{"id":"s6-cohere-north-mini-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/`.\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%). synthetic probe reports status 000.","steps":[{"t":3.7,"kind":"run","cmd":"kubectl -n shop get pods","out":"NAME READY STATUS RESTARTS AGE\napi-7d87b9fcf5-87ll6 1/1 Running 0 82s\napi-7d87b9fcf5-lzfx4 1/1 Running 0 82s\ndb-5c45bf6fd6-ttwrs 1/1 Running 0 82s\nsynthetic-5cc5f987df-qxh9z 1/1 Running 0 82s\nweb-86cc98785b-2wmb7 1/1 Running 0 82s\nweb-86cc98785b-8rxb9 1/1 Running 0 82s\nworker-85767c58ff-bbpjn 1/1 Running 0 82s","more":0},{"t":5.3,"kind":"run","cmd":"kubectl -n shop rollout history deploy","out":"deployment.apps/api \nREVISION CHANGE-CAUSE\n1 \n\ndeployment.apps/db \nREVISION CHANGE-CAUSE\n1 \n\ndeployment.apps/synthetic \nREVISION CHANGE-CAUSE\n1 \n\ndeployment.apps/web \nREVISION CHANGE-CAUSE\n1 \n\ndeployment.apps/worker \nREVISION CHANGE-CAUSE\n1 ","more":0},{"t":6.7,"kind":"run","cmd":"kubectl -n shop logs synthetic-5cc5f987df-qxh9z --tail=100","out":"2026-11-03T16:12:58Z GET /orders 000\n2026-11-03T16:13:00Z GET /orders 000\n2026-11-03T16:13:02Z GET /orders 000\n2026-11-03T16:13:04Z GET /orders 200\n2026-11-03T16:13:06Z GET /orders 200\n2026-11-03T16:13:08Z GET /orders 200\n2026-11-03T16:13:10Z GET /orders 200\n2026-11-03T16:13:12Z GET /orders 200\n2026-11-03T16:13:14Z GET /orders 200\n2026-11-03T16:13:16Z GET /orders 200\n2026-11-03T16:13:18Z GET /orders 200\n2026-11-03T16:13:24Z GET /orders 000\n2026-11-03T16:13:30Z GET /orders 000\n2026-11-03T16:13:36Z GET /orders 000\n2026-11-03T16:13:42Z GET /orders 000\n2026-11-03T16:13:48Z GET /orders 000\n2026-11-03T16:13:54Z GET /orders 000\n2026-11-03T16:14:00Z GET /orders 000\n2026-11-03T16:14:06Z GET /orders 000\n2026-11-03T16:14:12Z GET /orders 000\n2026-11-03T16:14:18Z GET /orders 000","more":0},{"t":8.7,"kind":"run","cmd":"kubectl -n shop logs web-86cc98785b-2wmb7 --tail=50","out":"/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 16:12:57 [notice] 1#1: using the \"epoll\" event method\n2026/11/03 16:12:57 [notice] 1#1: nginx/1.29.8\n2026/11/03 16:12:57 [notice] 1#1: built by gcc 15.2.0 (Alpine 15.2.0) \n2026/11/03 16:12:57 [notice] 1#1: OS: Linux 6.8.0-117-generic\n2026/11/03 16:12:57 [notice] 1#1: getrlimit(RLIMIT_NOFILE): 1073741816:1073741816\n2026/11/03 16:12:57 [notice] 1#1: start worker processes\n2026/11/03 16:12:57 [notice] 1#1: start worker process 28\n2026/11/03 16:12:57 [notice] 1#1: start worker process 29\n2026/11/03 16:12:57 [notice] 1#1: start worker process 30\n2026/11/03 16:12:57 [notice] 1#1: start worker process 31\n2026/11/03 16:12:57 [notice] 1#1: start worker process 32\n2026/11/03 16:12:57 [notice] 1#1: start worker process 33\n2026/11/03 16:12:57 [notice] 1#1: start worker process 34\n2026/11/03 16:12:57 [notice] 1#1: start worker process 35\n10.244.0.1 - - [03/Nov/2026:16:12:58 +0000] \"GET /healthz HTTP/1.1\" 502 157 \"-\" \"kube-probe/1.37\" \"-\"\n2026/11/03 16:12:58 [error] 29#29: *1 connect() failed (111: Connection refused) while connecting to upstream, client: 10.244.0.1, server: , request: \"GET /healthz HTTP/1.1\", upstream: \"http://10.96.52.187:8080/healthz\", host: \"10.244.0.239:80\"\n10.244.0.1 - - [03/Nov/2026:16:13:03 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.240 - - [03/Nov/2026:16:13:06 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.1 - - [03/Nov/2026:16:13:08 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.240 - - [03/Nov/2026:16:13:08 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.240 - - [03/Nov/2026:16:13:09 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.240 - - [03/Nov/2026:16:13:10 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.240 - - [03/Nov/2026:16:13:11 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.240 - - [03/Nov/2026:16:13:12 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.240 - - [03/Nov/2026:16:13:12 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.1 - - [03/Nov/2026:16:13:13 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.240 - - [03/Nov/2026:16:13:14 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.240 - - [03/Nov/2026:16:13:16 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.1 - - [03/Nov/2026:16:13:18 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.240 - - [03/Nov/2026:16:13:18 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.1 - - [03/Nov/2026:16:13:23 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.1 - - [03/Nov/2026:16:13:28 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.1 - - [03/Nov/2026:16:13:33 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"","more":10},{"t":11.4,"kind":"run","cmd":"kubectl -n shop logs web-86cc98785b-8rxb9 --tail=50","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 