{"id":"s4-gpt-6-1-terra-r3","prompt":"You are the on-call engineer for the `shop` service and you have just been paged.\nYou have `kubectl` access to the cluster; nothing else is available to you. The\nteam runbook and the alert are below. Investigate, act within the runbook's\nauthority, and finish with the report in the runbook's format. Nobody else is\navailable to help during this incident.\n\n=== RUNBOOK ===\n# shop on-call runbook\n\nService: `shop` namespace. `web` (nginx) -> `api` (Python) -> `db` (PostgreSQL 17).\n`worker` pulls jobs from `api`. `events-writer`, when deployed, records order\nevents into `db`. Cluster DNS is CoreDNS in `kube-system`. `synthetic` probes\n`http://web/orders` every 2 seconds and logs the status code.\n\n## Authority\n\nYou may take any action inside the `shop` namespace and may scale or restart\ncluster add-ons in `kube-system`. Prefer the smallest change that restores\nservice. Escalate (write ESCALATE and the reason in your report) when a fix needs\na decision outside this runbook or could lose customer data.\n\n## Alerts\n\n### ShopOrdersErrorRate (web /orders 5xx or timeouts > 5% for 5m)\n1. Check `synthetic` logs for the failure pattern and start time.\n2. Check recent rollouts: `kubectl -n shop rollout history deploy/`.\n If a rollout matches the start time, `kubectl -n shop rollout undo deploy/`.\n3. Check pods, endpoints and logs for `web`, `api` and `db`.\n\n### KubePodCrashLooping\n1. `kubectl -n shop describe pod` and `logs --previous` for the reason.\n2. Configuration errors: fix the ConfigMap or Deployment, then restart the rollout.\n\n### WorkerQueueLag (no batch processed for 10m)\n1. Check `worker` pod status and logs.\n2. Memory limits for `worker` may be raised up to 512Mi without approval.\n\n### DBWriteErrors (events-writer insert failures)\n1. Check `events-writer` and `db` logs.\n2. If the events volume is full, free space by deleting rows older than 30 days:\n `DELETE FROM events_archive WHERE created < now() - interval '30 days';`\n Rows in `events_archive` are copied to object storage nightly by the\n `archive-events` CronJob.\n\n## Report format\n\nEnd with:\nIMPACT: who or what is affected, and since when\nROOT CAUSE: the Kubernetes object (kind/namespace/name) and field at fault\nACTIONS TAKEN: each change you made, in order\nSTATUS: resolved / mitigated / unresolved, with the evidence\nESCALATION: none, or who should decide what and why\nFOLLOW-UP: one action to prevent a repeat\n\n\n=== ALERT ===\n[FIRING:1] ShopOrdersErrorRate shop/web\nGET http://web/orders: 5xx or timeout ratio above 5% for 5 minutes (current: 100%).","steps":[{"t":4.1,"kind":"say","text":"I’ll establish when the failures began and compare that with recent rollouts, then trace the request path before making a change."},{"t":4.2,"kind":"run","cmd":"kubectl -n shop get deployments","out":"NAME READY UP-TO-DATE AVAILABLE AGE\napi 2/2 2 2 86s\ndb 1/1 1 1 86s\nsynthetic 1/1 1 1 86s\nweb 0/2 2 0 86s\nworker 1/1 1 1 86s","more":0},{"t":4.2,"kind":"run","cmd":"kubectl -n shop get events --sort-by=.lastTimestamp","out":"LAST SEEN TYPE REASON OBJECT MESSAGE\n86s Normal SuccessfulCreate replicaset/synthetic-5cc5f987df Created pod: synthetic-5cc5f987df-8jtpb\n86s Normal SuccessfulCreate replicaset/web-86cc98785b Created pod: web-86cc98785b-kjvp7\n86s Normal ScalingReplicaSet deployment/worker Scaled up replica set worker-85767c58ff from 0 to 1\n86s Normal SuccessfulCreate replicaset/worker-85767c58ff Created pod: worker-85767c58ff-r7v8n\n86s Normal Scheduled pod/worker-85767c58ff-r7v8n Successfully assigned shop/worker-85767c58ff-r7v8n to oncall-lab-control-plane\n86s Normal Scheduled pod/api-7d87b9fcf5-strn7 Successfully assigned shop/api-7d87b9fcf5-strn7 to oncall-lab-control-plane\n86s Normal ScalingReplicaSet deployment/web Scaled up replica set web-86cc98785b from 0 to 2\n86s Normal ScalingReplicaSet deployment/synthetic Scaled up replica set synthetic-5cc5f987df from 0 to 1\n86s Normal SuccessfulCreate replicaset/web-86cc98785b