{"id":"s4-cohere-north-mini-r2","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] ShopOrdersErrorRate shop/web\nGET http://web/orders: 5xx or timeout ratio above 5% for 5 minutes (current: 100%).","steps":[{"t":1.8,"kind":"run","cmd":"kubectl -n shop get all","out":"NAME                             READY   STATUS    RESTARTS   AGE\npod/api-7d87b9fcf5-kkbdp         1/1     Running   0          79s\npod/api-7d87b9fcf5-zz4zf         1/1     Running   0          79s\npod/db-5c45bf6fd6-lqt4b          1/1     Running   0          79s\npod/synthetic-5cc5f987df-746sl   1/1     Running   0          79s\npod/web-86cc98785b-6zrrr         0/1     Running   0          79s\npod/web-86cc98785b-t25wv         0/1     Running   0          79s\npod/worker-85767c58ff-xgn27      1/1     Running   0          79s\n\nNAME          TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)    AGE\nservice/api   ClusterIP   10.96.90.150    <none>        8080/TCP   79s\nservice/db    ClusterIP   10.96.161.43    <none>        5432/TCP   79s\nservice/web   ClusterIP   10.96.157.253   <none>        80/TCP     79s\n\nNAME                        READY   UP-TO-DATE   AVAILABLE   AGE\ndeployment.apps/api         2/2     2            2           79s\ndeployment.apps/db          1/1     1            1           79s\ndeployment.apps/synthetic   1/1     1            1           79s\ndeployment.apps/web         0/2     2            0           79s\ndeployment.apps/worker      1/1     1            1           79s\n\nNAME                                   DESIRED   CURRENT   READY   AGE\nreplicaset.apps/api-7d87b9fcf5         2         2         2       79s\nreplicaset.apps/db-5c45bf6fd6          1         1         1       79s\nreplicaset.apps/synthetic-5cc5f987df   1         1         1       79s\nreplicaset.apps/web-86cc98785b         2         2         0       79s\nreplicaset.apps/worker-85767c58ff      1         1         1       79s","more":0},{"t":2.8,"kind":"run","cmd":"kubectl -n shop describe pod","out":"Name:             api-7d87b9fcf5-kkbdp\nNamespace:        shop\nPriority:         0\nService Account:  default\nNode:             oncall-lab-control-plane/172.22.0.2\nStart Time:       Tue, 03 Nov 2026 21:55:25 +0000\nLabels:           app=api\n                  pod-template-hash=7d87b9fcf5\nAnnotations:      <none>\nStatus:           Running\nIP:               10.244.0.78\nIPs:\n  IP:           10.244.0.78\nControlled By:  ReplicaSet/api-7d87b9fcf5\nContainers:\n  api:\n    Container ID:  containerd://44d235ef538c39dc4a4d94847373c9e4210f0c7e0ecafcd49bc07db5e0b212bb\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:          Running\n      Started:      Tue, 03 Nov 2026 21:55:25 +0000\n    Ready:          True\n    Restart Count:  0\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\n    Environment Variables from:\n      api-config  ConfigMap  Optional: false\n    Environment:  <none>\n    Mounts:\n      /app from code (rw)","more":372},{"t":3.9,"kind":"run","cmd":"kubectl -n shop rollout history deploy/web","out":"deployment.apps/web \nREVISION  CHANGE-CAUSE\n1         <none>","more":0},{"t":5.0,"kind":"run","cmd":"kubectl -n shop get deploy","out":"NAME        READY   UP-TO-DATE   AVAILABLE   AGE\napi         2/2     2            2           82s\ndb          1/1     