ansible: Deploy ARA

[ARA Records Ansible][0] is a results storage system for Ansible.  It
provides a convenient UI for tracking Ansible playbooks and tasks.  The
data are populated by an Ansible callback plugin.

ARA is a fairly simple Python+Django application.  It needs a database
to store Ansible results, so we've connected it to the main PostgreSQL
database and configured it to connect and authenticate using mTLS.

Rather than mess with managing and distributing a static password for
ARA clients, I've configured Autheliad to allow anonymous access to
post data to the ARA API from within the private network or the
Kubernetes cluster.  Access to the web UI does require authentication.

[0]: https://ara.recordsansible.org/

ansible/.gitignore

@@ -0,0 +1 @@
+ara/.secrets.toml

ansible/ara.yaml

@@ -0,0 +1,87 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: ara
+  labels: &labels
+    app.kubernetes.io/name: ara
+    app.kubernetes.io/component: ara
+spec:
+  selector: *labels
+  type: ClusterIP
+  ports:
+  - name: http
+    port: 8000
+    targetPort: 8000
+
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: ara
+  labels: &labels
+    app.kubernetes.io/name: ara
+    app.kubernetes.io/component: ara
+spec:
+  selector:
+    matchLabels: *labels
+  template:
+    metadata:
+      labels: *labels
+    spec:
+      enableServiceLinks: false
+      containers:
+      - name: ara-api
+        image: quay.io/recordsansible/ara-api
+        env:
+        - name: ARA_BASE_DIR
+          value: /etc/ara
+        - name: ARA_SETTINGS
+          value: /etc/ara/settings.toml
+        - name: SECRETS_FOR_DYNACONF
+          value: /etc/ara/.secrets.toml
+        ports:
+        - containerPort: 8000
+          name: http
+        readinessProbe: &probe
+          httpGet:
+            port: 8000
+            path: /api/
+            httpHeaders:
+            - name: Host
+              value: ara.ansible.pyrocufflink.blue
+          failureThreshold: 3
+          periodSeconds: 60
+          successThreshold: 1
+          timeoutSeconds: 5
+        startupProbe:
+          <<: *probe
+          failureThreshold: 30
+          initialDelaySeconds: 1
+          periodSeconds: 1
+          timeoutSeconds: 1
+        volumeMounts:
+        - mountPath: /etc/ara/settings.toml
+          name: config
+          subPath: settings.toml
+          readOnly: true
+        - mountPath: /etc/ara/.secrets.toml
+          name: secrets
+          subPath: .secrets.toml
+          readOnly: true
+        - mountPath: /tmp
+          name: tmp
+          subPath: tmp
+      securityContext:
+        runAsNonRoot: true
+        runAsUser: 7653
+        runAsGroup: 7653
+      volumes:
+      - name: config
+        configMap:
+          name: ara
+      - name: secrets
+        secret:
+          secretName: ara
+      - name: tmp
+        emptyDir:
+          medium: Memory

ansible/ara/settings.toml

@@ -0,0 +1,38 @@
+[default]
+ALLOWED_HOSTS = [
+    'ara.ansible.pyrocufflink.blue',
+]
+LOG_LEVEL = 'INFO'
+TIME_ZONE = 'UTC'
+
+EXTERNAL_AUTH = true
+READ_LOGIN_REQUIRED = false
+WRITE_LOGIN_REQUIRED = false
+
+DATABASE_ENGINE = 'django.db.backends.postgresql'
+DATABASE_HOST = 'postgresql.pyrocufflink.blue'
+DATABASE_NAME = 'ara'
+DATABASE_USER = 'ara'
+
+[default.DATABASE_OPTIONS]
+sslmode = 'verify-full'
+sslcert = '/run/secrets/ara/postgresql/tls.crt'
+sslkey = '/run/secrets/ara/postgresql/tls.key'
+sslrootcert = '/run/dch-ca/dch-root-ca.crt'
+
+[default.LOGGING]
+version = 1
+disable_existing_loggers = false
+
+[default.LOGGING.formatters.normal]
+format = '%(levelname)s %(name)s: %(message)s'
+
+[default.LOGGING.handlers.console]
+class = 'logging.StreamHandler'
+formatter = 'normal'
+level = 'INFO'
+
+[default.LOGGING.loggers.ara]
+handlers = ['console']
+level = 'INFO'
+propagate = false