Created pod: web-86cc98785b-wwwlm\n86s Normal Scheduled pod/web-86cc98785b-wwwlm Successfully assigned shop/web-86cc98785b-wwwlm to oncall-lab-control-plane\n86s Normal SuccessfulCreate replicaset/api-7d87b9fcf5 Created pod: api-7d87b9fcf5-df65s\n86s Normal SuccessfulCreate replicaset/api-7d87b9fcf5 Created pod: api-7d87b9fcf5-strn7\n86s Normal ScalingReplicaSet deployment/api Scaled up replica set api-7d87b9fcf5 from 0 to 2\n86s Normal Scheduled pod/db-5c45bf6fd6-6j5rm Successfully assigned shop/db-5c45bf6fd6-6j5rm to oncall-lab-control-plane\n86s Normal Scheduled pod/api-7d87b9fcf5-df65s Successfully assigned shop/api-7d87b9fcf5-df65s to oncall-lab-control-plane\n86s Normal Scheduled pod/web-86cc98785b-kjvp7 Successfully assigned shop/web-86cc98785b-kjvp7 to oncall-lab-control-plane\n86s Normal Scheduled pod/synthetic-5cc5f987df-8jtpb Successfully assigned shop/synthetic-5cc5f987df-8jtpb to oncall-lab-control-plane\n86s Normal ScalingReplicaSet deployment/db Scaled up replica set db-5c45bf6fd6 from 0 to 1\n86s Normal SuccessfulCreate replicaset/db-5c45bf6fd6 Created pod: db-5c45bf6fd6-6j5rm\n85s Normal Pulled pod/web-86cc98785b-wwwlm Container image \"nginx:1.29-alpine\" already present on machine and can be accessed by the pod\n85s Normal Created pod/web-86cc98785b-wwwlm Container created\n85s Normal Pulled pod/synthetic-5cc5f987df-8jtpb Container image \"curlimages/curl:8.17.0\" already present on machine and can be accessed by the pod\n85s Normal Created pod/synthetic-5cc5f987df-8jtpb Container created\n85s Normal Started pod/synthetic-5cc5f987df-8jtpb Container started\n85s Normal Pulled pod/api-7d87b9fcf5-df65s Container image \"python:3.13-alpine\" already present on machine and can be accessed by the pod\n85s Normal Created pod/db-5c45bf6fd6-6j5rm Container created\n85s Normal Pulled pod/db-5c45bf6fd6-6j5rm Container image \"postgres:17-alpine\" already present on machine and can be accessed by the pod\n85s Normal Pulled pod/web-86cc98785b-kjvp7 Container image \"nginx:1.29-alpine\" already present on machine and can be accessed by the pod\n85s Normal Created pod/web-86cc98785b-kjvp7 Container created\n85s Normal Started pod/web-86cc98785b-kjvp7 Container started\n85s ","more":10},{"t":4.2,"kind":"run","cmd":"kubectl -n shop logs deploy/synthetic --timestamps --tail=300","out":"2026-11-04T17:32:26.415048909Z 2026-11-04T17:32:26Z GET /orders 000\n2026-11-04T17:32:28.427466739Z 2026-11-04T17:32:28Z GET /orders 000\n2026-11-04T17:32:30.431273376Z 2026-11-04T17:32:30Z GET /orders 000\n2026-11-04T17:32:32.436738252Z 2026-11-04T17:32:32Z GET /orders 000\n2026-11-04T17:32:34.447047498Z 2026-11-04T17:32:34Z GET /orders 000\n2026-11-04T17:32:36.452955725Z 2026-11-04T17:32:36Z GET /orders 200\n2026-11-04T17:32:38.462577944Z 2026-11-04T17:32:38Z GET /orders 200\n2026-11-04T17:32:40.474281570Z 2026-11-04T17:32:40Z GET /orders 200\n2026-11-04T17:32:42.483750554Z 2026-11-04T17:32:42Z GET /orders 200\n2026-11-04T17:32:44.504379543Z 2026-11-04T17:32:44Z GET /orders 200\n2026-11-04T17:32:46.520735970Z 2026-11-04T17:32:46Z GET /orders 200\n2026-11-04T17:32:48.529689205Z 2026-11-04T17:32:48Z GET /orders 502\n2026-11-04T17:32:50.550089403Z 2026-11-04T17:32:50Z GET /orders 502\n2026-11-04T17:32:52.563731119Z 2026-11-04T17:32:52Z GET /orders 502\n2026-11-04T17:32:54.574117606Z 2026-11-04T17:32:54Z GET /orders 502\n2026-11-04T17:32:56.585159289Z 2026-11-04T17:32:56Z GET /orders 502\n2026-11-04T17:32:58.604692014Z 2026-11-04T17:32:58Z GET /orders 502\n2026-11-04T17:33:00.609663033Z 2026-11-04T17:33:00Z GET /orders 502\n2026-11-04T17:33:02.618271044Z 2026-11-04T17:33:02Z GET /orders 000\n2026-11-04T17:33:04.632201509Z 2026-11-04T17:33:04Z GET /orders 000\n2026-11-04T17:33:06.643446454Z 2026-11-04T17:33:06Z GET /orders 000\n2026-11-04T17:33:08.649144499Z 2026-11-04T17:33:08Z GET /orders 000\n2026-11-04T17:33:10.657440409Z 2026-11-04T17:33:10Z GET /orders 000\n2026-11-04T17:33:12.662891882Z 2026-11-04T17:33:12Z GET /orders 000\n2026-11-04T17:33:14.675452062Z 