ReadinessFlapping on c8-readiness-flap (hephaisto-chaos)

investigation

model

gpt-oss:120b

steps

13

tool calls

12

tokens

161.7k in / 3.6k out

cost

$0.0055

confidence

0.95

ended

Concluded

trace

1. 1 llm model turn internal 15.8s · 9.6k tok · $0.0003

   model output — its reasoning, and the tools it asked for

   -> calls list_datasources

2. 2 tool list_datasources grafana-mcp 0ms · 273 B

   arguments

   {"limit":100,"offset":0,"type":""}

   result digest — what the model actually saw

   [step 01a05efc-981d-798c-8669-465d1a2885f0] list_datasources
   log digest: 4 lines, 273 bytes
   
   -- last 4 lines --
   {
     "$type": "text",
     "text": "{\u0022datasources\u0022:[{\u0022id\u0022:1,\u0022uid\u0022:\u0022prometheus\u0022,\u0022name\u0022:\u0022Prometheus\u0022,\u0022type\u0022:\u0022prometheus\u0022,\u0022isDefault\u0022:true}],\u0022total\u0022:1,\u0022hasMore\u0022:false}"
   }
   

3. 3 llm model turn internal 16.4s · 9.8k tok · $0.0003

   model output — its reasoning, and the tools it asked for

   -> calls query_prometheus

4. 4 tool query_prometheus grafana-mcp 0ms · 174 B

   arguments

   {"datasourceUid":"prometheus","expr":"kube_pod_status_ready{namespace=\u0022hephaisto-chaos\u0022,condition=\u0022true\u0022}","queryType":"range","startTime":"now-30m","endTime":"now","stepSeconds":60}

   result digest — what the model actually saw

   [step 01a05efc-d815-7284-9597-732f4b56d73b] query_prometheus
   log digest: 1 lines, 174 bytes
   
   -- last 1 lines --
   No output for this call was recorded in cassette 'c8'. This scenario was captured from a different sequence of tool calls; treat it as unknown rather than as an empty result.
   

5. 5 llm model turn internal 2.0s · 9.9k tok · $0.0003

   model output — its reasoning, and the tools it asked for

   -> calls list_prometheus_metric_names

6. 6 tool list_prometheus_metric_names grafana-mcp 0ms · 174 B

   arguments

   {"datasourceUid":"prometheus","limit":100,"page":1,"regex":"kube_pod_status_ready"}

   result digest — what the model actually saw

   [step 01a05efc-e000-7925-a9d7-439a0c3d17d6] list_prometheus_metric_names
   log digest: 1 lines, 174 bytes
   
   -- last 1 lines --
   No output for this call was recorded in cassette 'c8'. This scenario was captured from a different sequence of tool calls; treat it as unknown rather than as an empty result.
   

7. 7 llm model turn internal 2.5s · 10.1k tok · $0.0003

   model output — its reasoning, and the tools it asked for

   -> calls get_service_endpoints

8. 8 tool get_service_endpoints kubernetes 0ms · 330 B

   arguments

   {"name":"c8-readiness-flap","namespace":"hephaisto-chaos"}

   result digest — what the model actually saw

   [step 01a05efc-e9c8-7896-b730-f50d867f55bc] get_service_endpoints
   log digest: 8 lines, 330 bytes
   
   -- last 8 lines --
   service hephaisto-chaos/c8-readiness-flap (type ClusterIP, clusterIP 0.0.0.0)
   selector: app.kubernetes.io/name=c8-readiness-flap
   ports: http:80->http
   
   1 ready endpoint(s), 0 not ready
   address     state  target
   ----------  -----  -------------------------------------
   0.0.0.0  ready  Pod/c8-readiness-flap-dd589d77c-6mxdb
   

9. 9 llm model turn internal 2.2s · 10.2k tok · $0.0003

   model output — its reasoning, and the tools it asked for

   -> calls describe_pod

10. 10 tool describe_pod kubernetes 0ms · 5.7 KiB ~ truncated

    arguments

    {"name":"c8-readiness-flap-dd589d77c-6mxdb","namespace":"hephaisto-chaos"}

    result digest — what the model actually saw

    [step 01a05efc-f282-7902-8491-835bbdc5ecc3] describe_pod
    log digest: 193 lines, 5876 bytes
    
    -- repeated patterns --
    x7 [#67 .. #180]         cpu: 100m
    x6 [#123 .. #172]     observedGeneration: 1
    x5 [#71 .. #183]         memory: 16Mi
    x5 [#124 .. #140]     status: "True"
    x3 [#65 .. #178]     resources:
    x3 [#66 .. #179]       limits:
    x3 [#68 .. #181]         memory: 64Mi
    x3 [#69 .. #182]       requests:
    x3 [#122 .. #138]   - lastTransitionTime: "2026-08-29T13:50:12Z"
    x2 [#1 .. #114] apiVersion: v1
    
    -- notable lines --
            rm -f /www/healthz
            sleep 60
          done
          echo "FATAL: httpd exited unexpectedly"
          exit 1
        command:
        - /bin/sh
          initialDelaySeconds: 3
          periodSeconds: 5
          successThreshold: 1
          timeoutSeconds: 2
        resources:
          limits:
            cpu: 100m
    
    -- last 40 lines --
            cpu: 100m
            memory: 64Mi
          requests:
            cpu: 10m
            memory: 16Mi
        restartCount: 0
        started: true
        state:
          running:
            startedAt: "2026-08-29T13:50:12Z"
        volumeMounts:
        - mountPath: /var/run/secrets/kubernetes.io/serviceaccount
          name: kube-api-access-wchp5
          readOnly: true
          recursiveReadOnly: Disabled
      hostIP: 0.0.0.0
      hostIPs:
      - ip: 0.0.0.0
      observedGeneration: 1
      phase: Running
      podIP: 0.0.0.0
      podIPs:
      - ip: 0.0.0.0
      qosClass: Burstable
      resources:
        limits:
          cpu: 100m
          memory: 64Mi
        requests:
          memory: 16Mi
      startTime: "2026-08-29T13:50:12Z"
    
    events for this pod:
    type     reason     count  objects                                first  last  message
    -------  ---------  -----  -------------------------------------  -----  ----  -----------------------------------------------------------------------------------------------
    Warning  Unhealthy  25     Pod/c8-readiness-flap-dd589d77c-6mxdb  2m     2m    Readiness probe failed: HTTP probe failed with statuscode: 404
    Normal   Started    1      Pod/c8-readiness-flap-dd589d77c-6mxdb  6m     6m    Container started
    Normal   Scheduled  1      Pod/c8-readiness-flap-dd589d77c-6mxdb  6m     6m    Successfully assigned hephaisto-chaos/c8-readiness-flap-dd589d77c-6mxdb to lima-rancher-desktop
    Normal   Pulled     1      Pod/c8-readiness-flap-dd589d77c-6mxdb  6m     6m    Container image "busybox:1.37" already present on machine and can be accessed by the pod
    Normal   Created    1      Pod/c8-readiness-flap-dd589d77c-6mxdb  6m     6m    Container created
    
    [truncated: 132 of 193 lines omitted]
    

    raw result — the untruncated tool output (5.7 KiB)

    apiVersion: v1
    kind: Pod
    metadata:
      creationTimestamp: "2026-08-29T13:50:12Z"
      generateName: c8-readiness-flap-dd589d77c-
      generation: 1
      labels:
        app.kubernetes.io/name: c8-readiness-flap
        hephaisto.chaos/fault: readiness-flap
        hephaisto.chaos/scenario: c8
        pod-template-hash: dd589d77c
      name: c8-readiness-flap-dd589d77c-6mxdb
      namespace: hephaisto-chaos
      ownerReferences:
      - apiVersion: apps/v1
        kind: ReplicaSet
        blockOwnerDeletion: true
        controller: true
        name: c8-readiness-flap-dd589d77c
        uid: f270af4e-1d00-40c9-8937-5dfff4b8712f
      uid: 28f6e690-cbd1-49f8-a60c-ab460ae2790e
    spec:
      containers:
      - args:
        - |
          mkdir -p /www
          echo "c8-readiness-flap" > /www/index.html
          echo "ok" > /www/healthz
          # busybox httpd: static docroot, foreground, backgrounded here so
          # the flip loop can run in the same container without a sidecar.
          httpd -f -p 8080 -h /www &
          HTTPD_PID=$!
          # Give the probe a chance to see Ready at least once before the
          # first unhealthy window (initialDelaySeconds covers this too).
          while kill -0 "$HTTPD_PID" 2>/dev/null; do
            echo "INFO: healthy window open, /healthz -> 200"
            echo "ok" > /www/healthz
            sleep 60
            echo "WARN: entering unhealthy window, /healthz -> 404 (readiness will fail)"
            rm -f /www/healthz
            sleep 60
          done
          echo "FATAL: httpd exited unexpectedly"
          exit 1
        command:
        - /bin/sh
        - -c
        image: busybox:1.37
        imagePullPolicy: IfNotPresent
        name: server
        ports:
        - containerPort: 8080
          name: http
          protocol: TCP
        readinessProbe:
          failureThreshold: 2
          httpGet:
            path: /healthz
            port: http
            scheme: HTTP
          initialDelaySeconds: 3
          periodSeconds: 5
          successThreshold: 1
          timeoutSeconds: 2
        resources:
          limits:
            cpu: 100m
            memory: 64Mi
          requests:
            cpu: 10m
            memory: 16Mi
        terminationMessagePath: /dev/termination-log
        terminationMessagePolicy: File
        volumeMounts:
        - mountPath: /var/run/secrets/kubernetes.io/serviceaccount
          name: kube-api-access-wchp5
          readOnly: true
      dnsPolicy: ClusterFirst
      enableServiceLinks: true
      nodeName: lima-rancher-desktop
      preemptionPolicy: PreemptLowerPriority
      priority: 0
      restartPolicy: Always
      schedulerName: default-scheduler
      securityContext: {}
      serviceAccount: default
      serviceAccountName: default
      terminationGracePeriodSeconds: 5
      tolerations:
      - effect: NoExecute
        key: node.kubernetes.io/not-ready
        operator: Exists
        tolerationSeconds: 300
      - effect: NoExecute
        key: node.kubernetes.io/unreachable
        operator: Exists
        tolerationSeconds: 300
      volumes:
      - name: kube-api-access-wchp5
        projected:
          defaultMode: 420
          sources:
          - serviceAccountToken:
              expirationSeconds: 3607
              path: token
          - configMap:
              items:
              - key: ca.crt
                path: ca.crt
              name: kube-root-ca.crt
          - downwardAPI:
              items:
              - fieldRef:
                  apiVersion: v1
                  fieldPath: metadata.namespace
                path: namespace
    status:
      allocatedResources:
        cpu: 10m
        memory: 16Mi
      conditions:
      - lastTransitionTime: "2026-08-29T13:50:12Z"
        observedGeneration: 1
        status: "True"
        type: PodReadyToStartContainers
      - lastTransitionTime: "2026-08-29T13:50:12Z"
        observedGeneration: 1
        status: "True"
        type: Initialized
      - lastTransitionTime: "2026-08-29T13:56:13Z"
        observedGeneration: 1
        status: "True"
        type: Ready
      - lastTransitionTime: "2026-08-29T13:56:13Z"
        observedGeneration: 1
        status: "True"
        type: ContainersReady
      - lastTransitionTime: "2026-08-29T13:50:12Z"
        observedGeneration: 1
        status: "True"
        type: PodScheduled
      containerStatuses:
      - allocatedResources:
          cpu: 10m
          memory: 16Mi
        containerID: docker://b82f330e2d7c9beae99455d8591f68f2f2d93bc051596fa33c00c4ddf969c89d
        image: busybox:1.37
        imageID: docker-pullable://busybox@sha256:9db7b59979c38555a39def84a31fb98b5296952f9e3afd4f6f11f05b07adfab0
        lastState: {}
        name: server
        ready: true
        resources:
          limits:
            cpu: 100m
            memory: 64Mi
          requests:
            cpu: 10m
            memory: 16Mi
        restartCount: 0
        started: true
        state:
          running:
            startedAt: "2026-08-29T13:50:12Z"
        volumeMounts:
        - mountPath: /var/run/secrets/kubernetes.io/serviceaccount
          name: kube-api-access-wchp5
          readOnly: true
          recursiveReadOnly: Disabled
      hostIP: 0.0.0.0
      hostIPs:
      - ip: 0.0.0.0
      observedGeneration: 1
      phase: Running
      podIP: 0.0.0.0
      podIPs:
      - ip: 0.0.0.0
      qosClass: Burstable
      resources:
        limits:
          cpu: 100m
          memory: 64Mi
        requests:
          memory: 16Mi
      startTime: "2026-08-29T13:50:12Z"
    
    events for this pod:
    type     reason     count  objects                                first  last  message
    -------  ---------  -----  -------------------------------------  -----  ----  -----------------------------------------------------------------------------------------------
    Warning  Unhealthy  25     Pod/c8-readiness-flap-dd589d77c-6mxdb  2m     2m    Readiness probe failed: HTTP probe failed with statuscode: 404
    Normal   Started    1      Pod/c8-readiness-flap-dd589d77c-6mxdb  6m     6m    Container started
    Normal   Scheduled  1      Pod/c8-readiness-flap-dd589d77c-6mxdb  6m     6m    Successfully assigned hephaisto-chaos/c8-readiness-flap-dd589d77c-6mxdb to lima-rancher-desktop
    Normal   Pulled     1      Pod/c8-readiness-flap-dd589d77c-6mxdb  6m     6m    Container image "busybox:1.37" already present on machine and can be accessed by the pod
    Normal   Created    1      Pod/c8-readiness-flap-dd589d77c-6mxdb  6m     6m    Container created
    

11. 11 llm model turn internal 3.6s · 11.1k tok · $0.0004

    model output — its reasoning, and the tools it asked for

    -> calls describe_pod

12. 12 tool describe_pod kubernetes 0ms · 5.7 KiB ~ truncated

    arguments

    {"name":"c8-readiness-flap-dd589d77c-6mxdb","namespace":"hephaisto-chaos"}

    result digest — what the model actually saw

    [step 01a05efd-00a6-7f56-8c0e-37eacb9cd0e7] describe_pod
    log digest: 193 lines, 5876 bytes
    
    -- repeated patterns --
    x7 [#67 .. #180]         cpu: 100m
    x6 [#123 .. #172]     observedGeneration: 1
    x5 [#71 .. #183]         memory: 16Mi
    x5 [#124 .. #140]     status: "True"
    x3 [#65 .. #178]     resources:
    x3 [#66 .. #179]       limits:
    x3 [#68 .. #181]         memory: 64Mi
    x3 [#69 .. #182]       requests:
    x3 [#122 .. #138]   - lastTransitionTime: "2026-08-29T13:50:12Z"
    x2 [#1 .. #114] apiVersion: v1
    
    -- notable lines --
            rm -f /www/healthz
            sleep 60
          done
          echo "FATAL: httpd exited unexpectedly"
          exit 1
        command:
        - /bin/sh
          initialDelaySeconds: 3
          periodSeconds: 5
          successThreshold: 1
          timeoutSeconds: 2
        resources:
          limits:
            cpu: 100m
    
    -- last 40 lines --
            cpu: 100m
            memory: 64Mi
          requests:
            cpu: 10m
            memory: 16Mi
        restartCount: 0
        started: true
        state:
          running:
            startedAt: "2026-08-29T13:50:12Z"
        volumeMounts:
        - mountPath: /var/run/secrets/kubernetes.io/serviceaccount
          name: kube-api-access-wchp5
          readOnly: true
          recursiveReadOnly: Disabled
      hostIP: 0.0.0.0
      hostIPs:
      - ip: 0.0.0.0
      observedGeneration: 1
      phase: Running
      podIP: 0.0.0.0
      podIPs:
      - ip: 0.0.0.0
      qosClass: Burstable
      resources:
        limits:
          cpu: 100m
          memory: 64Mi
        requests:
          memory: 16Mi
      startTime: "2026-08-29T13:50:12Z"
    
    events for this pod:
    type     reason     count  objects                                first  last  message
    -------  ---------  -----  -------------------------------------  -----  ----  -----------------------------------------------------------------------------------------------
    Warning  Unhealthy  25     Pod/c8-readiness-flap-dd589d77c-6mxdb  2m     2m    Readiness probe failed: HTTP probe failed with statuscode: 404
    Normal   Started    1      Pod/c8-readiness-flap-dd589d77c-6mxdb  6m     6m    Container started
    Normal   Scheduled  1      Pod/c8-readiness-flap-dd589d77c-6mxdb  6m     6m    Successfully assigned hephaisto-chaos/c8-readiness-flap-dd589d77c-6mxdb to lima-rancher-desktop
    Normal   Pulled     1      Pod/c8-readiness-flap-dd589d77c-6mxdb  6m     6m    Container image "busybox:1.37" already present on machine and can be accessed by the pod
    Normal   Created    1      Pod/c8-readiness-flap-dd589d77c-6mxdb  6m     6m    Container created
    
    [truncated: 132 of 193 lines omitted]
    

    raw result — the untruncated tool output (5.7 KiB)

    apiVersion: v1
    kind: Pod
    metadata:
      creationTimestamp: "2026-08-29T13:50:12Z"
      generateName: c8-readiness-flap-dd589d77c-
      generation: 1
      labels:
        app.kubernetes.io/name: c8-readiness-flap
        hephaisto.chaos/fault: readiness-flap
        hephaisto.chaos/scenario: c8
        pod-template-hash: dd589d77c
      name: c8-readiness-flap-dd589d77c-6mxdb
      namespace: hephaisto-chaos
      ownerReferences:
      - apiVersion: apps/v1
        kind: ReplicaSet
        blockOwnerDeletion: true
        controller: true
        name: c8-readiness-flap-dd589d77c
        uid: f270af4e-1d00-40c9-8937-5dfff4b8712f
      uid: 28f6e690-cbd1-49f8-a60c-ab460ae2790e
    spec:
      containers:
      - args:
        - |
          mkdir -p /www
          echo "c8-readiness-flap" > /www/index.html
          echo "ok" > /www/healthz
          # busybox httpd: static docroot, foreground, backgrounded here so
          # the flip loop can run in the same container without a sidecar.
          httpd -f -p 8080 -h /www &
          HTTPD_PID=$!
          # Give the probe a chance to see Ready at least once before the
          # first unhealthy window (initialDelaySeconds covers this too).
          while kill -0 "$HTTPD_PID" 2>/dev/null; do
            echo "INFO: healthy window open, /healthz -> 200"
            echo "ok" > /www/healthz
            sleep 60
            echo "WARN: entering unhealthy window, /healthz -> 404 (readiness will fail)"
            rm -f /www/healthz
            sleep 60
          done
          echo "FATAL: httpd exited unexpectedly"
          exit 1
        command:
        - /bin/sh
        - -c
        image: busybox:1.37
        imagePullPolicy: IfNotPresent
        name: server
        ports:
        - containerPort: 8080
          name: http
          protocol: TCP
        readinessProbe:
          failureThreshold: 2
          httpGet:
            path: /healthz
            port: http
            scheme: HTTP
          initialDelaySeconds: 3
          periodSeconds: 5
          successThreshold: 1
          timeoutSeconds: 2
        resources:
          limits:
            cpu: 100m
            memory: 64Mi
          requests:
            cpu: 10m
            memory: 16Mi
        terminationMessagePath: /dev/termination-log
        terminationMessagePolicy: File
        volumeMounts:
        - mountPath: /var/run/secrets/kubernetes.io/serviceaccount
          name: kube-api-access-wchp5
          readOnly: true
      dnsPolicy: ClusterFirst
      enableServiceLinks: true
      nodeName: lima-rancher-desktop
      preemptionPolicy: PreemptLowerPriority
      priority: 0
      restartPolicy: Always
      schedulerName: default-scheduler
      securityContext: {}
      serviceAccount: default
      serviceAccountName: default
      terminationGracePeriodSeconds: 5
      tolerations:
      - effect: NoExecute
        key: node.kubernetes.io/not-ready
        operator: Exists
        tolerationSeconds: 300
      - effect: NoExecute
        key: node.kubernetes.io/unreachable
        operator: Exists
        tolerationSeconds: 300
      volumes:
      - name: kube-api-access-wchp5
        projected:
          defaultMode: 420
          sources:
          - serviceAccountToken:
              expirationSeconds: 3607
              path: token
          - configMap:
              items:
              - key: ca.crt
                path: ca.crt
              name: kube-root-ca.crt
          - downwardAPI:
              items:
              - fieldRef:
                  apiVersion: v1
                  fieldPath: metadata.namespace
                path: namespace
    status:
      allocatedResources:
        cpu: 10m
        memory: 16Mi
      conditions:
      - lastTransitionTime: "2026-08-29T13:50:12Z"
        observedGeneration: 1
        status: "True"
        type: PodReadyToStartContainers
      - lastTransitionTime: "2026-08-29T13:50:12Z"
        observedGeneration: 1
        status: "True"
        type: Initialized
      - lastTransitionTime: "2026-08-29T13:56:13Z"
        observedGeneration: 1
        status: "True"
        type: Ready
      - lastTransitionTime: "2026-08-29T13:56:13Z"
        observedGeneration: 1
        status: "True"
        type: ContainersReady
      - lastTransitionTime: "2026-08-29T13:50:12Z"
        observedGeneration: 1
        status: "True"
        type: PodScheduled
      containerStatuses:
      - allocatedResources:
          cpu: 10m
          memory: 16Mi
        containerID: docker://b82f330e2d7c9beae99455d8591f68f2f2d93bc051596fa33c00c4ddf969c89d
        image: busybox:1.37
        imageID: docker-pullable://busybox@sha256:9db7b59979c38555a39def84a31fb98b5296952f9e3afd4f6f11f05b07adfab0
        lastState: {}
        name: server
        ready: true
        resources:
          limits:
            cpu: 100m
            memory: 64Mi
          requests:
            cpu: 10m
            memory: 16Mi
        restartCount: 0
        started: true
        state:
          running:
            startedAt: "2026-08-29T13:50:12Z"
        volumeMounts:
        - mountPath: /var/run/secrets/kubernetes.io/serviceaccount
          name: kube-api-access-wchp5
          readOnly: true
          recursiveReadOnly: Disabled
      hostIP: 0.0.0.0
      hostIPs:
      - ip: 0.0.0.0
      observedGeneration: 1
      phase: Running
      podIP: 0.0.0.0
      podIPs:
      - ip: 0.0.0.0
      qosClass: Burstable
      resources:
        limits:
          cpu: 100m
          memory: 64Mi
        requests:
          memory: 16Mi
      startTime: "2026-08-29T13:50:12Z"
    
    events for this pod:
    type     reason     count  objects                                first  last  message
    -------  ---------  -----  -------------------------------------  -----  ----  -----------------------------------------------------------------------------------------------
    Warning  Unhealthy  25     Pod/c8-readiness-flap-dd589d77c-6mxdb  2m     2m    Readiness probe failed: HTTP probe failed with statuscode: 404
    Normal   Started    1      Pod/c8-readiness-flap-dd589d77c-6mxdb  6m     6m    Container started
    Normal   Scheduled  1      Pod/c8-readiness-flap-dd589d77c-6mxdb  6m     6m    Successfully assigned hephaisto-chaos/c8-readiness-flap-dd589d77c-6mxdb to lima-rancher-desktop
    Normal   Pulled     1      Pod/c8-readiness-flap-dd589d77c-6mxdb  6m     6m    Container image "busybox:1.37" already present on machine and can be accessed by the pod
    Normal   Created    1      Pod/c8-readiness-flap-dd589d77c-6mxdb  6m     6m    Container created
    

13. 13 llm model turn internal 4.4s · 12.1k tok · $0.0004

    model output — its reasoning, and the tools it asked for

    -> calls describe_pod

14. 14 tool describe_pod kubernetes 0ms · 5.7 KiB ~ truncated

    arguments

    {"name":"c8-readiness-flap-dd589d77c-6mxdb","namespace":"hephaisto-chaos"}

    result digest — what the model actually saw

    [step 01a05efd-1205-7ce6-9ee3-23e332df10c6] describe_pod
    log digest: 193 lines, 5876 bytes
    
    -- repeated patterns --
    x7 [#67 .. #180]         cpu: 100m
    x6 [#123 .. #172]     observedGeneration: 1
    x5 [#71 .. #183]         memory: 16Mi
    x5 [#124 .. #140]     status: "True"
    x3 [#65 .. #178]     resources:
    x3 [#66 .. #179]       limits:
    x3 [#68 .. #181]         memory: 64Mi
    x3 [#69 .. #182]       requests:
    x3 [#122 .. #138]   - lastTransitionTime: "2026-08-29T13:50:12Z"
    x2 [#1 .. #114] apiVersion: v1
    
    -- notable lines --
            rm -f /www/healthz
            sleep 60
          done
          echo "FATAL: httpd exited unexpectedly"
          exit 1
        command:
        - /bin/sh
          initialDelaySeconds: 3
          periodSeconds: 5
          successThreshold: 1
          timeoutSeconds: 2
        resources:
          limits:
            cpu: 100m
    
    -- last 40 lines --
            cpu: 100m
            memory: 64Mi
          requests:
            cpu: 10m
            memory: 16Mi
        restartCount: 0
        started: true
        state:
          running:
            startedAt: "2026-08-29T13:50:12Z"
        volumeMounts:
        - mountPath: /var/run/secrets/kubernetes.io/serviceaccount
          name: kube-api-access-wchp5
          readOnly: true
          recursiveReadOnly: Disabled
      hostIP: 0.0.0.0
      hostIPs:
      - ip: 0.0.0.0
      observedGeneration: 1
      phase: Running
      podIP: 0.0.0.0
      podIPs:
      - ip: 0.0.0.0
      qosClass: Burstable
      resources:
        limits:
          cpu: 100m
          memory: 64Mi
        requests:
          memory: 16Mi
      startTime: "2026-08-29T13:50:12Z"
    
    events for this pod:
    type     reason     count  objects                                first  last  message
    -------  ---------  -----  -------------------------------------  -----  ----  -----------------------------------------------------------------------------------------------
    Warning  Unhealthy  25     Pod/c8-readiness-flap-dd589d77c-6mxdb  2m     2m    Readiness probe failed: HTTP probe failed with statuscode: 404
    Normal   Started    1      Pod/c8-readiness-flap-dd589d77c-6mxdb  6m     6m    Container started
    Normal   Scheduled  1      Pod/c8-readiness-flap-dd589d77c-6mxdb  6m     6m    Successfully assigned hephaisto-chaos/c8-readiness-flap-dd589d77c-6mxdb to lima-rancher-desktop
    Normal   Pulled     1      Pod/c8-readiness-flap-dd589d77c-6mxdb  6m     6m    Container image "busybox:1.37" already present on machine and can be accessed by the pod
    Normal   Created    1      Pod/c8-readiness-flap-dd589d77c-6mxdb  6m     6m    Container created
    
    [truncated: 132 of 193 lines omitted]
    

    raw result — the untruncated tool output (5.7 KiB)

    apiVersion: v1
    kind: Pod
    metadata:
      creationTimestamp: "2026-08-29T13:50:12Z"
      generateName: c8-readiness-flap-dd589d77c-
      generation: 1
      labels:
        app.kubernetes.io/name: c8-readiness-flap
        hephaisto.chaos/fault: readiness-flap
        hephaisto.chaos/scenario: c8
        pod-template-hash: dd589d77c
      name: c8-readiness-flap-dd589d77c-6mxdb
      namespace: hephaisto-chaos
      ownerReferences:
      - apiVersion: apps/v1
        kind: ReplicaSet
        blockOwnerDeletion: true
        controller: true
        name: c8-readiness-flap-dd589d77c
        uid: f270af4e-1d00-40c9-8937-5dfff4b8712f
      uid: 28f6e690-cbd1-49f8-a60c-ab460ae2790e
    spec:
      containers:
      - args:
        - |
          mkdir -p /www
          echo "c8-readiness-flap" > /www/index.html
          echo "ok" > /www/healthz
          # busybox httpd: static docroot, foreground, backgrounded here so
          # the flip loop can run in the same container without a sidecar.
          httpd -f -p 8080 -h /www &
          HTTPD_PID=$!
          # Give the probe a chance to see Ready at least once before the
          # first unhealthy window (initialDelaySeconds covers this too).
          while kill -0 "$HTTPD_PID" 2>/dev/null; do
            echo "INFO: healthy window open, /healthz -> 200"
            echo "ok" > /www/healthz
            sleep 60
            echo "WARN: entering unhealthy window, /healthz -> 404 (readiness will fail)"
            rm -f /www/healthz
            sleep 60
          done
          echo "FATAL: httpd exited unexpectedly"
          exit 1
        command:
        - /bin/sh
        - -c
        image: busybox:1.37
        imagePullPolicy: IfNotPresent
        name: server
        ports:
        - containerPort: 8080
          name: http
          protocol: TCP
        readinessProbe:
          failureThreshold: 2
          httpGet:
            path: /healthz
            port: http
            scheme: HTTP
          initialDelaySeconds: 3
          periodSeconds: 5
          successThreshold: 1
          timeoutSeconds: 2
        resources:
          limits:
            cpu: 100m
            memory: 64Mi
          requests:
            cpu: 10m
            memory: 16Mi
        terminationMessagePath: /dev/termination-log
        terminationMessagePolicy: File
        volumeMounts:
        - mountPath: /var/run/secrets/kubernetes.io/serviceaccount
          name: kube-api-access-wchp5
          readOnly: true
      dnsPolicy: ClusterFirst
      enableServiceLinks: true
      nodeName: lima-rancher-desktop
      preemptionPolicy: PreemptLowerPriority
      priority: 0
      restartPolicy: Always
      schedulerName: default-scheduler
      securityContext: {}
      serviceAccount: default
      serviceAccountName: default
      terminationGracePeriodSeconds: 5
      tolerations:
      - effect: NoExecute
        key: node.kubernetes.io/not-ready
        operator: Exists
        tolerationSeconds: 300
      - effect: NoExecute
        key: node.kubernetes.io/unreachable
        operator: Exists
        tolerationSeconds: 300
      volumes:
      - name: kube-api-access-wchp5
        projected:
          defaultMode: 420
          sources:
          - serviceAccountToken:
              expirationSeconds: 3607
              path: token
          - configMap:
              items:
              - key: ca.crt
                path: ca.crt
              name: kube-root-ca.crt
          - downwardAPI:
              items:
              - fieldRef:
                  apiVersion: v1
                  fieldPath: metadata.namespace
                path: namespace
    status:
      allocatedResources:
        cpu: 10m
        memory: 16Mi
      conditions:
      - lastTransitionTime: "2026-08-29T13:50:12Z"
        observedGeneration: 1
        status: "True"
        type: PodReadyToStartContainers
      - lastTransitionTime: "2026-08-29T13:50:12Z"
        observedGeneration: 1
        status: "True"
        type: Initialized
      - lastTransitionTime: "2026-08-29T13:56:13Z"
        observedGeneration: 1
        status: "True"
        type: Ready
      - lastTransitionTime: "2026-08-29T13:56:13Z"
        observedGeneration: 1
        status: "True"
        type: ContainersReady
      - lastTransitionTime: "2026-08-29T13:50:12Z"
        observedGeneration: 1
        status: "True"
        type: PodScheduled
      containerStatuses:
      - allocatedResources:
          cpu: 10m
          memory: 16Mi
        containerID: docker://b82f330e2d7c9beae99455d8591f68f2f2d93bc051596fa33c00c4ddf969c89d
        image: busybox:1.37
        imageID: docker-pullable://busybox@sha256:9db7b59979c38555a39def84a31fb98b5296952f9e3afd4f6f11f05b07adfab0
        lastState: {}
        name: server
        ready: true
        resources:
          limits:
            cpu: 100m
            memory: 64Mi
          requests:
            cpu: 10m
            memory: 16Mi
        restartCount: 0
        started: true
        state:
          running:
            startedAt: "2026-08-29T13:50:12Z"
        volumeMounts:
        - mountPath: /var/run/secrets/kubernetes.io/serviceaccount
          name: kube-api-access-wchp5
          readOnly: true
          recursiveReadOnly: Disabled
      hostIP: 0.0.0.0
      hostIPs:
      - ip: 0.0.0.0
      observedGeneration: 1
      phase: Running
      podIP: 0.0.0.0
      podIPs:
      - ip: 0.0.0.0
      qosClass: Burstable
      resources:
        limits:
          cpu: 100m
          memory: 64Mi
        requests:
          memory: 16Mi
      startTime: "2026-08-29T13:50:12Z"
    
    events for this pod:
    type     reason     count  objects                                first  last  message
    -------  ---------  -----  -------------------------------------  -----  ----  -----------------------------------------------------------------------------------------------
    Warning  Unhealthy  25     Pod/c8-readiness-flap-dd589d77c-6mxdb  2m     2m    Readiness probe failed: HTTP probe failed with statuscode: 404
    Normal   Started    1      Pod/c8-readiness-flap-dd589d77c-6mxdb  6m     6m    Container started
    Normal   Scheduled  1      Pod/c8-readiness-flap-dd589d77c-6mxdb  6m     6m    Successfully assigned hephaisto-chaos/c8-readiness-flap-dd589d77c-6mxdb to lima-rancher-desktop
    Normal   Pulled     1      Pod/c8-readiness-flap-dd589d77c-6mxdb  6m     6m    Container image "busybox:1.37" already present on machine and can be accessed by the pod
    Normal   Created    1      Pod/c8-readiness-flap-dd589d77c-6mxdb  6m     6m    Container created
    

15. 15 llm model turn internal 3.9s · 12.9k tok · $0.0004

    model output — its reasoning, and the tools it asked for

    -> calls get_pod

16. 16 tool get_pod kubernetes 0ms · 847 B

    arguments

    {"name":"c8-readiness-flap-dd589d77c-6mxdb","namespace":"hephaisto-chaos"}

    result digest — what the model actually saw

    [step 01a05efd-2152-78d1-bc41-09eea456b430] get_pod
    log digest: 16 lines, 847 bytes
    
    -- last 16 lines --
    pod hephaisto-chaos/c8-readiness-flap-dd589d77c-6mxdb
    phase: Running  node: lima-rancher-desktop  age: 6m
    
    conditions:
    type                       status  reason  message  since
    -------------------------  ------  ------  -------  -----
    PodReadyToStartContainers  True    -       -        6m
    Initialized                True    -       -        6m
    Ready                      True    -       -        31s
    ContainersReady            True    -       -        31s
    PodScheduled               True    -       -        6m
    
    containers:
    container  ready  state    reason  restarts  last exit  image         requests             limits
    ---------  -----  -------  ------  --------  ---------  ------------  -------------------  --------------------
    server     yes    running  -       0         -          busybox:1.37  cpu=10m,memory=16Mi  cpu=100m,memory=64Mi
    

17. 17 llm model turn internal 4.6s · 13.3k tok · $0.0004

    model output — its reasoning, and the tools it asked for

    -> calls describe_pod

18. 18 tool describe_pod kubernetes 0ms · 5.7 KiB ~ truncated

    arguments

    {"name":"c8-readiness-flap-dd589d77c-6mxdb","namespace":"hephaisto-chaos"}

    result digest — what the model actually saw

    [step 01a05efd-3347-74db-98bb-ba0fb142edb3] describe_pod
    log digest: 193 lines, 5876 bytes
    
    -- repeated patterns --
    x7 [#67 .. #180]         cpu: 100m
    x6 [#123 .. #172]     observedGeneration: 1
    x5 [#71 .. #183]         memory: 16Mi
    x5 [#124 .. #140]     status: "True"
    x3 [#65 .. #178]     resources:
    x3 [#66 .. #179]       limits:
    x3 [#68 .. #181]         memory: 64Mi
    x3 [#69 .. #182]       requests:
    x3 [#122 .. #138]   - lastTransitionTime: "2026-08-29T13:50:12Z"
    x2 [#1 .. #114] apiVersion: v1
    
    -- notable lines --
            rm -f /www/healthz
            sleep 60
          done
          echo "FATAL: httpd exited unexpectedly"
          exit 1
        command:
        - /bin/sh
          initialDelaySeconds: 3
          periodSeconds: 5
          successThreshold: 1
          timeoutSeconds: 2
        resources:
          limits:
            cpu: 100m
    
    -- last 40 lines --
            cpu: 100m
            memory: 64Mi
          requests:
            cpu: 10m
            memory: 16Mi
        restartCount: 0
        started: true
        state:
          running:
            startedAt: "2026-08-29T13:50:12Z"
        volumeMounts:
        - mountPath: /var/run/secrets/kubernetes.io/serviceaccount
          name: kube-api-access-wchp5
          readOnly: true
          recursiveReadOnly: Disabled
      hostIP: 0.0.0.0
      hostIPs:
      - ip: 0.0.0.0
      observedGeneration: 1
      phase: Running
      podIP: 0.0.0.0
      podIPs:
      - ip: 0.0.0.0
      qosClass: Burstable
      resources:
        limits:
          cpu: 100m
          memory: 64Mi
        requests:
          memory: 16Mi
      startTime: "2026-08-29T13:50:12Z"
    
    events for this pod:
    type     reason     count  objects                                first  last  message
    -------  ---------  -----  -------------------------------------  -----  ----  -----------------------------------------------------------------------------------------------
    Warning  Unhealthy  25     Pod/c8-readiness-flap-dd589d77c-6mxdb  2m     2m    Readiness probe failed: HTTP probe failed with statuscode: 404
    Normal   Started    1      Pod/c8-readiness-flap-dd589d77c-6mxdb  6m     6m    Container started
    Normal   Scheduled  1      Pod/c8-readiness-flap-dd589d77c-6mxdb  6m     6m    Successfully assigned hephaisto-chaos/c8-readiness-flap-dd589d77c-6mxdb to lima-rancher-desktop
    Normal   Pulled     1      Pod/c8-readiness-flap-dd589d77c-6mxdb  6m     6m    Container image "busybox:1.37" already present on machine and can be accessed by the pod
    Normal   Created    1      Pod/c8-readiness-flap-dd589d77c-6mxdb  6m     6m    Container created
    
    [truncated: 132 of 193 lines omitted]
    

    raw result — the untruncated tool output (5.7 KiB)

    apiVersion: v1
    kind: Pod
    metadata:
      creationTimestamp: "2026-08-29T13:50:12Z"
      generateName: c8-readiness-flap-dd589d77c-
      generation: 1
      labels:
        app.kubernetes.io/name: c8-readiness-flap
        hephaisto.chaos/fault: readiness-flap
        hephaisto.chaos/scenario: c8
        pod-template-hash: dd589d77c
      name: c8-readiness-flap-dd589d77c-6mxdb
      namespace: hephaisto-chaos
      ownerReferences:
      - apiVersion: apps/v1
        kind: ReplicaSet
        blockOwnerDeletion: true
        controller: true
        name: c8-readiness-flap-dd589d77c
        uid: f270af4e-1d00-40c9-8937-5dfff4b8712f
      uid: 28f6e690-cbd1-49f8-a60c-ab460ae2790e
    spec:
      containers:
      - args:
        - |
          mkdir -p /www
          echo "c8-readiness-flap" > /www/index.html
          echo "ok" > /www/healthz
          # busybox httpd: static docroot, foreground, backgrounded here so
          # the flip loop can run in the same container without a sidecar.
          httpd -f -p 8080 -h /www &
          HTTPD_PID=$!
          # Give the probe a chance to see Ready at least once before the
          # first unhealthy window (initialDelaySeconds covers this too).
          while kill -0 "$HTTPD_PID" 2>/dev/null; do
            echo "INFO: healthy window open, /healthz -> 200"
            echo "ok" > /www/healthz
            sleep 60
            echo "WARN: entering unhealthy window, /healthz -> 404 (readiness will fail)"
            rm -f /www/healthz
            sleep 60
          done
          echo "FATAL: httpd exited unexpectedly"
          exit 1
        command:
        - /bin/sh
        - -c
        image: busybox:1.37
        imagePullPolicy: IfNotPresent
        name: server
        ports:
        - containerPort: 8080
          name: http
          protocol: TCP
        readinessProbe:
          failureThreshold: 2
          httpGet:
            path: /healthz
            port: http
            scheme: HTTP
          initialDelaySeconds: 3
          periodSeconds: 5
          successThreshold: 1
          timeoutSeconds: 2
        resources:
          limits:
            cpu: 100m
            memory: 64Mi
          requests:
            cpu: 10m
            memory: 16Mi
        terminationMessagePath: /dev/termination-log
        terminationMessagePolicy: File
        volumeMounts:
        - mountPath: /var/run/secrets/kubernetes.io/serviceaccount
          name: kube-api-access-wchp5
          readOnly: true
      dnsPolicy: ClusterFirst
      enableServiceLinks: true
      nodeName: lima-rancher-desktop
      preemptionPolicy: PreemptLowerPriority
      priority: 0
      restartPolicy: Always
      schedulerName: default-scheduler
      securityContext: {}
      serviceAccount: default
      serviceAccountName: default
      terminationGracePeriodSeconds: 5
      tolerations:
      - effect: NoExecute
        key: node.kubernetes.io/not-ready
        operator: Exists
        tolerationSeconds: 300
      - effect: NoExecute
        key: node.kubernetes.io/unreachable
        operator: Exists
        tolerationSeconds: 300
      volumes:
      - name: kube-api-access-wchp5
        projected:
          defaultMode: 420
          sources:
          - serviceAccountToken:
              expirationSeconds: 3607
              path: token
          - configMap:
              items:
              - key: ca.crt
                path: ca.crt
              name: kube-root-ca.crt
          - downwardAPI:
              items:
              - fieldRef:
                  apiVersion: v1
                  fieldPath: metadata.namespace
                path: namespace
    status:
      allocatedResources:
        cpu: 10m
        memory: 16Mi
      conditions:
      - lastTransitionTime: "2026-08-29T13:50:12Z"
        observedGeneration: 1
        status: "True"
        type: PodReadyToStartContainers
      - lastTransitionTime: "2026-08-29T13:50:12Z"
        observedGeneration: 1
        status: "True"
        type: Initialized
      - lastTransitionTime: "2026-08-29T13:56:13Z"
        observedGeneration: 1
        status: "True"
        type: Ready
      - lastTransitionTime: "2026-08-29T13:56:13Z"
        observedGeneration: 1
        status: "True"
        type: ContainersReady
      - lastTransitionTime: "2026-08-29T13:50:12Z"
        observedGeneration: 1
        status: "True"
        type: PodScheduled
      containerStatuses:
      - allocatedResources:
          cpu: 10m
          memory: 16Mi
        containerID: docker://b82f330e2d7c9beae99455d8591f68f2f2d93bc051596fa33c00c4ddf969c89d
        image: busybox:1.37
        imageID: docker-pullable://busybox@sha256:9db7b59979c38555a39def84a31fb98b5296952f9e3afd4f6f11f05b07adfab0
        lastState: {}
        name: server
        ready: true
        resources:
          limits:
            cpu: 100m
            memory: 64Mi
          requests:
            cpu: 10m
            memory: 16Mi
        restartCount: 0
        started: true
        state:
          running:
            startedAt: "2026-08-29T13:50:12Z"
        volumeMounts:
        - mountPath: /var/run/secrets/kubernetes.io/serviceaccount
          name: kube-api-access-wchp5
          readOnly: true
          recursiveReadOnly: Disabled
      hostIP: 0.0.0.0
      hostIPs:
      - ip: 0.0.0.0
      observedGeneration: 1
      phase: Running
      podIP: 0.0.0.0
      podIPs:
      - ip: 0.0.0.0
      qosClass: Burstable
      resources:
        limits:
          cpu: 100m
          memory: 64Mi
        requests:
          memory: 16Mi
      startTime: "2026-08-29T13:50:12Z"
    
    events for this pod:
    type     reason     count  objects                                first  last  message
    -------  ---------  -----  -------------------------------------  -----  ----  -----------------------------------------------------------------------------------------------
    Warning  Unhealthy  25     Pod/c8-readiness-flap-dd589d77c-6mxdb  2m     2m    Readiness probe failed: HTTP probe failed with statuscode: 404
    Normal   Started    1      Pod/c8-readiness-flap-dd589d77c-6mxdb  6m     6m    Container started
    Normal   Scheduled  1      Pod/c8-readiness-flap-dd589d77c-6mxdb  6m     6m    Successfully assigned hephaisto-chaos/c8-readiness-flap-dd589d77c-6mxdb to lima-rancher-desktop
    Normal   Pulled     1      Pod/c8-readiness-flap-dd589d77c-6mxdb  6m     6m    Container image "busybox:1.37" already present on machine and can be accessed by the pod
    Normal   Created    1      Pod/c8-readiness-flap-dd589d77c-6mxdb  6m     6m    Container created
    

19. 19 llm model turn internal 4.4s · 14.1k tok · $0.0004

    model output — its reasoning, and the tools it asked for

    -> calls get_pod_logs

20. 20 tool get_pod_logs kubernetes 0ms · 1009 B

    arguments

    {"container":"server","name":"c8-readiness-flap-dd589d77c-6mxdb","namespace":"hephaisto-chaos","previous":false}

    result digest — what the model actually saw

    [step 01a05efd-444b-77f1-b71f-830b0cf60514] get_pod_logs
    log digest: 15 lines, 1009 bytes
    
    -- repeated patterns --
    x4 [2026-08-29T13:50:13.020396911Z .. 2026-08-29T13:56:13.027267874Z] INFO: healthy window open, /healthz -> 200
    x3 [2026-08-29T13:51:13.021190439Z .. 2026-08-29T13:55:13.026024637Z] WARN: entering unhealthy window, /healthz -> 404 (readiness will fail)
    
    -- last 15 lines --
    current container logs for hephaisto-chaos/c8-readiness-flap-dd589d77c-6mxdb
    log digest: 7 lines, 602 bytes
    
    -- repeated patterns --
    x4 [2026-08-29T13:50:13.020396911Z .. 2026-08-29T13:56:13.027267874Z] INFO: healthy window open, /healthz -> 200
    x3 [2026-08-29T13:51:13.021190439Z .. 2026-08-29T13:55:13.026024637Z] WARN: entering unhealthy window, /healthz -> 404 (readiness will fail)
    
    -- last 7 lines --
    2026-08-29T13:50:13.020396911Z INFO: healthy window open, /healthz -> 200
    2026-08-29T13:51:13.021190439Z WARN: entering unhealthy window, /healthz -> 404 (readiness will fail)
    2026-08-29T13:52:13.022504426Z INFO: healthy window open, /healthz -> 200
    2026-08-29T13:53:13.023651497Z WARN: entering unhealthy window, /healthz -> 404 (readiness will fail)
    2026-08-29T13:54:13.024896442Z INFO: healthy window open, /healthz -> 200
    2026-08-29T13:55:13.026024637Z WARN: entering unhealthy window, /healthz -> 404 (readiness will fail)
    2026-08-29T13:56:13.027267874Z INFO: healthy window open, /healthz -> 200
    

