defiant/metrics: Remove zfs exporter, fix snmp exporter

hosts/defiant/services/metrics/default.nix

@@ -5,6 +5,6 @@
     ./prometheus.nix
     ./grafana.nix
     ./loki.nix
-    #./snmp-exporter.nix
+    ./snmp-exporter.nix
   ];
 }

hosts/defiant/services/metrics/prometheus.nix

@@ -59,15 +59,6 @@ in {
           }
         ];
       }
-      {
-        job_name = "zfs";
-        static_configs = [
-          { targets = [
-            "voyager.home.feal.no:9134"
-            "defiant.home.feal.no:9134"
-          ]; }
-        ];
-      }
     ];
   };
 }

hosts/defiant/services/metrics/snmp-exporter.nix

@@ -12,8 +12,8 @@
       Type = "simple";
     };
     serviceConfig = {
-      ExecStart = "${pkgs.prometheus-snmp-exporter}/bin/snmp_exporter --config.file='/var/prometheus/snmp.yml'";
+      ExecStart = "${pkgs.prometheus-snmp-exporter}/bin/snmp_exporter --config.file='/tank/services/metrics/prometheus/snmp.yml'";
-      # TODO: Fix this conf file!
+      # snmp.yml = https://github.com/prometheus/snmp_exporter/blob/main/snmp.yml + https://global.download.synology.com/download/Document/Software/DeveloperGuide/Firmware/DSM/All/enu/Synology_DiskStation_MIB_Guide.pdf
     };
     wantedBy = [ "multi-user.target" ];
   };

hosts/voyager/filesystems.nix

@@ -11,19 +11,6 @@
     kernelPackages = config.boot.zfs.package.latestCompatibleLinuxPackages;
   };
   services.zfs.autoScrub.enable = true;
-  services.prometheus.exporters.zfs = {
-    enable = true;
-    # "ip46" is cursed, do it manually below
-    # openFirewall = true;
-    # firewallFilter = "-p tcp -m tcp --source 192.168.10.175/32 --dport 9134";
-  };
-  networking.firewall = {
-    allowedTCPPorts = [ 9134 ];
-    extraCommands = ''
-      iptables -A INPUT -p tcp -m tcp --source 192.168.10.175/32 --dport 9134 -j ACCEPT
-      iptables -A INPUT -p tcp -m tcp --dport 9134 -j DROP
-    '';
-  };
 
   # Network mounts (import)
   fileSystems = {