From 9958d86f5fdf312eac0420934cdb0d923ccad215 Mon Sep 17 00:00:00 2001
From: Joseph Hanson <joe@veri.dev>
Date: Sun, 14 Jan 2024 22:34:59 -0600
Subject: [PATCH] Adding internal nginx.

---
 .../external-dns/app/hsn-dev/helmrelease.yaml |   2 +-
 .../ingress-nginx/internal/certificate.yaml   |  16 +++
 .../ingress-nginx/internal/helmrelease.yaml   | 108 ++++++++++++++++++
 .../ingress-nginx/internal/kustomization.yaml |   7 ++
 kubernetes/apps/network/ingress-nginx/ks.yaml |  34 +++---
 5 files changed, 149 insertions(+), 18 deletions(-)
 create mode 100644 kubernetes/apps/network/ingress-nginx/internal/certificate.yaml
 create mode 100644 kubernetes/apps/network/ingress-nginx/internal/helmrelease.yaml
 create mode 100644 kubernetes/apps/network/ingress-nginx/internal/kustomization.yaml

diff --git a/kubernetes/apps/network/external-dns/app/hsn-dev/helmrelease.yaml b/kubernetes/apps/network/external-dns/app/hsn-dev/helmrelease.yaml
index f9a78050..998934da 100644
--- a/kubernetes/apps/network/external-dns/app/hsn-dev/helmrelease.yaml
+++ b/kubernetes/apps/network/external-dns/app/hsn-dev/helmrelease.yaml
@@ -47,7 +47,7 @@ spec:
       - --cloudflare-proxied
       - --crd-source-apiversion=externaldns.k8s.io/v1alpha1
       - --crd-source-kind=DNSEndpoint
-      - --ingress-class=external
+      - --ingress-class=external-nginx
       - --txt-owner-id=default
 
