K
Q

How do i change Kubernetes DiskPressure status from true to false?

8/5/2020

After creating a simple nginx deployment, my pod status shows as "PENDING". When I run kubectl get pods command, I get the following:

NAME                                READY   STATUS    RESTARTS   AGE
nginx-deployment-6b474476c4-dq26w   0/1     Pending   0          50m
nginx-deployment-6b474476c4-wjblx   0/1     Pending   0          50m

If I check on my node health, I get:

Taints:             node.kubernetes.io/disk-pressure:NoSchedule
Unschedulable:      false
Lease:
  HolderIdentity:  kubernetes-master
  AcquireTime:     <unset>
  RenewTime:       Wed, 05 Aug 2020 12:43:57 +0530
Conditions:
  Type                 Status  LastHeartbeatTime                 LastTransitionTime                Reason                       Message
  ----                 ------  -----------------                 ------------------                ------                       -------
  NetworkUnavailable   False   Wed, 05 Aug 2020 09:12:31 +0530   Wed, 05 Aug 2020 09:12:31 +0530   CalicoIsUp                   Calico is running on this node
  MemoryPressure       False   Wed, 05 Aug 2020 12:43:36 +0530   Tue, 04 Aug 2020 23:01:43 +0530   KubeletHasSufficientMemory   kubelet has sufficient memory available
  DiskPressure         True    Wed, 05 Aug 2020 12:43:36 +0530   Tue, 04 Aug 2020 23:02:06 +0530   KubeletHasDiskPressure       kubelet has disk pressure
  PIDPressure          False   Wed, 05 Aug 2020 12:43:36 +0530   Tue, 04 Aug 2020 23:01:43 +0530   KubeletHasSufficientPID      kubelet has sufficient PID available
  Ready                True    Wed, 05 Aug 2020 12:43:36 +0530   Tue, 04 Aug 2020 23:02:06 +0530   KubeletReady                 kubelet is posting ready status. AppArmor enabled
-- manjeet
kubernetes

Similar Questions

Accessing service using istio ingress gives 503 error when mTLS is enabled
Kubernetes communication between pods using REST
Is it ok that Flanneld is listening on public interface udp port 8472?
Ingress controller nginx exclude IP from basic_auth
Internal certificate used when installing Helm Tiller Kubernetes

1 Answer

8/5/2020

You can remove the taint for disk pressure using below command but ideally you need to investigate why kubelet is reporting disk pressure . The node may be out of disk space.

kubectl taint nodes <nodename> node.kubernetes.io/disk-pressure-

This will get you out of pending state of the nginx pods.

-- Arghya Sadhu
Source: StackOverflow