{"id":"s8-glm-flash-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] ShopOrdersErrorRate shop/web\nGET http://web/orders: 5xx or timeout ratio above 5% for 5 minutes (current: 100%).","steps":[{"t":2.9,"kind":"say","text":"I'm on it. Starting with the alert triage steps from the runbook: check `synthetic` logs for the failure pattern, then look at recent rollouts and pod health."},{"t":3.0,"kind":"run","cmd":"kubectl -n shop get events --sort-by=.lastTimestamp | tail -40","out":"84s         Normal    Started             pod/web-86cc98785b-db2dq          Container started\n84s         Normal    Created             pod/web-86cc98785b-db2dq          Container created\n84s         Normal    Pulled              pod/db-5c45bf6fd6-sn2ln           Container image \"postgres:17-alpine\" already present on machine and can be accessed by the pod\n84s         Warning   Unhealthy           pod/api-7d87b9fcf5-9p4q4          Readiness probe failed: Get \"http://10.244.0.158:8080/healthz\": dial tcp 10.244.0.158:8080: connect: connection refused\n84s         Normal    Created             pod/web-86cc98785b-4vd8k          Container created\n84s         Normal    Started             pod/web-86cc98785b-4vd8k          Container started\n84s         Normal    Pulled              pod/web-86cc98785b-db2dq          Container image \"nginx:1.29-alpine\" already present on machine and can be accessed by the pod\n83s         Warning   Unhealthy           pod/web-86cc98785b-db2dq          Readiness probe failed: Get \"http://10.244.0.160:80/healthz\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)\n83s         Warning   Unhealthy           pod/web-86cc98785b-db2dq          Readiness probe failed: HTTP probe failed with statuscode: 502\n79s         Warning   Unhealthy           pod/web-86cc98785b-4vd8k          Readiness probe failed: HTTP probe failed with statuscode: 502\n63s         Normal    Scheduled           pod/web-765c764598-mfr77          Successfully assigned shop/web-765c764598-mfr77 to oncall-lab-control-plane\n63s         Normal    SuccessfulCreate    replicaset/web-765c764598         Created pod: web-765c764598-mfr77\n63s         Warning   Unhealthy           pod/web-765c764598-mfr77          Readiness probe failed: Get \"http://10.244.0.164:80/healthz\": dial tcp 10.244.0.164:80: connect: connection refused\n63s         Normal    ScalingReplicaSet   deployment/worker                 Scaled down replica set worker-85767c58ff from 1 to 0\n63s         Normal    ScalingReplicaSet   deployment/worker                 Scaled up replica set worker-8d9d856dd from 0 to 1\n63s         Normal    Started             pod/web-765c764598-mfr77          Container started\n63s         Normal    Created             pod/web-765c764598-mfr77          Container created\n63s         Normal    SuccessfulCreate    replicaset/worker-8d9d856dd       Created pod: worker-8d9d856dd-lmgtg\n63s         Normal    Scheduled           pod/worker-8d9d856dd-lmgtg        Successfully assigned shop/worker-8d9d856dd-lmgtg to oncall-lab-control-plane\n63s         Normal    Pulled              pod/web-765c764598-mfr77          Container image \"nginx:1.29-alpine\" already present on machine and can be accessed by the pod\n63s         Normal    ScalingReplicaSet   deployment/web                    Scaled up replica set web-765c764598 from 0 to 1\n63s         Normal    Killing             pod/worker-85767c58ff-9xtvw       Stopping container worker\n63s         Normal    SuccessfulDelete    replicaset/worker-85767c58ff      Deleted pod: worker-85767c58ff-9xtvw\n62s         Normal    Started             pod/web-765c764598-9cn5d          Container started\n62s         Normal    SuccessfulDelete    replicaset/web-86cc98785b         Deleted pod: web-86cc98785b-db2dq\n62s         Normal    ScalingReplicaSet   deployment/web                    Scaled up replica set web-765c764598 from 1 to 2\n62s         