{"id":"s1-gpt-6-1-terra-r1","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/<name>`.\n   If a rollout matches the start time, `kubectl -n shop rollout undo deploy/<name>`.\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] KubePodCrashLooping shop/api\nPod shop/api-* (container api) is restarting repeatedly (3 restarts in 5m).","steps":[{"t":3.8,"kind":"say","text":"I’ll check the crashing API pod’s previous logs and configuration, then make the smallest authorized fix and verify service health."},{"t":3.9,"kind":"run","cmd":"kubectl -n shop get pods -o wide","out":"NAME                         READY   STATUS             RESTARTS      AGE   IP             NODE                       NOMINATED NODE   READINESS GATES\napi-6b9c579fc6-jzr8m         0/1     CrashLoopBackOff   3 (26s ago)   64s   10.244.0.174   oncall-lab-control-plane   <none>           <none>\napi-7d87b9fcf5-jrj7f         1/1     Running            0             81s   10.244.0.169   oncall-lab-control-plane   <none>           <none>\napi-7d87b9fcf5-lb8x9         1/1     Running            0             81s   10.244.0.168   oncall-lab-control-plane   <none>           <none>\ndb-5c45bf6fd6-2m79d          1/1     Running            0             82s   10.244.0.167   oncall-lab-control-plane   <none>           <none>\nsynthetic-5cc5f987df-qv4f2   1/1     Running            0             81s   10.244.0.173   oncall-lab-control-plane   <none>           <none>\nweb-86cc98785b-7vvvn         1/1     Running            0             81s   10.244.0.172   oncall-lab-control-plane   <none>           <none>\nweb-86cc98785b-xhbzf         1/1     Running            0             81s   10.244.0.171   oncall-lab-control-plane   <none>           <none>\nworker-85767c58ff-ljlc5      1/1     Running            0             81s   10.244.0.170   oncall-lab-control-plane   <none>           <none>","more":0},{"t":3.9,"kind":"run","cmd":"kubectl -n shop get events --sort-by=.lastTimestamp","out":"LAST SEEN   TYPE      REASON              OBJECT                            MESSAGE\n82s         Normal    SuccessfulCreate    replicaset/db-5c45bf6fd6          Created pod: db-5c45bf6fd6-2m79d\n82s         Normal    ScalingReplicaSet   deployment/db                     Scaled up replica set db-5c45bf6fd6 from 0 to 1\n81s         Normal    Pulled              pod/api-7d87b9fcf5-lb8x9          Container image \"python:3.13-alpine\" already present on machine and can be accessed by the pod\n81s         Normal    Created             pod/db-5c45bf6fd6-2m79d           Container created\n81s         Normal    ScalingReplicaSet   deployment/worker                 Scaled up replica set worker-85767c58ff from 0 to 1\n81s         Normal    SuccessfulCreate    replicaset/worker-85767c58ff      Created pod: worker-85767c58ff-ljlc5\n81s         Normal    Started             pod/worker-85767c58ff-ljlc5       Container started\n81s         Normal    Scheduled           pod/api-7d87b9fcf5-jrj7f          Successfully assigned shop/api-7d87b9fcf5-jrj7f to oncall-lab-control-plane\n81s         Normal    Pulled              pod/api-7d87b9fcf5-jrj7f          Container image \"python:3.13-alpine\" already present on machine and can be accessed by the pod\n81s         Normal    Created             pod/api-7d87b9fcf5-jrj7f          