What is considered a good practice with K8S for managing multiple environments (QA, Staging, Production, Dev, etc)? As an example, say that a team is working on a product which requires deploying a few APIs, along with a front-end application. Usually, this will require at least 2 environments: Staging: For iterations/testing and validation before releasing … Read more
I’ve had a “stuck” namespace that I deleted showing in this eternal “terminating” status. 28 Answers 28
How do I automatically restart Kubernetes pods and pods associated with deployments when their configmap is changed/updated? I know there’s been talk about the ability to automatically restart pods when a config maps changes but to my knowledge this is not yet available in Kubernetes 1.2. So what (I think) I’d like to do is … Read more
All of a sudden, I cannot deploy some images which could be deployed before. I got the following pod status: [root@webdev2 origin]# oc get pods NAME READY STATUS RESTARTS AGE arix-3-yjq9w 0/1 ImagePullBackOff 0 10m docker-registry-2-vqstm 1/1 Running 0 2d router-1-kvjxq 1/1 Running 0 2d The application just won’t start. The pod is not trying … Read more
I have Kubernetes working well in two different environments, namely in my local environment (MacBook running minikube) and as well as on Google’s Container Engine (GCE, Kubernetes on Google Cloud). I use the MacBook/local environment to develop and test my YAML files and then, upon completion, try them on GCE. Currently I need to work … Read more
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
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
