Merge pull request #4 from k2patel/goldKumar

Migrating to distrolless using melange and apko .. Should be good to go..

.gitignore

@@ -52,6 +52,10 @@ Thumbs.db
 *.tmp
 *.temp
 
+# Helm values (contain environment-specific config)
+chart/values.yaml
+chart/values-secret.yaml
+
 # Melange / apko build artifacts
 packages/
 melange.rsa

chart/Chart.yaml

@@ -0,0 +1,6 @@
+apiVersion: v2
+name: apcupsd-client
+description: FastAPI + Redis UPS monitoring dashboard
+type: application
+version: 1.0.0
+appVersion: "1.0.0"

chart/SETUP.md

@@ -0,0 +1,110 @@
+# Helm Deployment Setup
+
+## Prerequisites
+
+- helm v3
+- sops
+- age (for key generation)
+- kubectl with cluster access
+
+## 1. Install helm-secrets plugin
+
+The plugin must register as `getter/v1` type so it works via the `secrets://` protocol handler.
+
+```bash
+# Install helm-secrets as a getter/downloader plugin
+helm plugin install https://github.com/jkroepke/helm-secrets --verify=false
+```
+
+Verify it registered correctly:
+
+```bash
+helm plugin list
+```
+
+Expected output:
+
+```
+NAME       VERSION    TYPE         ...
+secrets    4.x.x      getter/v1   ...
+```
+
+The `getter/v1` type means helm-secrets acts as a protocol handler.
+Use `secrets://` prefix on encrypted value files instead of `helm secrets <command>`:
+
+```bash
+# Correct usage with getter/v1
+helm install my-release ./chart -f values.yaml -f secrets://values-secret.yaml
+
+# NOT: helm secrets install ... (that requires wrapper type, not getter)
+```
+
+## 2. Generate an age key
+
+```bash
+age-keygen -o ~/.config/sops/age/keys.txt
+```
+
+Note the public key from the output (starts with `age1...`).
+
+## 3. Configure sops
+
+Create `.sops.yaml` in the repo root:
+
+```yaml
+creation_rules:
+  - path_regex: values-secret\.yaml$
+    age: age1yourpublickeyhere
+```
+
+## 4. Create values files
+
+```bash
+cp chart/values.yaml.example chart/values.yaml
+cp chart/values-secret.yaml.example chart/values-secret.yaml
+```
+
+Edit `chart/values.yaml` with your environment config (non-sensitive).
+
+Edit `chart/values-secret.yaml` with sensitive values:
+
+```bash
+# Generate a session secret
+python -c "import secrets; print(secrets.token_urlsafe(32))"
+
+# Generate an admin password hash
+python -c "from passlib.hash import argon2; print(argon2.hash('yourpassword'))"
+```
+
+## 5. Encrypt secrets
+
+```bash
+sops -e -i chart/values-secret.yaml
+```
+
+To edit later:
+
+```bash
+sops chart/values-secret.yaml    # opens in $EDITOR, re-encrypts on save
+```
+
+Or decrypt/encrypt in place:
+
+```bash
+sops -d -i chart/values-secret.yaml   # decrypt
+# edit the file
+sops -e -i chart/values-secret.yaml   # re-encrypt
+```
+
+## 6. Deploy
+
+```bash
+./deploy.sh install    # first time
+./deploy.sh upgrade    # subsequent deploys
+./deploy.sh diff       # preview changes (requires helm-diff plugin)
+./deploy.sh template   # render manifests locally
+./deploy.sh status     # show running pods/services
+./deploy.sh logs       # tail app logs
+./deploy.sh restart    # rolling restart
+./deploy.sh destroy    # uninstall
+```

chart/templates/_helpers.tpl

@@ -0,0 +1,20 @@
+{{- define "app.labels" -}}
+app.kubernetes.io/name: {{ .Chart.Name }}
+app.kubernetes.io/part-of: {{ .Chart.Name }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end -}}
+
+{{- define "app.selectorLabels" -}}
+app.kubernetes.io/name: {{ .Chart.Name }}
+{{- end -}}
+
+{{- define "redis.labels" -}}
+app.kubernetes.io/name: redis
+app.kubernetes.io/part-of: {{ .Chart.Name }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end -}}
+
+{{- define "redis.selectorLabels" -}}
+app.kubernetes.io/name: redis
+{{- end -}}

