Ft/cluster config

Makefile

@@ -38,15 +38,37 @@ cluster_start:
 	k3d cluster start gobank-cluster
 
 cluster_db:
-	kubectl apply -f postgres-cluster.yaml
+	kubectl apply -f ./k8s/apps/gobank/postgres-cluster.yaml --server-side
 
 cluster_gobank_api:
-	kubectl apply -f gobank-api-deployment.yaml
+	kubectl apply -f ./k8s/apps/gobank/gobank-api-deployment.yaml --server-side
 
-cluster_gobank:
-	k3d cluster create gobank-cluster --api-port 6550 -p "80:80@loadbalancer" -p "443:443@loadbalancer" --agents 2
+apply_cluster_configs: # this is really hacky but we'll roll with it for now. If an issue arises, then rerun the command
+	kubectl apply -k ./k8s/base/cnpg-operator --server-side
+	sleep 20
+	kubectl wait --for condition=established --timeout=60s crd/clusters.postgresql.cnpg.io
+	kubectl apply -k ./k8s/apps/gobank --server-side
+
+cluster:
+	k3d cluster create --config ./k3d-config.yaml
+
+delete_cluster_gobank:
+	k3d cluster delete gobank-cluster
+
+namespace:
+	kubectl apply -f k8s/apps/gobank/namespace.yaml
+
+create_creds: namespace
+	@read -p "Enter DB Password: " pwd; \
+	kubectl create secret generic db-creds \
+		--from-literal=username=root \
+		--from-literal=password=$$pwd \
+		--namespace gobank \
+		--dry-run=client -o yaml | kubectl apply -f -
+
+setup: create_creds apply_cluster_configs
 
 db_tunnel:
 	kubectl port-forward svc/gobank-db-rw 5432:5432
 
-.PHONY: postgres createdb dropdb migrateup migratedown sqlc test mock server migrateup1 migratedown1 cluster_db cluster_start cluster_stop cluster_gobank cluster_gobank_api db_tunnel
+.PHONY: postgres createdb dropdb migrateup migratedown sqlc test mock server migrateup1 migratedown1 cluster_db cluster_start cluster_stop cluster cluster_gobank_api db_tunnel delete_cluster_gobank apply_cluster_configs namespace create_creds setup

README.md

@@ -1,13 +1,32 @@
-Create gobank cluster via:
 # Basic Commands
 
+Create gobank cluster via:
+```bash
+make cluster
+```
+
+Delete gobank cluster via:
+```bash
+make delete_cluster_gobank
+```
+
+Make initial setup via:
 ```bash
-make cluster_gobank
+make setup
 ```
 
 Create postgres database cluster credentials via: 
 ```bash
-kubectl create secret generic db-creds --from-literal=username=root --from-literal=password='YOUR_PASSWORD_HERE'
+make create_creds
+```
+or manual via (make sure namespace exists first):
+```bash
+kubectl create secret generic db-creds --namespace gobank --from-literal=username=root --from-literal=password='YOUR_PASSWORD_HERE'
+```
+
+Create namespace via:
+```bash
+make namespace
 ```
 
 Delete postgres database cluster credentials via:
@@ -30,6 +49,11 @@ Apply a deployment yaml file via:
 kubectl apply -f PATH_TO_YAML
 ```
 
+Apply all cluster configs:
+```bash
+make apply_cluster_configs
+```
+
 Create postgres database cluster via:
 ```bash
 make cluster_db

k3d-config.yaml

@@ -0,0 +1,17 @@
+apiVersion: k3d.io/v1alpha5
+kind: Simple
+metadata:
+  name: gobank-cluster
+servers: 1
+agents: 2
+image: rancher/k3s:v1.36.0-rc3-k3s1
+kubeAPI:
+  hostIP: "0.0.0.0"
+  hostPort: "6550"
+ports:
+  - port: 80:80
+    nodeFilters:
+      - loadbalancer
+  - port: 443:443
+    nodeFilters:
+      - loadbalancer

k8s/apps/gobank/gobank-api-deployment.yaml

@@ -0,0 +1,91 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: gobank-api
+  labels:
+    app: gobank-api
+spec:
+  replicas: 2
+  selector:
+    matchLabels:
+      app: gobank-api
+  template:
+    metadata:
+      labels:
+        app: gobank-api
+    spec:
+      initContainers:
+        - name: wait-for-db
+          image: postgres:alpine
+          command:
+            - sh
+            - -c
+            - |
+              echo "Waiting for gobank-db-rw to be ready..."
+              until pg_isready -h gobank-db-rw -p 5432 -U $PGUSER; do
+                sleep 2
+              done
+              echo "Database is ready!"
+          env:
+            - name: PGUSER
+              valueFrom:
+                secretKeyRef:
+                  name: db-creds
+                  key: username
+      containers:
+        - name: gobank-api
+          image: ghcr.io/hypernaser/gobank:latest
+          ports:
+            - containerPort: 8080
+          resources:
+            requests:
+              cpu: "100m"
+              memory: "64Mi"
+            limits:
+              cpu: "500m"
+              memory: "128Mi"
+          env:
+            - name: PGPASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: db-creds
+                  key: password
+            - name: PGUSER
+              valueFrom:
+                secretKeyRef:
+                  name: db-creds
+                  key: username
+            - name: DB_SOURCE
+              value: "postgres://gobank-db-rw:5432/gobank?sslmode=disable"
+---
+# The Service (The Internal Load Balancer)
+apiVersion: v1
+kind: Service
+metadata:
+  name: gobank-api-service
+spec:
+  selector:
+    app: gobank-api
+  ports:
+    - protocol: TCP
+      port: 80
+      targetPort: 8080
+---
+# The Ingress (The External Load Balancer)
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: gobank-ingress
+  annotations:
+    traefik.ingress.kubernetes.io/router.entrypoints: web
+spec:
+  rules:
+    - http:
+        paths:
+          - path: /
+            pathType: Prefix
+            backend:
+              service:
+                name: gobank-api-service
+                port:
+                  number: 80

k8s/apps/gobank/kustomization.yaml

@@ -0,0 +1,8 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+namespace: gobank
+
+resources:
+  - namespace.yaml
+  - postgres-cluster.yaml
+  - gobank-api-deployment.yaml

k8s/apps/gobank/namespace.yaml

@@ -0,0 +1,4 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: gobank

k8s/apps/gobank/postgres-cluster.yaml

@@ -0,0 +1,29 @@
+apiVersion: postgresql.cnpg.io/v1
+kind: Cluster
+metadata:
+  name: gobank-db
+spec:
+  instances: 2
+  imageName: ghcr.io/cloudnative-pg/postgresql:18.3
+
+  resources:
+    requests:
+      memory: "256Mi"
+      cpu: "100m"
+    limits:
+      memory: "512Mi"
+      cpu: "500m"
+
+  bootstrap:
+    initdb:
+      database: gobank
+      owner: root
+      secret:
+        name: db-creds 
+
+  storage:
+    size: 1Gi
+
+  affinity:
+    enablePodAntiAffinity: true
+    topologyKey: kubernetes.io/hostname

k8s/base/cnpg-operator/kustomization.yaml

@@ -0,0 +1,5 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+  - https://raw.githubusercontent.com/cloudnative-pg/cloudnative-pg/release-1.29/releases/cnpg-1.29.0.yaml