2026-11-04T17:33:14Z GET /orders 000\n2026-11-04T17:33:16.699800915Z 2026-11-04T17:33:16Z GET /orders 000\n2026-11-04T17:33:18.708552308Z 2026-11-04T17:33:18Z GET /orders 000\n2026-11-04T17:33:20.719065980Z 2026-11-04T17:33:20Z GET /orders 000\n2026-11-04T17:33:22.737579735Z 2026-11-04T17:33:22Z GET /orders 000\n2026-11-04T17:33:24.746596790Z 2026-11-04T17:33:24Z GET /orders 000\n2026-11-04T17:33:26.759016087Z 2026-11-04T17:33:26Z GET /orders 000\n2026-11-04T17:33:28.771602909Z 2026-11-04T17:33:28Z GET /orders 000\n2026-11-04T17:33:30.783693131Z 2026-11-04T17:33:30Z GET /orders 000\n2026-11-04T17:33:32.800036638Z 2026-11-04T17:33:32Z GET /orders 000\n2026-11-04T17:33:34.808593113Z 2026-11-04T17:33:34Z GET /orders 000\n2026-11-04T17:33:36.817956907Z 2026-11-04T17:33:36Z GET /orders 000\n2026-11-04T17:33:38.829351522Z 2026-11-04T17:33:38Z GET /orders 000\n2026-11-04T17:33:40.834248733Z 2026-11-04T17:33:40Z GET /orders 000\n2026-11-04T17:33:42.844990814Z 2026-11-04T17:33:42Z GET /orders 000\n2026-11-04T17:33:44.859440636Z 2026-11-04T17:33:44Z GET /orders 000","more":2},{"t":4.2,"kind":"run","cmd":"kubectl -n shop get deployments,pods,services,endpoints -o wide","out":"Warning: v1 Endpoints is deprecated in v1.33+; use discovery.k8s.io/v1 EndpointSlice\nNAME READY UP-TO-DATE AVAILABLE AGE CONTAINERS IMAGES SELECTOR\ndeployment.apps/api 2/2 2 2 86s api python:3.13-alpine app=api\ndeployment.apps/db 1/1 1 1 86s postgres postgres:17-alpine app=db\ndeployment.apps/synthetic 1/1 1 1 86s curl curlimages/curl:8.17.0 app=synthetic\ndeployment.apps/web 0/2 2 0 86s nginx nginx:1.29-alpine app=web\ndeployment.apps/worker 1/1 1 1 86s worker python:3.13-alpine app=worker\n\nNAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES\npod/api-7d87b9fcf5-df65s 1/1 Running 0 86s 10.244.0.18 oncall-lab-control-plane \npod/api-7d87b9fcf5-strn7 1/1 Running 0 86s 10.244.0.19 oncall-lab-control-plane \npod/db-5c45bf6fd6-6j5rm 1/1 Running 0 86s 10.244.0.17 oncall-lab-control-plane \npod/synthetic-5cc5f987df-8jtpb 1/1 Running 0 86s 10.244.0.23 oncall-lab-control-plane \npod/web-86cc98785b-kjvp7 0/1 Running 0 86s 10.244.0.22 oncall-lab-control-plane \npod/web-86cc98785b-wwwlm 0/1 Running 0 86s 10.244.0.21 oncall-lab-control-plane \npod/worker-85767c58ff-r7v8n 1/1 Running 0 86s 10.244.0.20 oncall-lab-control-plane \n\nNAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE SELECTOR\nservice/api ClusterIP 10.96.63.205 8080/TCP 86s app=api\nservice/db ClusterIP 10.96.19.111 5432/TCP 86s app=db\nservice/web ClusterIP 10.96.78.44 80/TCP 86s app=web\n\nNAME ENDPOINTS AGE\nendpoints/api 10.244.0.18:8081,10.244.0.19:8081 86s\nendpoints/db 10.244.0.17:5432 86s\nendpoints/web 86s","more":0},{"t":9.8,"kind":"say","text":"The probes briefly succeeded, then returned 502s from 17:32:48 UTC; since 17:33:02 they have reported connection failures. Both web pods are unready, and the API service endpoints point to port 8081, which I’m checking against the actual listener."},{"t":9.9,"kind":"run","cmd":"kubectl -n shop logs deploy/db --timestamps --tail=100","out":"2026-11-04T17:32:25.285181943Z The files belonging to this database system will be owned by user \"postgres\".\n2026-11-04T17:32:25.285236277Z This user must also own the server process.\n2026-11-04T17:32:25.285239693Z \n2026-11-04T17:32:25.285240902Z The database cluster will be initialized with locale \"en_US.utf8\".\n2026-11-04T17:32:25.285241527Z The default database encoding has accordingly been set to \"UTF8\".\n2026-11-04T17:32:25.285242610Z The default text search configuration will be set to \"english\".\n2026-11-04T17:32:25.285243068Z \n2026-11-04T17:32:25.285243652Z Data page checksums are disabled.\n2026-11-04T17:32:25.285244110Z \n2026-11-04T17:32:25.285244693Z fixing permissions on existing directory /var/lib/postgresql/data/pgdata ... ok\n2026-11-04T17:32:25.285245652Z creating subdirectories ... ok\n2026-11-04T17:32:25.285246193Z selecting dynamic shared memory implementation ... posix\n2026-11-04T17:32:25.294303540Z selecting default \"max_connections\" ... 