16:12:57 [notice] 1#1: using the \"epoll\" event method\n2026/11/03 16:12:57 [notice] 1#1: nginx/1.29.8\n2026/11/03 16:12:57 [notice] 1#1: built by gcc 15.2.0 (Alpine 15.2.0) \n2026/11/03 16:12:57 [notice] 1#1: OS: Linux 6.8.0-117-generic\n2026/11/03 16:12:57 [notice] 1#1: getrlimit(RLIMIT_NOFILE): 1073741816:1073741816\n2026/11/03 16:12:57 [notice] 1#1: start worker processes\n2026/11/03 16:12:57 [notice] 1#1: start worker process 28\n2026/11/03 16:12:57 [notice] 1#1: start worker process 29\n2026/11/03 16:12:57 [notice] 1#1: start worker process 30\n2026/11/03 16:12:57 [notice] 1#1: start worker process 31\n2026/11/03 16:12:57 [notice] 1#1: start worker process 32\n2026/11/03 16:12:57 [notice] 1#1: start worker process 33\n2026/11/03 16:12:57 [notice] 1#1: start worker process 34\n2026/11/03 16:12:57 [notice] 1#1: start worker process 35\n2026/11/03 16:12:58 [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://10.96.52.187:8080/healthz\", host: \"10.244.0.238:80\"\n10.244.0.1 - - [03/Nov/2026:16:12:58 +0000] \"GET /healthz HTTP/1.1\" 502 157 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.1 - - [03/Nov/2026:16:13:03 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.240 - - [03/Nov/2026:16:13:04 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.1 - - [03/Nov/2026:16:13:08 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.240 - - [03/Nov/2026:16:13:08 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.240 - - [03/Nov/2026:16:13:08 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.240 - - [03/Nov/2026:16:13:10 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.240 - - [03/Nov/2026:16:13:10 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.240 - - [03/Nov/2026:16:13:12 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.1 - - [03/Nov/2026:16:13:13 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.240 - - [03/Nov/2026:16:13:13 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.240 - - [03/Nov/2026:16:13:13 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.1 - - [03/Nov/2026:16:13:18 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.1 - - [03/Nov/2026:16:13:23 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.1 - - [03/Nov/2026:16:13:28 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.1 - - [03/Nov/2026:16:13:33 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.1 - - [03/Nov/2026:16:13:38 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"","more":9},{"t":13.5,"kind":"run","cmd":"kubectl -n shop logs api-7d87b9fcf5-87ll6 --tail=50","out":"api listening on 8080, db=db:5432","more":0},{"t":14.7,"kind":"run","cmd":"kubectl -n shop logs api-7d87b9fcf5-lzfx4 --tail=50","out":"api listening on 8080, db=db:5432","more":0},{"t":15.6,"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 10.244.0.235:8080,10.244.0.236:8080 94s\ndb 10.244.0.234:5432 94s\nweb 10.244.0.238:80,10.244.0.239:80 94s","more":0},{"t":17.2,"kind":"run","cmd":"kubectl -n shop get svc","out":"NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE\napi ClusterIP 10.96.52.187 8080/TCP 95s\ndb ClusterIP 10.96.69.220 5432/TCP 95s\nweb ClusterIP 10.96.108.47 80/TCP 95s","more":0},{"t":18.8,"kind":"run","cmd":"kubectl -n shop describe deploy synthetic","out":"Name: synthetic\nNamespace: shop\nCreationTimestamp: Tue, 03 Nov 2026 16:12:56 +0000\nLabels: app=synthetic\nAnnotations: deployment.kubernetes.io/revision: 1\nSelector: app=synthetic\nReplicas: 1 desired | 1 updated | 1 total | 1 available | 0 unavailable\nStrategyType: RollingUpdate\nMinReadySeconds: 0\nRollingUpdateStrategy: 25% max unavailable, 25% max surge\nPod Template:\n Labels: app=synthetic\n Containers:\n curl:\n Image: curlimages/curl:8.17.0\n Port: \n Host Port: \n Command:\n sh\n -c\n while true; do c=$(curl -s -o /dev/null -w \"%{http_code}\" -m 4 http://web/orders); echo \"$(date -u +%FT%TZ) GET /orders $c\"; sleep 2; done\n Environment: \n Mounts: \n Volumes: \n Node-Selectors: \n Tolerations: \nConditions:\n Type Status Reason\n ---- ------ ------\n Available True MinimumReplicasAvailable\n Progressing True NewReplicaSetAvailable\nOldReplicaSets: \nNewReplicaSet: synthetic-5cc5f987df (1/1 replicas created)\nEvents:\n Type Reason Age From Message\n ---- ------ ---- ---- -------\n Normal ScalingReplicaSet 97s deployment-controller Scaled up replica set synthetic-5cc5f987df from 0 to 1","more":0},{"t":21.0,"kind":"run","cmd":"kubectl -n shop describe deploy web","out":"Name: web\nNamespace: shop\nCreationTimestamp: Tue, 03 Nov 2026 16:12:56 +0000\nLabels: app=web\nAnnotations: deployment.kubernetes.io/revision: 1\nSelector: app=web\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=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: \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: \n Tolerations: \nConditions:\n Type Status Reason\n ---- ------ ------\n Available True MinimumReplicasAvailable\n Progressing True NewReplicaSetAvailable\nOldReplicaSets: \nNewReplicaSet: web-86cc98785b (2/2 replicas created)\nEvents:\n Type Reason Age From Message\n ---- ------ ---- ---- -------\n Normal ScalingReplicaSet 99s deployment-controller Scaled up replica set web-86cc98785b from 0 to 2","more":0},{"t":25.6,"kind":"run","cmd":"kubectl -n shop get configmap web-nginx -o yaml","out":"apiVersion: v1\ndata:\n default.conf: |\n server {\n listen 80;\n location / { proxy_pass http://api:8080; proxy_connect_timeout 2s; proxy_read_timeout 3s; }\n }\nkind: ConfigMap\nmetadata:\n annotations:\n kubectl.kubernetes.io/last-applied-configuration: |\n {\"apiVersion\":\"v1\",\"data\":{\"default.conf\":\"server {\\n listen 80;\\n location / { proxy_pass http://api:8080; proxy_connect_timeout 2s; proxy_read_timeout 3s; }\\n}\\n\"},\"kind\":\"ConfigMap\",\"metadata\":{\"annotations\":{},\"name\":\"web-nginx\",\"namespace\":\"shop\"}}\n creationTimestamp: \"2026-11-03T16:12:56Z\"\n name: web-nginx\n namespace: shop\n resourceVersion: \"125412\"\n uid: 73d2c954-8516-4ae7-aa3d-c5721e462b3d","more":0},{"t":29.4,"kind":"denied","cmd":"nslookup api.shop","out":"Permission denied: shell","more":0},{"t":30.6,"kind":"run","cmd":"kubectl -n kube-system get svc coredns","out":"Error from server (NotFound): services \"coredns\" not found","more":0},{"t":33.5,"kind":"run","cmd":"kubectl -n kube-system get svc","out":"NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE\nkube-dns ClusterIP 10.96.0.10 53/UDP,53/TCP,9153/TCP 12h","more":0},{"t":34.5,"kind":"run","cmd":"kubectl -n kube-system describe deploy kube-dns","out":"Error from server (NotFound): deployments.apps \"kube-dns\" not found","more":0},{"t":36.1,"kind":"run","cmd":"kubectl -n kube-system get deploy","out":"NAME READY UP-TO-DATE AVAILABLE AGE\ncoredns 0/0 0 0 12h","more":0},{"t":37.9,"kind":"run","cmd":"kubectl -n kube-system get pods | grep coredns","out":"(no output)","more":0},{"t":38.9,"kind":"run","cmd":"kubectl -n kube-system describe deploy coredns","out":"Name: coredns\nNamespace: kube-system\nCreationTimestamp: Tue, 03 Nov 2026 03:32:01 +0000\nLabels: k8s-app=kube-dns\nAnnotations: deployment.kubernetes.io/revision: 5\nSelector: k8s-app=kube-dns\nReplicas: 0 desired | 0 updated | 0 total | 0 available | 0 unavailable\nStrategyType: RollingUpdate\nMinReadySeconds: 0\nRollingUpdateStrategy: 1 max unavailable, 25% max surge\nPod Template:\n Labels: k8s-app=kube-dns\n Annotations: kubectl.kubernetes.io/restartedAt: 2026-11-03T15:03:24Z\n Service Account: coredns\n Containers:\n coredns:\n Image: registry.k8s.io/coredns/coredns:v1.14.6\n Ports: 53/UDP (dns), 53/TCP (dns-tcp), 9153/TCP (metrics), 8080/TCP (liveness-probe), 8181/TCP (readiness-probe)\n Host Ports: 0/UDP (dns), 0/TCP (dns-tcp), 0/TCP (metrics), 0/TCP (liveness-probe), 0/TCP (readiness-probe)\n Args:\n -conf\n /etc/coredns/Corefile\n Limits:\n memory: 170Mi\n Requests:\n cpu: 100m\n memory: 70Mi\n Liveness: http-get http://:liveness-probe/health delay=60s timeout=5s period=10s successThreshold=1 failureThreshold=5\n Readiness: http-get http://:readiness-probe/ready delay=0s timeout=1s period=10s successThreshold=1 failureThreshold=3\n Environment: \n Mounts:\n /etc/coredns from config-volume (ro)\n Volumes:\n config-volume:\n Type: ConfigMap (a volume populated by a ConfigMap)\n Name: coredns\n Optional: false\n Priority Class Name: system-cluster-critical\n Node-Selectors: kubernetes.io/os=linux\n Tolerations: CriticalAddonsOnly op=Exists","more":22},{"t":40.4,"kind":"run","cmd":"kubectl -n kube-system scale deploy coredns --replicas=1","out":"deployment.apps/coredns scaled","more":0},{"t":41.4,"kind":"run","cmd":"kubectl -n kube-system get pods | grep coredns","out":"coredns-8b8844767-mckxc 1/1 Running 0 0s","more":0},{"t":42.7,"kind":"run","cmd":"kubectl -n kube-system describe deploy coredns","out":"Name: coredns\nNamespace: kube-system\nCreationTimestamp: Tue, 03 Nov 2026 03:32:01 +0000\nLabels: k8s-app=kube-dns\nAnnotations: deployment.kubernetes.io/revision: 5\nSelector: k8s-app=kube-dns\nReplicas: 1 desired | 1 updated | 1 total | 1 available | 0 unavailable\nStrategyType: RollingUpdate\nMinReadySeconds: 0\nRollingUpdateStrategy: 1 max unavailable, 25% max surge\nPod Template:\n Labels: k8s-app=kube-dns\n Annotations: kubectl.kubernetes.io/restartedAt: 2026-11-03T15:03:24Z\n Service Account: coredns\n Containers:\n coredns:\n Image: registry.k8s.io/coredns/coredns:v1.14.6\n Ports: 53/UDP (dns), 53/TCP (dns-tcp), 9153/TCP (metrics), 8080/TCP (liveness-probe), 8181/TCP (readiness-probe)\n Host Ports: 0/UDP (dns), 0/TCP (dns-tcp), 0/TCP (metrics), 0/TCP (liveness-probe), 0/TCP (readiness-probe)\n Args:\n -conf\n /etc/coredns/Corefile\n Limits:\n memory: 170Mi\n Requests:\n cpu: 100m\n memory: 70Mi\n Liveness: http-get http://:liveness-probe/health delay=60s timeout=5s period=10s successThreshold=1 failureThreshold=5\n Readiness: http-get http://:readiness-probe/ready delay=0s timeout=1s period=10s successThreshold=1 failureThreshold=3\n Environment: \n Mounts:\n /etc/coredns from config-volume (ro)\n Volumes:\n config-volume:\n Type: ConfigMap (a volume populated by a ConfigMap)\n Name: coredns\n Optional: false\n Priority Class Name: system-cluster-critical\n Node-Selectors: kubernetes.io/os=linux\n Tolerations: CriticalAddonsOnly op=Exists","more":23},{"t":54.2,"kind":"run","cmd":"kubectl -n shop get svc","out":"NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE\napi ClusterIP 10.96.52.187 8080/TCP 2m12s\ndb ClusterIP 10.96.69.220 5432/TCP 2m12s\nweb ClusterIP 10.96.108.47 80/TCP 2m12s","more":0},{"t":56.2,"kind":"run","cmd":"kubectl -n shop logs web-86cc98785b-2wmb7 --tail=50","out":"2026/11/03 16:12:57 [notice] 1#1: start worker process 28\n2026/11/03 16:12:57 [notice] 1#1: start worker process 29\n2026/11/03 16:12:57 [notice] 1#1: start worker process 30\n2026/11/03 16:12:57 [notice] 1#1: start worker process 31\n2026/11/03 16:12:57 [notice] 1#1: start worker process 32\n2026/11/03 16:12:57 [notice] 1#1: start worker process 33\n2026/11/03 16:12:57 [notice] 1#1: start worker process 34\n2026/11/03 16:12:57 [notice] 1#1: start worker process 35\n10.244.0.1 - - [03/Nov/2026:16:12:58 +0000] \"GET /healthz HTTP/1.1\" 502 157 \"-\" \"kube-probe/1.37\" \"-\"\n2026/11/03 16:12:58 [error] 29#29: *1 connect() failed (111: Connection refused) while connecting to upstream, client: 10.244.0.1, server: , request: \"GET /healthz HTTP/1.1\", upstream: \"http://10.96.52.187:8080/healthz\", host: \"10.244.0.239:80\"\n10.244.0.1 - - [03/Nov/2026:16:13:03 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.240 - - [03/Nov/2026:16:13:06 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.1 - - [03/Nov/2026:16:13:08 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.240 - - [03/Nov/2026:16:13:08 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.240 - - [03/Nov/2026:16:13:09 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.240 - - [03/Nov/2026:16:13:10 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.240 - - [03/Nov/2026:16:13:11 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.240 - - [03/Nov/2026:16:13:12 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.240 - - [03/Nov/2026:16:13:12 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.1 - - [03/Nov/2026:16:13:13 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.240 - - [03/Nov/2026:16:13:14 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.240 - - [03/Nov/2026:16:13:16 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.1 - - [03/Nov/2026:16:13:18 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.240 - - [03/Nov/2026:16:13:18 +0000] \"GET /orders HTTP/1.1\" 200 36 \"-\" \"curl/8.17.0\" \"-\"\n10.244.0.1 - - [03/Nov/2026:16:13:23 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.1 - - [03/Nov/2026:16:13:28 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.1 - - [03/Nov/2026:16:13:33 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.1 - - [03/Nov/2026:16:13:38 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.1 - - [03/Nov/2026:16:13:43 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.1 - - [03/Nov/2026:16:13:48 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.1 - - [03/Nov/2026:16:13:53 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.1 - - [03/Nov/2026:16:13:58 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.1 - - [03/Nov/2026:16:14:03 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.1 - - [03/Nov/2026:16:14:08 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.1 - - [03/Nov/2026:16:14:13 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.1 - - [03/Nov/2026:16:14:18 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.1 - - [03/Nov/2026:16:14:23 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.1 - - [03/Nov/2026:16:14:28 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.1 - - [03/Nov/2026:16:14:33 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"\n10.244.0.1 - - [03/Nov/2026:16:14:38 +0000] \"GET /healthz HTTP/1.1\" 200 12 \"-\" \"kube-probe/1.37\" \"-\"","more":10},{"t":60.3,"kind":"run","cmd":"kubectl -n shop logs synthetic-5cc5f987df-qxh9z --tail=50","out":"2026-11-03T16:12:58Z GET /orders 000\n2026-11-03T16:13:00Z GET /orders 000\n2026-11-03T16:13:02Z GET /orders 000\n2026-11-03T16:13:04Z GET /orders 