argocd-apps/apps/base/arrstack/prowlarr/deployment.yaml

---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: prowlarr
  namespace: arrstack
spec:
  replicas: 1
  strategy:
    # RWO config PVC + single stateful SQLite DB: never run two pods at once.
    type: Recreate
  selector:
    matchLabels:
      app: prowlarr
  template:
    metadata:
      labels:
        app: prowlarr
    spec:
      securityContext:
        fsGroup: 1000
        fsGroupChangePolicy: OnRootMismatch
      initContainers:
        # Enforce the Vault-sourced API key and the reverse-proxy URL base in
        # /config/config.xml before the app starts. Vault is source of truth
        # (override bootstrap): the key is minted in Vault, synced by VSO into the
        # prowlarr-apikey Secret, and written here. UrlBase=/prowlarr lets arrproxy
        # forward arrstack.unkin.net/prowlarr/... with the prefix preserved (no 307).
        # Runs as root to fix ownership; touches only <ApiKey>, <UrlBase>, and
        # <AuthenticationMethod>=External + <AuthenticationRequired>. External makes
        # the *arr defer UI login to arrproxy/oauth2-proxy (same no-auth request
        # handler as None, but permits remote access without prompting).
        - name: apikey-init
          image: artifactapi.k8s.syd1.au.unkin.net/dockerhub/library/busybox:1.37.0
          imagePullPolicy: IfNotPresent
          securityContext:
            runAsUser: 0
          env:
            - name: API_KEY
              valueFrom:
                secretKeyRef:
                  name: prowlarr-apikey
                  key: apitoken
          command:
            - sh
            - -c
            - |
              set -eu
              case "$API_KEY" in
                "" | *[!0-9a-fA-F]*)
                  echo "config-init: API_KEY missing or not hex; refusing" >&2
                  exit 1
                  ;;
              esac
              URL_BASE=/prowlarr
              AUTH_METHOD=External
              AUTH_REQUIRED=Enabled
              CFG=/config/config.xml
              if [ ! -f "$CFG" ]; then
                printf '<Config>\n  <ApiKey>%s</ApiKey>\n  <UrlBase>%s</UrlBase>\n  <AuthenticationMethod>%s</AuthenticationMethod>\n  <AuthenticationRequired>%s</AuthenticationRequired>\n</Config>\n' "$API_KEY" "$URL_BASE" "$AUTH_METHOD" "$AUTH_REQUIRED" > "$CFG"
              else
                if grep -q '<ApiKey>' "$CFG"; then
                  sed -i "s|<ApiKey>[^<]*</ApiKey>|<ApiKey>${API_KEY}</ApiKey>|" "$CFG"
                else
                  sed -i "s|<Config>|<Config>\n  <ApiKey>${API_KEY}</ApiKey>|" "$CFG"
                fi
                if grep -q '<UrlBase>' "$CFG"; then
                  sed -i "s|<UrlBase>[^<]*</UrlBase>|<UrlBase>${URL_BASE}</UrlBase>|" "$CFG"
                else
                  sed -i "s|<Config>|<Config>\n  <UrlBase>${URL_BASE}</UrlBase>|" "$CFG"
                fi
                if grep -q '<AuthenticationMethod>' "$CFG"; then
                  sed -i "s|<AuthenticationMethod>[^<]*</AuthenticationMethod>|<AuthenticationMethod>${AUTH_METHOD}</AuthenticationMethod>|" "$CFG"
                else
                  sed -i "s|<Config>|<Config>\n  <AuthenticationMethod>${AUTH_METHOD}</AuthenticationMethod>|" "$CFG"
                fi
                if grep -q '<AuthenticationRequired>' "$CFG"; then
                  sed -i "s|<AuthenticationRequired>[^<]*</AuthenticationRequired>|<AuthenticationRequired>${AUTH_REQUIRED}</AuthenticationRequired>|" "$CFG"
                else
                  sed -i "s|<Config>|<Config>\n  <AuthenticationRequired>${AUTH_REQUIRED}</AuthenticationRequired>|" "$CFG"
                fi
              fi
              chown 1000:1000 "$CFG"
              chmod 600 "$CFG"
              echo "config-init: <ApiKey>, <UrlBase>=${URL_BASE}, <AuthenticationMethod>=${AUTH_METHOD}, <AuthenticationRequired>=${AUTH_REQUIRED} enforced from Vault"
          resources:
            requests:
              cpu: 50m
              memory: 32Mi
            limits:
              cpu: 200m
              memory: 64Mi
          volumeMounts:
            - name: config
              mountPath: /config
      containers:
        - name: prowlarr
          image: artifactapi.k8s.syd1.au.unkin.net/dockerhub/linuxserver/prowlarr:2.5.2
          imagePullPolicy: IfNotPresent
          ports:
            - name: http
              containerPort: 9696
              protocol: TCP
          env:
            - name: PUID
              value: "1000"
            - name: PGID
              value: "1000"
            - name: TZ
              value: Australia/Sydney
          livenessProbe:
            httpGet:
              path: /prowlarr/ping
              port: http
            initialDelaySeconds: 30
            periodSeconds: 30
            timeoutSeconds: 5
            failureThreshold: 3
          readinessProbe:
            httpGet:
              path: /prowlarr/ping
              port: http
            initialDelaySeconds: 10
            periodSeconds: 10
            timeoutSeconds: 5
            failureThreshold: 3
          resources:
            requests:
              cpu: 100m
              memory: 256Mi
            limits:
              cpu: "1"
              memory: 512Mi
          volumeMounts:
            - name: config
              mountPath: /config
      volumes:
        - name: config
          persistentVolumeClaim:
            claimName: prowlarr-config