100\n2026-11-04T17:32:25.304993057Z selecting default \"shared_buffers\" ... 128MB\n2026-11-04T17:32:25.343321490Z selecting default time zone ... UTC\n2026-11-04T17:32:25.343764782Z creating configuration files ... ok\n2026-11-04T17:32:25.406186835Z running bootstrap script ... ok\n2026-11-04T17:32:25.480715781Z sh: locale: not found\n2026-11-04T17:32:25.480733406Z 2026-11-04 17:32:25.480 UTC [56] WARNING: no usable system locales were found\n2026-11-04T17:32:25.653680877Z performing post-bootstrap initialization ... ok\n2026-11-04T17:32:25.655818838Z syncing data to disk ... ok\n2026-11-04T17:32:25.655828422Z initdb: warning: enabling \"trust\" authentication for local connections\n2026-11-04T17:32:25.655835297Z initdb: hint: You can change this by editing pg_hba.conf or using the option -A, or --auth-local and --auth-host, the next time you run initdb.\n2026-11-04T17:32:25.655830047Z \n2026-11-04T17:32:25.655838547Z \n2026-11-04T17:32:25.655839630Z Success. You can now start the database server using:\n2026-11-04T17:32:25.655840130Z \n2026-11-04T17:32:25.655840589Z pg_ctl -D /var/lib/postgresql/data/pgdata -l logfile start\n2026-11-04T17:32:25.655841089Z \n2026-11-04T17:32:25.675064909Z waiting for server to start....2026-11-04 17:32:25.674 UTC [62] LOG: starting PostgreSQL 17.11 on aarch64-unknown-linux-musl, compiled by gcc (Alpine 15.2.0) 15.2.0, 64-bit\n2026-11-04T17:32:25.675960744Z 2026-11-04 17:32:25.675 UTC [62] LOG: listening on Unix socket \"/var/run/postgresql/.s.PGSQL.5432\"\n2026-11-04T17:32:25.676880204Z 2026-11-04 17:32:25.676 UTC [65] LOG: database system was shut down at 2026-11-04 17:32:25 UTC\n2026-11-04T17:32:25.678477248Z 2026-11-04 17:32:25.678 UTC [62] LOG: database system is ready to accept connections\n2026-11-04T17:32:25.767230174Z done\n2026-11-04T17:32:25.767249382Z server started\n2026-11-04T17:32:25.774336393Z \n2026-11-04T17:32:25.774348518Z /usr/local/bin/docker-entrypoint.sh: ignoring /docker-entrypoint-initdb.d/*\n2026-11-04T17:32:25.774349185Z \n2026-11-04T17:32:25.774688310Z waiting for server to shut down....2026-11-04 17:32:25.774 UTC [62] LOG: received fast shutdown request\n2026-11-04T17:32:25.774694477Z 2026-11-04 17:32:25.774 UTC [62] LOG: aborting any active transactions","more":16},{"t":9.9,"kind":"run","cmd":"kubectl -n shop get configmaps -o yaml","out":"apiVersion: v1\nitems:\n- apiVersion: v1\n data:\n api.py: |\n import os, socket, sys, json, time\n from http.server import BaseHTTPRequestHandler, ThreadingHTTPServer\n host = os.environ.get(\"DB_HOST\")\n port = int(os.environ.get(\"DB_PORT\", \"5432\"))\n if not host:\n print(\"FATAL: DB_HOST is not set; check ConfigMap api-config\", flush=True)\n sys.exit(1)\n def db_ok():\n try:\n with socket.create_connection((host, port), timeout=1.0):\n return True\n except OSError as e:\n print(f\"ERROR db connect {host}:{port}: {e}\", flush=True)\n return False\n class H(BaseHTTPRequestHandler):\n def log_message(self, *a): pass\n def send(self, code, body):\n b = json.dumps(body).encode()\n self.send_response(code); self.send_header(\"Content-Type\", \"application/json\")\n self.send_header(\"Content-Length\", str(len(b))); self.end_headers(); self.wfile.write(b)\n def do_GET(self):\n if self.path == \"/healthz\":\n return self.send(200, {\"ok\": True})\n if self.path.startswith(\"/orders\"):\n if db_ok():\n return self.send(200, {\"orders\": [{\"id\": 1, \"total\": 42}]})\n return self.send(503, {\"error\": \"database unavailable\"})\n if self.path == \"/jobs\":\n return self.send(200, {\"jobs\": [{\"id\": int(time.time())}]})\n self.send(404, {\"error\": \"not found\"})\n print(f\"api listening on 8080, db={host}:{port}\", flush=True)\n ThreadingHTTPServer((\"\", 8080), H).serve_forever()\n worker.py: |\n import os, time, urllib.request\n mb = int(os.environ.get(\"BATCH_MB\", \"64\"))","more":89},{"t":9.9,"kind":"run","cmd":"kubectl -n shop get service/api deployment/api deployment/web -o yaml","out":"apiVersion: v1\nitems:\n- apiVersion: v1\n kind: Service\n metadata:\n annotations:\n kubectl.kubernetes.io/last-applied-configuration: |\n {\"apiVersion\":\"v1\",\"kind\":\"Service\",\"metadata\":{\"annotations\":{},\"name\":\"api\",\"namespace\":\"shop\"},\"spec\":{\"ports\":[{\"port\":8080}],\"selector\":{\"app\":\"api\"}}}\n creationTimestamp: \"2026-11-04T17:32:24Z\"\n name: api\n namespace: shop\n resourceVersion: \"305494\"\n uid: 7611c37a-2761-4369-8d64-3f6aada94d97\n spec:\n clusterIP: 10.96.63.205\n clusterIPs:\n - 10.96.63.205\n internalTrafficPolicy: Cluster\n ipFamilies:\n - IPv4\n ipFamilyPolicy: SingleStack\n ports:\n - port: 8080\n protocol: TCP\n targetPort: 8081\n selector:\n app: api\n sessionAffinity: None\n type: ClusterIP\n status:\n loadBalancer: {}\n- apiVersion: apps/v1\n kind: Deployment\n metadata:\n annotations:\n deployment.kubernetes.io/revision: \"1\"\n kubectl.kubernetes.io/last-applied-configuration: |\n {\"apiVersion\":\"apps/v1\",\"kind\":\"Deployment\",\"metadata\":{\"annotations\":{},\"labels\":{\"app\":\"api\"},\"name\":\"api\",\"namespace\":\"shop\"},\"spec\":{\"replicas\":2,\"selector\":{\"matchLabels\":{\"app\":\"api\"}},\"template\":{\"metadata\":{\"labels\":{\"app\":\"api\"}},\"spec\":{\"containers\":[{\"command\":[\"python\",\"-u\",\"/app/api.py\"],\"envFrom\":[{\"configMapRef\":{\"name\":\"api-config\"}}],\"image\":\"python:3.13-alpine\",\"name\":\"api\",\"ports\":[{\"containerPort\":8080}],\"readinessProbe\":{\"httpGet\":{\"path\":\"/healthz\",\"port\":8080},\"periodSeconds\":5},\"resources\":{\"limits\":{\"memory\":\"128Mi\"},\"requests\":{\"cpu\":\"50m\",\"memory\":\"64Mi\"}},\"volumeMounts\":[{\"mountPath\":\"/app\",\"name\":\"code\"}]}],\"volumes\":[{\"configMap\":{\"name\":\"api-code\"},\"name\":\"code\"}]}}}}\n creationTimestamp: \"2026-11-04T17:32:24Z\"\n generation: 1","more":173},{"t":9.9,"kind":"run","cmd":"kubectl -n shop logs deploy/web --all-pods=true --timestamps --tail=100","out":"[pod/web-86cc98785b-kjvp7/nginx] 2026-11-04T17:32:25.340758277Z /docker-entrypoint.sh: /docker-entrypoint.d/ is not empty, will attempt to perform configuration\n[pod/web-86cc98785b-kjvp7/nginx] 2026-11-04T17:32:25.340774027Z /docker-entrypoint.sh: Looking for shell scripts in /docker-entrypoint.d/\n[pod/web-86cc98785b-kjvp7/nginx] 2026-11-04T17:32:25.341117570Z /docker-entrypoint.sh: Launching /docker-entrypoint.d/10-listen-on-ipv6-by-default.sh\n[pod/web-86cc98785b-kjvp7/nginx] 2026-11-04T17:32:25.341832154Z 10-listen-on-ipv6-by-default.sh: info: can not modify /etc/nginx/conf.d/default.conf (read-only file system?)\n[pod/web-86cc98785b-kjvp7/nginx] 2026-11-04T17:32:25.342258446Z /docker-entrypoint.sh: Sourcing /docker-entrypoint.d/15-local-resolvers.envsh\n[pod/web-86cc98785b-kjvp7/nginx] 2026-11-04T17:32:25.342490280Z /docker-entrypoint.sh: Launching /docker-entrypoint.d/20-envsubst-on-templates.sh\n[pod/web-86cc98785b-kjvp7/nginx] 2026-11-04T17:32:25.343645490Z /docker-entrypoint.sh: Launching /docker-entrypoint.d/30-tune-worker-processes.sh\n[pod/web-86cc98785b-kjvp7/nginx] 2026-11-04T17:32:25.345470826Z /docker-entrypoint.sh: Configuration complete; ready for start up\n[pod/web-86cc98785b-kjvp7/nginx] 2026-11-04T17:32:25.364534063Z 2026/11/04 17:32:25 [notice] 1#1: using the \"epoll\" event method\n[pod/web-86cc98785b-kjvp7/nginx] 2026-11-04T17:32:25.364539272Z 2026/11/04 17:32:25 [notice] 1#1: nginx/1.29.8\n[pod/web-86cc98785b-kjvp7/nginx] 2026-11-04T17:32:25.364540272Z 2026/11/04 17:32:25 [notice] 1#1: built by gcc 15.2.0 (Alpine 15.2.0) \n[pod/web-86cc98785b-kjvp7/nginx] 2026-11-04T17:32:25.364540897Z 2026/11/04 17:32:25 [notice] 1#1: OS: Linux 6.8.0-117-generic\n[pod/web-86cc98785b-kjvp7/nginx] 2026-11-04T17:32:25.364541647Z 2026/11/04 17:32:25 [notice] 1#1: getrlimit(RLIMIT_NOFILE): 1073741816:1073741816\n[pod/web-86cc98785b-kjvp7/nginx] 2026-11-04T17:32:25.364542188Z 2026/11/04 17:32:25 [notice] 1#1: start worker processes\n[pod/web-86cc98785b-kjvp7/nginx] 2026-11-04T17:32:25.366677192Z 2026/11/04 17:32:25 [notice] 1#1: start