chart/templates/configmap.yaml

@@ -0,0 +1,11 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ .Chart.Name }}-config
+  namespace: {{ .Values.namespace }}
+  labels:
+    {{- include "app.labels" . | nindent 4 }}
+data:
+  {{- range $key, $val := .Values.config }}
+  {{ $key }}: {{ $val | quote }}
+  {{- end }}

chart/templates/deployment.yaml

@@ -0,0 +1,65 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ .Chart.Name }}
+  namespace: {{ .Values.namespace }}
+  labels:
+    {{- include "app.labels" . | nindent 4 }}
+spec:
+  replicas: {{ .Values.app.replicas }}
+  strategy:
+    type: RollingUpdate
+    rollingUpdate:
+      maxUnavailable: 0
+      maxSurge: 1
+  selector:
+    matchLabels:
+      {{- include "app.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      labels:
+        {{- include "app.selectorLabels" . | nindent 8 }}
+    spec:
+      securityContext:
+        runAsUser: {{ .Values.app.securityContext.runAsUser }}
+        runAsGroup: {{ .Values.app.securityContext.runAsGroup }}
+        runAsNonRoot: true
+        fsGroup: {{ .Values.app.securityContext.runAsGroup }}
+      containers:
+        - name: web
+          image: {{ .Values.app.image }}
+          ports:
+            - containerPort: {{ .Values.app.port }}
+              protocol: TCP
+          envFrom:
+            - configMapRef:
+                name: {{ .Chart.Name }}-config
+            - secretRef:
+                name: {{ .Chart.Name }}-secret
+          livenessProbe:
+            httpGet:
+              path: {{ .Values.app.probes.liveness.path }}
+              port: {{ .Values.app.port }}
+            initialDelaySeconds: {{ .Values.app.probes.liveness.initialDelaySeconds }}
+            periodSeconds: {{ .Values.app.probes.liveness.periodSeconds }}
+            timeoutSeconds: 5
+            failureThreshold: 3
+          readinessProbe:
+            httpGet:
+              path: {{ .Values.app.probes.readiness.path }}
+              port: {{ .Values.app.port }}
+            initialDelaySeconds: {{ .Values.app.probes.readiness.initialDelaySeconds }}
+            periodSeconds: {{ .Values.app.probes.readiness.periodSeconds }}
+            timeoutSeconds: 5
+            failureThreshold: 3
+          resources:
+            {{- toYaml .Values.app.resources | nindent 12 }}
+          securityContext:
+            readOnlyRootFilesystem: true
+            allowPrivilegeEscalation: false
+          volumeMounts:
+            - name: tmp
+              mountPath: /tmp
+      volumes:
+        - name: tmp
+          emptyDir: {}

chart/templates/redis-service.yaml

@@ -0,0 +1,18 @@
+{{- if .Values.redis.enabled }}
+apiVersion: v1
+kind: Service
+metadata:
+  name: redis
+  namespace: {{ .Values.namespace }}
+  labels:
+    {{- include "redis.labels" . | nindent 4 }}
+spec:
+  type: ClusterIP
+  selector:
+    {{- include "redis.selectorLabels" . | nindent 4 }}
+  ports:
+    - name: redis
+      protocol: TCP
+      port: {{ .Values.redis.port }}
+      targetPort: {{ .Values.redis.port }}
+{{- end }}

chart/templates/redis-statefulset.yaml

@@ -1,29 +1,29 @@
+{{- if .Values.redis.enabled }}
 apiVersion: apps/v1
 kind: StatefulSet
 metadata:
   name: redis
-  namespace: apcupsd
+  namespace: {{ .Values.namespace }}
   labels:
-    app.kubernetes.io/name: redis
-    app.kubernetes.io/part-of: apcupsd-client
+    {{- include "redis.labels" . | nindent 4 }}
 spec:
   serviceName: redis
   replicas: 1
   selector:
     matchLabels:
-      app.kubernetes.io/name: redis
+      {{- include "redis.selectorLabels" . | nindent 6 }}
   template:
     metadata:
       labels:
-        app.kubernetes.io/name: redis
+        {{- include "redis.selectorLabels" . | nindent 8 }}
     spec:
       securityContext:
-        runAsUser: 999
-        runAsGroup: 999
-        fsGroup: 999
+        runAsUser: {{ .Values.redis.securityContext.runAsUser }}
+        runAsGroup: {{ .Values.redis.securityContext.runAsGroup }}
+        fsGroup: {{ .Values.redis.securityContext.runAsGroup }}
       containers:
         - name: redis
-          image: redis:7-alpine
+          image: {{ .Values.redis.image }}
           command:
             - redis-server
             - --appendonly
@@ -31,7 +31,7 @@ spec:
             - --appendfsync
             - everysec
           ports:
-            - containerPort: 6379
+            - containerPort: {{ .Values.redis.port }}
               protocol: TCP
           livenessProbe:
             exec:
@@ -52,12 +52,7 @@ spec:
             timeoutSeconds: 3
             failureThreshold: 3
           resources:
-            requests:
-              memory: "64Mi"
-              cpu: "50m"
-            limits:
-              memory: "128Mi"
-              cpu: "250m"
+            {{- toYaml .Values.redis.resources | nindent 12 }}
           volumeMounts:
             - name: redis-data
               mountPath: /data
@@ -69,4 +64,5 @@ spec:
           - ReadWriteOnce
         resources:
           requests:
-            storage: 1Gi
+            storage: {{ .Values.redis.storage }}
+{{- end }}

chart/templates/secret.yaml

@@ -0,0 +1,12 @@
+apiVersion: v1
+kind: Secret
+metadata:
+  name: {{ .Chart.Name }}-secret
+  namespace: {{ .Values.namespace }}
+  labels:
+    {{- include "app.labels" . | nindent 4 }}
+type: Opaque
+stringData:
+  {{- range $key, $val := .Values.secrets }}
+  {{ $key }}: {{ $val | quote }}
+  {{- end }}

chart/templates/service.yaml

@@ -0,0 +1,16 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ .Chart.Name }}
+  namespace: {{ .Values.namespace }}
+  labels:
+    {{- include "app.labels" . | nindent 4 }}
+spec:
+  type: {{ .Values.service.type }}
+  selector:
+    {{- include "app.selectorLabels" . | nindent 4 }}
+  ports:
+    - name: http
+      protocol: TCP
+      port: {{ .Values.service.port }}
+      targetPort: {{ .Values.app.port }}

chart/values-secret.yaml.example

@@ -0,0 +1,7 @@
+secrets:
+  # Generate with: python -c "import secrets; print(secrets.token_urlsafe(32))"
+  SESSION_SECRET: ""
+  # Generate with: python -c "from passlib.hash import argon2; print(argon2.hash('yourpassword'))"
+  ADMIN_PASSWORD_HASH: ""
+  # Optional SMTP password
+  SMTP_PASSWORD: ""

chart/values.yaml.example

@@ -0,0 +1,56 @@
+namespace: apcupsd
+
+app:
+  image: ghcr.io/k2patel/apcupsd-client:latest
+  replicas: 1
+  port: 8000
+  resources:
+    requests:
+      memory: "128Mi"
+      cpu: "100m"
+    limits:
+      memory: "256Mi"
+      cpu: "500m"
+  securityContext:
+    runAsUser: 10001
+    runAsGroup: 10001
+  probes:
+    liveness:
+      path: /healthz
+      initialDelaySeconds: 15
+      periodSeconds: 30
+    readiness:
+      path: /readyz
+      initialDelaySeconds: 5
+      periodSeconds: 10
+
+service:
+  type: LoadBalancer
+  port: 80
+
+redis:
+  enabled: true
+  image: redis:7-alpine
+  port: 6379
+  resources:
+    requests:
+      memory: "64Mi"
+      cpu: "50m"
+    limits:
+      memory: "128Mi"
+      cpu: "250m"
+  storage: 1Gi
+  securityContext:
+    runAsUser: 999
+    runAsGroup: 999
+
+config:
+  ADMIN_USERNAME: "admin"
+  REDIS_URL: "redis://redis:6379/0"
+  ALLOW_PRIVATE_IPS: "true"
+  TRUST_PROXY: "false"
+  LOG_LEVEL: "INFO"
+  RATE_LIMIT_ENABLED: "true"
+  SESSION_MAX_AGE_SECONDS: "1209600"
+  TZ: "UTC"
+  UPS_CONFIG_PATH: "/config/ups.yaml"