1            1           82s\nsynthetic   1/1     1            1           82s\nweb         0/2     2            0           82s\nworker      1/1     1            1           82s","more":0},{"t":5.8,"kind":"run","cmd":"kubectl -n shop describe deploy web","out":"Name:                   web\nNamespace:              shop\nCreationTimestamp:      Tue, 03 Nov 2026 21:55:25 +0000\nLabels:                 app=web\nAnnotations:            deployment.kubernetes.io/revision: 1\nSelector:               app=web\nReplicas:               2 desired | 2 updated | 2 total | 0 available | 2 unavailable\nStrategyType:           RollingUpdate\nMinReadySeconds:        0\nRollingUpdateStrategy:  25% max unavailable, 25% max surge\nPod Template:\n  Labels:  app=web\n  Containers:\n   nginx:\n    Image:        nginx:1.29-alpine\n    Port:         80/TCP\n    Host Port:    0/TCP\n    Readiness:    http-get http://:80/healthz delay=0s timeout=1s period=5s successThreshold=1 failureThreshold=3\n    Environment:  <none>\n    Mounts:\n      /etc/nginx/conf.d from conf (rw)\n  Volumes:\n   conf:\n    Type:          ConfigMap (a volume populated by a ConfigMap)\n    Name:          web-nginx\n    Optional:      false\n  Node-Selectors:  <none>\n  Tolerations:     <none>\nConditions:\n  Type           Status  Reason\n  ----           ------  ------\n  Progressing    True    NewReplicaSetAvailable\n  Available      False   MinimumReplicasUnavailable\nOldReplicaSets:  <none>\nNewReplicaSet:   web-86cc98785b (2/2 replicas created)\nEvents:\n  Type    Reason             Age   From                   Message\n  ----    ------             ----  ----                   -------\n  Normal  ScalingReplicaSet  83s   deployment-controller  Scaled up replica set web-86cc98785b from 0 to 2","more":0},{"t":6.5,"kind":"run","cmd":"kubectl -n shop describe configmap web-nginx","out":"Name:         web-nginx\nNamespace:    shop\nLabels:       <none>\nAnnotations:  <none>\n\nData\n====\ndefault.conf:\n----\nserver {\n  listen 80;\n  location / { proxy_pass http://api:8080; proxy_connect_timeout 2s; proxy_read_timeout 3s; }\n}\n\n\n\nBinaryData\n====\n\nEvents:  <none>","more":0},{"t":7.6,"kind":"run","cmd":"kubectl -n shop logs synthetic-5cc5f987df-746sl","out":"2026-11-03T21:55:26Z GET /orders 000\n2026-11-03T21:55:28Z GET /orders 000\n2026-11-03T21:55:30Z GET /orders 000\n2026-11-03T21:55:32Z GET /orders 200\n2026-11-03T21:55:35Z GET /orders 200\n2026-11-03T21:55:37Z GET /orders 200\n2026-11-03T21:55:39Z GET /orders 200\n2026-11-03T21:55:41Z GET /orders 200\n2026-11-03T21:55:43Z GET /orders 502\n2026-11-03T21:55:45Z GET /orders 502\n2026-11-03T21:55:47Z GET /orders 502\n2026-11-03T21:55:49Z GET /orders 502\n2026-11-03T21:55:51Z GET /orders 502\n2026-11-03T21:55:53Z GET /orders 502\n2026-11-03T21:55:55Z GET /orders 502\n2026-11-03T21:55:57Z GET /orders 502\n2026-11-03T21:55:59Z GET /orders 000\n2026-11-03T21:56:01Z GET /orders 000\n2026-11-03T21:56:03Z GET /orders 000\n2026-11-03T21:56:05Z GET /orders 000\n2026-11-03T21:56:07Z GET /orders 000\n2026-11-03T21:56:09Z GET /orders 000\n2026-11-03T21:56:11Z GET /orders 000\n2026-11-03T21:56:13Z GET /orders 000\n2026-11-03T21:56:15Z GET /orders 000\n2026-11-03T21:56:17Z GET /orders 000\n2026-11-03T21:56:19Z GET /orders 000\n2026-11-03T21:56:21Z GET /orders 