Container created\n81s         Normal    Started             pod/api-7d87b9fcf5-jrj7f          Container started\n81s         Warning   Unhealthy           pod/api-7d87b9fcf5-jrj7f          Readiness probe failed: Get \"http://10.244.0.169:8080/healthz\": dial tcp 10.244.0.169:8080: connect: connection refused\n81s         Normal    Scheduled           pod/api-7d87b9fcf5-lb8x9          Successfully assigned shop/api-7d87b9fcf5-lb8x9 to oncall-lab-control-plane\n81s         Normal    Created             pod/worker-85767c58ff-ljlc5       Container created\n81s         Normal    Created             pod/api-7d87b9fcf5-lb8x9          Container created\n81s         Normal    Started             pod/api-7d87b9fcf5-lb8x9          Container started\n81s         Warning   Unhealthy           pod/api-7d87b9fcf5-lb8x9          Readiness probe failed: Get \"http://10.244.0.168:8080/healthz\": dial tcp 10.244.0.168:8080: connect: connection refused\n81s         Normal    SuccessfulCreate    replicaset/api-7d87b9fcf5         Created pod: api-7d87b9fcf5-lb8x9\n81s         Normal    SuccessfulCreate    replicaset/api-7d87b9fcf5         Created pod: api-7d87b9fcf5-jrj7f\n81s         Normal    ScalingReplicaSet   deployment/api                    Scaled up replica set api-7d87b9fcf5 from 0 to 2\n81s         Normal    Pulled              pod/worker-85767c58ff-ljlc5       Container image \"python:3.13-alpine\" already present on machine and can be accessed by the pod\n81s         Normal    Scheduled           pod/db-5c45bf6fd6-2m79d           Successfully assigned shop/db-5c45bf6fd6-2m79d to oncall-lab-control-plane\n81s         Normal    Pulled              pod/db-5c45bf6fd6-2m79d           Container image \"postgres:17-alpine\" already present on machine and can be accessed by the pod\n81s         Normal    Created             pod/synthetic-5cc5f987df-qv4f2    Container created\n81s         Normal    Started             pod/db-5c45bf6fd6-2m79d           Container started\n81s         Warning   Unhealthy           pod/db-5c45bf6fd6-2m79d           Readiness probe failed: /var/run/postgresql:5432 - no response\n81s         Normal    Pulled              pod/synthetic-5cc5f987df-qv4f2    Container image \"curlimages/curl:8.17.0\" already present on machine and can be accessed by the pod\n81s         Normal    ScalingReplicaSet   deployment/web                    Scaled up replica set web-86cc98785b from 0 to 2\n81s         Normal    SuccessfulCreate    replicaset/web-86cc98785b         Created pod: web-86cc98785b-7vvvn\n81s         Normal    Scheduled           pod/worker-85767c58ff-ljlc5       Successfully assigned shop/worker-85767c58ff-ljlc5 to oncall-lab-control-plane\n81s         Norm","more":16},{"t":3.9,"kind":"run","cmd":"kubectl -n shop get deploy,rs,svc,endpoints","out":"Warning: v1 Endpoints is deprecated in v1.33+; use discovery.k8s.io/v1 EndpointSlice\nNAME                        READY   UP-TO-DATE   AVAILABLE   AGE\ndeployment.apps/api         2/2     1            2           81s\ndeployment.apps/db          1/1     1            1           82s\ndeployment.apps/synthetic   1/1     1            1           81s\ndeployment.apps/web         2/2     2            2           81s\ndeployment.apps/worker      1/1     1            1           81s\n\nNAME                                   