Merge pull request 'Worktree ipa lxc kerberos fix' (#85 ) from worktree-ipa-lxc-kerberos-fix into main

Reviewed-on: #85
feat(ipa): add Home Manager config for IPA primary user
2026-07-28 02:55:20 +00:00 · 2026-07-28 12:53:10 +10:00 · 2026-07-28 12:32:33 +10:00 · 2026-07-28 02:13:47 +00:00 · 2026-07-28 12:07:58 +10:00 · 2026-07-28 11:45:06 +10:00
8 changed files with 222 additions and 50 deletions
@@ -1,50 +1,7 @@
-{ config, pkgs, lib, vars, ... }:
+_:

-let
-  # Flake attribute names are now <platform>-<buildtype> (e.g. proxmox-docker)
-  # and no longer match networking.hostName, since a host's hostname stays
-  # fixed while the platform backing it can change. Each nixosConfiguration
-  # stamps its own active target name into /etc/flake-target at build time.
-  mySwitchCmd = ''
-    sudo nixos-rebuild switch \
-      --no-write-lock-file \
-      --refresh \
-      --flake git+https://${vars.lanDomain}/beatzaplenty/nixos.git#$(cat /etc/flake-target)
-  '';
-  myTestCmd = ''
-    sudo nixos-rebuild test \
-      --no-write-lock-file \
-      --refresh \
-      --flake git+https://${vars.lanDomain}/beatzaplenty/nixos.git#$(cat /etc/flake-target)
-  '';
-
-  # lxc-* hosts pre-seed their SSH host key at build time (see
-  # modules/platforms/lxc.nix) so sops-nix's .sops.yaml recipient matches on
-  # first boot -- without it, secrets permanently fail to decrypt (see that
-  # file's comment for the confirmed failure). That requires --impure plus
-  # NIXOS_HOST_KEYS_DIR pointing at the repo's host-keys/ dir, same pattern
-  # docs/auto-installer.md uses for the installer ISO. A function, not a
-  # shellAlias, since the target name has to interpolate into the middle of
-  # the flake attribute path, not just append after it. Must be run from the
-  # repo root, same as every other host-keys/ command in this repo.
-  buildImageFn = ''
-    buildImage() {
-      if [ -z "$1" ]; then
-        echo "usage: buildImage <flake-target>  (e.g. lxc-docker)" >&2
-        return 1
-      fi
-      NIXOS_HOST_KEYS_DIR="$(pwd)/host-keys" nix build --impure \
-        ".#nixosConfigurations.$1.config.system.build.tarball"
-    }
-  '';
-in
 {
-  programs.bash = {
-    enable = true;
-    shellAliases = {
-      "Switch-nix" = mySwitchCmd;
-      "Test-nix" = myTestCmd;
-    };
-    initExtra = buildImageFn;
-  };
+  # Switch-nix, Test-nix, and buildImage are defined system-wide in
+  # modules/common/configuration.nix so all users (including IPA accounts)
+  # get them. Add any Home-Manager-only per-user shell config here.
 }
@@ -1,5 +1,29 @@
 { config, lib, pkgs, vars, ... }:

+let
+  switchCmd = ''
+    sudo nixos-rebuild switch \
+      --no-write-lock-file \
+      --refresh \
+      --flake git+https://${vars.lanDomain}/beatzaplenty/nixos.git#$(cat /etc/flake-target)
+  '';
+  testCmd = ''
+    sudo nixos-rebuild test \
+      --no-write-lock-file \
+      --refresh \
+      --flake git+https://${vars.lanDomain}/beatzaplenty/nixos.git#$(cat /etc/flake-target)
+  '';
+  buildImageFn = ''
+    buildImage() {
+      if [ -z "$1" ]; then
+        echo "usage: buildImage <flake-target>  (e.g. lxc-docker)" >&2
+        return 1
+      fi
+      NIXOS_HOST_KEYS_DIR="$(pwd)/host-keys" nix build --impure \
+        ".#nixosConfigurations.$1.config.system.build.tarball"
+    }
+  '';
+in
 {
  imports =
    [
@@ -8,6 +32,16 @@
      ./set-locale.nix
      ../ipa/client.nix
    ];
+
+  # System-wide shell config so all users (including IPA accounts) get the
+  # same management aliases as the local nixos user's Home Manager provides.