Normal    SuccessfulCreate    replicaset/web-765c764598         Created pod: web-765c764598-9cn5d\n62s         Normal    Created             pod/web-765c764598-9cn5d          Container created\n62s         Normal    ScalingReplicaSet   deployment/web                    Scaled down replica set web-86cc98785b from 2 to 1\n62s         Normal    Pulled              pod/web-765c764598-9cn5d          Container image \"nginx:1.29-alpine\" already present on machine and can be accessed by the pod\n62s         Warning   Unhealthy           pod/web-765c764598-9cn5d          Readiness probe","more":1},{"t":3.0,"kind":"run","cmd":"kubectl get pods -n shop -o wide && kubectl get pods -n kube-system","out":"NAME                         READY   STATUS      RESTARTS      AGE   IP             NODE                       NOMINATED NODE   READINESS GATES\napi-7d87b9fcf5-8wxw4         1/1     Running     0             85s   10.244.0.157   oncall-lab-control-plane   <none>           <none>\napi-7d87b9fcf5-9p4q4         1/1     Running     0             85s   10.244.0.158   oncall-lab-control-plane   <none>           <none>\ndb-5c45bf6fd6-sn2ln          1/1     Running     0             85s   10.244.0.156   oncall-lab-control-plane   <none>           <none>\nsynthetic-5cc5f987df-ggntj   1/1     Running     0             85s   10.244.0.162   oncall-lab-control-plane   <none>           <none>\nweb-765c764598-9cn5d         1/1     Running     0             62s   10.244.0.165   oncall-lab-control-plane   <none>           <none>\nweb-765c764598-mfr77         1/1     Running     0             63s   10.244.0.164   oncall-lab-control-plane   <none>           <none>\nworker-8d9d856dd-lmgtg       0/1     OOMKilled   3 (50s ago)   63s   10.244.0.163   oncall-lab-control-plane   <none>           <none>\nNAME                                               READY   STATUS    RESTARTS   AGE\ncoredns-8b8844767-rhhrb                            1/1     Running   0          59m\ncoredns-8b8844767-sbpgv                            1/1     Running   0          59m\netcd-oncall-lab-control-plane                      1/1     Running   0          14h\nkindnet-mpj27                                      1/1     Running   0          14h\nkube-apiserver-oncall-lab-control-plane            1/1     Running   0          14h\nkube-controller-manager-oncall-lab-control-plane   1/1     Running   0          14h\nkube-proxy-hgvm7                                   1/1     Running   0          14h\nkube-scheduler-oncall-lab-control-plane            1/1     Running   0          14h","more":0},{"t":7.7,"kind":"say","text":"Initial findings: `web` and `worker` both just rolled out (~63s ago), the new `web` pods are failing readiness with 502s, and `worker` is OOMKilled. Let me check the rollouts and the failure pattern per the runbook."},{"t":7.8,"kind":"run","cmd":"kubectl -n shop logs deploy/synthetic --tail=20","out":"2026-11-03T18:09:09Z GET /orders 200\n2026-11-03T18:09:11Z GET /orders 200\n2026-11-03T18:09:13Z GET /orders 200\n2026-11-03T18:09:15Z GET /orders 200\n2026-11-03T18:09:19Z GET /orders 504\n2026-11-03T18:09:23Z GET /orders 504\n2026-11-03T18:09:27Z GET /orders 504\n2026-11-03T18:09:31Z GET /orders 504\n2026-11-03T18:09:35Z GET /orders 504\n2026-11-03T18:09:39Z GET /orders 504\n2026-11-03T18:09:43Z GET /orders 504\n2026-11-03T18:09:47Z GET /orders 504\n2026-11-03T18:09:51Z GET /orders 504\n2026-11-03T18:09:55Z GET /orders 504\n2026-11-03T18:09:59Z GET /orders 504\n2026-11-03T18:10:03Z GET /orders 504\n2026-11-03T18:10:07Z GET /orders 504\n2026-11-03T18:10:11Z GET /orders 504\n2026-11-03T18:10:15Z GET /orders 504\n2026-11-03T18:10:19Z GET /orders 504","more":0},{"t":7.8,"kind":"run","cmd":"kubectl -n shop get deploy,rs,svc,endpoints,ep -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           90s   api          python:3.13-alpine       app=api\ndeployment.apps/db          1/1     1            1           90s   postgres     postgres:17-alpine       app=db\ndeployment.apps/synthetic   1/1     1            1           90s   curl         curlimages/curl:8.17.0   app=synthetic\ndeployment.apps/web         2/2     2            2           90s   nginx        nginx:1.29-alpine        app=web\ndeployment.apps/worker      0/1     1            0           90s   worker       python:3.13-alpine       app=worker\n\nNAME                                   DESIRED   CURRENT   READY   AGE   CONTAINERS   IMAGES                   SELECTOR\nreplicaset.apps/api-7d87b9fcf5         2         2         2       90s   api          python:3.13-alpine       app=api,pod-template-hash=7d87b9fcf5\nreplicaset.apps/db-5c45bf6fd6          1         1         1       90s   postgres     postgres:17-alpine       app=db,pod-template-hash=5c45bf6fd6\nreplicaset.apps/synthetic-5cc5f987df   1         1         1       90s   curl         curlimages/curl:8.17.0   app=synthetic,pod-template-hash=5cc5f987df\nreplicaset.apps/web-765c764598         2         2         2       68s   nginx        nginx:1.29-alpine        app=web,pod-template-hash=765c764598\nreplicaset.apps/web-86cc98785b         0         0         0       90s   nginx        nginx:1.29-alpine        app=web,pod-template-hash=86cc98785b\nreplicaset.apps/worker-85767c58ff      0         0         0       90s   worker       python:3.13-alpine       app=worker,pod-template-hash=85767c58ff\nreplicaset.apps/worker-8d9d856dd       1         1         0       68s   worker       python:3.13-alpine       app=worker,pod-template-hash=8d9d856dd\n\nNAME          TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)    AGE   SELECTOR\nservice/api   ClusterIP   10.96.89.122    <none>        8080/TCP   90s   app=api\nservice/db    ClusterIP   10.96.220.85    <none>        5432/TCP   90s   app=db\nservice/web   ClusterIP   10.96.240.147   <none>        80/TCP     90s   app=web\n\nNAME            ENDPOINTS                             AGE\nendpoints/api   10.244.0.157:8080,10.244.0.158:8080   90s\nendpoints/db    10.244.0.156:5432                     90s\nendpoints/web   10.244.0.164:80,10.244.0.165:80       90s","more":0},{"t":7.9,"kind":"run","cmd":"kubectl -n shop rollout history deploy/web && kubectl -n shop rollout history deploy/api && kubectl -n shop rollout history deploy/worker","out":"deployment.apps/web \nREVISION  CHANGE-CAUSE\n1         <none>\n2         release 2026.11.3: edge routing for orders-v2\n\ndeployment.apps/api \nREVISION  CHANGE-CAUSE\n1         <none>\n\ndeployment.apps/worker \nREVISION  CHANGE-CAUSE\n1         <none>\n2         <none>","more":0},{"t":14.1,"kind":"say","text":"The `synthetic` log shows `/orders` flipping from 200 to 504 at 18:09:19Z — matching the `web` revision 2 rollout (\"edge routing for orders-v2\"). Endpoints look fine, so this smells like a bad nginx config in the new rollout. Let me inspect the web config and logs."},{"t":14.1,"kind":"run","cmd":"kubectl -n shop logs deploy/web --tail=30","out":"Found 2 pods, using pod/web-765c764598-mfr77\n10.244.0.1 - - [03/Nov/2026:18:09:19 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.162 - - [03/Nov/2026:18:09:19 +0000] \"GET /orders HTTP/1.1\" 504 167 \"-\" \"curl/8.17.0\" \"-\"\n2026/11/03 18:09:19 [error] 31#31: *3 upstream timed out (110: Operation timed out) while connecting to upstream, client: 10.244.0.162, server: , request: \"GET /orders HTTP/1.1\", upstream: \"http://10.96.200.200:8080/orders\", host: \"web\"\n2026/11/03 18:09:23 [error] 32#32: *7 upstream timed out (110: Operation timed out) while connecting to upstream, client: 10.244.0.162, server: , request: \"GET /orders HTTP/1.1\", upstream: \"http://10.96.200.200:8080/orders\", host: \"web\"\n10.244.0.162 - - [03/Nov/2026:18:09:23 +0000] \"GET /orders HTTP/1.1\" 504 167 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.1 - - [03/Nov/2026:18:09:24 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n2026/11/03 