feat(kubernetes): add keycloak

kubernetes/poketwo/keycloak.nix

@@ -0,0 +1,210 @@
+{ transpire, ... }:
+
+let
+  downloadResources = ''  
+    mkdir -p /keycloak/providers /keycloak/themes/keywind \
+    && wget -nc -O /keycloak/providers/keycloak-discord-0.4.0.jar \
+      https://github.com/wadahiro/keycloak-discord/releases/download/v0.4.1/keycloak-discord-0.4.1.jar \
+    && (git -C /keycloak/themes/keywind pull || git clone https://github.com/lukin/keywind /keycloak/themes/keywind)
+  '';
+
+  keycloakConfigCli = {
+    realm = "poketwo";
+    displayName = "Pokétwo";
+    ssoSessionIdleTimeout = 2592000;
+    ssoSessionMaxLifespan = 2592000;
+    offlineSessionIdleTimeout = 2592000;
+    enabled = true;
+    sslRequired = "all";
+    registrationAllowed = false;
+    loginTheme = "keywind";
+    accountTheme = "keycloak.v2";
+    adminTheme = "keycloak.v2";
+    emailTheme = "keycloak";
+    clients = [
+      {
+        clientId = "google.com";
+        name = "Google Workspace";
+        clientAuthenticatorType = "client-secret";
+        redirectUris = [ "https://www.google.com/*" ];
+        protocol = "saml";
+        enabled = true;
+        attributes = {
+          saml_name_id_format = "email";
+          "saml.server.signature" = "false";
+          "saml.client.signature" = "false";
+          "saml.assertion.signature" = "true";
+        };
+      }
+      {
+        clientId = "guiduck";
+        name = "Guiduck";
+        clientAuthenticatorType = "client-secret";
+        publicClient = false;
+        protocol = "openid-connect";
+        standardFlowEnabled = false;
+        enabled = true;
+      }
+      {
+        clientId = "outline.poketwo.io";
+        name = "Outline";
+        redirectUris = [ "https://outline.poketwo.io/auth/oidc.callback" ];
+        clientAuthenticatorType = "client-secret";
+        publicClient = false;
+        protocol = "openid-connect";
+        enabled = true;
+      }
+    ];
+
+    # Override this to turn creating users off
+    authenticationFlows = [
+      {
+        alias = "User creation or linking";
+        description = "Flow for the existing/non-existing user alternatives";
+        providerId = "basic-flow";
+        topLevel = false;
+        builtIn = true;
+        authenticationExecutions = [
+          {
+            authenticatorConfig = "create unique user config";
+            authenticator = "idp-create-user-if-unique";
+            authenticatorFlow = false;
+            requirement = "DISABLED";
+            priority = 10;
+            autheticatorFlow = false;
+            userSetupAllowed = false;
+          }
+          {
+            authenticatorFlow = true;
+            requirement = "ALTERNATIVE";
+            priority = 20;
+            autheticatorFlow = true;
+            flowAlias = "Handle Existing Account";
+            userSetupAllowed = false;
+          }
+        ];
+      }
+      {
+        alias = "first broker login";
+        description = "Actions taken after first broker login with identity provider account, which is not yet linked to any Keycloak account";
+        providerId = "basic-flow";
+        topLevel = true;
+        builtIn = true;
+        authenticationExecutions = [
+          {
+            authenticatorConfig = "review profile config";
+            authenticator = "idp-review-profile";
+            authenticatorFlow = false;
+            requirement = "DISABLED";
+            priority = 10;
+            autheticatorFlow = false;
+            userSetupAllowed = false;
+          }
+          {
+            authenticatorFlow = true;
+            requirement = "REQUIRED";
+            priority = 20;
+            autheticatorFlow = true;
+            flowAlias = "User creation or linking";
+            userSetupAllowed = false;
+          }
+        ];
+      }
+    ];
+  };
+in
+{
+  namespaces.keycloak = {
+    helmReleases.keycloak = {
+      chart = transpire.fetchFromHelm {
+        repo = "https://charts.bitnami.com/bitnami";
+        name = "keycloak";
+        version = "21.6.1";
+        sha256 = "0K1kGpPLchgevJ69KUwoLHrtE1vdoy3m8RZNMIKZjZ0=";
+      };
+
+      values = {
+        auth.existingSecret = "keycloak-auth";
+        production = true;
+        proxy = "edge";
+        replicaCount = 1;
+        metrics.enabled = true;
+        postgresql.enabled = false;
+
+        initContainers = [{
+          name = "download-resources";
+          image = "alpine/git";
+          command = [ "/bin/sh" "-c" ];
+          args = [ downloadResources ];
+          volumeMounts = [{ name = "keycloak"; mountPath = "/keycloak"; }];
+        }];
+
+        ingress = {
+          enabled = true;
+          annotations."cert-manager.io/cluster-issuer" = "letsencrypt";
+          hostname = "auth-dev.poketwo.io";
+          tls = true;
+        };
+
+        externalDatabase = {
+          host = "keycloak-postgres-rw";
+          port = 5432;
+          user = "keycloak";
+          database = "keycloak";
+          existingSecret = "keycloak-postgres-app";
+          existingSecretPasswordKey = "password";
+        };
+
+        extraVolumes = [{
+          name = "keycloak";
+          persistentVolumeClaim = { claimName = "keycloak"; };
+        }];
+
+        extraVolumeMounts = [
+          {
+            mountPath = "/opt/bitnami/keycloak/providers/keycloak-discord-0.4.0.jar";
+            name = "keycloak";
+            subPath = "providers/keycloak-discord-0.4.0.jar";
+          }
+          {
+            mountPath = "/opt/bitnami/keycloak/themes/keywind";
+            name = "keycloak";
+            subPath = "themes/keywind/theme/keywind";
+          }
+        ];
+
+        keycloakConfigCli = {
+          enabled = true;
+          existingConfigmap = "keycloak-config-cli";
+          cleanupAfterFinished = {
+            enabled = true;
+            seconds = 0;
+          };
+        };
+      };
+    };
+
+    resources = {
+      "postgresql.cnpg.io/v1".Cluster.keycloak-postgres.spec = {
+        instances = 3;
+        bootstrap.initdb.database = "keycloak";
+        storage.size = "8Gi";
+      };
+
+      v1.PersistentVolumeClaim.keycloak.spec = {
+        accessModes = [ "ReadWriteOnce" ];
+        resources.requests.storage = "2Gi";
+      };
+
+      v1.Secret.keycloak-auth.stringData = {
+        admin-password = "";
+      };
+
+      v1.ConfigMap.keycloak-config-cli.data = {
+        configuration = builtins.toJSON keycloakConfigCli;
+      };
+    };
+  };
+}
+
+