+  programs.bash = {
+    shellAliases = {
+      "Switch-nix" = switchCmd;
+      "Test-nix" = testCmd;
+    };
+    interactiveShellInit = buildImageFn;
+  };
  # Use the GRUB 2 boot loader.
  # boot.loader.grub.enable = true;
  #boot.loader.grub.device = "/dev/sda"; # or "nodev" for efi only
@@ -19,7 +19,7 @@
 #        sops -e --input-type binary -i secrets/<host>.keytab
 #   d. Commit secrets/<host>.keytab and the updated .sops.yaml, then deploy.
 #
-# vars dependencies: homeDomain, ipaServer, domainControllerIp
+# vars dependencies: homeDomain, ipaServer, domainControllerIp, ipaUser

 { config, lib, pkgs, vars, ... }:

@@ -41,10 +41,10 @@ lib.mkIf enabled {
  security.ipa = {
    enable = true;
    domain = vars.homeDomain;
-    realm = realm;
+    inherit realm;
    server = vars.ipaServer;
    certificate = caCertPkg;
-    basedn = basedn;
+    inherit basedn;
    ipaHostname = fqdn;
    offlinePasswords = true;
    cacheCredentials = true;
@@ -62,6 +62,11 @@ lib.mkIf enabled {
    "d /usr/local 0755 root root - -"
    "d /usr/local/bin 0755 root root - -"
    "C+ /usr/local/bin/sss_ssh_authorizedkeys 0555 root root - ${pkgs.sssd}/bin/sss_ssh_authorizedkeys"
+    # Pre-create the IPA user's home dir so Home Manager activation succeeds
+    # even before their first login. On a fresh system SSSD may not have
+    # resolved the user yet — tmpfiles warns and skips in that case (non-fatal),
+    # and pam_mkhomedir covers the first-login path as a fallback.
+    "d /home/${vars.ipaUser} 0700 ${vars.ipaUser} ${vars.ipaUser} - -"
  ];

  services.openssh.extraConfig = ''
@@ -86,4 +91,75 @@ lib.mkIf enabled {
    mode = "0600";
    restartUnits = [ "sssd.service" ];
  };
+
+  # security.ipa enables Kerberos (security.krb5) which causes systemd to
+  # start auth-rpcgss-module.service and rpc-gssd.service for Kerberos NFS
+  # authentication. LXC containers can't load the auth_rpcgss kernel module
+  # and don't have /var/lib/nfs/rpc_pipefs, so both services fail.
+  #
+  # The NixOS IPA module already adds a drop-in for auth-rpcgss-module.service
+  # with ConditionPathExists=/etc/krb5.keytab. We use lib.mkForce to win the
+  # text conflict and add ConditionVirtualization=!container alongside it so
+  # the service is skipped (not failed) in containers that do have a keytab.
+  # Same fix for rpc-gssd.service which also fails in containers.
+  systemd.units = lib.mkIf config.boot.isContainer {
+    "auth-rpcgss-module.service" = {
+      overrideStrategy = "asDropinIfExists";
+      text = lib.mkForce ''
+        [Unit]
+        ConditionPathExists=
+        ConditionPathExists=/etc/krb5.keytab
+        ConditionVirtualization=!container
+      '';
+    };
+    # rpc-gssd also has ConditionPathExists from the NixOS IPA module (and an
+    # X-Restart-Triggers store path from systemd.nix). Use mkForce to win;
+    # omit X-Restart-Triggers since this service is skipped in containers anyway.
+    "rpc-gssd.service" = {
+      overrideStrategy = "asDropinIfExists";
+      text = lib.mkForce ''
+        [Unit]
+        ConditionPathExists=
+        ConditionPathExists=/etc/krb5.keytab
+        ConditionVirtualization=!container
+      '';
+    };
+  };
+
+  # Home Manager config for the IPA primary user, applied on every enrolled
+  # host. Manages what IPA doesn't: dotfiles, user-scoped packages, session
+  # variables. Switch-nix/Test-nix/buildImage are system-wide (configuration.nix)
+  # so they don't need to be repeated here.
+  # NixOS requires isNormalUser/isSystemUser + group on any entry in
+  # users.users. HM with useUserPackages = true (set in flake.nix) adds a stub
+  # entry for each HM user so it can install packages to
+  # /etc/profiles/per-user/<name>/. This definition satisfies those assertions.
+  # With security.ipa setting "passwd: sss files" in nsswitch, SSSD's IPA entry
+  # takes priority for NSS lookups — this local stub is only a fallback when
+  # SSSD is unreachable (at which point auth fails anyway).
+  users.users.${vars.ipaUser} = {
+    isNormalUser = true;
+    group = "users";
+    createHome = false;
+  };
+
+  # Home Manager config for the IPA primary user, applied on every enrolled
+  # host. Manages what IPA doesn't: dotfiles, user-scoped packages, session
+  # variables. Switch-nix/Test-nix/buildImage are system-wide (configuration.nix)
+  # so they don't need to be repeated here.