DESIRED   CURRENT   READY   AGE\nreplicaset.apps/api-6b9c579fc6         1         1         0       64s\nreplicaset.apps/api-7d87b9fcf5         2         2         2       81s\nreplicaset.apps/db-5c45bf6fd6          1         1         1       82s\nreplicaset.apps/synthetic-5cc5f987df   1         1         1       81s\nreplicaset.apps/web-86cc98785b         2         2         2       81s\nreplicaset.apps/worker-85767c58ff      1         1         1       81s\n\nNAME          TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)    AGE\nservice/api   ClusterIP   10.96.113.187   <none>        8080/TCP   81s\nservice/db    ClusterIP   10.96.61.147    <none>        5432/TCP   82s\nservice/web   ClusterIP   10.96.206.193   <none>        80/TCP     81s\n\nNAME            ENDPOINTS                             AGE\nendpoints/api   10.244.0.168:8080,10.244.0.169:8080   81s\nendpoints/db    10.244.0.167:5432                     81s\nendpoints/web   10.244.0.171:80,10.244.0.172:80       81s","more":0},{"t":3.9,"kind":"run","cmd":"kubectl -n shop logs deploy/synthetic --tail=100 --timestamps=true","out":"2026-11-04T15:30:16.623243139Z 2026-11-04T15:30:16Z GET /orders 000\n2026-11-04T15:30:18.629635335Z 2026-11-04T15:30:18Z GET /orders 000\n2026-11-04T15:30:20.633372778Z 2026-11-04T15:30:20Z GET /orders 000\n2026-11-04T15:30:22.645323832Z 2026-11-04T15:30:22Z GET /orders 200\n2026-11-04T15:30:24.668838507Z 2026-11-04T15:30:24Z GET /orders 200\n2026-11-04T15:30:26.678058811Z 2026-11-04T15:30:26Z GET /orders 200\n2026-11-04T15:30:28.687540745Z 2026-11-04T15:30:28Z GET /orders 200\n2026-11-04T15:30:30.694386966Z 2026-11-04T15:30:30Z GET /orders 200\n2026-11-04T15:30:32.705369537Z 2026-11-04T15:30:32Z GET /orders 200\n2026-11-04T15:30:34.714180314Z 2026-11-04T15:30:34Z GET /orders 200\n2026-11-04T15:30:36.723695388Z 2026-11-04T15:30:36Z GET /orders 200\n2026-11-04T15:30:38.733974302Z 2026-11-04T15:30:38Z GET /orders 200\n2026-11-04T15:30:40.739047704Z 2026-11-04T15:30:40Z GET /orders 200\n2026-11-04T15:30:42.744387736Z 2026-11-04T15:30:42Z GET /orders 200\n2026-11-04T15:30:44.749401355Z 2026-11-04T15:30:44Z GET /orders 200\n2026-11-04T15:30:46.754934811Z 2026-11-04T15:30:46Z GET /orders 200\n2026-11-04T15:30:48.785107554Z 2026-11-04T15:30:48Z GET /orders 200\n2026-11-04T15:30:50.791672021Z 2026-11-04T15:30:50Z GET /orders 200\n2026-11-04T15:30:52.820631893Z 2026-11-04T15:30:52Z GET /orders 200\n2026-11-04T15:30:54.843616542Z 2026-11-04T15:30:54Z GET /orders 200\n2026-11-04T15:30:56.849299101Z 2026-11-04T15:30:56Z GET /orders 200\n2026-11-04T15:30:58.856609836Z 2026-11-04T15:30:58Z GET /orders 200\n2026-11-04T15:31:00.860947274Z 2026-11-04T15:31:00Z GET /orders 200\n2026-11-04T15:31:02.868131391Z 2026-11-04T15:31:02Z GET /orders 200\n2026-11-04T15:31:04.888329801Z 2026-11-04T15:31:04Z GET /orders 200\n2026-11-04T15:31:06.907373919Z 2026-11-04T15:31:06Z GET /orders 200\n2026-11-04T15:31:08.930684220Z 2026-11-04T15:31:08Z GET /orders 200\n2026-11-04T15:31:10.936828099Z 2026-11-04T15:31:10Z GET /orders 200\n2026-11-04T15:31:12.947961621Z 2026-11-04T15:31:12Z GET /orders 200\n2026-11-04T15:31:14.966753419Z 2026-11-04T15:31:14Z GET /orders 200\n2026-11-04T15:31:16.972004473Z 2026-11-04T15:31:16Z GET /orders 200\n2026-11-04T15:31:18.983024672Z 2026-11-04T15:31:18Z GET /orders 200\n2026-11-04T15:31:20.987472939Z 2026-11-04T15:31:20Z GET /orders 200\n2026-11-04T15:31:23.006185293Z 2026-11-04T15:31:23Z GET /orders 200\n2026-11-04T15:31:25.031052961Z 2026-11-04T15:31:25Z GET /orders 200\n2026-11-04T15:31:27.061877485Z 2026-11-04T15:31:27Z GET /orders 200\n2026-11-04T15:31:29.071913865Z 2026-11-04T15:31:29Z GET /orders 200\n2026-11-04T15:31:31.077032027Z 2026-11-04T15:31:31Z GET /orders 200\n2026-11-04T15:31:33.092986391Z 2026-11-04T15:31:33Z GET /orders 200\n2026-11-04T15:31:35.111167390Z 2026-11-04T15:31:35Z GET /orders 200","more":0},{"t":7.3,"kind":"run","cmd":"kubectl -n shop get deploy api -o yaml","out":"apiVersion: apps/v1\nkind: Deployment\nmetadata:\n  annotations:\n    deployment.kubernetes.io/revision: \"2\"\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: \"2026-11-04T15:30:15Z\"\n  generation: 2\n  labels:\n    app: api\n  name: api\n  namespace: shop\n  resourceVersion: \"277409\"\n  uid: 30559ad4-543f-4197-835f-19564f62e8df\nspec:\n  progressDeadlineSeconds: 600\n  replicas: 2\n  revisionHistoryLimit: 10\n  selector:\n    matchLabels:\n      app: api\n  strategy:\n    rollingUpdate:\n      maxSurge: 25%\n      maxUnavailable: 25%\n    type: RollingUpdate\n  template:\n    metadata:\n      annotations:\n        kubectl.kubernetes.io/restartedAt: \"2026-11-04T15:30:32Z\"\n      labels:\n        app: api\n    spec:\n      containers:\n      - command:\n        - python\n        - -u\n        - /app/api.py\n        envFrom:","more":59},{"t":7.3,"kind":"run","cmd":"kubectl -n shop get rs api-7d87b9fcf5 -o yaml","out":"apiVersion: apps/v1\nkind: ReplicaSet\nmetadata:\n  annotations:\n    deployment.kubernetes.io/desired-replicas: \"2\"\n    deployment.kubernetes.io/max-replicas: \"3\"\n    deployment.kubernetes.io/revision: \"1\"\n  creationTimestamp: \"2026-11-04T15:30:15Z\"\n  generation: 1\n  labels:\n    app: api\n    pod-template-hash: 7d87b9fcf5\n  name: api-7d87b9fcf5\n  namespace: shop\n  ownerReferences:\n  - apiVersion: apps/v1\n    blockOwnerDeletion: true\n    controller: true\n    kind: Deployment\n    name: api\n    uid: 30559ad4-543f-4197-835f-19564f62e8df\n  resourceVersion: \"277352\"\n  uid: 0b8fdb93-8a3f-4d79-aae0-f09278993d7e\nspec:\n  replicas: 2\n  selector:\n    matchLabels:\n      app: api\n      pod-template-hash: 7d87b9fcf5\n  template:\n    metadata:\n      labels:\n        app: api\n        pod-template-hash: 7d87b9fcf5\n    spec:\n      containers:\n      - command:\n        - python\n        - -u\n        - /app/api.py","more":46},{"t":7.3,"kind":"run","cmd":"kubectl -n shop logs api-6b9c579fc6-jzr8m -c api --previous --timestamps=true","out":"2026-11-04T15:31:10.032382600Z FATAL: DB_HOST is not set; check ConfigMap api-config","more":0},{"t":7.3,"kind":"run","cmd":"kubectl -n shop rollout history deploy/api","out":"deployment.apps/api \nREVISION  CHANGE-CAUSE\n1         <none>\n2         <none>","more":0},{"t":7.3,"kind":"run","cmd":"kubectl -n shop describe pod api-6b9c579fc6-jzr8m","out":"Name:             api-6b9c579fc6-jzr8m\nNamespace:        shop\nPriority:         0\nService Account:  default\nNode:             oncall-lab-control-plane/172.22.0.2\nStart Time:       Wed, 04 Nov 2026 15:30:32 +0000\nLabels:           app=api\n                  