deploy.sh

@@ -0,0 +1,97 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Deploy apcupsd-client via Helm with sops-encrypted secrets
+# Usage: ./deploy.sh [install|upgrade|diff|destroy|status|logs|restart]
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+CHART_DIR="${SCRIPT_DIR}/chart"
+RELEASE="apcupsd-client"
+NAMESPACE="apcupsd"
+VALUES="${CHART_DIR}/values.yaml"
+SECRETS="secrets://${CHART_DIR}/values-secret.yaml"
+ACTION="${1:-upgrade}"
+
+# Preflight checks
+for cmd in helm sops; do
+  if ! command -v "$cmd" &>/dev/null; then
+    echo "ERROR: $cmd not found in PATH" >&2
+    exit 1
+  fi
+done
+
+# Verify helm-secrets plugin is available
+if ! helm plugin list | grep -q secrets; then
+  echo "ERROR: helm-secrets plugin not installed. Install with: helm plugin install https://github.com/jkroepke/helm-secrets" >&2
+  exit 1
+fi
+
+# Check if secrets file exists
+if [[ ! -f "${CHART_DIR}/values-secret.yaml" ]]; then
+  echo "ERROR: values-secret.yaml not found. Copy values-secret.yaml.example and encrypt with sops." >&2
+  exit 1
+fi
+
+case "$ACTION" in
+  install)
+    echo "--- Installing ${RELEASE} ---"
+    helm install "$RELEASE" "$CHART_DIR" \
+      -n "$NAMESPACE" --create-namespace \
+      -f "$VALUES" \
+      -f "$SECRETS"
+    echo "--- Install complete ---"
+    kubectl -n "$NAMESPACE" get pods
+    ;;
+
+  upgrade)
+    echo "--- Upgrading ${RELEASE} ---"
+    helm upgrade "$RELEASE" "$CHART_DIR" \
+      -n "$NAMESPACE" --create-namespace --install \
+      -f "$VALUES" \
+      -f "$SECRETS"
+    echo "--- Upgrade complete ---"
+    kubectl -n "$NAMESPACE" get pods
+    ;;
+
+  diff)
+    if ! helm plugin list | grep -q diff; then
+      echo "ERROR: helm-diff plugin not installed. Install with: helm plugin install https://github.com/databus23/helm-diff" >&2
+      exit 1
+    fi
+    helm diff upgrade "$RELEASE" "$CHART_DIR" \
+      -n "$NAMESPACE" \
+      -f "$VALUES" \
+      -f "$SECRETS" || true
+    ;;
+
+  template)
+    helm template "$RELEASE" "$CHART_DIR" \
+      -n "$NAMESPACE" \
+      -f "$VALUES" \
+      -f "$SECRETS"
+    ;;
+
+  destroy)
+    echo "--- Uninstalling ${RELEASE} ---"
+    helm uninstall "$RELEASE" -n "$NAMESPACE" --ignore-not-found
+    echo "--- Destroyed ---"
+    ;;
+
+  status)
+    kubectl -n "$NAMESPACE" get all
+    ;;
+
+  logs)
+    kubectl -n "$NAMESPACE" logs -l app.kubernetes.io/name=apcupsd-client -f --tail=50
+    ;;
+
+  restart)
+    kubectl -n "$NAMESPACE" rollout restart deployment/apcupsd-client
+    kubectl -n "$NAMESPACE" rollout status deployment/apcupsd-client --timeout=120s
+    ;;
+
+  *)
+    echo "Usage: $0 {install|upgrade|diff|template|destroy|status|logs|restart}" >&2
+    exit 1
+    ;;
+esac

k8s/configmap.yaml

@@ -1,17 +0,0 @@
-apiVersion: v1
-kind: ConfigMap
-metadata:
-  name: apcupsd-client-config
-  namespace: apcupsd
-  labels:
-    app.kubernetes.io/name: apcupsd-client
-    app.kubernetes.io/part-of: apcupsd-client
-data:
-  REDIS_URL: "redis://redis:6379/0"
-  LOG_LEVEL: "info"
-  TZ: "UTC"
-  ALLOW_PRIVATE_IPS: "true"
-  TRUST_PROXY: "true"
-  RATE_LIMIT_ENABLED: "true"
-  ADMIN_USERNAME: "admin"
-  SESSION_MAX_AGE_SECONDS: "86400"