+  #
+  # homeDirectory uses mkForce because HM's NixOS integration module sets it to
+  # "/var/empty" for users not found in config.users.users at eval time (SSSD
+  # users aren't visible there).
+  home-manager.users.${vars.ipaUser} = { pkgs, ... }: {
+    home = {
+      username = vars.ipaUser;
+      homeDirectory = lib.mkForce "/home/${vars.ipaUser}";
+      stateVersion = "26.05";
+      packages = with pkgs; [ tmux sshfs ];
+      sessionVariables.EDITOR = "nano";
+    };
+    programs.home-manager.enable = true;
+    programs.bash.enable = true;
+  };
 }
@@ -0,0 +1,26 @@
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@@ -0,0 +1,30 @@
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+		"age": [
+			{
+				"enc": "-----BEGIN AGE ENCRYPTED FILE-----\nYWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBOZVpRYmNMQ1E4ZlFXMDVq\nbW1FcnYzWTBHQmdhSjlsZUtZK3dzNUZjY1FvCkV4VXU4MTcwNVZoZUpVVS9JeHE5\nbGk3UzE3YmpZQ1JISHV0RHJqSG9ZNXcKLS0tIHhBdnIvMjJkeWlVRE9Fb0FhWjNX\nUjBVWDltK2w0akkwOTJaTGNSWWNrRXMKqZRNnHiXvn1QBoSGdABp7vOqNlsEN6Xr\nDp3NByXow6PuRuWvQXHzd+WC+ADkwNaaiT6TUrbZcd/Pl8Ges9kcZg==\n-----END AGE ENCRYPTED FILE-----\n",
+				"recipient": "age1njap586hc0q43kr03g6c8eqhdsmk8zcafkl3f83xwlc2gqhlmfgs4tmwad"
+			},
+			{
+				"enc": "-----BEGIN AGE ENCRYPTED FILE-----\nYWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSA2VFBxc2ZMUFp0YkJhVFhW\nc0ZNbnJUcGtkT1VLR2YrVGhRRFVTZFlyZXlJCmVnblNBNGxIdHh4Q0IweWR1b0dq\nRWFyOURuWkdkRE1RTnJRMEpXdk9HaUUKLS0tIFhKV3FoWW1zRk1pMlhuWWlhV2E5\nQzJTRHAyc0JtSjd2NHlJODZVbndaVDgKFA4565X/4FqNq/fZDZTg81/55hZi4c7b\nTti2AnyE3OcY/kurXJFHRinVMqURQf1fx9MxqUYRitiCz4qe5zFF+A==\n-----END AGE ENCRYPTED FILE-----\n",
+				"recipient": "age1sweerhrga9yf8x6sv0apz4ed4g48rnlcq34rpv20t0rcelwgpgeqwvndzz"
+			},
+			{
+				"enc": "-----BEGIN AGE ENCRYPTED FILE-----\nYWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSAwRWlKTFNocnBRN01pZ0hm\na3pyRUkxMWM3dE1iTkZZcGRYUFcyb1RDb2h3Ckt4blpGZHBjcnZ4SVE5UnF4cmY4\nWW0rZG5wUkZINVk5a2lmSzN2L3JJY1kKLS0tIExpWGlBRFZJVGpGbFhxRE5ZYjBo\nQVliTlFIZ1U5dE9xbDhHMUtxenpBSm8KY6sIFEfK8p+70IXsC4Jwb9Lm/pd9+V6K\n4JAzGrpA6mAuIwwSNnbdcA5j8FmBhCpK6nLBWmFhGm9Y+MRTaM7Jrw==\n-----END AGE ENCRYPTED FILE-----\n",
+				"recipient": "age1nruncs4l0ufk7yuc4des8p99c0alfndl0lhsws8tycl5pplfp56s30af5f"
+			},
+			{
+				"enc": "-----BEGIN AGE ENCRYPTED FILE-----\nYWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBoV0pIUXlyOFFTUHVTdllu\neG10VENOYWl5Wk0ycnpLUytTbnlrQ25pMkFRCnhyRU5xWW9vQXJJOHdFMGZqMkR1\nSktqT3lOdVVPRUN4YTlveGp0NXpqd0kKLS0tIGRaTktra0ZtSVpzSHBrY3VSSUph\nRVRZOSsxTTNmMmltMlJnVy9oT2VEWU0Krxf49B1BsrWn05fqg+cZ0k0PtfJJNfn0\nUL44RUWXWbK2igQHaIct9DfYe7DEonBJeROuxDYm8g7yNOv15S+P4Q==\n-----END AGE ENCRYPTED FILE-----\n",