pod-template-hash=6b9c579fc6\nAnnotations:      kubectl.kubernetes.io/restartedAt: 2026-11-04T15:30:32Z\nStatus:           Running\nIP:               10.244.0.174\nIPs:\n  IP:           10.244.0.174\nControlled By:  ReplicaSet/api-6b9c579fc6\nContainers:\n  api:\n    Container ID:  containerd://bfa50e0e67fbe3ffe3c13f703358ad317d96136d4a5f4c018d4b51b4c2f25555\n    Image:         python:3.13-alpine\n    Image ID:      docker.io/library/python@sha256:7984cf56ceaddebe4fefeb75d64000b9f45d8b77b11a09b24524da6cdc3af0c8\n    Port:          8080/TCP\n    Host Port:     0/TCP\n    Command:\n      python\n      -u\n      /app/api.py\n    State:          Waiting\n      Reason:       CrashLoopBackOff\n    Last State:     Terminated\n      Reason:       Error\n      Exit Code:    1\n      Started:      Wed, 04 Nov 2026 15:31:09 +0000\n      Finished:     Wed, 04 Nov 2026 15:31:10 +0000\n    Ready:          False\n    Restart Count:  3\n    Limits:\n      memory:  128Mi\n    Requests:\n      cpu:      50m\n      memory:   64Mi\n    Readiness:  http-get http://:8080/healthz delay=0s timeout=1s period=5s successThreshold=1 failureThreshold=3","more":37},{"t":11.3,"kind":"say","text":"The new API pod exits because `DB_HOST` is unset. The two older API pods remain ready and are serving traffic; the synthetic probe has returned 200 since the initial startup period. I’m checking the ConfigMap and the old pods’ effective setting before changing it."},{"t":11.4,"kind":"run","cmd":"kubectl -n shop get configmap api-config -o yaml","out":"apiVersion: v1\ndata:\n  DB_HOSTNAME: db\n  DB_PORT: \"5432\"\nkind: ConfigMap\nmetadata:\n  annotations:\n    kubectl.kubernetes.io/last-applied-configuration: |\n      {\"apiVersion\":\"v1\",\"data\":{\"DB_HOST\":\"db\",\"DB_PORT\":\"5432\"},\"kind\":\"ConfigMap\",\"metadata\":{\"annotations\":{},\"name\":\"api-config\",\"namespace\":\"shop\"}}\n  creationTimestamp: \"2026-11-04T15:30:14Z\"\n  name: api-config\n  namespace: shop\n  resourceVersion: \"277397\"\n  uid: c246f69a-42da-421e-a68a-eb1fc2f5836c","more":0},{"t":11.4,"kind":"run","cmd":"kubectl -n shop get configmap api-code -o jsonpath='{.data.api\\.py}'","out":"import os, socket, sys, json, time\nfrom http.server import BaseHTTPRequestHandler, ThreadingHTTPServer\nhost = os.environ.get(\"DB_HOST\")\nport = int(os.environ.get(\"DB_PORT\", \"5432\"))\nif not host:\n    print(\"FATAL: DB_HOST is not set; check ConfigMap api-config\", flush=True)\n    sys.exit(1)\ndef 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\nclass 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\"})\nprint(f\"api listening on 8080, db={host}:{port}\", flush=True)\nThreadingHTTPServer((\"\", 8080), H).serve_forever()","more":0},{"t":11.4,"kind":"run","cmd":"kubectl -n shop describe configmap api-config","out":"Name:         api-config\nNamespace:    shop\nLabels:       <none>\nAnnotations:  <none>\n\nData\n====\nDB_HOSTNAME:\n----\ndb\n\nDB_PORT:\n----\n5432\n\n\nBinaryData\n====\n\nEvents:  <none>","more":0},{"t":11.5,"kind":"run","cmd":"kubectl -n shop exec api-7d87b9fcf5-jrj7f -c api -- printenv DB_HOST","out":"db","more":0},{"t":15.2,"kind":"say","text":"`ConfigMap/shop/api-config` has `DB_HOSTNAME=db` instead of the required `DB_HOST=db`; the older pods still have the correct value from their startup environment. I’ll correct the key and restart the API rollout as the runbook directs."