000\n2026-11-03T21:56:23Z GET /orders 000\n2026-11-03T21:56:25Z GET /orders 000\n2026-11-03T21:56:27Z GET /orders 000\n2026-11-03T21:56:29Z GET /orders 000\n2026-11-03T21:56:31Z GET /orders 000\n2026-11-03T21:56:33Z GET /orders 000\n2026-11-03T21:56:35Z GET /orders 000\n2026-11-03T21:56:37Z GET /orders 000\n2026-11-03T21:56:39Z GET /orders 000\n2026-11-03T21:56:41Z GET /orders 000\n2026-11-03T21:56:43Z GET /orders 000\n2026-11-03T21:56:45Z GET /orders 000","more":2},{"t":8.8,"kind":"run","cmd":"kubectl -n shop logs web-86cc98785b-6zrrr","out":"/docker-entrypoint.sh: /docker-entrypoint.d/ is not empty, will attempt to perform configuration\n/docker-entrypoint.sh: Looking for shell scripts in /docker-entrypoint.d/\n/docker-entrypoint.sh: Launching /docker-entrypoint.d/10-listen-on-ipv6-by-default.sh\n10-listen-on-ipv6-by-default.sh: info: can not modify /etc/nginx/conf.d/default.conf (read-only file system?)\n/docker-entrypoint.sh: Sourcing /docker-entrypoint.d/15-local-resolvers.envsh\n/docker-entrypoint.sh: Launching /docker-entrypoint.d/20-envsubst-on-templates.sh\n/docker-entrypoint.sh: Launching /docker-entrypoint.d/30-tune-worker-processes.sh\n/docker-entrypoint.sh: Configuration complete; ready for start up\n2026/11/03 21:55:25 [notice] 1#1: using the \"epoll\" event method\n2026/11/03 21:55:25 [notice] 1#1: nginx/1.29.8\n2026/11/03 21:55:25 [notice] 1#1: built by gcc 15.2.0 (Alpine 15.2.0) \n2026/11/03 21:55:25 [notice] 1#1: OS: Linux 6.8.0-117-generic\n2026/11/03 21:55:25 [notice] 1#1: getrlimit(RLIMIT_NOFILE): 1073741816:1073741816\n2026/11/03 21:55:25 [notice] 1#1: start worker processes\n2026/11/03 21:55:25 [notice] 1#1: start worker process 28\n2026/11/03 21:55:25 [notice] 1#1: start worker process 29\n2026/11/03 21:55:25 [notice] 1#1: start worker process 30\n2026/11/03 21:55:25 [notice] 1#1: start worker process 31\n2026/11/03 21:55:25 [notice] 1#1: start worker process 32\n2026/11/03 21:55:25 [notice] 1#1: start worker process 33\n2026/11/03 21:55:25 [notice] 1#1: start worker process 34\n2026/11/03 21:55:25 [notice] 1#1: start worker process 35\n2026/11/03 21:55:26 [error] 28#28: *1 connect() failed (111: Connection refused) while connecting to upstream, client: 10.244.0.1, server: , request: \"GET /healthz HTTP/1.1\", upstream: \"http://10.96.90.150:8080/healthz\", host: \"10.244.0.80:80\"\n10.244.0.1 - - [03/Nov/2026:21:55:26 +0000] \"GET /healthz HTTP/1.1\" 502 157 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.1 - - [03/Nov/2026:21:55:31 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.82 - - [03/Nov/2026:21:55:32 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.1 - - [03/Nov/2026:21:55:36 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.82 - - [03/Nov/2026:21:55:36 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.82 - - [03/Nov/2026:21:55:37 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.82 - - [03/Nov/2026:21:55:39 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.82 - - [03/Nov/2026:21:55:39 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.82 - - [03/Nov/2026:21:55:40 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.82 - - [03/Nov/2026:21:55:41 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.1 - - [03/Nov/2026:21:55:41 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.82 - - [03/Nov/2026:21:55:41 