ansible/ingress.yaml

@@ -0,0 +1,32 @@
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: ara
+  labels:
+    app.kubernetes.io/name: ara
+    app.kubernetes.io/component: ara
+  annotations:
+    cert-manager.io/cluster-issuer: dch-ca
+    nginx.ingress.kubernetes.io/proxy-buffer-size: "8k"
+    nginx.ingress.kubernetes.io/auth-method: GET
+    nginx.ingress.kubernetes.io/auth-url: http://authelia.authelia.svc.cluster.local:9091/api/verify
+    nginx.ingress.kubernetes.io/auth-signin: https://auth.pyrocufflink.blue/?rm=$request_method
+    nginx.ingress.kubernetes.io/auth-snippet: |
+      proxy_set_header X-Forwarded-Method $request_method;
+spec:
+  ingressClassName: nginx
+  tls:
+  - hosts:
+    - ara.ansible.pyrocufflink.blue
+    secretName: ara-cert
+  rules:
+  - host: ara.ansible.pyrocufflink.blue
+    http:
+      paths:
+      - path: /
+        pathType: Prefix
+        backend:
+          service:
+            name: ara
+            port:
+              name: http

ansible/kustomization.yaml

@@ -0,0 +1,58 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+labels:
+- pairs:
+    app.kubernetes.io/instance: ansible
+  includeSelectors: true
+  includeTemplates: true
+- pairs:
+    app.kubernetes.io/part-of: ansible
+
+namespace: ansible
+
+resources:
+- ../dch-root-ca
+- secrets.yaml
+- namespace.yaml
+- ara.yaml
+- postgres-cert.yaml
+- ingress.yaml
+
+configMapGenerator:
+- name: ara
+  files:
+  - ara/settings.toml
+  options:
+    labels:
+      app.kubernetes.io/name: ara
+
+patches:
+- patch: |-
+    apiVersion: apps/v1
+    kind: Deployment
+    metadata:
+      name: ara
+    spec:
+      template:
+        spec:
+          containers:
+          - name: ara-api
+            volumeMounts:
+            - mountPath: /run/dch-ca/dch-root-ca.crt
+              name: dch-root-ca
+              subPath: dch-root-ca.crt
+              readOnly: true
+            - mountPath: /run/secrets/ara/postgresql
+              name: postgresql-cert
+              readOnly: true
+          securityContext:
+            fsGroup: 7653
+          volumes:
+          - name: postgresql-cert
+            secret:
+              secretName: ara-postgres-cert
+              defaultMode: 0640
+          - name: dch-root-ca
+            configMap:
+              name: dch-root-ca

ansible/namespace.yaml

@@ -0,0 +1,6 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: ansible
+  labels:
+    app.kubernetes.io/name: ansible

ansible/postgres-cert.yaml

@@ -0,0 +1,12 @@
+apiVersion: cert-manager.io/v1
+kind: Certificate
+metadata:
+  name: ara-postgres-cert
+spec:
+  commonName: ara
+  privateKey:
+    algorithm: ECDSA
+  secretName: ara-postgres-cert
+  issuerRef:
+    name: postgresql-ca
+    kind: ClusterIssuer

ansible/secrets.yaml

@@ -0,0 +1,19 @@
+---
+apiVersion: bitnami.com/v1alpha1
+kind: SealedSecret
+metadata:
+  name: ara
+  namespace: ansible
+  labels:
+    app.kubernetes.io/name: ara
+    app.kubernetes.io/component: ara
+spec:
+  encryptedData:
+    .secrets.toml: 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
+  template:
+    metadata:
+      name: ara
+      namespace: ansible
+      labels:
+        app.kubernetes.io/name: ara
+        app.kubernetes.io/component: ara

authelia/configuration.yml

@@ -5,6 +5,9 @@ access_control:
     networks:
     - 172.30.0.0/26
     - 172.31.1.0/24
+  - name: cluster
+    networks:
+    - 10.149.0.0/16
   rules:
   - domain: paperless.pyrocufflink.blue
     policy: two_factor
@@ -54,6 +57,16 @@ access_control:
     resources:
     - '^/submit/.*'
     policy: bypass
+  - domain: ara.ansible.pyrocufflink.blue
+    networks:
+    - internal
+    - cluster
+    resources:
+    - '^/api/.*'
+    methods:
+    - POST
+    - PATCH
+    policy: bypass
 
 authentication_backend:
   ldap: