test liveness doesn't kill pod as expected

gistfile1.txt

Name:         test-7b77dfc957-7fd2p
Namespace:    gmp-test
Priority:     0
Node:         gke-xxxx
Start Time:   Sun, 20 Aug 2023 21:57:18 -0400
Labels:       app=test
              pod-template-hash=7b77dfc957
Annotations:  <none>
Status:       Running
IP:           10.xxx.xxx.xxx
IPs:
  IP:           10.xxx.xxx.xxx
Controlled By:  ReplicaSet/test-7b77dfc957
Containers:
  liveness:
    Container ID:  containerd://4d774ed85d5d2fd63f56a47433f16b597174922be10408072e3921edcf0dd46a
    Image:         k8s.gcr.io/busybox
    Image ID:      sha256:36a4dca0fe6fb2a5133dc11a6c8907a97aea122613fa3e98be033959a0821a1f
    Port:          <none>
    Host Port:     <none>
    Args:
      /bin/sh
      -c
      touch /tmp/healthy; sleep 10; rm -rf /tmp/healthy; sleep 600
    State:          Running
      Started:      Sun, 20 Aug 2023 21:57:19 -0400
    Ready:          True
    Restart Count:  0
    Liveness:       exec [invalid] delay=5s timeout=1s period=5s #success=1 #failure=3
    Environment:    <none>
    Mounts:
      /var/run/secrets/kubernetes.io/serviceaccount from kube-api-access-cgtxg (ro)
Conditions:
  Type              Status
  Initialized       True 
  Ready             True 
  ContainersReady   True 
  PodScheduled      True 
Volumes:
  kube-api-access-cgtxg:
    Type:                    Projected (a volume that contains injected data from multiple sources)
    TokenExpirationSeconds:  3607
    ConfigMapName:           kube-root-ca.crt
    ConfigMapOptional:       <nil>
    DownwardAPI:             true
QoS Class:                   BestEffort
Node-Selectors:              <none>
Tolerations:                 node.kubernetes.io/not-ready:NoExecute op=Exists for 300s
                             node.kubernetes.io/unreachable:NoExecute op=Exists for 300s
Events:
  Type     Reason     Age                  From               Message
  ----     ------     ----                 ----               -------
  Normal   Scheduled  5m11s                default-scheduler  Successfully assigned gmp-test/test-7b77dfc957-7fd2p to gke-jd-infra-dev-infra-20230815082920-cca5247d-g9nx
  Normal   Pulling    5m11s                kubelet            Pulling image "k8s.gcr.io/busybox"
  Normal   Pulled     5m10s                kubelet            Successfully pulled image "k8s.gcr.io/busybox" in 435.627709ms (435.636685ms including waiting)
  Normal   Created    5m10s                kubelet            Created container liveness
  Normal   Started    5m10s                kubelet            Started container liveness
  Warning  Unhealthy  5m1s                 kubelet            Liveness probe errored: rpc error: code = Unknown desc = failed to exec in container: failed to start exec "918932e810262e38004400d76cc942dd03efa6ffe635dbc2cbb6acac7335c83b": OCI runtime exec failed: exec failed: unable to start container process: exec: "invalid": executable file not found in $PATH: unknown
  Warning  Unhealthy  4m56s                kubelet            Liveness probe errored: rpc error: code = Unknown desc = failed to exec in container: failed to start exec "3b85af4e51538961d4ea6653106773ade8b52c858f0a47cb0d35d0053e88199c": OCI runtime exec failed: exec failed: unable to start container process: exec: "invalid": executable file not found in $PATH: unknown
  Warning  Unhealthy  4m51s                kubelet            Liveness probe errored: rpc error: code = Unknown desc = failed to exec in container: failed to start exec "4db343b7e1d4d8522752b6deebef1a04a49d064830d270b08e7764eaf7188a45": OCI runtime exec failed: exec failed: unable to start container process: exec: "invalid": executable file not found in $PATH: unknown
  Warning  Unhealthy  4m46s                kubelet            Liveness probe errored: rpc error: code = Unknown desc = failed to exec in container: failed to start exec "ba50ac4fa2b9a87f7c4d9244d090d78a44a1ac52dd117430dcd32f3e89984668": OCI runtime exec failed: exec failed: unable to start container process: exec: "invalid": executable file not found in $PATH: unknown
  Warning  Unhealthy  4m41s                kubelet            Liveness probe errored: rpc error: code = Unknown desc = failed to exec in container: failed to start exec "2b6b707bac4eaff2089ef15266059306c194ac4627a7af4ff9f52c52b2a65c41": OCI runtime exec failed: exec failed: unable to start container process: exec: "invalid": executable file not found in $PATH: unknown
  Warning  Unhealthy  4m36s                kubelet            Liveness probe errored: rpc error: code = Unknown desc = failed to exec in container: failed to start exec "c3be98a7dbea03b09262710cba68fffa04c26d9da79ac5dffcc6d765b06e028a": OCI runtime exec failed: exec failed: unable to start container process: exec: "invalid": executable file not found in $PATH: unknown
  Warning  Unhealthy  4m31s                kubelet            Liveness probe errored: rpc error: code = Unknown desc = failed to exec in container: failed to start exec "ac5c0da936291c3f57bc339a11a3c2f1e90e5a5097c25c24e80f6359d56ff34c": OCI runtime exec failed: exec failed: unable to start container process: exec: "invalid": executable file not found in $PATH: unknown
  Warning  Unhealthy  4m26s                kubelet            Liveness probe errored: rpc error: code = Unknown desc = failed to exec in container: failed to start exec "b3a4599e5e3456084cfbb9ec385fd7dc7dbf4322e8fe02854fda771315e0669a": OCI runtime exec failed: exec failed: unable to start container process: exec: "invalid": executable file not found in $PATH: unknown
  Warning  Unhealthy  4m21s                kubelet            Liveness probe errored: rpc error: code = Unknown desc = failed to exec in container: failed to start exec "68ef4cbbaac59729d8790b2371ff7cfb83b189741c31baba9fd01f4f840fea73": OCI runtime exec failed: exec failed: unable to start container process: exec: "invalid": executable file not found in $PATH: unknown
  Warning  Unhealthy  6s (x51 over 4m16s)  kubelet            (combined from similar events): Liveness probe errored: rpc error: code = Unknown desc = failed to exec in container: failed to start exec "d178c3aa6517389b7571c5dc85609012898c226f1196864d53284439a55225f6": OCI runtime exec failed: exec failed: unable to start container process: exec: "invalid": executable file not found in $PATH: unknown