nixos/ipfs-cluster: init (#292290)

nixos/doc/manual/release-notes/rl-2505.section.md

···
 
 - [Pareto Security](https://paretosecurity.com/) is an alternative to corporate compliance solutions for companies that care about security but know it doesn't have to be invasive. Available as [services.paretosecurity](#opt-services.paretosecurity.enable)
 
+- [ipfs-cluster](https://ipfscluster.io/), Pinset orchestration for IPFS. Available as [services.ipfs-cluster](#opt-services.ipfs-cluster.enable)
+
 <!-- To avoid merge conflicts, consider adding your item at an arbitrary place in the list instead. -->
 
 ## Backward Incompatibilities {#sec-release-25.05-incompatibilities}

nixos/modules/module-list.nix

···
   ./services/network-filesystems/kubo.nix
   ./services/network-filesystems/litestream/default.nix
   ./services/network-filesystems/moosefs.nix
+  ./services/network-filesystems/ipfs-cluster.nix
   ./services/network-filesystems/netatalk.nix
   ./services/network-filesystems/nfsd.nix
   ./services/network-filesystems/openafs/client.nix

nixos/modules/services/network-filesystems/ipfs-cluster.nix

···
+{
+  config,
+  lib,
+  pkgs,
+  options,
+  ...
+}:
+let
+  cfg = config.services.ipfs-cluster;
+
+  # secret is by envvar, not flag
+  initFlags = toString [
+    (lib.optionalString (cfg.initPeers != [ ]) "--peers")
+    (lib.strings.concatStringsSep "," cfg.initPeers)
+  ];
+in
+{
+  options = {
+
+    services.ipfs-cluster = {
+
+      enable = lib.mkEnableOption "Pinset orchestration for IPFS - requires ipfs daemon to be useful";
+
+      consensus = lib.mkOption {
+        type = lib.types.enum [
+          "raft"
+          "crdt"
+        ];
+        description = "Consensus protocol - 'raft' or 'crdt'. https://cluster.ipfs.io/documentation/guides/consensus/";
+      };
+
+      dataDir = lib.mkOption {
+        type = lib.types.str;
+        default = "/var/lib/ipfs-cluster";
+        description = "The data dir for ipfs-cluster.";
+      };
+
+      initPeers = lib.mkOption {
+        type = lib.types.listOf lib.types.str;
+        default = [ ];
+        description = "Peer addresses to initialize with on first run.";
+      };
+
+      openSwarmPort = lib.mkOption {
+        type = lib.types.bool;
+        default = false;
+        description = "Open swarm port, secured by the cluster secret. This does not expose the API or proxy. https://cluster.ipfs.io/documentation/guides/security/";
+      };
+
+      secretFile = lib.mkOption {
+        type = lib.types.nullOr lib.types.path;
+        default = null;
+        description = ''
+          File containing the cluster secret in the format of EnvironmentFile as described by
+          {manpage}`systemd.exec(5)`. For example:
+          <programlisting>
+          CLUSTER_SECRET=<replaceable>...</replaceable>
+          </programlisting>
+
+          If null, a new secret will be generated on first run and stored in the data directory.
+          A secret in the correct format can also be generated by: `openssl rand -hex 32`
+        '';
+      };
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    assertions = [
+      {
+        assertion = cfg.enable -> config.services.kubo.enable;
+        message = "ipfs-cluster requires ipfs - configure and enable services.kubo";
+      }
+    ];
+
+    environment.systemPackages = [ pkgs.ipfs-cluster ];
+
+    systemd.tmpfiles.rules = [
+      "d '${cfg.dataDir}' - ${config.services.kubo.user} ${config.services.kubo.group} - -"
+    ];
+
+    systemd.services.ipfs-cluster-init = {
+      path = [
+        "/run/wrappers"
+        pkgs.ipfs-cluster
+      ];
+      environment.IPFS_CLUSTER_PATH = cfg.dataDir;
+      wantedBy = [ "default.target" ];
+
+      serviceConfig = {
+        ExecStart = [
+          "${lib.getExe' pkgs.ipfs-cluster "ipfs-cluster-service"} init --consensus ${cfg.consensus} ${initFlags}"
+        ];
+        Type = "oneshot";
+        RemainAfterExit = true;
+        User = config.services.kubo.user;
+        Group = config.services.kubo.group;
+        EnvironmentFile = lib.mkIf (cfg.secretFile != null) cfg.secretFile;
+      };
+      # only run once (= when the data directory is empty)
+      unitConfig.ConditionDirectoryNotEmpty = "!${cfg.dataDir}";
+    };
+
+    systemd.services.ipfs-cluster = {
+      environment.IPFS_CLUSTER_PATH = cfg.dataDir;
+      wantedBy = [ "multi-user.target" ];
+
+      wants = [ "ipfs-cluster-init.service" ];
+      after = [ "ipfs-cluster-init.service" ];
+
+      serviceConfig = {
+        Type = "notify";
+        ExecStart = [ "${lib.getExe' pkgs.ipfs-cluster "ipfs-cluster-service"} daemon" ];
+        User = config.services.kubo.user;
+        Group = config.services.kubo.group;
+      };
+    };
+
+    networking.firewall.allowedTCPPorts = lib.mkIf cfg.openSwarmPort [ 9096 ];
+  };
+
+  meta = {
+    maintainers = with lib.maintainers; [
+      sorki
+    ];
+  };
+}