},{"t":15.3,"kind":"run","cmd":"kubectl -n shop patch configmap api-config --type=json -p='[{\"op\":\"test\",\"path\":\"/data/DB_HOSTNAME\",\"value\":\"db\"},{\"op\":\"remove\",\"path\":\"/data/DB_HOSTNAME\"},{\"op\":\"add\",\"path\":\"/data/DB_HOST\",\"value\":\"db\"}]'","out":"configmap/api-config patched","more":0},{"t":16.9,"kind":"run","cmd":"kubectl -n shop rollout restart deployment/api","out":"deployment.apps/api restarted","more":0},{"t":18.9,"kind":"run","cmd":"kubectl -n shop rollout status deployment/api --timeout=120s","out":"Waiting for deployment \"api\" rollout to finish: 1 old replicas are pending termination...\nWaiting for deployment \"api\" rollout to finish: 1 old replicas are pending termination...\ndeployment \"api\" successfully rolled out","more":0},{"t":22.6,"kind":"run","cmd":"kubectl -n shop get configmap api-config -o jsonpath='{.data}'","out":"{\"DB_HOST\":\"db\",\"DB_PORT\":\"5432\"}","more":0},{"t":22.6,"kind":"run","cmd":"kubectl -n shop get deploy api -o wide","out":"NAME   READY   UP-TO-DATE   AVAILABLE   AGE    CONTAINERS   IMAGES               SELECTOR\napi    2/2     2            2           100s   api          python:3.13-alpine   app=api","more":0},{"t":22.6,"kind":"run","cmd":"kubectl -n shop get pods -o wide","out":"NAME                         READY   STATUS        RESTARTS   AGE    IP             NODE                       NOMINATED NODE   READINESS GATES\napi-66ff95f787-w7zlm         1/1     Running       0          6s     10.244.0.175   oncall-lab-control-plane   <none>           <none>\napi-66ff95f787-xr2g5         1/1     Running       0          5s     10.244.0.176   oncall-lab-control-plane   <none>           <none>\napi-7d87b9fcf5-jrj7f         1/1     Terminating   0          100s   10.244.0.169   oncall-lab-control-plane   <none>           <none>\napi-7d87b9fcf5-lb8x9         1/1     Terminating   0          100s   10.244.0.168   oncall-lab-control-plane   <none>           <none>\ndb-5c45bf6fd6-2m79d          1/1     Running       0          101s   10.244.0.167   oncall-lab-control-plane   <none>           <none>\nsynthetic-5cc5f987df-qv4f2   1/1     Running       0          100s   10.244.0.173   oncall-lab-control-plane   <none>           <none>\nweb-86cc98785b-7vvvn         1/1     Running       0          100s   10.244.0.172   oncall-lab-control-plane   <none>           <none>\nweb-86cc98785b-xhbzf         1/1     Running       0          100s   10.244.0.171   oncall-lab-control-plane   <none>           <none>\nworker-85767c58ff-ljlc5      1/1     Running       0          100s   10.244.0.170   oncall-lab-control-plane   <none>           <none>","more":0},{"t":22.6,"kind":"run","cmd":"kubectl -n shop get endpoints api web db","out":"Warning: v1 Endpoints is deprecated in v1.33+; use discovery.k8s.io/v1 EndpointSlice\nNAME   ENDPOINTS                             AGE\napi    10.244.0.175:8080,10.244.0.176:8080   100s\nweb    10.244.0.171:80,10.244.0.172:80       100s\ndb     10.244.0.167:5432                     100s","more":0},{"t":22.6,"kind":"run","cmd":"kubectl -n shop logs deploy/synthetic --tail=30 --timestamps=true","out":"2026-11-04T15:30:54.843616542Z 2026-11-04T15:30:54Z GET /orders 200\n2026-11-04T15:30:56.849299101Z 