I have started pods with command $ kubectl run busybox \ –image=busybox \ –restart=Never \ –tty \ -i \ –generator=run-pod/v1 Something went wrong, and now I can’t delete this Pod. I tried using the methods described below but the Pod keeps being recreated. $ kubectl delete pods busybox-na3tm pod “busybox-na3tm” deleted $ kubectl get pods … Read more
A Kubernetes Service can have a targetPort and port in the service definition: kind: Service apiVersion: v1 metadata: name: my-service spec: selector: app: MyApp ports: – protocol: TCP port: 80 targetPort: 9376 What is the difference between the port and targetPort? 11 Answers 11
I am trying to deploy nginx on kubernetes, kubernetes version is v1.5.2, I have deployed nginx with 3 replica, YAML file is below, apiVersion: extensions/v1beta1 kind: Deployment metadata: name: deployment-example spec: replicas: 3 revisionHistoryLimit: 2 template: metadata: labels: app: nginx spec: containers: – name: nginx image: nginx:1.10 ports: – containerPort: 80 and now I want … Read more
I have the following replication controller in Kubernetes on GKE: apiVersion: v1 kind: ReplicationController metadata: name: myapp labels: app: myapp spec: replicas: 2 selector: app: myapp deployment: initial template: metadata: labels: app: myapp deployment: initial spec: containers: – name: myapp image: myregistry.com/myapp:5c3dda6b ports: – containerPort: 80 imagePullPolicy: Always imagePullSecrets: – name: myregistry.com-registry-key Now, if I … Read more
Upon looking at the docs, there is an API call to delete a single pod, but is there a way to delete all pods in all namespaces? 16 Answers 16
I have been creating pods with type:deployment but I see that some documentation uses type:pod, more specifically the documentation for multi-container pods: apiVersion: v1 kind: Pod metadata: name: “” labels: name: “” namespace: “” annotations: [] generateName: “” spec: ? “// See ‘The spec schema’ for details.” : ~ But to create pods I can … Read more
I am quite confused about the roles of Ingress and Load Balancer in Kubernetes. As far as I understand Ingress is used to map incoming traffic from the internet to the services running in the cluster. The role of load balancer is to forward traffic to a host. In that regard how does ingress differ … Read more
What exactly is the difference between Apache’s Mesos and Google’s Kubernetes? I understand both are server cluster management software. Can anyone elaborate where the main differences are – when would which framework be preferred? Why would you want to use Kubernetes on top of Mesosphere? 7 Answers 7
I tried to delete a ReplicationController with 12 pods and I could see that some of the pods are stuck in Terminating status. My Kubernetes cluster consists of one control plane node and three worker nodes installed on Ubuntu virtual machines. What could be the reason for this issue? NAME READY STATUS RESTARTS AGE pod-186o2 … Read more
What I understood by the documentation is that: kubectl create Creates a new k8s resource in the cluster kubectl replace Updates a resource in the live cluster kubectl apply If I want to do create + replace (Reference) My questions are Why are there three operations for doing the same task in a cluster? What … Read more
