-matrix-db.sql" ''
    #	CREATE ROLE "matrix-synapse" WITH LOGIN;
    #	CREATE DATABASE "synapse" WITH OWNER "matrix-synapse" TEMPLATE template0 LC_COLLATE = "C" LC_CTYPE = "C";
    #	GRANT ALL PRIVILEGES ON DATABASE "synapse" TO "matrix-synapse";
    #'';  # These are done manually in order to set the LC_COLLATE values properly
    ensureUsers = [
      {
        name = "nextcloud";
        ensureDBOwnership = true;
      }
    ];
    settings = {
      log_connections = true;
      log_statement = "all";
      logging_collector = true;
      log_filename = "postgresql.log";
    };
    identMap = ''
      root root postgres
    '';
  };

  services.postgresqlBackup = {
    enable = true;
    databases = [ "nextcloud" ];
  };

  services.logrotate = {
    enable = true;
    settings = {
      postgresBackup = {
        enable = true;
        files = "${config.services.postgresqlBackup.location}/*.gz";
      };
      postgresLog = {
        enable = true;
        files = "/var/lib/postgresql/*/log/*.log";
        compress = true;
        compresscmd = "${pkgs.xz}/bin/xz";
      };
    };
  };

  greg.backup.jobs.greg-postgresql-backup = {
    src = config.services.postgresqlBackup.location;
    dest = "linode-postgres";
    id = "linode-postgres";
  };
}