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.82 - - [03/Nov/2026:21:55:43 +0000] \"GET /orders HTTP/1.1\" 502 157 \"-\" \"curl/8.17.0\" \"-\"\n2026/11/03 21:55:43 [error] 28#28: *25 connect() failed (111: Connection refused) while connecting to upstream, client: 10.244.0.82, server: , request: \"GET /orders HTTP/1.1\", upstream: \"http://10.96.90.150:8080/orders\", host: \"web\"\n10.244.0.82 - - [03/Nov/2026:21:55:45 +0000] \"GET /orders HTTP/1.1\" 502 157 \"-\" \"curl/8.17.0\" \"-\"\n2026/11/03 21:55:45 [error] 28#28: *27 connect() failed (111: Connection refused) while connecting to upstream, client: 10.244.0.82, server: , request: \"GET /orders HTTP/1.1\", upstream: \"http://10.96.90.150:8080/orders\", host: \"web\"\n2026/11/03 21:55:46 [error] 28#28: *29 connect() failed (111: Connection refused) while connecting to upstream, client: 10.244.0.1, server: , request: \"GET /healthz HTTP/1.1\", upstream: \"http://10.96.90.150:8080/healthz\", host: \"10.244.0.80:80\"","more":31},{"t":10.5,"kind":"run","cmd":"kubectl -n shop get endpoints","out":"Warning: v1 Endpoints is deprecated in v1.33+; use discovery.k8s.io/v1 EndpointSlice\nNAME   ENDPOINTS                           AGE\napi    10.244.0.77:8081,10.244.0.78:8081   88s\ndb     10.244.0.76:5432                    88s\nweb                                        88s","more":0},{"t":11.8,"kind":"run","cmd":"kubectl -n shop describe deploy api","out":"Name:                   api\nNamespace:              shop\nCreationTimestamp:      Tue, 03 Nov 2026 21:55:25 +0000\nLabels:                 app=api\nAnnotations:            deployment.kubernetes.io/revision: 1\nSelector:               app=api\nReplicas:               2 desired | 2 updated | 2 total | 2 available | 0 unavailable\nStrategyType:           RollingUpdate\nMinReadySeconds:        0\nRollingUpdateStrategy:  25% max unavailable, 25% max surge\nPod Template:\n  Labels:  app=api\n  Containers:\n   api:\n    Image:      python:3.13-alpine\n    Port:       8080/TCP\n    Host Port:  0/TCP\n    Command:\n      python\n      -u\n      /app/api.py\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\n    Environment Variables from:\n      api-config  ConfigMap  Optional: false\n    Environment:  <none>\n    Mounts:\n      /app from code (rw)\n  Volumes:\n   code:\n    Type:          ConfigMap (a volume populated by a ConfigMap)\n    Name:          api-code\n    Optional:      false\n  Node-Selectors:  <none>\n  Tolerations:     <none>\nConditions:","more":10},{"t":12.8,"kind":"run","cmd":"kubectl -n shop logs api-7d87b9fcf5-kkbdp","out":"api listening on 8080, db=db:5432","more":0},{"t":13.7,"kind":"run","cmd":"kubectl -n shop describe svc api","out":"Name:                     api\nNamespace:                shop\nLabels:                   <none>\nAnnotations:              <none>\nSelector:                 app=api\nType:                     ClusterIP\nIP Family Policy:         SingleStack\nIP Families:              IPv4\nIP:                       10.96.90.150\nIPs:                      10.96.90.150\nPort:                     <unset>  8080/TCP\nTargetPort:               8081/TCP\nEndpoints:                10.244.0.77:8081,10.244.0.78:8081\nSession Affinity:         None\nInternal Traffic Policy:  Cluster\nEvents:                   <none>","more":0},{"t":15.0,"kind":"run","cmd":"kubectl -n shop exec api-7d87b9fcf5-kkbdp -- netstat -tlnp","out":"Active Internet connections (only servers)\nProto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name    \ntcp        0      0 0.0.0.0:8080            0.0.0.0:*               LISTEN      1/python","more":0},{"t":18.0,"kind":"run","cmd":"kubectl -n shop get all | grep -i \"events-writer\"","out":"(no output)","more":0},{"t":19.8,"kind":"run","cmd":"kubectl -n shop get deploy --output yaml web","out":"apiVersion: apps/v1\nkind: Deployment\nmetadata:\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\":\"web\"},\"name\":\"web\",\"namespace\":\"shop\"},\"spec\":{\"replicas\":2,\"selector\":{\"matchLabels\":{\"app\":\"web\"}},\"template\":{\"metadata\":{\"labels\":{\"app\":\"web\"}},\"spec\":{\"containers\":[{\"image\":\"nginx:1.29-alpine\",\"name\":\"nginx\",\"ports\":[{\"containerPort\":80}],\"readinessProbe\":{\"httpGet\":{\"path\":\"/healthz\",\"port\":80},\"periodSeconds\":5},\"volumeMounts\":[{\"mountPath\":\"/etc/nginx/conf.d\",\"name\":\"conf\"}]}],\"volumes\":[{\"configMap\":{\"name\":\"web-nginx\"},\"name\":\"conf\"}]}}}}\n  creationTimestamp: \"2026-11-03T21:55:25Z\"\n  generation: 1\n  labels:\n    app: web\n  name: web\n  namespace: shop\n  resourceVersion: \"183622\"\n  uid: a7478afa-74d8-4fe5-a318-baa446998e41\nspec:\n  progressDeadlineSeconds: 600\n  replicas: 2\n  revisionHistoryLimit: 10\n  selector:\n    matchLabels:\n      app: web\n  strategy:\n    rollingUpdate:\n      maxSurge: 25%\n      maxUnavailable: 25%\n    type: RollingUpdate\n  template:\n    metadata:\n      labels:\n        app: web\n    spec:\n      containers:\n      - image: nginx:1.29-alpine\n        imagePullPolicy: IfNotPresent\n        name: nginx\n        ports:\n        - containerPort: 80\n          protocol: TCP\n        readinessProbe:","more":43},{"t":20.9,"kind":"run","cmd":"kubectl -n shop get svc api -o yaml","out":"apiVersion: v1\nkind: Service\nmetadata:\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: \"2026-11-03T21:55:25Z\"\n  name: api\n  namespace: shop\n  resourceVersion: \"183582\"\n  uid: 5e714b14-f83c-4bd9-998d-f9aac9c8271e\nspec:\n  clusterIP: 10.96.90.150\n  clusterIPs:\n  - 10.96.90.150\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\nstatus:\n  loadBalancer: {}","more":0},{"t":22.0,"kind":"run","cmd":"kubectl -n shop patch svc api -p '{\"spec\":{\"ports\":[{\"port\":8080,\"targetPort\":8080}]}}'","out":"service/api patched","more":0},{"t":22.9,"kind":"run","cmd":"kubectl -n shop get svc api -o yaml","out":"apiVersion: v1\nkind: Service\nmetadata:\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: \"2026-11-03T21:55:25Z\"\n  name: api\n  namespace: shop\n  resourceVersion: \"183744\"\n  uid: 5e714b14-f83c-4bd9-998d-f9aac9c8271e\nspec:\n  clusterIP: 10.96.90.150\n  clusterIPs:\n  - 10.96.90.150\n  internalTrafficPolicy: Cluster\n  ipFamilies:\n  - IPv4\n  ipFamilyPolicy: SingleStack\n  ports:\n  - port: 8080\n    protocol: TCP\n    targetPort: 8080\n  selector:\n    app: api\n  sessionAffinity: None\n  type: ClusterIP\nstatus:\n  loadBalancer: {}","more":0},{"t":24.9,"kind":"run","cmd":"kubectl -n shop scale deploy web --replicas=0","out":"deployment.apps/web scaled","more":0},{"t":25.9,"kind":"run","cmd":"kubectl -n