Expose authenticated Loki push endpoint for tsunagi logs

k8s-ng/core/keycloak/auth-proxy.yaml

@@ -25,7 +25,7 @@ spec:
         homelab.hexor.cy/exposure: external
       containers:
         - name: auth-proxy
-          image: ultradesu/rsauth2-proxy:latest
+          image: ultradesu/rsauth2-proxy:v0.1.3
           ports:
             - containerPort: 8080
               name: http

k8s-ng/core/prom-stack/kustomization.yaml

@@ -6,6 +6,7 @@ resources:
   - external-secrets.yaml
   - alertmanager-config.yaml
   - ingress.yaml
+  - loki-ingress.yaml
   - service-monitors.yaml
   - dashboards/auth-proxy-dashboard-cm.yaml
   - dashboards/furumi-dashboard-cm.yaml

k8s-ng/core/prom-stack/loki-ingress.yaml

@@ -0,0 +1,48 @@
+apiVersion: traefik.io/v1alpha1
+kind: Middleware
+metadata:
+  name: loki-machine-auth
+spec:
+  forwardAuth:
+    address: http://auth-proxy.keycloak.svc:80/auth
+    trustForwardHeader: false
+---
+# Do not pass the Keycloak client secret through to Loki after ForwardAuth.
+apiVersion: traefik.io/v1alpha1
+kind: Middleware
+metadata:
+  name: loki-strip-authorization
+spec:
+  headers:
+    customRequestHeaders:
+      Authorization: ""
+---
+apiVersion: traefik.io/v1alpha1
+kind: IngressRoute
+metadata:
+  name: loki-push
+spec:
+  entryPoints: [websecure]
+  routes:
+    - match: Host(`loki.hexor.cy`) && Path(`/loki/api/v1/push`) && Method(`POST`)
+      kind: Rule
+      middlewares:
+        - name: loki-machine-auth
+        - name: loki-strip-authorization
+      services:
+        - name: loki-gateway
+          port: 80
+  tls:
+    secretName: loki-push-tls
+---
+apiVersion: cert-manager.io/v1
+kind: Certificate
+metadata:
+  name: loki-push-tls
+spec:
+  secretName: loki-push-tls
+  issuerRef:
+    name: letsencrypt
+    kind: ClusterIssuer
+  dnsNames:
+    - loki.hexor.cy

k8s-ng/core/prom-stack/loki-values.yaml

@@ -81,7 +81,7 @@ sidecar:
 gateway:
   enabled: true
   # Gateway replicas can run on either external core node; Loki storage stays on music.
-  replicas: 1
+  replicas: 2
   nodeSelector:
     homelab.hexor.cy/pool: core
     homelab.hexor.cy/exposure: external
@@ -97,7 +97,7 @@ gateway:
       cpu: 500m
       memory: 256Mi
   podDisruptionBudget:
-    enabled: false
+    enabled: true
 
 test:
   enabled: false