working backup

lxc-metrics.nix

@@ -105,24 +105,32 @@
             }
           ];
         }
-        { job_name = "nut";
+        {
+          job_name = "nut";
           metrics_path = "/ups_metrics";
-          params = { ups = [ "minirack-1500va" ]; };
-          static_configs = [{
+          params = {
+            ups = [ "minirack-1500va" ];
+          };
+          static_configs = [
+            {
               targets = [
                 "127.0.0.1:9199"
               ];
               labels = {
                 ups = "minirack-1500va";
               };
-          }];
             }
-        { job_name = "minecraft";
-          static_configs = [{
+          ];
+        }
+        {
+          job_name = "minecraft";
+          static_configs = [
+            {
               targets = [
                 "craft01:25585"
               ];
-          }];
+            }
+          ];
         }
       ];
     };
@@ -131,10 +139,17 @@
       enable = true;
       nutServer = "xalicas";
       nutVariables = [
-        "battery.charge" "battery.charge.low" "battery.charge.warning"
-        "battery.runtime" "battery.runtime.low"
-        "ups.load" "ups.power" "ups.power.nominal" "ups.realpower"
-        "ups.realpower.nominal" "ups.status"
+        "battery.charge"
+        "battery.charge.low"
+        "battery.charge.warning"
+        "battery.runtime"
+        "battery.runtime.low"
+        "ups.load"
+        "ups.power"
+        "ups.power.nominal"
+        "ups.realpower"
+        "ups.realpower.nominal"
+        "ups.status"
       ];
     };
 
@@ -142,7 +157,7 @@
       paths = [ "/var/lib/grafana/data/grafana.db" ];
       archiveBaseName = null;
       encryption.mode = "none";
-      environment.BORG_RSH = "ssh -i /home/admin/.ssh/id_ed25519";
+      environment.BORG_RSH = "ssh -i /etc/ssh/ssh_host_ed25519_key";
       repo = "ssh://backup@xalicas/./grafana";
       compression = "auto,zstd";
       startAt = "daily";

recipes/borg-auth.bash

@@ -1,10 +1,11 @@
 #!/usr/bin/env bash
 
+set -euo pipefail
+
 get_key() {
   hostname=$1
   ip=$2
-  ssh "admin@$ip" -- 'if [ ! -f /home/admin/.ssh/id_ed25519.pub ]; then ssh-keygen -t ed25519; fi'
-  pubkey=$(ssh "admin@$ip" cat '$HOME/.ssh/id*.pub')
+  pubkey=$(ssh "admin@$ip" sudo cat '/etc/ssh/ssh_host_ed25519_key.pub')
   echo 'command="mkdir -p /borg/'"$hostname"'; cd /borg/'"$hostname"'; borg serve --restrict-to-path /borg/'"$hostname"'",restrict '"$pubkey"
 }
 
@@ -15,4 +16,16 @@ put_key() {
   ssh -t robert@xalicas "sudo -u backup mkdir -p ~backup/.ssh; echo '$line' | sudo -u backup tee -a ~backup/.ssh/authorized_keys"
 }
 
+manually_debug_borg_command() {
+  jobname="$1"
+  service="/etc/systemd/system/borgbackup-job-$jobname.service"
+  borg_rsh=$(grep BORG_RSH "$service" | cut -d= -f3 | sed 's/"$//')
+  borg_repo=$(grep BORG_REPO "$service" | cut -d= -f3 | sed 's/"$//')
+  script1=$(grep ExecStart "$service" | cut -d= -f2 | sed 's/ $//')
+  script2=$(grep '^exec' "$script1" | cut -d\  -f2)
+  set -x
+  sudo env BORG_RSH="$borg_rsh" BORG_REPO="$borg_repo" "$script2" || true
+  set +x
+}
+
 "$@"

vm-base.nix

@@ -1,4 +1,10 @@
-{ config, pkgs, modulesPath, lib, ... }:
+{
+  config,
+  pkgs,
+  modulesPath,
+  lib,
+  ...
+}:
 
 {
   imports = [
@@ -27,10 +33,13 @@
     };
   };
 
-  config = let cfg = config.my.vm; in {
+  config =
+    let
+      cfg = config.my.vm;
+    in
+    {
       proxmox.qemuConf.name = cfg.name;
-    # virtualisation.diskSize = 10240; # MiB
-    proxmox.qemuConf.diskSize = "auto";
+      virtualisation.diskSize = "auto";
 
       # Enable QEMU Guest for Proxmox
       services.qemuGuest.enable = lib.mkDefault true;
@@ -42,8 +51,14 @@
       boot.growPartition = lib.mkDefault true;
 
       # Allow remote updates with flakes and non-root users
-    nix.settings.trusted-users = [ "root" "@wheel" ];
-    nix.settings.experimental-features = [ "nix-command" "flakes" ];
+      nix.settings.trusted-users = [
+        "root"
+        "@wheel"
+      ];
+      nix.settings.experimental-features = [
+        "nix-command"
+        "flakes"
+      ];
 
       # Enable mDNS for `hostname.local` addresses
       services.avahi.enable = true;
@@ -71,10 +86,12 @@
         hostName = cfg.name;
         nameservers = [ "192.168.0.1" ];
         interfaces.${cfg.iface} = {
-        ipv4.addresses = [{
+          ipv4.addresses = [
+            {
               address = cfg.ip4;
               prefixLength = 24;
-        }];
+            }
+          ];
         };
         defaultGateway = {
           address = "192.168.0.1";

vm-homelab.nix

@@ -1,5 +1,8 @@
-{ inputs, pkgs, ... }:
+{ pkgs, ... }:
 
+let
+  minidump = pkgs.writeScript "minidump" "exec /run/wrappers/bin/sudo -u postgres /run/current-system/sw/bin/pg_dump miniflux";
+in
 {
   imports = [
     ./vm-base.nix
@@ -87,5 +90,15 @@
         mailer.ENABLED = false;
       };
     };
+
+    services.borgbackup.jobs.miniflux = {
+      dumpCommand = minidump;
+      archiveBaseName = null;
+      encryption.mode = "none";
+      environment.BORG_RSH = "ssh -i /etc/ssh/ssh_host_ed25519_key";
+      repo = "ssh://backup@xalicas/./miniflux";
+      compression = "auto,zstd";
+      startAt = "daily";
+    };
   };
 }