shop scale deploy web --replicas=2","out":"deployment.apps/web scaled","more":0},{"t":27.2,"kind":"run","cmd":"kubectl -n shop get deploy web","out":"NAME   READY   UP-TO-DATE   AVAILABLE   AGE\nweb    2/2     2            2           105s","more":0},{"t":35.2,"kind":"run","cmd":"kubectl -n shop get pods -l app=web","out":"NAME                   READY   STATUS    RESTARTS   AGE\nweb-86cc98785b-4c82f   1/1     Running   0          10s\nweb-86cc98785b-rmn7w   1/1     Running   0          10s","more":0},{"t":36.4,"kind":"run","cmd":"kubectl -n shop logs synthetic-5cc5f987df-746sl","out":"2026-11-03T21:55:26Z GET /orders 000\n2026-11-03T21:55:28Z GET /orders 000\n2026-11-03T21:55:30Z GET /orders 000\n2026-11-03T21:55:32Z GET /orders 200\n2026-11-03T21:55:35Z GET /orders 200\n2026-11-03T21:55:37Z GET /orders 200\n2026-11-03T21:55:39Z GET /orders 200\n2026-11-03T21:55:41Z GET /orders 200\n2026-11-03T21:55:43Z GET /orders 502\n2026-11-03T21:55:45Z GET /orders 502\n2026-11-03T21:55:47Z GET /orders 502\n2026-11-03T21:55:49Z GET /orders 502\n2026-11-03T21:55:51Z GET /orders 502\n2026-11-03T21:55:53Z GET /orders 502\n2026-11-03T21:55:55Z GET /orders 502\n2026-11-03T21:55:57Z GET /orders 502\n2026-11-03T21:55:59Z GET /orders 000\n2026-11-03T21:56:01Z GET /orders 000\n2026-11-03T21:56:03Z GET /orders 000\n2026-11-03T21:56:05Z GET /orders 000\n2026-11-03T21:56:07Z GET /orders 000\n2026-11-03T21:56:09Z GET /orders 000\n2026-11-03T21:56:11Z GET /orders 000\n2026-11-03T21:56:13Z GET /orders 000\n2026-11-03T21:56:15Z GET /orders 000\n2026-11-03T21:56:17Z GET /orders 000\n2026-11-03T21:56:19Z GET /orders 000\n2026-11-03T21:56:21Z GET /orders 000\n2026-11-03T21:56:23Z GET /orders 000\n2026-11-03T21:56:25Z GET /orders 000\n2026-11-03T21:56:27Z GET /orders 000\n2026-11-03T21:56:29Z GET /orders 000\n2026-11-03T21:56:31Z GET /orders 000\n2026-11-03T21:56:33Z GET /orders 000\n2026-11-03T21:56:35Z GET /orders 000\n2026-11-03T21:56:37Z GET /orders 000\n2026-11-03T21:56:39Z GET /orders 000\n2026-11-03T21:56:41Z GET /orders 000\n2026-11-03T21:56:43Z GET /orders 000\n2026-11-03T21:56:45Z GET /orders 000","more":16},{"t":157.8,"kind":"run","cmd":"kubectl -n shop logs web-86cc98785b-4c82f -f --since=1m","out":"/docker-entrypoint.sh: /docker-entrypoint.d/ is not empty, will attempt to perform configuration\n/docker-entrypoint.sh: Looking for shell scripts in /docker-entrypoint.d/\n/docker-entrypoint.sh: Launching /docker-entrypoint.d/10-listen-on-ipv6-by-default.sh\n10-listen-on-ipv6-by-default.sh: info: can not modify /etc/nginx/conf.d/default.conf (read-only file system?)\n/docker-entrypoint.sh: Sourcing /docker-entrypoint.d/15-local-resolvers.envsh\n/docker-entrypoint.sh: Launching /docker-entrypoint.d/20-envsubst-on-templates.sh\n/docker-entrypoint.sh: Launching /docker-entrypoint.d/30-tune-worker-processes.sh\n/docker-entrypoint.sh: Configuration complete; ready for start up\n2026/11/03 21:57:09 [notice] 1#1: using the \"epoll\" event method\n2026/11/03 21:57:09 [notice] 1#1: nginx/1.29.8\n2026/11/03 21:57:09 [notice] 1#1: built by gcc 15.2.0 (Alpine 15.2.0) \n2026/11/03 21:57:09 [notice] 1#1: OS: Linux 6.8.0-117-generic\n2026/11/03 21:57:09 [notice] 1#1: getrlimit(RLIMIT_NOFILE): 1073741816:1073741816\n2026/11/03 21:57:09 [notice] 1#1: start worker processes\n2026/11/03 21:57:09 [notice] 1#1: start worker process 28\n2026/11/03 21:57:09 [notice] 1#1: start worker process 29\n2026/11/03 21:57:09 [notice] 1#1: start worker process 30\n2026/11/03 21:57:09 [notice] 1#1: start worker process 31\n2026/11/03 21:57:09 [notice] 1#1: start worker process 32\n2026/11/03 21:57:09 [notice] 1#1: start worker process 33\n2026/11/03 21:57:09 [notice] 1#1: start worker process 34\n2026/11/03 21:57:09 [notice] 1#1: start worker process 35\n10.244.0.1 - - [03/Nov/2026:21:57:10 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.82 - - [03/Nov/2026:21:57:11 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.82 - - [03/Nov/2026:21:57:13 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.1 - - [03/Nov/2026:21:57:15 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.82 - - [03/Nov/2026:21:57:17 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.1 - - [03/Nov/2026:21:57:20 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.82 - - [03/Nov/2026:21:57:23 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.1 - - [03/Nov/2026:21:57:25 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.82 - - [03/Nov/2026:21:57:25 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.1 - - [03/Nov/2026:21:57:30 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.82 - - [03/Nov/2026:21:57:31 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.1 - - [03/Nov/2026:21:57:35 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.82 - - [03/Nov/2026:21:57:35 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.82 - - [03/Nov/2026:21:57:39 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.1 - - [03/Nov/2026:21:57:40 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.82 - - [03/Nov/2026:21:57:43 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.1 - - [03/Nov/2026:21:57:45 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.82 - - [03/Nov/2026:21:57:45 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"","more":47},{"t":159.1,"kind":"run","cmd":"kubectl -n shop logs synthetic-5cc5f987df-746sl | tail -20","out":"2026-11-03T21:58:42Z GET /orders 200\n2026-11-03T21:58:44Z GET /orders 200\n2026-11-03T21:58:46Z GET /orders 200\n2026-11-03T21:58:48Z GET /orders 200\n2026-11-03T21:58:50Z GET /orders 200\n2026-11-03T21:58:52Z GET /orders 200\n2026-11-03T21:58:54Z GET /orders 200\n2026-11-03T21:58:56Z GET /orders 200\n2026-11-03T21:58:58Z GET /orders 200\n2026-11-03T21:59:00Z GET /orders 200\n2026-11-03T21:59:02Z GET /orders 200\n2026-11-03T21:59:04Z GET /orders 200\n2026-11-03T21:59:06Z GET /orders 200\n2026-11-03T21:59:08Z GET /orders 200\n2026-11-03T21:59:10Z GET /orders 200\n2026-11-03T21:59:12Z GET /orders 200\n2026-11-03T21:59:14Z GET /orders 200\n2026-11-03T21:59:16Z GET /orders 200\n2026-11-03T21:59:18Z GET /orders 200\n2026-11-03T21:59:20Z GET /orders 200","more":0},{"t":160.5,"kind":"run","cmd":"kubectl -n shop get svc synthetic","out":"Error from server (NotFound): services \"synthetic\" not found","more":0},{"t":161.9,"kind":"run","cmd":"kubectl -n shop get all","out":"NAME                             READY   STATUS    RESTARTS   AGE\npod/api-7d87b9fcf5-kkbdp         1/1     Running   0          3m59s\npod/api-7d87b9fcf5-zz4zf         1/1     Running   0          3m59s\npod/db-5c45bf6fd6-lqt4b          1/1     Running   0          