fix(dlob): run redis as single-node cluster

kustomize/base/dlob/redis.yaml

@@ -32,7 +32,48 @@ spec:
         - name: redis
           image: redis:7-alpine
           imagePullPolicy: IfNotPresent
+          env:
+            - name: POD_IP
+              valueFrom:
+                fieldRef:
+                  fieldPath: status.podIP
           ports:
             - name: redis
               containerPort: 6379
-          args: ["--save", "", "--appendonly", "no"]
+          # DLOB redis client uses ioredis Cluster when RUNNING_LOCAL=true and LOCAL_CACHE=true.
+          # We run a single-node Redis Cluster (no TLS) and assign all slots on startup.
+          command: ["/bin/sh", "-lc"]
+          args:
+            - |
+              exec redis-server \
+                --save "" \
+                --appendonly no \
+                --protected-mode no \
+                --bind 0.0.0.0 \
+                --cluster-enabled yes \
+                --cluster-config-file /data/nodes.conf \
+                --cluster-node-timeout 5000 \
+                --cluster-require-full-coverage no \
+                --cluster-announce-ip "${POD_IP}" \
+                --cluster-announce-port 6379 \
+                --cluster-announce-bus-port 16379
+          lifecycle:
+            postStart:
+              exec:
+                command:
+                  - /bin/sh
+                  - -lc
+                  - |
+                    set -e
+                    for i in $(seq 1 60); do
+                      redis-cli -h 127.0.0.1 -p 6379 ping >/dev/null 2>&1 && break
+                      sleep 1
+                    done
+
+                    # If cluster is already initialized, do nothing.
+                    if redis-cli -h 127.0.0.1 -p 6379 cluster info 2>/dev/null | grep -q 'cluster_slots_assigned:16384'; then
+                      exit 0
+                    fi
+
+                    # Redis 7+ supports CLUSTER ADDSLOTSRANGE.
+                    redis-cli -h 127.0.0.1 -p 6379 cluster addslotsrange 0 16383 || true