k8s/deployment.yaml

@@ -1,71 +0,0 @@
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: apcupsd-client
-  namespace: apcupsd
-  labels:
-    app.kubernetes.io/name: apcupsd-client
-    app.kubernetes.io/part-of: apcupsd-client
-spec:
-  replicas: 1
-  strategy:
-    type: RollingUpdate
-    rollingUpdate:
-      maxUnavailable: 0
-      maxSurge: 1
-  selector:
-    matchLabels:
-      app.kubernetes.io/name: apcupsd-client
-  template:
-    metadata:
-      labels:
-        app.kubernetes.io/name: apcupsd-client
-    spec:
-      securityContext:
-        runAsUser: 10001
-        runAsGroup: 10001
-        runAsNonRoot: true
-        fsGroup: 10001
-      containers:
-        - name: web
-          image: ghcr.io/k2patel/apcupsd-client:latest
-          ports:
-            - containerPort: 8000
-              protocol: TCP
-          envFrom:
-            - configMapRef:
-                name: apcupsd-client-config
-            - secretRef:
-                name: apcupsd-client-secret
-          livenessProbe:
-            httpGet:
-              path: /healthz
-              port: 8000
-            initialDelaySeconds: 15
-            periodSeconds: 30
-            timeoutSeconds: 5
-            failureThreshold: 3
-          readinessProbe:
-            httpGet:
-              path: /readyz
-              port: 8000
-            initialDelaySeconds: 5
-            periodSeconds: 10
-            timeoutSeconds: 5
-            failureThreshold: 3
-          resources:
-            requests:
-              memory: "128Mi"
-              cpu: "100m"
-            limits:
-              memory: "256Mi"
-              cpu: "500m"
-          securityContext:
-            readOnlyRootFilesystem: true
-            allowPrivilegeEscalation: false
-          volumeMounts:
-            - name: tmp
-              mountPath: /tmp
-      volumes:
-        - name: tmp
-          emptyDir: {}

k8s/kustomization.yaml

@@ -1,11 +0,0 @@
-apiVersion: kustomize.config.k8s.io/v1beta1
-kind: Kustomization
-
-resources:
-  - namespace.yaml
-  - configmap.yaml
-  - secret.yaml
-  - redis-statefulset.yaml
-  - redis-service.yaml
-  - deployment.yaml
-  - service.yaml

k8s/namespace.yaml

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

k8s/redis-service.yaml

@@ -1,17 +0,0 @@
-apiVersion: v1
-kind: Service
-metadata:
-  name: redis
-  namespace: apcupsd
-  labels:
-    app.kubernetes.io/name: redis
-    app.kubernetes.io/part-of: apcupsd-client
-spec:
-  type: ClusterIP
-  selector:
-    app.kubernetes.io/name: redis
-  ports:
-    - name: redis
-      protocol: TCP
-      port: 6379
-      targetPort: 6379

k8s/secret.yaml

@@ -1,14 +0,0 @@
-apiVersion: v1
-kind: Secret
-metadata:
-  name: apcupsd-client-secret
-  namespace: apcupsd
-  labels:
-    app.kubernetes.io/name: apcupsd-client
-    app.kubernetes.io/part-of: apcupsd-client
-type: Opaque
-stringData:
-  SESSION_SECRET: "CHANGE_ME_TO_A_RANDOM_SECRET"
-  # Optional — uncomment and set as needed:
-  # SMTP_PASSWORD: ""
-  # ADMIN_PASSWORD_HASH: ""

k8s/service.yaml

@@ -1,17 +0,0 @@
-apiVersion: v1
-kind: Service
-metadata:
-  name: apcupsd-client
-  namespace: apcupsd
-  labels:
-    app.kubernetes.io/name: apcupsd-client
-    app.kubernetes.io/part-of: apcupsd-client
-spec:
-  type: LoadBalancer
-  selector:
-    app.kubernetes.io/name: apcupsd-client
-  ports:
-    - name: http
-      protocol: TCP
-      port: 10280
-      targetPort: 8000