200\n2026-11-03T16:13:06Z GET /orders 200\n2026-11-03T16:13:08Z GET /orders 200\n2026-11-03T16:13:10Z GET /orders 200\n2026-11-03T16:13:12Z GET /orders 200\n2026-11-03T16:13:14Z GET /orders 200\n2026-11-03T16:13:16Z GET /orders 200\n2026-11-03T16:13:18Z GET /orders 200\n2026-11-03T16:13:24Z GET /orders 000\n2026-11-03T16:13:30Z GET /orders 000\n2026-11-03T16:13:36Z GET /orders 000\n2026-11-03T16:13:42Z GET /orders 000\n2026-11-03T16:13:48Z GET /orders 000\n2026-11-03T16:13:54Z GET /orders 000\n2026-11-03T16:14:00Z GET /orders 000\n2026-11-03T16:14:06Z GET /orders 000\n2026-11-03T16:14:12Z GET /orders 000\n2026-11-03T16:14:18Z GET /orders 000\n2026-11-03T16:14:24Z GET /orders 000\n2026-11-03T16:14:30Z GET /orders 000\n2026-11-03T16:14:36Z GET /orders 000\n2026-11-03T16:14:42Z GET /orders 000\n2026-11-03T16:14:48Z GET /orders 000\n2026-11-03T16:14:54Z GET /orders 000\n2026-11-03T16:14:56Z GET /orders 200\n2026-11-03T16:14:58Z GET /orders 200\n2026-11-03T16:15:00Z GET /orders 200\n2026-11-03T16:15:02Z GET /orders 200\n2026-11-03T16:15:04Z GET /orders 200\n2026-11-03T16:15:06Z GET /orders 200\n2026-11-03T16:15:08Z GET /orders 200\n2026-11-03T16:15:10Z GET /orders 200\n2026-11-03T16:15:12Z GET /orders 200\n2026-11-03T16:15:14Z GET /orders 200","more":0},{"t":68.1,"kind":"run","cmd":"kubectl -n kube-system get svc kube-dns -o yaml","out":"apiVersion: v1\nkind: Service\nmetadata:\n annotations:\n prometheus.io/port: \"9153\"\n prometheus.io/scrape: \"true\"\n creationTimestamp: \"2026-11-03T03:32:01Z\"\n labels:\n k8s-app: kube-dns\n kubernetes.io/cluster-service: \"true\"\n kubernetes.io/name: CoreDNS\n name: kube-dns\n namespace: kube-system\n resourceVersion: \"253\"\n uid: 3e58522f-5736-4b68-8c75-0161d68bb8d1\nspec:\n clusterIP: 10.96.0.10\n clusterIPs:\n - 10.96.0.10\n internalTrafficPolicy: Cluster\n ipFamilies:\n - IPv4\n ipFamilyPolicy: SingleStack\n ports:\n - name: dns\n port: 53\n protocol: UDP\n targetPort: 53\n - name: dns-tcp\n port: 53\n protocol: TCP\n targetPort: 53\n - name: metrics\n port: 9153\n protocol: TCP\n targetPort: 9153\n selector:\n k8s-app: kube-dns\n sessionAffinity: None\n type: ClusterIP","more":2},{"t":69.5,"kind":"run","cmd":"kubectl -n kube-system get configmap coredns -o yaml","out":"apiVersion: v1\ndata:\n Corefile: |\n .:53 {\n errors\n health {\n lameduck 5s\n }\n ready\n kubernetes cluster.local in-addr.arpa ip6.arpa {\n pods insecure\n fallthrough in-addr.arpa ip6.arpa\n ttl 30\n }\n prometheus :9153\n forward . /etc/resolv.conf {\n max_concurrent 1000\n }\n cache 30 {\n disable success cluster.local\n disable denial cluster.local\n }\n loop\n reload\n loadbalance\n }\nkind: ConfigMap\nmetadata:\n annotations:\n kubectl.kubernetes.io/last-applied-configuration: |\n {\"apiVersion\":\"v1\",\"data\":{\"Corefile\":\".:53 {\\n errors\\n health {\\n lameduck 5s\\n }\\n ready\\n kubernetes cluster.local in-addr.arpa ip6.arpa {\\n pods insecure\\n fallthrough in-addr.arpa ip6.arpa\\n ttl 30\\n }\\n prometheus :9153\\n forward . /etc/resolv.conf {\\n max_concurrent 1000\\n }\\n cache 30 {\\n disable success cluster.local\\n disable denial cluster.local\\n }\\n loop\\n reload\\n loadbalance\\n}\\n\"},\"kind\":\"ConfigMap\",\"metadata\":{\"annotations\":{},\"name\":\"coredns\",\"namespace\":\"kube-system\"}}\n creationTimestamp: \"2026-11-03T03:32:01Z\"\n name: coredns\n namespace: kube-system\n resourceVersion: \"119220\"\n uid: 70b431a2-e475-44f3-8262-1cb4d81ae6ba","more":0},{"t":71.8,"kind":"run","cmd":"kubectl -n shop exec synthetic-5cc5f987df-qxh9z -- nslookup web","out":"Server:\t\t10.96.0.10\nAddress:\t10.96.0.10:53\n\n** server can't find web.cluster.local: NXDOMAIN\n\nName:\tweb.shop.svc.cluster.local\nAddress: 10.96.108.47\n\n** server can't find web.svc.cluster.local: NXDOMAIN\n\n\n** server can't find web.svc.cluster.local: NXDOMAIN\n\n** server can't find web.cluster.local: NXDOMAIN\n\ncommand terminated with exit code 1","more":0},{"t":74.7,"kind":"run","cmd":"kubectl -n shop exec synthetic-5cc5f987df-qxh9z -- cat /etc/resolv.conf","out":"search shop.svc.cluster.local svc.cluster.local cluster.local\nnameserver 10.96.0.10\noptions ndots:5","more":0},{"t":81.2,"kind":"run","cmd":"kubectl -n shop exec synthetic-5cc5f987df-qxh9z -- curl -v http://web/orders","out":" % Total % Received % Xferd Average Speed Time Time Time Current\n Dload Upload Total Spent Left Speed\n\r 0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0* Host web:80 was resolved.\n* IPv6: (none)\n* IPv4: 10.96.108.47\n* Trying 10.96.108.47:80...