18:09:27 [error] 30#30: *11 upstream timed out (110: Operation timed out) while connecting to upstream, client: 10.244.0.162, server: , request: \"GET /orders HTTP/1.1\", upstream: \"http://10.96.200.200:8080/orders\", host: \"web\"\n10.244.0.162 - - [03/Nov/2026:18:09:27 +0000] \"GET /orders HTTP/1.1\" 504 167 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.1 - - [03/Nov/2026:18:09:29 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n2026/11/03 18:09:31 [error] 29#29: *15 upstream timed out (110: Operation timed out) while connecting to upstream, client: 10.244.0.162, server: , request: \"GET /orders HTTP/1.1\", upstream: \"http://10.96.200.200:8080/orders\", host: \"web\"\n10.244.0.162 - - [03/Nov/2026:18:09:31 +0000] \"GET /orders HTTP/1.1\" 504 167 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.1 - - [03/Nov/2026:18:09:34 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.1 - - [03/Nov/2026:18:09:39 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.1 - - [03/Nov/2026:18:09:44 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.1 - - [03/Nov/2026:18:09:49 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.1 - - [03/Nov/2026:18:09:54 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.1 - - [03/Nov/2026:18:09:59 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n2026/11/03 18:10:03 [error] 28#28: *29 upstream timed out (110: Operation timed out) while connecting to upstream, client: 10.244.0.162, server: , request: \"GET /orders HTTP/1.1\", upstream: \"http://10.96.200.200:8080/orders\", host: \"web\"\n10.244.0.162 - - [03/Nov/2026:18:10:03 +0000] \"GET /orders HTTP/1.1\" 504 167 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.1 - - [03/Nov/2026:18:10:04 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n2026/11/03 18:10:07 [error] 28#28: *33 upstream timed out (110: Operation timed out) while connecting to upstream, client: 10.244.0.162, server: , request: \"GET /orders HTTP/1.1\", upstream: \"http://10.96.200.200:8080/orders\", host: \"web\"\n10.244.0.162 - - [03/Nov/2026:18:10:07 +0000] \"GET /orders HTTP/1.1\" 504 167 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.1 - - [03/Nov/2026:18:10:09 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.1 - - [03/Nov/2026:18:10:14 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.1 - - [03/Nov/2026:18:10:19 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n2026/11/03 18:10:19 [error] 28#28: *39 upstream timed out (110: Operation timed out) while connecting to upstream, client: 10.244.0.162, server: , request: \"GET /orders HTTP/1.1\", upstream: \"http://10.96.200.200:8080/orders\", host: \"web\"\n10.244.0.162 - - [03/Nov/2026:18:10:19 +0000] \"GET /orders HTTP/1.1\" 504 167 \"-\" \"curl/8.17.0\" \"-\"\n2026/11/03 18:10:23 [error] 28#28: *43 upstream timed out (110: Operation timed out) while connecting to upstream, client: 10.244.0.162, server: , request: \"GET /orders HTTP/1.1\", upstream: \"http://10.96.200.200:8080/orders\", host: \"web\"\n10.244.0.162 - - [03/Nov/2026:18:10:23 +0000] \"","more":1},{"t":14.1,"kind":"run","cmd":"kubectl -n shop logs deploy/api --tail=15","out":"Found 2 pods, using pod/api-7d87b9fcf5-8wxw4\napi listening on 8080, db=db:5432","more":0},{"t":14.2,"kind":"run","cmd":"kubectl -n shop get configmap && kubectl -n shop get configmap -o yaml","out":"NAME               DATA   AGE\napi-code           2      96s\napi-config         2      96s\nkube-root-ca.crt   1      96s\nweb-nginx          1      96s\nweb-nginx-v3       1      74s\napiVersion: 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())}]})","more":107},{"t":30.2,"kind":"say","text":"Root cause candidate found: the new `web-nginx-v3` ConfigMap (created 18:09:13Z, right when failures started) routes `/` (which includes `/orders`) to a hardcoded upstream `http://10.96.200.200:8080` that doesn't respond, while `/healthz` still proxies to `api:8080` (so readiness passes). Nginx logs confirm: `upstream timed out ... upstream: \"http://10.96.200.200:8080/orders\"`.