     serviceMonitor:
diff --git a/kubernetes/apps/network/ingress-nginx/internal/certificate.yaml b/kubernetes/apps/network/ingress-nginx/internal/certificate.yaml
new file mode 100644
index 00000000..c874b592
--- /dev/null
+++ b/kubernetes/apps/network/ingress-nginx/internal/certificate.yaml
@@ -0,0 +1,16 @@
+---
+# yaml-language-server: $schema=https://ks.hsn.dev/cert-manager.io/certificate_v1.json
+apiVersion: cert-manager.io/v1
+kind: Certificate
+metadata:
+  name: "jahanson-tech"
+  namespace: network
+spec:
+  secretName: "jahanson-tech-tls"
+  issuerRef:
+    name: letsencrypt-cloudflare-production
+    kind: ClusterIssuer
+  commonName: "jahanson.tech"
+  dnsNames:
+    - "jahanson.tech"
+    - "*.jahanson.tech"
diff --git a/kubernetes/apps/network/ingress-nginx/internal/helmrelease.yaml b/kubernetes/apps/network/ingress-nginx/internal/helmrelease.yaml
new file mode 100644
index 00000000..0cc88d9b
--- /dev/null
+++ b/kubernetes/apps/network/ingress-nginx/internal/helmrelease.yaml
@@ -0,0 +1,108 @@
+---
+# yaml-language-server: $schema=https://raw.githubusercontent.com/fluxcd-community/flux2-schemas/main/helmrelease-helm-v2beta2.json
+apiVersion: helm.toolkit.fluxcd.io/v2beta2
+kind: HelmRelease
+metadata:
+  name: nginx-internal
+spec:
+  interval: 30m
+  chart:
+    spec:
+      chart: ingress-nginx
+      version: 4.9.0
+      sourceRef:
+        kind: HelmRepository
+        name: ingress-nginx
+        namespace: flux-system
+      interval: 30m
+  values:
+    fullnameOverride: nginx-internal
+
+    controller:
+      replicaCount: 3
+
+      updateStrategy:
+        type: RollingUpdate
+
+      allowSnippetAnnotations: true
+      enableAnnotationValidations: true
+
+      service:
+        enabled: true
+        type: LoadBalancer
+        annotations:
+          external-dns.alpha.kubernetes.io/hostname: "internal.jahanson.tech"
+          io.cilium/lb-ipam-ips: "10.45.0.3"
+        externalTrafficPolicy: Cluster
+
+      publishService:
+        enabled: true
+
+      ingressClassResource:
+        name: internal-nginx
+        default: true
+        controllerValue: k8s.io/ingress-nginx-internal
+
+      admissionWebhooks:
+        objectSelector:
+          matchExpressions:
+            - key: ingress-class
+              operator: In
+              values:
+                - internal-nginx
+
+      config:
+        block-user-agents: "GPTBot,~*GPTBot*,ChatGPT-User,~*ChatGPT-User*,Google-Extended,~*Google-Extended*,CCBot,~*CCBot*,Omgilibot,~*Omgilibot*,FacebookBot,~*FacebookBot*" # taken from https://github.com/superseriousbusiness/gotosocial/blob/main/internal/web/robots.go
+        client-header-timeout: 120
+        client-body-buffer-size: "100M"
+        client-body-timeout: 120
+        enable-brotli: "true"
+        enable-ocsp: "true"
+        enable-real-ip: "true"
+        hide-headers: Server,X-Powered-By
+        hsts-max-age: "31449600"
+        keep-alive: 120
+        keep-alive-requests: 10000
+        log-format-escape-json: "true"
+        log-format-upstream: >
+          {"time": "$time_iso8601", "remote_addr": "$proxy_protocol_addr",
+          "x_forwarded_for": "$proxy_add_x_forwarded_for", "request_id": "$req_id",
+          "remote_user": "$remote_user", "bytes_sent": $bytes_sent, "request_time": $request_time,
+          "status": $status, "vhost": "$host", "request_proto": "$server_protocol",
+          "path": "$uri", "request_query": "$args", "request_length": $request_length,
+          "duration": $request_time,"method": "$request_method", "http_referrer": "$http_referer",
+          "http_user_agent": "$http_user_agent"}
+        proxy-body-size: 0
+        proxy-buffer-size: "16k"
+        ssl-protocols: "TLSv1.3 TLSv1.2"
+        use-forwarded-headers: "true"
+
+      metrics:
+        enabled: true
+        serviceMonitor:
+          enabled: true
+          namespace: network
+          namespaceSelector:
+            any: true
+
+      extraArgs:
+        default-ssl-certificate: "network/jahanson-tech-tls"
+
+      topologySpreadConstraints:
+        - maxSkew: 2
+          topologyKey: kubernetes.io/hostname
+          whenUnsatisfiable: DoNotSchedule
+          labelSelector:
+            matchLabels:
+              app.kubernetes.io/instance: nginx-internal
+              app.kubernetes.io/component: controller
+
+      resources:
+        requests:
+          cpu: 99m
+          memory: 768Mi
+        limits:
+          memory: 768Mi
+
+    defaultBackend:
+      enabled: false
diff --git a/kubernetes/apps/network/ingress-nginx/internal/kustomization.yaml b/kubernetes/apps/network/ingress-nginx/internal/kustomization.yaml
new file mode 100644
index 00000000..0a36dcc3
--- /dev/null
+++ b/kubernetes/apps/network/ingress-nginx/internal/kustomization.yaml
@@ -0,0 +1,7 @@
+---
+# yaml-language-server: $schema=https://json.schemastore.org/kustomization.json
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+  - ./certificate.yaml
+  - ./helmrelease.yaml
diff --git a/kubernetes/apps/network/ingress-nginx/ks.yaml b/kubernetes/apps/network/ingress-nginx/ks.yaml
index 7ef0b614..cc1fe108 100644
--- a/kubernetes/apps/network/ingress-nginx/ks.yaml
+++ b/kubernetes/apps/network/ingress-nginx/ks.yaml
@@ -19,20 +19,20 @@ spec:
     - name: cluster-apps-cert-manager-issuers
 ---
 # yaml-language-server: $schema=https://raw.githubusercontent.com/fluxcd-community/flux2-schemas/main/kustomization-kustomize-v1.json
-# apiVersion: kustomize.toolkit.fluxcd.io/v1
-# kind: Kustomization
-# metadata:
-#   name: cluster-apps-ingress-nginx-peertube
-#   namespace: flux-system
-#   labels:
-#     substitution.flux.home.arpa/enabled: "true"
-# spec:
-#   interval: 10m
-#   path: "./kubernetes/apps/network/ingress-nginx/peertube"
-#   prune: true
-#   sourceRef:
-#     kind: GitRepository
-#     name: homelab
-#   wait: true
-#   dependsOn:
-#     - name: cluster-apps-cert-manager-issuers
+apiVersion: kustomize.toolkit.fluxcd.io/v1
+kind: Kustomization
+metadata:
+  name: cluster-apps-ingress-nginx-internal
+  namespace: flux-system
+  labels:
+    substitution.flux.home.arpa/enabled: "true"
+spec:
+  interval: 10m
+  path: "./kubernetes/apps/network/ingress-nginx/internal"
+  prune: true
+  sourceRef:
+    kind: GitRepository
+    name: homelab
+  wait: true
+  dependsOn:
+    - name: cluster-apps-cert-manager-issuers