3m59s\npod/synthetic-5cc5f987df-746sl   1/1     Running   0          3m59s\npod/web-86cc98785b-4c82f         1/1     Running   0          2m16s\npod/web-86cc98785b-rmn7w         1/1     Running   0          2m16s\npod/worker-85767c58ff-xgn27      1/1     Running   0          3m59s\n\nNAME          TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)    AGE\nservice/api   ClusterIP   10.96.90.150    <none>        8080/TCP   3m59s\nservice/db    ClusterIP   10.96.161.43    <none>        5432/TCP   3m59s\nservice/web   ClusterIP   10.96.157.253   <none>        80/TCP     3m59s\n\nNAME                        READY   UP-TO-DATE   AVAILABLE   AGE\ndeployment.apps/api         2/2     2            2           3m59s\ndeployment.apps/db          1/1     1            1           3m59s\ndeployment.apps/synthetic   1/1     1            1           3m59s\ndeployment.apps/web         2/2     2            2           3m59s\ndeployment.apps/worker      1/1     1            1           3m59s\n\nNAME                                   DESIRED   CURRENT   READY   AGE\nreplicaset.apps/api-7d87b9fcf5         2         2         2       3m59s\nreplicaset.apps/db-5c45bf6fd6          1         1         1       3m59s\nreplicaset.apps/synthetic-5cc5f987df   1         1         1       3m59s\nreplicaset.apps/web-86cc98785b         2         2         2       3m59s\nreplicaset.apps/worker-85767c58ff      1         1         1       3m59s","more":0},{"t":163.1,"kind":"run","cmd":"kubectl -n shop rollout history deploy/api","out":"deployment.apps/api \nREVISION  CHANGE-CAUSE\n1         <none>","more":0},{"t":164.6,"kind":"run","cmd":"kubectl -n shop exec api-7d87b9fcf5-kkbdp -- nc -vz api.shop 8080","out":"api.shop (10.96.90.150:8080) open","more":0}],"report":"## Shop on-call incident investigation and resolution\n\n### **IMPACT**: Service: shop/web - all orders requests failing (100% error rate) since ~2026-11-03T21:55:43Z\n- Web service completely unavailable due to pod readiness probe failures\n- All customer orders requests to `/orders` endpoint returning 502 Bad Gateway\n\n### **ROOT CAUSE**: Service `api.shop` port mismatch\n- **Kubernetes object**: `service/api` in namespace `shop`\n- **Field at fault**: `spec.ports.targetPort` was set to `8081`\n- **Actual state**: Pods were listening on port `8080`\n- **Impact**: Web service readiness probe `/healthz` was proxying to wrong upstream port (8081 instead of 8080), causing all connections to fail with \"Connection refused\"\n\n### **ACTIONS TAKEN**: \n1. Fixed port mismatch in api service: updated `targetPort` from `8081` to `8080`\n2. Scaled web deployment to 0 replicas to clear crashed pods\n3. Scaled web deployment back to 2 replicas to trigger new rollout\n4. Verified successful rollout with both web pods becoming ready\n\n### **STATUS**: RESOLVED\n- All web pods now report \"READY: 1/1\" \n- API pods responding correctly on port 8080\n- Synthetic probe logs show consistent 200 status codes (no 502 errors)\n- Web service serving orders requests successfully\n\n### **ESCALATION**: none\n- Fix required only standard kubectl operations within runbook authority\n- No decision-making needed outside established procedures\n\n### **FOLLOW-UP**: Monitor synthetic probe logs regularly for 5+ minutes to ensure stability before incident closure"}