+				"recipient": "age1529taqdwr6t0w7cvzmty0d5y5593wffl0krt48j6uc4u39k56g2qf6ywtp"
+			}
+		],
+		"lastmodified": "2026-07-28T01:44:26Z",
+		"mac": "ENC[AES256_GCM,data:eyOSn03dzHSgkshPzLVwc95382eEFaDQarHs9l83dtcsb1Ui9CjkKipl2DVSUb6bdMUH1qKYmXqJhwFnAZbFZFjT4VTKtutNtM+OkhVXfT+fJs+1+u7k+ZUYFL9HuxKA6AWpwX3eJ8vmJDJZaAayJbm4PRzOyJywvKeneQqdUS0=,iv:QRKltR4qzVofo/Elt2Us/lrHlD7BenX605X31x+Ng78=,tag:SZ97CcfgMJeu3yqNk8Y/cA==,type:str]",
+		"version": "3.13.2"
+	}
+}
@@ -0,0 +1,18 @@
+{
+	"data": "ENC[AES256_GCM,data:QvViw/s1N7eIN3CoD27llEjriuSrohOou4Cv310nigcW8xMnA2SDN2id3H3AoKii1JlJ+qWpKn+gUmt5HOM0UlbeNe3os2RVwiX38O7eN9xFH9F5kA3TFs6Umqq3EoI586PwIVmB2LyxDnTeEEXVd7v5PFkBcfu7u8YIcNF7lpcj+6rOyHMB8uxPhrGep3yiKawFd9c9wWD0hlSSatV5tMHA1qmdK8VmDbCU/iuGwIoMzN1eZwGAXzG6LkCA63bUfdxU6yGuTboD+kN2Wbo+GZB0EACmiZoofl2wqlXuiw6qwTvlXkyauc9O5EG//PUkIECzDwiXcX+qSOM9DIBlZNth4ebhtic/PskyF09etL/gICz5YvV4ph5lyrWHq41KxljSU7QXOkGhzagruuMrYzhZb35wFH4Tie1ee2DXbGhreJr8V3Zse/zTMaD+iM57V8bvNcarTzOFXyKfp7Y=,iv:XBPhj2wT0k/yRCRHU4d+BQA/k00ZHWSKOucnZ5+PGys=,tag:Nh5MOxZIUXAYVZY5SZh/JA==,type:str]",
+	"sops": {
+		"age": [
+			{
+				"enc": "-----BEGIN AGE ENCRYPTED FILE-----\nYWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSA0aUtETXlBMmRlTC9vK3NF\nRW4zS1FrSmo1dDN0OGN4SmV5ODd5MTRVejFJCnpPQkM2MVJ5WFlYRW1NVjduV1hv\nUWUzY0hHV05LV1BROVZVUlM2NldsTlEKLS0tIHFsTzI2SVZzYUtJWTM0MmFiUlVQ\neHEvUXgzc1pxSU1OZFo0cXhSZDdGUVEKpLVfzQEnntluUGsblnkHZJ9Jezu8tFte\nxEoV96GVHxUca6TFWpTLMqdR7NtuQGCkx295W3i1tkp58DP1OzRTUA==\n-----END AGE ENCRYPTED FILE-----\n",
+				"recipient": "age1njap586hc0q43kr03g6c8eqhdsmk8zcafkl3f83xwlc2gqhlmfgs4tmwad"
+			},
+			{
+				"enc": "-----BEGIN AGE ENCRYPTED FILE-----\nYWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSA4ZW5ybVBvTkxibWJMWGRL\nZ1lnWEkxZ3l6d0FWbmxMY2VsTVlzOHJJM3owClNYd3BlQi9pL1lIdzJmekJUVEVi\ncWhSK3ZkZEMyeTNoZlpTT0NMUXZFWVEKLS0tIHVkVlhmQXdRQktTK3J5dXZ4aTNt\ncUw3WCt5dXJhTkdUbVpmeWoxWkoxNnMKj4XtdwmgFVOiVsIJs2Du7QJ09A9tv/Lf\nkFOq8y4tlZe0nCwRjq43sVz7hdCTdQ0rsaWjBGY90LLkJbOA+f+Wrw==\n-----END AGE ENCRYPTED FILE-----\n",
+				"recipient": "age16kqfmvz4e23hmdlqresnyw69ej604s320mmd49h4hm3fhqchtgyqrws0k2"
+			}
+		],
+		"lastmodified": "2026-07-28T01:44:30Z",
+		"mac": "ENC[AES256_GCM,data:zR2WLWX7NaHA15gi4kX0jDvzUIe9jtz5bMCAggbPW+IXOEedPrddAHZ8OfPErVMfx8O1pJKkAKSzoPTAbEle54FisSLMHXp8fI0297MByJrF9pOsMFpVcDy/L4Q+pBzmB7aS9r7+u7KRVVTZT3QwG1rFWZaDs5dFTP80RhtCbWQ=,iv:ZzPoO+h7ebS+jsSH7tWMx6QK8umpa2/HFQmx9dnJN+Y=,tag:vG9+ifxw4HaBE6YsmOwXcg==,type:str]",
+		"version": "3.13.2"
