docs: Various Kubernetes deployment improvements (#862)

* changed the secrets from configmap to secret object, create ingress instead of loadbalancer.

Implemented the generation of a secret from the .env file and then put as environment variables into the deployments.
Nextauth_URL is now set in the kustomization file and is then generated into a configmap and put as an env into the deployments.
Opionated change: the web service is now a clusterIP Service and an ingress object is included.

* changed the tls secret name in kustomize to a more example name

* fixed image name in kustomization so the version tag gets replaced properly

* tags are without v, otherwise we get an imagepullerror

* removed unneccessary parts of the .env.sample

* split env and secrets, added documentation, created sample ingress.

changed the default from ingress back to Loadbalancer.
Added Documentation on how to change to ingress and add TLS Support.

split env to secret and env file which have to be configured before deploying.

6 files changed, 41 insertions, 13 deletions

diff --git a/kubernetes/.env_sample b/kubernetes/.env_sample
index c34a7ba9..cab8fc95 100644
--- a/kubernetes/.env_sample
+++ b/kubernetes/.env_sample
@@ -1,6 +1,3 @@
-HOARDER_VERSION=release
-# Use `openssl rand -base64 36` to generate the random strings
-NEXTAUTH_SECRET=generated_secret
-MEILI_MASTER_KEY=generated_secret
+# Put your configuration options here
 NEXTAUTH_URL=http://localhost:3000
-NEXT_PUBLIC_SECRET="my-super-duper-secret-string"
+HOARDER_VERSION=release
\ No newline at end of file
diff --git a/kubernetes/.secrets_sample b/kubernetes/.secrets_sample
new file mode 100644
index 00000000..f2421cd6
--- /dev/null
+++ b/kubernetes/.secrets_sample
@@ -0,0 +1,4 @@
+# Use `openssl rand -base64 36` to generate the random strings
+NEXTAUTH_SECRET=generated_secret
+MEILI_MASTER_KEY=generated_secret
+NEXT_PUBLIC_SECRET="my-super-duper-secret-string"
diff --git a/kubernetes/ingress_sample.yaml b/kubernetes/ingress_sample.yaml
new file mode 100644
index 00000000..534dcb8c
--- /dev/null
+++ b/kubernetes/ingress_sample.yaml
@@ -0,0 +1,17 @@
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: hoarder-web-ingress
+  namespace: hoarder
+spec:
+  rules:
+  - host: "hoarder.example.com"
+    http:
+      paths:
+      - path: "/"
+        pathType: Prefix
+        backend:
+          service:
+            name: "web"
+            port:
+              number: 3000
diff --git a/kubernetes/kustomization.yaml b/kubernetes/kustomization.yaml
index ca8c85ab..d066d22c 100644
--- a/kubernetes/kustomization.yaml
+++ b/kubernetes/kustomization.yaml
@@ -3,10 +3,15 @@ kind: Kustomization
 
 namespace: hoarder
 
-configMapGenerator:
+secretGenerator:
 - envs:
-  - .env
-  name: hoarder-env
+  - .secrets
+  name: hoarder-secrets
+
+configMapGenerator:
+  - envs:
+    - .env
+    name: hoarder-configuration
 
 resources:
 - namespace.yaml
@@ -23,7 +28,7 @@ replacements:
 - source:
     fieldPath: data.HOARDER_VERSION
     kind: ConfigMap
-    name: hoarder-env
+    name: hoarder-configuration
     version: v1
   targets:
   - fieldPaths:
@@ -35,4 +40,4 @@ replacements:
       group: apps
       kind: Deployment
       name: web
-      version: v1
+      version: v1
\ No newline at end of file
diff --git a/kubernetes/meilisearch-deployment.yaml b/kubernetes/meilisearch-deployment.yaml
index d91c7d96..31979bbf 100644
--- a/kubernetes/meilisearch-deployment.yaml
+++ b/kubernetes/meilisearch-deployment.yaml
@@ -22,8 +22,10 @@ spec:
             - mountPath: /meili_data
               name: meilisearch
           envFrom:
+            - secretRef:
+                name: hoarder-secrets
             - configMapRef:
-                name: hoarder-env
+                name: hoarder-configuration
       volumes:
         - name: meilisearch
           persistentVolumeClaim:
diff --git a/kubernetes/web-deployment.yaml b/kubernetes/web-deployment.yaml
index c2a5031d..25bd8be4 100644
--- a/kubernetes/web-deployment.yaml
+++ b/kubernetes/web-deployment.yaml
@@ -14,7 +14,8 @@ spec:
     spec:
       containers:
         - name: web
-          image: ghcr.io/hoarder-app/hoarder:HOARDER_VERSION_PLACEHOLDER
+          image: ghcr.io/hoarder-app/hoarder
+          imagePullPolicy: Always
           ports:
             - containerPort: 3000
           env:
@@ -29,8 +30,10 @@ spec:
             - mountPath: /data
               name: data
           envFrom:
+            - secretRef:
+                name: hoarder-secrets
             - configMapRef:
-                name: hoarder-env
+                name: hoarder-configuration
       volumes:
         - name: data
           persistentVolumeClaim: