Kubernetes continuously killing and recreating last pod - kubernetes

Question

The last(3rd) container is continuously being delete and recreated by kubernetes. It goes from Running to Terminating state. The Kubernetes UI shows status as : 'Terminated: ExitCode:${state.terminated.exitCode}'
My deployment YAML:
apiVersion: autoscaling/v1
kind: HorizontalPodAutoscaler
metadata:
name: openapi
spec:
scaleTargetRef:
kind: Deployment
name: openapi
minReplicas: 3
maxReplicas: 10
targetCPUUtilizationPercentage: 75
---
kind: Service
apiVersion: v1
metadata:
name: openapi
spec:
selector:
app: openapi
ports:
- name: http
protocol: TCP
port: 80
targetPort: 8080
- name: https
protocol: TCP
port: 443
targetPort: 8443
type: LoadBalancer
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: openapi
spec:
template:
metadata:
labels:
app: openapi
spec:
containers:
- name: openapi
image: us.gcr.io/PROJECT_ID/openapi:latest
imagePullPolicy: Always
ports:
- containerPort: 8080
Portion of Output of kubectl get events -n namespace:
Pod Normal Created kubelet Created container
Pod Normal Started kubelet Started container
Pod Normal Killing kubelet Killing container with id docker://openapi:Need to kill Pod
ReplicaSet Normal SuccessfulCreate replicaset-controller (combined from similar events): Created pod: openapi-7db5f8d479-p7mcl
ReplicaSet Normal SuccessfulDelete replicaset-controller (combined from similar events): Deleted pod: openapi-7db5f8d479-pgmxf
HorizontalPodAutoscaler Normal SuccessfulRescale horizontal-pod-autoscaler New size: 2; reason: Current number of replicas above Spec.MaxReplicas
HorizontalPodAutoscaler Normal SuccessfulRescale horizontal-pod-autoscaler New size: 3; reason: Current number of replicas below Spec.MinReplicas
Deployment Normal ScalingReplicaSet deployment-controller Scaled up replica set openapi-7db5f8d479 to 3
Deployment Normal ScalingReplicaSet deployment-controller Scaled down replica set openapi-7db5f8d479 to 2
kubectl describe pod -n default openapi-7db5f8d479-2d2nm for a pod that spawned and was killed:
A different pod with a different unique id spawns each time after a pod gets killed by Kubernetes.
Name: openapi-7db5f8d479-2d2nm
Namespace: default
Node: gke-testproject-default-pool-28ce3836-t4hp/10.150.0.2
Start Time: Thu, 23 Nov 2017 11:50:17 +0000
Labels: app=openapi
pod-template-hash=3861948035
Annotations: kubernetes.io/created-by={"kind":"SerializedReference","apiVersion":"v1","reference":{"kind":"ReplicaSet","namespace":"default","name":"openapi-7db5f8d479","uid":"b7b3e48f-ceb2-11e7-afe7-42010a960003"...
kubernetes.io/limit-ranger=LimitRanger plugin set: cpu request for container openapi
Status: Terminating (expires Thu, 23 Nov 2017 11:51:04 +0000)
Termination Grace Period: 30s
IP:
Created By: ReplicaSet/openapi-7db5f8d479
Controlled By: ReplicaSet/openapi-7db5f8d479
Containers:
openapi:
Container ID: docker://93d2f1372a7ad004aaeb34b0bc9ee375b6ed48609f505b52495067dd0dcbb233
Image: us.gcr.io/testproject-175705/openapi:latest
Image ID: docker-pullable://us.gcr.io/testproject-175705/openapi#sha256:54b833548cbed32db36ba4808b33c87c15c4ecde673839c3922577f30b
Port: 8080/TCP
State: Terminated
Reason: Error
Exit Code: 143
Started: Thu, 23 Nov 2017 11:50:18 +0000
Finished: Thu, 23 Nov 2017 11:50:35 +0000
Ready: False
Restart Count: 0
Requests:
cpu: 100m
Environment: <none>
Mounts:
/var/run/secrets/kubernetes.io/serviceaccount from default-token-61k6c (ro)
Conditions:
Type Status
Initialized True
Ready False
PodScheduled True
Volumes:
default-token-61k6c:
Type: Secret (a volume populated by a Secret)
SecretName: default-token-61k6c
Optional: false
QoS Class: Burstable
Node-Selectors: <none>
Tolerations: node.alpha.kubernetes.io/notReady:NoExecute for 300s
node.alpha.kubernetes.io/unreachable:NoExecute for 300s
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Normal Scheduled 21s default-scheduler Successfully assigned openapi-7db5f8d479-2d2nm to gke-testproject-default-pool-28ce3836-t4hp
Normal SuccessfulMountVolume 21s kubelet, gke-testproject-default-pool-28ce3836-t4hp MountVolume.SetUp succeeded for volume "default-token-61k6c"
Normal Pulling 21s kubelet, gke-testproject-default-pool-28ce3836-t4hp pulling image "us.gcr.io/testproject-175705/openapi:latest"
Normal Pulled 20s kubelet, gke-testproject-default-pool-28ce3836-t4hp Successfully pulled image "us.gcr.io/testproject-175705/openapi:latest"
Normal Created 20s kubelet, gke-testproject-default-pool-28ce3836-t4hp Created container
Normal Started 20s kubelet, gke-testproject-default-pool-28ce3836-t4hp Started container
Normal Killing 3s kubelet, gke-testproject-default-pool-28ce3836-t4hp Killing container with id docker://openapi:Need to kill Pod

Answer 1

Check the pod logs using the commands below:
kubectl get events -w -n namespace
and
kubectl describe pod -n namespace pod_name