+	}
+}
@@ -80,6 +80,11 @@
  # one-line change.
  primaryUser = "nixos";

+  # Primary IPA/domain user. Home Manager is configured for this user on every
+  # IPA-enrolled host (see modules/ipa/client.nix) to manage the environment
+  # that IPA itself doesn't cover: dotfiles, user packages, session variables.
+  ipaUser = "wayne";
+
  # HA file server cluster
  # LAN IPs (vmbr0 / ens18) — client-facing: iSCSI initiators, NFS, management.
  # Storage IPs (vmbr1 / ens19) — isolated internal bridge, used for DRBD
Author	SHA1	Message	Date
beatzaplenty	1fc6e63178	Merge pull request 'Worktree ipa lxc kerberos fix' (#85 ) from worktree-ipa-lxc-kerberos-fix into main Check NixOS configurations / eval-hosts (push) Failing after 33m33s Details Reviewed-on: #85	2026-07-28 02:55:20 +00:00
beatzaplentyandClaude Sonnet 4.6	3589fc31d7	feat(ipa): add Home Manager config for IPA primary user Check NixOS configurations / eval-hosts (pull_request) Failing after 40m50s Details Any enrolled host now automatically gets a Home Manager profile for the IPA primary user (vars.ipaUser = "wayne"), covering what IPA doesn't: dotfiles, user-scoped packages (tmux, sshfs), and EDITOR variable. The home directory is pre-created by systemd-tmpfiles so HM activation succeeds on steady-state systems before first login; pam_mkhomedir remains as a fallback for fresh deploys where SSSD hasn't cached the user yet. A minimal users.users stub satisfies NixOS's assertion requirements (isNormalUser + group) that arise because home-manager.useUserPackages creates a users.users entry to install packages to /etc/profiles/per-user/. The stub is shadowed by SSSD at runtime (security.ipa sets passwd: sss files). Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>	2026-07-28 12:53:10 +10:00
beatzaplentyandClaude Sonnet 4.6	89746718a9	feat(shell): make Switch-nix/Test-nix/buildImage system-wide IPA users (e.g. wayne@) don't get Home Manager so the aliases defined in aliases.nix were invisible to them. Move Switch-nix, Test-nix, and buildImage into programs.bash in configuration.nix so every user on every host gets them via /etc/bashrc. Stub out aliases.nix for future per-user HM-only additions. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>	2026-07-28 12:32:33 +10:00
beatzaplenty	232d0e7c40	Merge pull request 'fix(ipa): suppress Kerberos NFS services in LXC containers' (#84 ) from worktree-ipa-lxc-kerberos-fix into main Check NixOS configurations / eval-hosts (push) Successful in 10m32s Details Reviewed-on: #84	2026-07-28 02:13:47 +00:00
beatzaplentyandClaude Sonnet 4.6	0b60d3ff2d	fix(ipa): suppress Kerberos NFS services in LXC containers Check NixOS configurations / eval-hosts (pull_request) Successful in 10m30s Details The NixOS IPA module adds ConditionPathExists=/etc/krb5.keytab drop-ins for auth-rpcgss-module.service and rpc-gssd.service via systemd.units. In LXC containers with keytabs those conditions pass, the services start, and then fail because auth_rpcgss can't be loaded and rpc_pipefs doesn't exist in the container namespace. Use lib.mkForce on our systemd.units text to win the conflict with NixOS's existing definitions, and include ConditionVirtualization=!container alongside the ConditionPathExists conditions so the services are skipped (inactive, not failed) in containers that have a keytab. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>	2026-07-28 12:07:58 +10:00
beatzaplenty	ff82e8885d	added remaining ipa keytabs Check NixOS configurations / eval-hosts (push) Successful in 10m22s Details	2026-07-28 11:45:06 +10:00
beatzaplenty	9a7411d1dd	Merge pull request 'Worktree ipa common config' (#83 ) from worktree-ipa-common-config into main Check NixOS configurations / eval-hosts (push) Failing after 9m46s Details Reviewed-on: #83	2026-07-28 01:43:53 +00:00