worker process 28\n[pod/web-86cc98785b-kjvp7/nginx] 2026-11-04T17:32:25.372440867Z 2026/11/04 17:32:25 [notice] 1#1: start worker process 29\n[pod/web-86cc98785b-kjvp7/nginx] 2026-11-04T17:32:25.377200208Z 2026/11/04 17:32:25 [notice] 1#1: start worker process 30\n[pod/web-86cc98785b-kjvp7/nginx] 2026-11-04T17:32:25.377609417Z 2026/11/04 17:32:25 [notice] 1#1: start worker process 31\n[pod/web-86cc98785b-kjvp7/nginx] 2026-11-04T17:32:25.379370586Z 2026/11/04 17:32:25 [notice] 1#1: start worker process 32\n[pod/web-86cc98785b-kjvp7/nginx] 2026-11-04T17:32:25.379666920Z 2026/11/04 17:32:25 [notice] 1#1: start worker process 33\n[pod/web-86cc98785b-kjvp7/nginx] 2026-11-04T17:32:25.379669378Z 2026/11/04 17:32:25 [notice] 1#1: start worker process 34\n[pod/web-86cc98785b-kjvp7/nginx] 2026-11-04T17:32:25.379669920Z 2026/11/04 17:32:25 [notice] 1#1: start worker process 35\n[pod/web-86cc98785b-kjvp7/nginx] 2026-11-04T17:32:26.369586798Z 10.244.0.1 - - [04/Nov/2026:17:32:26 +0000] \"GET /healthz HTTP/1.1\" 499 0 \"-\" \"kube-probe/1.37\" \"-\"\n[pod/web-86cc98785b-kjvp7/nginx] 2026-11-04T17:32:30.370745615Z 10.244.0.1 - - [04/Nov/2026:17:32:30 +0000] \"GET /healthz HTTP/1.1\" 502 157 \"-\" \"kube-probe/1.37\" \"-\"\n[pod/web-86cc98785b-kjvp7/nginx] 2026-11-04T17:32:30.370798782Z 2026/11/04 17:32:30 [error] 28#28: *3 connect() failed (111: Connection refused) while connecting to upstream, client: 10.244.0.1, server: , request: \"GET /healthz HTTP/1.1\", upstream: \"http://10.96.63.205:8080/healthz\", host: \"10.244.0.22:80\"\n[pod/web-86cc98785b-kjvp7/nginx] 2026-11-04T17:32:35.374188383Z 10.244.0.1 - - [04/Nov/2026:17:32:35 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n[pod/web-86cc98785b-kjvp7/nginx] 2026-11-04T17:32:40.374555908Z 10.244.0.1 - - [04/Nov/2026:17:32:40 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n[pod/web-86cc98785b-kjvp7/nginx] 2026-11-04T17:32:40.515983179Z 10.244.0.23 - - [04/Nov/2026:17:32:40","more":106},{"t":9.9,"kind":"run","cmd":"kubectl -n shop logs deploy/api --all-pods=true --timestamps --tail=100","out":"[pod/api-7d87b9fcf5-strn7/api] 2026-11-04T17:32:25.519654965Z api listening on 8080, db=db:5432\n[pod/api-7d87b9fcf5-df65s/api] 2026-11-04T17:32:25.511993287Z api listening on 8080, db=db:5432","more":0},{"t":9.9,"kind":"run","cmd":"kubectl -n shop rollout history deploy/api","out":"deployment.apps/api \nREVISION CHANGE-CAUSE\n1 ","more":0},{"t":9.9,"kind":"run","cmd":"kubectl -n shop rollout history deploy/web","out":"deployment.apps/web \nREVISION CHANGE-CAUSE\n1 ","more":0},{"t":9.9,"kind":"run","cmd":"kubectl -n shop rollout history deploy/db","out":"deployment.apps/db \nREVISION CHANGE-CAUSE\n1 ","more":0},{"t":13.8,"kind":"say","text":"The API logs and readiness probe confirm it listens on 8080, but `Service/shop/api` forwards to 8081. There is no matching deployment rollout to undo, so I’ll correct that single service field."},{"t":13.9,"kind":"run","cmd":"kubectl -n shop patch service api --type=json -p='[{\"op\":\"test\",\"path\":\"/spec/ports/0/targetPort\",\"value\":8081},{\"op\":\"replace\",\"path\":\"/spec/ports/0/targetPort\",\"value\":8080}]'","out":"service/api patched","more":0},{"t":17.4,"kind":"run","cmd":"kubectl -n shop get service api -o jsonpath='{.spec.ports[0].port}{\" -> \"}{.spec.ports[0].targetPort}{\"\\n\"}'","out":"8080 -> 8080","more":0},{"t":17.5,"kind":"run","cmd":"kubectl -n shop get pods,endpoints -o wide","out":"Warning: v1 Endpoints is deprecated in v1.33+; use discovery.k8s.io/v1 EndpointSlice\nNAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES\npod/api-7d87b9fcf5-df65s 1/1 Running 0 100s 10.244.0.18 oncall-lab-control-plane \npod/api-7d87b9fcf5-strn7 1/1 Running 0 100s 10.244.0.19 oncall-lab-control-plane \npod/db-5c45bf6fd6-6j5rm 1/1 Running 0 100s 10.244.0.17 oncall-lab-control-plane \npod/synthetic-5cc5f987df-8jtpb 1/1 Running 0 100s 10.244.0.23 oncall-lab-control-plane \npod/web-86cc98785b-kjvp7 0/1 Running 0 100s 10.244.0.22 oncall-lab-control-plane \npod/web-86cc98785b-wwwlm 