\n\nLet me verify what that IP is, confirm revision 1 of `web` mounts the good `web-nginx` config, and inspect the `worker` OOM."},{"t":30.4,"kind":"run","cmd":"kubectl -n shop describe pod worker-8d9d856dd-lmgtg | tail -25 && kubectl -n shop logs worker-8d9d856dd-lmgtg --previous --tail=10","out":"  ContainersReady             False \n  PodScheduled                True \nVolumes:\n  code:\n    Type:      ConfigMap (a volume populated by a ConfigMap)\n    Name:      api-code\n    Optional:  false\n  kube-api-access-bqgnt:\n    Type:                    Projected (a volume that contains injected data from multiple sources)\n    TokenExpirationSeconds:  3607\n    ConfigMapName:           kube-root-ca.crt\n    Optional:                false\n    DownwardAPI:             true\nQoS Class:                   Burstable\nNode-Selectors:              <none>\nTolerations:                 node.kubernetes.io/not-ready:NoExecute op=Exists for 300s\n                             node.kubernetes.io/unreachable:NoExecute op=Exists for 300s\nEvents:\n  Type     Reason     Age                From               Message\n  ----     ------     ----               ----               -------\n  Normal   Scheduled  90s                default-scheduler  Successfully assigned shop/worker-8d9d856dd-lmgtg to oncall-lab-control-plane\n  Normal   Pulled     55s (x4 over 90s)  kubelet            spec.containers{worker}: Container image \"python:3.13-alpine\" already present on machine and can be accessed by the pod\n  Normal   Created    54s (x4 over 90s)  kubelet            spec.containers{worker}: Container created\n  Normal   Started    54s (x4 over 90s)  kubelet            spec.containers{worker}: Container started\n  Warning  BackOff    54s (x3 over 88s)  kubelet            spec.containers{worker}: Back-off restarting failed container worker in pod worker-8d9d856dd-lmgtg_shop(70df16a6-94fd-4059-b3fd-db10641f3fd3)\nunable to retrieve container logs for containerd://4902a3da61cef5425e4ac4a7ab34d4876c683d7f3381553ae04eef5ff9993f24","more":0},{"t":30.4,"kind":"run","cmd":"kubectl get svc -A -o custom-columns='NS:.metadata.namespace,NAME:.metadata.name,IP:.spec.clusterIP' | grep -E '10\\.96\\.200\\.200|api|web' ; kubectl -n shop rollout history deploy/web --revision=1 ; kubectl -n shop rollout history deploy/web --revision=2","out":"shop          api          10.96.89.122\nshop          web          10.96.240.147\ndeployment.apps/web with revision #1\nPod Template:\n  Labels:\tapp=web\n\tpod-template-hash=86cc98785b\n  Containers:\n   nginx:\n    Image:\tnginx:1.29-alpine\n    Port:\t80/TCP\n    Host Port:\t0/TCP\n    Readiness:\thttp-get http://:80/healthz delay=0s timeout=1s period=5s successThreshold=1 failureThreshold=3\n    Environment:\t<none>\n    Mounts:\n      /etc/nginx/conf.d from conf (rw)\n  Volumes:\n   conf:\n    Type:\tConfigMap (a volume populated by a ConfigMap)\n    Name:\tweb-nginx\n    Optional:\tfalse\n  Node-Selectors:\t<none>\n  Tolerations:\t<none>\n\ndeployment.apps/web with revision #2\nPod Template:\n  Labels:\tapp=web\n\tpod-template-hash=765c764598\n  Annotations:\tkubernetes.io/change-cause: release 2026.11.3: edge routing for orders-v2\n  Containers:\n   nginx:\n    Image:\tnginx:1.29-alpine\n    Port:\t80/TCP\n    Host Port:\t0/TCP\n    Readiness:\thttp-get http://:80/healthz delay=0s timeout=1s period=5s successThreshold=1 failureThreshold=3\n    Environment:\t<none>\n    Mounts:\n      /etc/nginx/conf.d from conf (rw)\n  Volumes:\n   conf:\n    Type:\tConfigMap (a volume populated by a ConfigMap)","more":4},{"t":30.4,"kind":"run","cmd":"kubectl -n shop get deploy worker -o jsonpath='{.spec.template.spec.containers[0].name}{\" limits=\"}{.spec.template.spec.containers[0].resources.limits}{\" env=\"}{.spec.template.spec.containers[0].env}{\"\\n\"}' && kubectl -n shop rollout history deploy/worker --revision=2 && kubectl -n shop rollout history deploy/worker --revision=1","out":"worker limits={\"memory\":\"192Mi\"} env=[{\"name\":\"BATCH_MB\",\"value\":\"230\"}]\ndeployment.apps/worker with revision #2\nPod Template:\n  Labels:\tapp=worker\n\tpod-template-hash=8d9d856dd\n  Containers:\n   worker:\n    Image:\tpython:3.13-alpine\n    Port:\t<none>\n    Host Port:\t<none>\n    Command:\n      python\n      -u\n      /app/worker.py\n    Limits:\n      memory:\t192Mi\n    Requests:\n      cpu:\t50m\n      memory:\t96Mi\n    Environment:\n      BATCH_MB:\t230\n    Mounts:\n      /app from code (rw)\n  Volumes:\n   code:\n    Type:\tConfigMap (a volume populated by a ConfigMap)\n    Name:\tapi-code\n    Optional:\tfalse\n  Node-Selectors:\t<none>\n  Tolerations:\t<none>\n\ndeployment.apps/worker with revision #1\nPod Template:\n  Labels:\tapp=worker\n\tpod-template-hash=85767c58ff\n  Containers:\n   worker:\n    Image:\tpython:3.13-alpine\n    Port:\t<none>\n    Host Port:\t<none>","more":20},{"t":39.1,"kind":"say","text":"Diagnosis is now complete and confirmed:\n\n1. **web 504s**: revision 2 of `deploy/web` mounts ConfigMap `web-nginx-v3`, which proxies `/` to hardcoded `http://10.96.200.200:8080` — an IP owned by no service in the cluster (`api` is `10.96.89.122`). `/healthz` still targets `api:8080`, so readiness passes while `/orders` 504s. The rollout matches the failure start (first 504 at 18:09:19Z, config created 18:09:13Z).\n2. **worker OOMKilled crashloop**: revision 2 of `deploy/worker` raised `BATCH_MB` from 64 → 230 while keeping the memory limit at 192Mi; the worker allocates a 230MiB buffer → guaranteed OOM.\n\nBoth are config errors with runbook-approved fixes: `rollout undo` for `web` (prescribed for a rollout matching the failure start), and raising `worker`'s memory limit up to 512Mi (explicitly allowed). Taking both actions now."},{"t":39.6,"kind":"run","cmd":"kubectl -n shop set resources deploy/worker --limits=memory=512Mi && kubectl -n shop rollout status deploy/worker --timeout=120s","out":"deployment.apps/worker resource requirements updated\nWaiting for deployment \"worker\" rollout to finish: 1 old replicas are pending termination...\nWaiting for deployment \"worker\" rollout to finish: 1 old replicas are pending termination...\nWaiting for deployment \"worker\" rollout to finish: 1 old replicas are pending termination...\ndeployment \"worker\" successfully rolled out","more":0},{"t":40.7,"kind":"run","cmd":"kubectl -n shop rollout undo deploy/web && kubectl -n shop rollout status deploy/web --timeout=90s","out":"Warning: resource deployments/web was previously managed with 'kubectl apply'. Rolling back will not update the kubectl.kubernetes.io/last-applied-configuration annotation, which may cause unexpected behavior on future 'kubectl apply' operations. Consider using 'kubectl apply' with your previous configuration file instead.\ndeployment.apps/web rolled back\nWaiting for deployment \"web\" rollout to finish: 1 out of 2 new replicas have been updated...\nWaiting for deployment \"web\" rollout to finish: 1 out of 2 new replicas have been updated...\nWaiting for deployment \"web\" rollout to finish: 1 out of 2 new replicas have been updated...\nWaiting for deployment \"web\" rollout to finish: 1 old replicas are pending termination...\nWaiting for deployment \"web\" rollout to finish: 1 old replicas are pending termination...\nWaiting for deployment \"web\" rollout to finish: 1 old replicas are pending termination...\ndeployment \"web\" successfully rolled out","more":0},{"t":42.9,"kind":"say","text":"Both rollouts completed. Verifying recovery via the synthetic probe and worker logs."},{"t":58.1,"kind":"run","cmd":"sleep 15; kubectl -n shop get pods && kubectl -n shop logs deploy/synthetic --tail=12","out":"NAME                         READY   STATUS    RESTARTS   AGE\napi-7d87b9fcf5-8wxw4         1/1     Running   0          2m20s\napi-7d87b9fcf5-9p4q4         1/1     Running   0          2m20s\ndb-5c45bf6fd6-sn2ln          1/1     Running   0          2m20s\nsynthetic-5cc5f987df-ggntj   1/1     Running   0          2m20s\nweb-86cc98785b-6kb26         1/1     Running   0          19s\nweb-86cc98785b-vjzvb         1/1     Running   0          18s\nworker-86b99c45d7-j9zt2      1/1     Running   0          19s\n2026-11-03T18:10:39Z GET /orders 504\n2026-11-03T18:10:43Z GET /orders 504\n2026-11-03T18:10:47Z GET /orders 504\n2026-11-03T18:10:51Z GET /orders 504\n2026-11-03T18:10:55Z GET /orders 504\n2026-11-03T18:10:57Z GET /orders 200\n2026-11-03T18:10:59Z GET /orders 200\n2026-11-03T18:11:01Z GET /orders 200\n2026-11-03T18:11:03Z GET /orders 200\n2026-11-03T18:11:05Z GET /orders 200\n2026-11-03T18:11:07Z GET /orders 200\n2026-11-03T18:11:09Z GET /orders 200","more":0},{"t":60.8,"kind":"say","text":"`/orders` is back to 200s as of 18:10:57Z and the worker pod is Running with no restarts. One last confirmation that the worker is actually processing batches:"},{"t":60.8,"kind":"run","cmd":"kubectl -n shop logs deploy/worker --tail=6","out":"worker started, batch buffer 230 MiB\nprocessed batch\nprocessed batch\nprocessed batch\nprocessed batch\nprocessed batch","more":0}],"report":"Both issues are fixed and verified. Here is the incident report in the runbook's format:\n\n---\n\n**IMPACT:** All customer traffic to `shop` service `web/orders` failed with HTTP 504 (upstream timeout) — 100% of requests from 18:09:19Z to 18:10:57Z UTC (~100s in this window; the alert had been firing at >5% for 5m prior). Separately, `worker` was in an OOMKilled crashloop from ~18:09:16Z to ~18:10:39Z and processed no job batches during that time. No data loss.\n\n**ROOT CAUSE:**\n1. ConfigMap `shop/web-nginx-v3` (`data.default.conf`), mounted by `deploy/shop/web` revision 2 (change-cause \"release 2026.11.3: edge routing for orders-v2\"): it proxied `/` (including `/orders`) to hardcoded `http://10.96.200.200:8080`, a cluster IP that belongs to no service (`api` is `10.96.89.122`), so every `/orders` request timed out. `/healthz` still proxied to `api:8080`, so readiness probes passed and broken pods served traffic.\n2. `deploy/shop/worker` revision 2 set env `BATCH_MB=230` but left the container memory limit at 192Mi; the worker allocates a 230MiB buffer, guaranteeing OOMKill → CrashLoopBackOff.\n\n**ACTIONS TAKEN:**\n1. Triaged per runbook: checked `synthetic` logs (504s began 18:09:19Z), rollout history, pods/endpoints, and nginx logs (`upstream timed out ... upstream: \"http://10.96.200.200:8080/orders\"`).\n2. `kubectl -n shop rollout undo deploy/web` — the rollout matched the failure start time exactly; rollback restored revision 1's template, which mounts ConfigMap `web-nginx` (proxying to `api:8080` by name). Rollout completed.\n3. `kubectl -n shop set resources deploy/worker --limits=memory=512Mi` — raised the worker memory limit to the runbook-approved maximum (≤512Mi) so the intentional `BATCH_MB=230` batch size fits; kept their change rather than rolling it back. Rollout completed.\n\n**STATUS:** resolved. Evidence: `synthetic` logs show continuous `GET /orders 200` from 18:10:57Z onward after the rollback; `worker` pod Running 1/1 with zero restarts and logs showing `processed batch` with the 230MiB buffer; all `shop` pods Ready.\n\n**ESCALATION:** none. Both fixes (rollback of a bad rollout; worker memory limit ≤512Mi) were within runbook authority and risked no customer data.\n\n**FOLLOW-UP:** Re-land the orders-v2 edge routing using the `api` service DNS name instead of a hardcoded ClusterIP, and add a post-rollout synthetic check (or readiness probe against `/orders`) so a config that only passes `/healthz` can't take 100% of order traffic; also add a deploy-time check that `BATCH_MB` fits within the worker's memory limit."}