21. 21 llm model turn internal 19.7s · 15.7k tok · $0.0006

    model output — its reasoning, and the tools it asked for

    -> calls conclude

22. 22 tool conclude internal 0ms · 129 B x failed

    x The arguments dictionary is missing a value for the required parameter 'request'. (Parameter 'arguments')

    arguments

    {"findings":[{"category":"application","confidence":0.95,"evidence":[{"excerpt":"1 ready endpoint(s), 0 not ready\naddress     state  target\n----------  -----  -------------------------------------\n0.0.0.0  ready  Pod/c8-readiness-flap-dd589d77c-6mxdb","step_id":"01a05efc-e9c8-7896-b730-f50d867f55bc"},{"excerpt":"Warning  Unhealthy  25     Pod/c8-readiness-flap-dd589d77c-6mxdb  2m     2m    Readiness probe failed: HTTP probe failed with statuscode: 404","step_id":"01a05efd-2152-78d1-bc41-09eea456b430"},{"excerpt":"2026-08-29T13:50:13.020396911Z INFO: healthy window open, /healthz -\u003E 200\n2026-08-29T13:51:13.021190439Z WARN: entering unhealthy window, /healthz -\u003E 404 (readiness will fail)\n2026-08-29T13:52:13.022504426Z INFO: healthy window open, /healthz -\u003E 200","step_id":"01a05efd-444b-77f1-b71f-830b0cf60514"},{"excerpt":"initialDelaySeconds: 3\n      periodSeconds: 5\n      successThreshold: 1\n      timeoutSeconds: 2","step_id":"01a05efd-3347-74db-98bb-ba0fb142edb3"}],"hypothesis":"The container\u0027s /healthz endpoint intentionally alternates between HTTP 200 and 404 each minute, causing the configured readiness probe (period 5s) to fail repeatedly and produce flapping."}],"summary":"The readiness probe is correctly configured, but the application deliberately returns HTTP 404 on /healthz every minute (as shown by its logs). Since the probe runs every 5 seconds, it sees many failures, causing the pod to flap between ready and not-ready. The issue is an application behavior, not a Kubernetes misconfiguration."}

    result digest — what the model actually saw

    [step 01a05efd-9157-7931-94a3-214384252c38] conclude
    log digest: 1 lines, 129 bytes
    
    -- last 1 lines --
    ERROR: conclude failed: The arguments dictionary is missing a value for the required parameter 'request'. (Parameter 'arguments')
    

23. 23 llm model turn internal 12.4s · 15.8k tok · $0.0006

    model output — its reasoning, and the tools it asked for

    -> calls conclude

24. 24 tool conclude internal 0ms · 141 B

    arguments

    {"request":{"findings":[{"category":"application","confidence":0.95,"evidence":[{"excerpt":"1 ready endpoint(s), 0 not ready\naddress     state  target\n----------  -----  -------------------------------------\n0.0.0.0  ready  Pod/c8-readiness-flap-dd589d77c-6mxdb","step_id":"01a05efc-e9c8-7896-b730-f50d867f55bc"},{"excerpt":"Warning  Unhealthy  25     Pod/c8-readiness-flap-dd589d77c-6mxdb  2m     2m    Readiness probe failed: HTTP probe failed with statuscode: 404","step_id":"01a05efd-2152-78d1-bc41-09eea456b430"},{"excerpt":"2026-08-29T13:50:13.020396911Z INFO: healthy window open, /healthz -\u003E 200\n2026-08-29T13:51:13.021190439Z WARN: entering unhealthy window, /healthz -\u003E 404 (readiness will fail)\n2026-08-29T13:52:13.022504426Z INFO: healthy window open, /healthz -\u003E 200","step_id":"01a05efd-444b-77f1-b71f-830b0cf60514"},{"excerpt":"initialDelaySeconds: 3\n      periodSeconds: 5\n      successThreshold: 1\n      timeoutSeconds: 2","step_id":"01a05efd-3347-74db-98bb-ba0fb142edb3"}],"hypothesis":"The container\u0027s /healthz endpoint intentionally alternates between HTTP 200 and 404 each minute, causing the configured readiness probe (period 5s) to fail repeatedly and produce flapping."}],"summary":"The readiness probe runs every 5\u202Fseconds, but the application deliberately returns HTTP\u00A0404 on /healthz each minute (as shown by its logs). This causes many probe failures and the pod to flap between ready and not\u2011ready. The issue is an application behavior, not a Kubernetes misconfiguration."}}

    result digest — what the model actually saw

    [step 01a05efd-c1e6-7917-9404-b7da1324790c] conclude
    log digest: 1 lines, 141 bytes
    
    -- last 1 lines --
    Conclusion recorded. Your citations are now checked against what the tools actually returned; any that do not match are discarded. Stop here.
    

25. 25 llm model turn internal 9.4s · 16.2k tok · $0.0006

    model output — its reasoning, and the tools it asked for

    **Findings**
    
    | # | Category | Confidence | Evidence (step ID – excerpt) |
    |---|----------|------------|------------------------------|
    | 1 | application | 0.95 | 01a05efc‑e9c8‑7896‑b730‑f50d867f55bc – “1 ready endpoint(s)…0.0.0.0 ready Pod/c8-readiness-flap-dd589d77c-6mxdb” |
    |   |          |      | 01a05efd‑2152‑78d1‑bc41‑09eea456b430 – “Warning Unhealthy … Readiness probe failed: HTTP probe failed with statuscode: 404” |
    |   |          |      | 01a05efd‑444b‑77f1‑b71f‑830b0cf60514 – “2026-08-29T13:50:13.020396911Z INFO: healthy window open, /healthz → 200 … 2026-08-29T13:51:13.021190439Z WARN: entering unhealthy window, /healthz → 404 (readiness will fail) …” |
    |   |          |      | 01a05efd‑3347‑74db‑98bb‑ba0fb142edb3 – “initialDelaySeconds: 3  periodSeconds: 5  successThreshold: 1  timeoutSeconds: 2” |
    
    **Hypothesis**
    
    The container’s `/healthz` endpoint is programmed to alternate between HTTP 200 and HTTP 404 each minute (as shown by its own log messages). The pod’s readiness probe runs every 5 seconds with a 2‑second timeout, so it frequently receives the 404 response. This causes the probe to fail repeatedly, leading to the observed “ReadinessFlapping” condition.
    
    **Summary**
    
    The flapping is not due to Kubernetes misconfiguration or resource limits; it is caused by intentional application behavior that returns HTTP 404 on `/healthz` every minute. The readiness probe therefore sees many failures and toggles the pod’s ready state. Fixing the issue requires changing the application logic (or adjusting the probe to target a stable endpoint) rather than restarting the pod.

26. 26 llm model turn internal 9.5s · 4.6k tok · $0.0001

    model output — its reasoning, and the tools it asked for

    {
      "summary": "The readiness flapping is caused by intentional application behavior (alternating /healthz responses), not a Kubernetes issue. Fix requires code/config change, so no automated action should be taken.",
      "no_action_required": true,
      "actions": []
    }

findings 1

plan

The readiness flapping is caused by intentional application behavior (alternating /healthz responses), not a Kubernetes issue. Fix requires code/config change, so no automated action should be taken.

No action was proposed. The planner set no_action_required — which is the expected outcome for most incidents, and what the planning prompt tells it to default to.