2026-11-04T15:30:56Z GET /orders 200\n2026-11-04T15:30:58.856609836Z 2026-11-04T15:30:58Z GET /orders 200\n2026-11-04T15:31:00.860947274Z 2026-11-04T15:31:00Z GET /orders 200\n2026-11-04T15:31:02.868131391Z 2026-11-04T15:31:02Z GET /orders 200\n2026-11-04T15:31:04.888329801Z 2026-11-04T15:31:04Z GET /orders 200\n2026-11-04T15:31:06.907373919Z 2026-11-04T15:31:06Z GET /orders 200\n2026-11-04T15:31:08.930684220Z 2026-11-04T15:31:08Z GET /orders 200\n2026-11-04T15:31:10.936828099Z 2026-11-04T15:31:10Z GET /orders 200\n2026-11-04T15:31:12.947961621Z 2026-11-04T15:31:12Z GET /orders 200\n2026-11-04T15:31:14.966753419Z 2026-11-04T15:31:14Z GET /orders 200\n2026-11-04T15:31:16.972004473Z 2026-11-04T15:31:16Z GET /orders 200\n2026-11-04T15:31:18.983024672Z 2026-11-04T15:31:18Z GET /orders 200\n2026-11-04T15:31:20.987472939Z 2026-11-04T15:31:20Z GET /orders 200\n2026-11-04T15:31:23.006185293Z 2026-11-04T15:31:23Z GET /orders 200\n2026-11-04T15:31:25.031052961Z 2026-11-04T15:31:25Z GET /orders 200\n2026-11-04T15:31:27.061877485Z 2026-11-04T15:31:27Z GET /orders 200\n2026-11-04T15:31:29.071913865Z 2026-11-04T15:31:29Z GET /orders 200\n2026-11-04T15:31:31.077032027Z 2026-11-04T15:31:31Z GET /orders 200\n2026-11-04T15:31:33.092986391Z 2026-11-04T15:31:33Z GET /orders 200\n2026-11-04T15:31:35.111167390Z 2026-11-04T15:31:35Z GET /orders 200\n2026-11-04T15:31:37.117798150Z 2026-11-04T15:31:37Z GET /orders 200\n2026-11-04T15:31:39.131708810Z 2026-11-04T15:31:39Z GET /orders 200\n2026-11-04T15:31:41.137464448Z 2026-11-04T15:31:41Z GET /orders 200\n2026-11-04T15:31:43.147202061Z 2026-11-04T15:31:43Z GET /orders 200\n2026-11-04T15:31:45.176053610Z 2026-11-04T15:31:45Z GET /orders 200\n2026-11-04T15:31:47.193053751Z 2026-11-04T15:31:47Z GET /orders 200\n2026-11-04T15:31:49.205649133Z 2026-11-04T15:31:49Z GET /orders 200\n2026-11-04T15:31:51.210526119Z 2026-11-04T15:31:51Z GET /orders 200\n2026-11-04T15:31:53.231746742Z 2026-11-04T15:31:53Z GET /orders 200","more":0},{"t":22.6,"kind":"run","cmd":"kubectl -n shop logs deploy/api --all-pods=true --tail=10 --timestamps=true","out":"[pod/api-7d87b9fcf5-lb8x9/api] 2026-11-04T15:30:15.725352665Z api listening on 8080, db=db:5432\n[pod/api-66ff95f787-w7zlm/api] 2026-11-04T15:31:50.093896447Z api listening on 8080, db=db:5432\n[pod/api-66ff95f787-xr2g5/api] 2026-11-04T15:31:51.129565333Z api listening on 8080, db=db:5432\n[pod/api-7d87b9fcf5-jrj7f/api] 2026-11-04T15:30:15.741022711Z api listening on 8080, db=db:5432","more":0}],"report":"IMPACT: A new API pod crash-looped from 15:30:32 UTC, blocking its rollout. Two older API pods continued serving; no customer-facing failure was observed during the crash loop. The synthetic probe recorded startup failures at 15:30:16–15:30:20 UTC, then returned 200.\n\nROOT CAUSE: `ConfigMap/shop/api-config` had `data.DB_HOSTNAME` instead of the required `data.DB_HOST`.\n\nACTIONS TAKEN:\n1. Replaced `DB_HOSTNAME=db` with `DB_HOST=db` in the ConfigMap.\n2. Restarted the `shop/api` Deployment rollout.\n\nSTATUS: Resolved. The rollout completed with two new API pods ready and zero restarts. Both are API endpoints, and the synthetic probe returned 200 after the rollout.\n\nESCALATION: none.\n\nFOLLOW-UP: Validate required API configuration keys before deploying ConfigMap changes."}