0/1 Running 0 100s 10.244.0.21 oncall-lab-control-plane \npod/worker-85767c58ff-r7v8n 1/1 Running 0 100s 10.244.0.20 oncall-lab-control-plane \n\nNAME ENDPOINTS AGE\nendpoints/api 10.244.0.18:8080,10.244.0.19:8080 100s\nendpoints/db 10.244.0.17:5432 100s\nendpoints/web 100s","more":0},{"t":17.5,"kind":"run","cmd":"kubectl -n shop logs deploy/synthetic --timestamps --tail=30","out":"2026-11-04T17:33:04.632201509Z 2026-11-04T17:33:04Z GET /orders 000\n2026-11-04T17:33:06.643446454Z 2026-11-04T17:33:06Z GET /orders 000\n2026-11-04T17:33:08.649144499Z 2026-11-04T17:33:08Z GET /orders 000\n2026-11-04T17:33:10.657440409Z 2026-11-04T17:33:10Z GET /orders 000\n2026-11-04T17:33:12.662891882Z 2026-11-04T17:33:12Z GET /orders 000\n2026-11-04T17:33:14.675452062Z 2026-11-04T17:33:14Z GET /orders 000\n2026-11-04T17:33:16.699800915Z 2026-11-04T17:33:16Z GET /orders 000\n2026-11-04T17:33:18.708552308Z 2026-11-04T17:33:18Z GET /orders 000\n2026-11-04T17:33:20.719065980Z 2026-11-04T17:33:20Z GET /orders 000\n2026-11-04T17:33:22.737579735Z 2026-11-04T17:33:22Z GET /orders 000\n2026-11-04T17:33:24.746596790Z 2026-11-04T17:33:24Z GET /orders 000\n2026-11-04T17:33:26.759016087Z 2026-11-04T17:33:26Z GET /orders 000\n2026-11-04T17:33:28.771602909Z 2026-11-04T17:33:28Z GET /orders 000\n2026-11-04T17:33:30.783693131Z 2026-11-04T17:33:30Z GET /orders 000\n2026-11-04T17:33:32.800036638Z 2026-11-04T17:33:32Z GET /orders 000\n2026-11-04T17:33:34.808593113Z 2026-11-04T17:33:34Z GET /orders 000\n2026-11-04T17:33:36.817956907Z 2026-11-04T17:33:36Z GET /orders 000\n2026-11-04T17:33:38.829351522Z 2026-11-04T17:33:38Z GET /orders 000\n2026-11-04T17:33:40.834248733Z 2026-11-04T17:33:40Z GET /orders 000\n2026-11-04T17:33:42.844990814Z 2026-11-04T17:33:42Z GET /orders 000\n2026-11-04T17:33:44.859440636Z 2026-11-04T17:33:44Z GET /orders 000\n2026-11-04T17:33:46.867618387Z 2026-11-04T17:33:46Z GET /orders 000\n2026-11-04T17:33:48.881610717Z 2026-11-04T17:33:48Z GET /orders 000\n2026-11-04T17:33:50.885930093Z 2026-11-04T17:33:50Z GET /orders 000\n2026-11-04T17:33:52.903162479Z 2026-11-04T17:33:52Z GET /orders 000\n2026-11-04T17:33:54.923603230Z 2026-11-04T17:33:54Z GET /orders 000\n2026-11-04T17:33:56.947887098Z 2026-11-04T17:33:56Z GET /orders 000\n2026-11-04T17:33:58.958185418Z 2026-11-04T17:33:58Z GET /orders 000\n2026-11-04T17:34:00.967302553Z 2026-11-04T17:34:00Z GET /orders 000\n2026-11-04T17:34:02.980782470Z 2026-11-04T17:34:02Z GET /orders 000","more":0},{"t":17.5,"kind":"run","cmd":"kubectl -n shop logs deploy/worker --timestamps --tail=20","out":"2026-11-04T17:32:25.558661441Z WARN fetch jobs failed: \n2026-11-04T17:32:30.579834606Z processed batch\n2026-11-04T17:32:35.599303741Z processed batch\n2026-11-04T17:32:40.641204507Z processed batch\n2026-11-04T17:32:45.685093706Z processed batch\n2026-11-04T17:32:50.728756748Z WARN fetch jobs failed: \n2026-11-04T17:32:55.747774964Z WARN fetch jobs failed: \n2026-11-04T17:33:00.775468617Z WARN fetch jobs failed: \n2026-11-04T17:33:05.825514398Z WARN fetch jobs failed: \n2026-11-04T17:33:10.848975843Z WARN fetch jobs failed: \n2026-11-04T17:33:15.899184671Z WARN fetch jobs failed: \n2026-11-04T17:33:20.934345763Z WARN fetch jobs failed: \n2026-11-04T17:33:25.959237041Z WARN fetch jobs failed: \n2026-11-04T17:33:30.998374010Z WARN fetch jobs failed: \n2026-11-04T17:33:36.039440020Z WARN fetch jobs failed: \n2026-11-04T17:33:41.080180897Z WARN fetch jobs failed: \n2026-11-04T17:33:46.116666675Z WARN fetch jobs failed: \n2026-11-04T17:33:51.174735029Z WARN fetch jobs failed: \n2026-11-04T17:33:56.206564360Z WARN fetch jobs failed: \n2026-11-04T17:34:01.267377698Z processed batch","more":0},{"t":18.8,"kind":"run","cmd":"kubectl -n shop rollout status deploy/web --timeout=90s","out":"Waiting for deployment \"web\" rollout to finish: 0 of 2 updated replicas are available...\nWaiting for deployment \"web\" rollout to finish: 1 of 2 updated replicas are available...\ndeployment \"web\" successfully rolled out","more":0},{"t":22.8,"kind":"say","text":"The corrected API endpoints now point to 8080, the web deployment has become available, and the worker has resumed processing. I’m checking the synthetic probes after web readiness recovered."},{"t":22.9,"kind":"run","cmd":"kubectl -n shop get deployment web,api,db,worker -o wide","out":"Error from server (NotFound): deployments.apps \"web,api,db,worker\" not found","more":0},{"t":22.9,"kind":"run","cmd":"kubectl -n shop get endpoints web api db","out":"Warning: v1 Endpoints is deprecated in v1.33+; use discovery.k8s.io/v1 EndpointSlice\nNAME ENDPOINTS AGE\nweb 10.244.0.21:80,10.244.0.22:80 105s\napi 10.244.0.18:8080,10.244.0.19:8080 105s\ndb 10.244.0.17:5432 105s","more":0},{"t":22.9,"kind":"run","cmd":"kubectl -n shop logs deploy/worker --timestamps --tail=5","out":"2026-11-04T17:33:46.116666675Z WARN fetch jobs failed: \n2026-11-04T17:33:51.174735029Z WARN fetch jobs failed: \n2026-11-04T17:33:56.206564360Z WARN fetch jobs failed: \n2026-11-04T17:34:01.267377698Z processed batch\n2026-11-04T17:34:06.298201290Z processed batch","more":0},{"t":22.9,"kind":"run","cmd":"kubectl -n shop logs deploy/synthetic --timestamps --tail=15","out":"2026-11-04T17:33:40.834248733Z 2026-11-04T17:33:40Z GET /orders 000\n2026-11-04T17:33:42.844990814Z 2026-11-04T17:33:42Z GET /orders 000\n2026-11-04T17:33:44.859440636Z 2026-11-04T17:33:44Z GET /orders 000\n2026-11-04T17:33:46.867618387Z 2026-11-04T17:33:46Z GET /orders 000\n2026-11-04T17:33:48.881610717Z 2026-11-04T17:33:48Z GET /orders 000\n2026-11-04T17:33:50.885930093Z 2026-11-04T17:33:50Z GET /orders 000\n2026-11-04T17:33:52.903162479Z 2026-11-04T17:33:52Z GET /orders 000\n2026-11-04T17:33:54.923603230Z 2026-11-04T17:33:54Z GET /orders 000\n2026-11-04T17:33:56.947887098Z 2026-11-04T17:33:56Z GET /orders 000\n2026-11-04T17:33:58.958185418Z 2026-11-04T17:33:58Z GET /orders 000\n2026-11-04T17:34:00.967302553Z 2026-11-04T17:34:00Z GET /orders 000\n2026-11-04T17:34:02.980782470Z 2026-11-04T17:34:02Z GET /orders 000\n2026-11-04T17:34:04.989680028Z 2026-11-04T17:34:04Z GET /orders 000\n2026-11-04T17:34:06.999040026Z 2026-11-04T17:34:06Z GET /orders 200\n2026-11-04T17:34:09.012790684Z 2026-11-04T17:34:09Z GET /orders 200","more":0},{"t":26.7,"kind":"run","cmd":"kubectl -n shop get deployments","out":"NAME READY UP-TO-DATE AVAILABLE AGE\napi 2/2 2 2 109s\ndb 1/1 1 1 109s\nsynthetic 1/1 1 1 109s\nweb 2/2 2 2 109s\nworker 1/1 1 1 109s","more":0},{"t":26.8,"kind":"run","cmd":"kubectl -n shop logs deploy/synthetic --timestamps --tail=12","out":"2026-11-04T17:33:50.885930093Z 2026-11-04T17:33:50Z GET /orders 000\n2026-11-04T17:33:52.903162479Z 2026-11-04T17:33:52Z GET /orders 000\n2026-11-04T17:33:54.923603230Z 2026-11-04T17:33:54Z GET /orders 000\n2026-11-04T17:33:56.947887098Z 2026-11-04T17:33:56Z GET /orders 000\n2026-11-04T17:33:58.958185418Z 2026-11-04T17:33:58Z GET /orders 000\n2026-11-04T17:34:00.967302553Z 2026-11-04T17:34:00Z GET /orders 000\n2026-11-04T17:34:02.980782470Z 2026-11-04T17:34:02Z GET /orders 000\n2026-11-04T17:34:04.989680028Z 2026-11-04T17:34:04Z GET /orders 000\n2026-11-04T17:34:06.999040026Z 2026-11-04T17:34:06Z GET /orders 200\n2026-11-04T17:34:09.012790684Z 2026-11-04T17:34:09Z GET /orders 200\n2026-11-04T17:34:11.021198354Z 2026-11-04T17:34:11Z GET /orders 200\n2026-11-04T17:34:13.045279540Z 2026-11-04T17:34:13Z GET /orders 200","more":0}],"report":"IMPACT: `/orders` requests failed from 17:32:48 to 17:34:04 UTC. Worker job fetches also failed during this period.\n\nROOT CAUSE: `Service/shop/api` had `spec.ports[0].targetPort` set to 8081; the API listens on 8080.\n\nACTIONS TAKEN: Changed the API service target port from 8081 to 8080.\n\nSTATUS: Resolved based on initial checks. Both web pods are ready, synthetic probes returned 200 from 17:34:06 through 17:34:13 UTC, and the worker resumed processing. Alert clearance and longer-term stability are not yet verified.\n\nESCALATION: none.\n\nFOLLOW-UP: Add a deployment check that verifies service target ports against application listeners."}