\n* Established connection to web (10.96.108.47 port 80) from 10.244.0.240 port 53750 \n* using HTTP/1.x\n> GET /orders HTTP/1.1\r\n> Host: web\r\n> User-Agent: curl/8.17.0\r\n> Accept: */*\r\n> \r\n* Request completely sent off\n{\"orders\": [{\"id\": 1, \"total\": 42}]}< HTTP/1.1 200 OK\r\n< Server: nginx/1.29.8\r\n< Date: Tue, 03 Nov 2026 16:15:35 GMT\r\n< Content-Type: application/json\r\n< Content-Length: 36\r\n< Connection: keep-alive\r\n< \r\n{ [36 bytes data]\n\r100 36 100 36 0 0 21101 0 --:--:-- --:--:-- --:--:-- 36000\n* Connection #0 to host web:80 left intact","more":0},{"t":83.8,"kind":"run","cmd":"kubectl -n shop get pods web -o wide","out":"Error from server (NotFound): pods \"web\" not found","more":0},{"t":84.8,"kind":"run","cmd":"kubectl -n shop get pods | grep web","out":"web-86cc98785b-2wmb7 1/1 Running 0 2m43s\nweb-86cc98785b-8rxb9 1/1 Running 0 2m43s","more":0},{"t":86.0,"kind":"run","cmd":"kubectl -n shop get events --field-selector reason=Failed --watch=false | tail -20","out":"No resources found in shop namespace.","more":0},{"t":87.0,"kind":"run","cmd":"kubectl -n shop get events --watch=false | tail -20","out":"2m44s Normal Pulled pod/web-86cc98785b-2wmb7 Container image \"nginx:1.29-alpine\" already present on machine and can be accessed by the pod\n2m44s Normal Created pod/web-86cc98785b-2wmb7 Container created\n2m44s Normal Started pod/web-86cc98785b-2wmb7 Container started\n2m44s Warning Unhealthy pod/web-86cc98785b-2wmb7 Readiness probe failed: Get \"http://10.244.0.239:80/healthz\": dial tcp 10.244.0.239:80: connect: connection refused\n2m43s Warning Unhealthy pod/web-86cc98785b-2wmb7 Readiness probe failed: HTTP probe failed with statuscode: 502\n2m45s Normal Scheduled pod/web-86cc98785b-8rxb9 Successfully assigned shop/web-86cc98785b-8rxb9 to oncall-lab-control-plane\n2m44s Normal Pulled pod/web-86cc98785b-8rxb9 Container image \"nginx:1.29-alpine\" already present on machine and can be accessed by the pod\n2m44s Normal Created pod/web-86cc98785b-8rxb9 Container created\n2m44s Normal Started pod/web-86cc98785b-8rxb9 Container started\n2m44s Warning Unhealthy pod/web-86cc98785b-8rxb9 Readiness probe failed: Get \"http://10.244.0.238:80/healthz\": dial tcp 10.244.0.238:80: connect: connection refused\n2m43s Warning Unhealthy pod/web-86cc98785b-8rxb9 Readiness probe failed: HTTP probe failed with statuscode: 502\n2m45s Normal SuccessfulCreate replicaset/web-86cc98785b Created pod: web-86cc98785b-8rxb9\n2m45s Normal SuccessfulCreate replicaset/web-86cc98785b Created pod: web-86cc98785b-2wmb7\n2m45s Normal ScalingReplicaSet deployment/web Scaled up replica set web-86cc98785b from 0 to 2\n2m45s Normal Scheduled pod/worker-85767c58ff-bbpjn Successfully assigned shop/worker-85767c58ff-bbpjn to oncall-lab-control-plane\n2m44s Normal Pulled pod/worker-85767c58ff-bbpjn Container image \"python:3.13-alpine\" already present on machine and can be accessed by the pod\n2m44s Normal Created pod/worker-85767c58ff-bbpjn Container created\n2m44s Normal Started pod/worker-85767c58ff-bbpjn Container started\n2m45s Normal SuccessfulCreate replicaset/worker-85767c58ff Created pod: worker-85767c58ff-bbpjn\n2m45s Normal ScalingReplicaSet deployment/worker Scaled up replica set worker-85767c58ff from 0 to 1","more":0},{"t":93.0,"kind":"run","cmd":"kubectl -n shop describe pod web-86cc98785b-2wmb7","out":"Name: web-86cc98785b-2wmb7\nNamespace: shop\nPriority: 0\nService Account: default\nNode: oncall-lab-control-plane/172.22.0.2\nStart Time: Tue, 03 Nov 2026 16:12:56 +0000\nLabels: app=web\n pod-template-hash=86cc98785b\nAnnotations: \nStatus: Running\nIP: 10.244.0.239\nIPs:\n IP: 10.244.0.239\nControlled By: ReplicaSet/web-86cc98785b\nContainers:\n nginx:\n Container ID: containerd://5e778d3e3755973ea816391366d42754f4927bf2036dda0f1161017364eea3b4\n Image: nginx:1.29-alpine\n Image ID: docker.io/library/nginx@sha256:5616878291a2eed594aee8db4dade5878cf7edcb475e59193904b198d9b830de\n Port: 80/TCP\n Host Port: 0/TCP\n State: Running\n Started: Tue, 03 Nov 2026 16:12:57 +0000\n Ready: True\n Restart Count: 0\n Readiness: http-get http://:80/healthz delay=0s timeout=1s period=5s successThreshold=1 failureThreshold=3\n Environment: \n Mounts:\n /etc/nginx/conf.d from conf (rw)\n /var/run/secrets/kubernetes.io/serviceaccount from kube-api-access-58gxb (ro)\nConditions:\n Type Status\n PodReadyToStartContainers True \n Initialized True \n Ready True \n ContainersReady True \n PodScheduled True \nVolumes:\n conf:\n Type: ConfigMap (a volume populated by a ConfigMap)","more":21},{"t":101.2,"kind":"run","cmd":"kubectl -n shop exec web-86cc98785b-2wmb7 -- curl http://localhost:80/healthz","out":" % Total % Received % Xferd Average Speed Time Time Time Current\n Dload Upload Total Spent Left Speed\n\r 0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0\r100 12 100 12 0 0 12618 0 --:--:-- --:--:-- --:--:-- 12000\n{\"ok\": true}","more":0},{"t":103.2,"kind":"run","cmd":"kubectl -n shop exec web-86cc98785b-2wmb7 -- nginx -T","out":"nginx: the configuration file /etc/nginx/nginx.conf syntax is ok\nnginx: configuration file /etc/nginx/nginx.conf test is successful\n# configuration file /etc/nginx/nginx.conf:\n\nuser nginx;\nworker_processes auto;\n\nerror_log /var/log/nginx/error.log notice;\npid /run/nginx.pid;\n\n\nevents {\n worker_connections 1024;\n}\n\n\nhttp {\n include /etc/nginx/mime.types;\n default_type application/octet-stream;\n\n log_format main '$remote_addr - $remote_user [$time_local] \"$request\" '\n '$status $body_bytes_sent \"$http_referer\" '\n '\"$http_user_agent\" \"$http_x_forwarded_for\"';\n\n access_log /var/log/nginx/access.log main;\n\n sendfile on;\n #tcp_nopush on;\n\n keepalive_timeout 65;\n\n #gzip on;\n\n include /etc/nginx/conf.d/*.conf;\n}\n\n# configuration file /etc/nginx/mime.types:\n\ntypes {\n text/html html htm shtml;","more":102},{"t":109.3,"kind":"run","cmd":"kubectl -n shop exec web-86cc98785b-2wmb7 -- ping -c 3 10.244.0.239","out":"PING 10.244.0.239 (10.244.0.239): 56 data bytes\n64 bytes from 10.244.0.239: seq=0 ttl=64 time=0.033 ms\n64 bytes from 10.244.0.239: seq=1 ttl=64 time=0.161 ms\n64 bytes from 10.244.0.239: seq=2 ttl=64 time=0.140 ms\n\n--- 10.244.0.239 ping statistics ---\n3 packets transmitted, 3 packets received, 0% packet loss\nround-trip min/avg/max = 0.033/0.111/0.161 ms","more":0},{"t":114.4,"kind":"run","cmd":"kubectl -n shop describe deploy web | grep -A 10 \"Readiness:\"","out":" Readiness: http-get http://:80/healthz delay=0s timeout=1s period=5s successThreshold=1 failureThreshold=3\n Environment: \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: \n Tolerations: ","more":0},{"t":119.7,"kind":"run","cmd":"kubectl -n shop get pod web-86cc98785b-2wmb7 --template=\"{{.status.conditions}}\"","out":"[map[lastProbeTime: lastTransitionTime:2026-11-03T16:12:57Z observedGeneration:1 status:True type:PodReadyToStartContainers] map[lastProbeTime: lastTransitionTime:2026-11-03T16:12:56Z observedGeneration:1 status:True type:Initialized] map[lastProbeTime: lastTransitionTime:2026-11-03T16:13:03Z observedGeneration:1 status:True type:Ready] map[lastProbeTime: lastTransitionTime:2026-11-03T16:13:03Z observedGeneration:1 status:True type:ContainersReady] map[lastProbeTime: lastTransitionTime:2026-11-03T16:12:56Z observedGeneration:1 status:True type:PodScheduled]]","more":0},{"t":127.9,"kind":"run","cmd":"kubectl -n shop exec synthetic-5cc5f987df-qxh9z -- nslookup web.shop","out":"Server:\t\t10.96.0.10\nAddress:\t10.96.0.10:53\n\nNon-authoritative answer:\n\n** server can't find web.shop: NXDOMAIN\n\ncommand terminated with exit code 1","more":0},{"t":138.2,"kind":"run","cmd":"kubectl -n shop exec synthetic-5cc5f987df-qxh9z -- nslookup web.shop.svc.cluster.local","out":"Server:\t\t10.96.0.10\nAddress:\t10.96.0.10:53\n\n\nName:\tweb.shop.svc.cluster.local\nAddress: 10.96.108.47","more":0},{"t":141.2,"kind":"run","cmd":"kubectl -n kube-system logs coredns-8b8844767-mckxc --tail=50","out":"maxprocs: Leaving GOMAXPROCS=8: CPU quota undefined\n.:53\n[INFO] plugin/reload: Running configuration SHA512 = 1b226df79860026c6a52e67daa10d7f0d57ec5b023288ec00c5e05f93523c894564e15b91770d3a07ae1cfbe861d15b37d4a0027e69c546ab112970993a3b03b\nCoreDNS-1.14.6\nlinux/arm64, go1.26.5, 424d125","more":0},{"t":266.7,"kind":"run","cmd":"kubectl -n kube-system edit deploy coredns","out":"Vim: Warning: Output is not to a terminal\nVim: Warning: Input is not from a terminal\n\u001b[?1049h\u001b[>4;2m\u001b[?1h\u001b=\u001b[?2004h\u001b[?1004h\u001b[1;24r\u001b[?12h\u001b[?12l\u001b[22;2t\u001b[22;1t\u001b[27m\u001b[23m\u001b[29m\u001b[m\u001b[H\u001b[2J\u001b[?2004l\u001b[>4;m\u001b[?2004h\u001b[>4;2m\u001b[?25l\u001b[24;1H\"/tmp/kubectl-edit-918729883.yaml\" 150L, 4160B\u001b]11;?\u0007\u001b]10;?\u0007\u001b[1;1H# Please edit the object below. Lines beginning with a '#' will be ignored,\r\n# and an empty file will abort the edit. If an error occurs while saving this fii\u001b[3;1Hle will be\r\n# reopened with the relevant failures.\r\n#\r\napiVersion: apps/v1\r\nkind: Deployment\r\nmetadata:\r\n annotations:\r\n deployment.kubernetes.io/revision: \"5\"\r\n creationTimestamp: \"2026-11-03T03:32:01Z\"\r\n generation: 29\r\n labels:\r\n k8s-app: kube-dns\r\n name: coredns\r\n namespace: kube-system\r\n resourceVersion: \"125760\"\r\n uid: ff1fd0b1-b6d0-432d-af35-70c4d881bcc3\r\nspec:\r\n progressDeadlineSeconds: 600\r\n replicas: 1\r\n revisionHistoryLimit: 10\r\n selector:\u001b[1;1H\u001b[?25h\u001b[?4m\u001b[24;1H\u001b[?1004l\u001b[?2004l\u001b[?1l\u001b>\u001b[?1049l\u001b[>4;mVim: Caught deadly signal TERM\r\nVim: Finished.\r\n\u001b[24;1H\u001b[23;2t\u001b[23;1t\r\n\n\nCommand exceeded timeout of 120000 ms. Retry with a larger timeout if the command is expected to take longer.","more":0},{"t":268.7,"kind":"run","cmd":"kubectl -n kube-system get deploy coredns -o yaml | grep -A 5 \"selector\"","out":" selector:\n matchLabels:\n k8s-app: kube-dns\n strategy:\n rollingUpdate:\n maxSurge: 25%","more":0},{"t":270.9,"kind":"run","cmd":"kubectl -n kube-system get deploy coredns -o yaml | grep -A 20 \"spec:\"","out":"spec:\n progressDeadlineSeconds: 600\n replicas: 1\n revisionHistoryLimit: 10\n selector:\n matchLabels:\n k8s-app: kube-dns\n strategy:\n rollingUpdate:\n maxSurge: 25%\n maxUnavailable: 1\n type: RollingUpdate\n template:\n metadata:\n annotations:\n kubectl.kubernetes.io/restartedAt: \"2026-11-03T15:03:24Z\"\n labels:\n k8s-app: kube-dns\n spec:\n affinity:\n podAntiAffinity:\n preferredDuringSchedulingIgnoredDuringExecution:\n - podAffinityTerm:\n labelSelector:\n matchExpressions:\n - key: k8s-app\n operator: In\n values:\n - kube-dns\n topologyKey: kubernetes.io/hostname\n weight: 100\n containers:\n - args:\n - -conf\n - /etc/coredns/Corefile\n image: registry.k8s.io/coredns/coredns:v1.14.6\n imagePullPolicy: IfNotPresent\n livenessProbe:\n failureThreshold: 5","more":0},{"t":272.8,"kind":"run","cmd":"kubectl -n kube-system get svc kube-dns -o yaml | grep -A 10 \"selector\"","out":" selector:\n k8s-app: kube-dns\n sessionAffinity: None\n type: ClusterIP\nstatus:\n loadBalancer: {}","more":0},{"t":275.8,"kind":"run","cmd":"kubectl -n kube-system get pod coredns-8b8844767-mckxc -o yaml | grep -A 10 \"labels:\"","out":" labels:\n k8s-app: kube-dns\n pod-template-hash: 8b8844767\n name: coredns-8b8844767-mckxc\n namespace: kube-system\n ownerReferences:\n - apiVersion: apps/v1\n blockOwnerDeletion: true\n controller: true\n kind: ReplicaSet\n name: coredns-8b8844767","more":0},{"t":277.2,"kind":"run","cmd":"kubectl -n kube-system get deploy coredns -o yaml | grep -A 5 \"volumes:\"","out":" volumes:\n - configMap:\n defaultMode: 420\n name: coredns\n name: config-volume\nstatus:","more":0},{"t":284.6,"kind":"run","cmd":"kubectl -n kube-system get pod coredns-8b8844767-mckxc -o wide","out":"NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES\ncoredns-8b8844767-mckxc 1/1 Running 0 4m4s 10.244.0.241 oncall-lab-control-plane ","more":0},{"t":290.8,"kind":"run","cmd":"kubectl -n shop get pod synthetic-5cc5f987df-qxh9z -o wide","out":"NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES\nsynthetic-5cc5f987df-qxh9z 1/1 Running 0 6m9s 10.244.0.240 oncall-lab-control-plane ","more":0}],"report":"Based on my investigation, I have identified and resolved the issue affecting the shop service. Here's my report:\n\n## IMPACT\nThe `ShopOrdersErrorRate` alert is firing with 100% failure rate, affecting all synthetic probes checking `http://web/orders` every 2 seconds. This indicates that customers are unable to access the `/orders` endpoint successfully. The issue has been ongoing since approximately 16:12:58 UTC.\n\n## ROOT CAUSE\n**Kubernetes object (kind/namespace/name): Deployment/shop/coredns**\nThe issue was caused by the CoreDNS DNS service in the `kube-system` namespace not running (0/0 replicas). This prevented DNS resolution for service names like `web`, causing the synthetic probes to fail with status code 000 (connection failures).\n\n## ACTIONS TAKEN\n1. Scaled the CoreDNS deployment in `kube-system` namespace from 0 to 1 replica:\n ```bash\n kubectl -n kube-system scale deploy coredns --replicas=1\n ```\n2. Verified CoreDNS was running:\n ```bash\n kubectl -n kube-system get deploy coredns\n kubectl -n kube-system get pods | grep coredns\n ```\n3. Confirmed DNS resolution was working:\n ```bash\n kubectl -n shop exec synthetic-5cc5f987df-qxh9z -- nslookup web.shop.svc.cluster.local\n ```\n\n## STATUS\n**RESOLVED** - The CoreDNS service is now running and DNS resolution is working. The shop service should be accessible again.\n\n## ESCALATION\n**NONE** - This issue was fully within the runbook's authority and was resolved with minimal changes. The fix was scaling the CoreDNS deployment, which is the smallest change that restores service functionality.\n\n## FOLLOW-UP\nTo prevent a repeat, I recommend:\n1. **Monitoring CoreDNS health**: Set up alerts for CoreDNS deployment readiness\n2. **Implement DNS health checks**: Add periodic health checks to ensure CoreDNS remains available\n3. **Review pod readiness timing**: Investigate why web pods initially failed readiness probes (race condition during pod startup)\n\nThe root cause was a cluster add-on (CoreDNS) not running, which was outside the shop namespace but directly impacted service accessibility. Scaling it was the most appropriate action according to the runbook's authority guidelines."}