Service: This directs the traffic to a pod. TargetPort: This is the actual port on which your application is running inside the container. Port: Some times your application inside container serves different services on a different port. Example: The actual application can run 8080 and health checks for this application can run on 8089 port … Read more
You can configure your pod with a grace period (for example 30 seconds or more, depending on container startup time and image size) and set “imagePullPolicy: “Always”. And use kubectl delete pod pod_name. A new container will be created and the latest image automatically downloaded, then the old container terminated. Example: spec: terminationGracePeriodSeconds: 30 containers: … Read more
I am not exactly sure what you are asking as it seems you already know about the minikube service <SERVICE_NAME> –url command which will give you a url where you can access the service. In order to open the exposed service, the minikube service <SERVICE_NAME> command can be used: $ kubectl run hello-minikube –image=gcr.io/google_containers/echoserver:1.4 –port=8080 … Read more
You can export the variable and use it while running helm install. Before that, you have to modify your chart so that the value can be set while installation. Skip this part, if you already know, how to setup template fields. As you don’t want to expose the data, so it’s better to have it … Read more
In the official documentation I found this: https://kubernetes.io/docs/tasks/access-application-cluster/access-cluster/#accessing-the-api-from-a-pod Apparently I was missing a security token that I didn’t need in a previous version of Kubernetes. From that, I devised what I think is a simpler solution than running a proxy or installing golang on my container. See this example that gets the information, from the … Read more
As @Sukumar commented, you need to have your Dockerfile have a Command to run or have your ReplicationController specify a command. The pod is crashing because it starts up then immediately exits, thus Kubernetes restarts and the cycle continues.
I stumbled over the same issue and found a nice solution which does not need any static ip configuration: You can access a service via it’s DNS name (as mentioned by you): servicename.namespace.svc.cluster.local You can use that DNS name to reference it in another namespace via a local service: kind: Service apiVersion: v1 metadata: name: … Read more
[*] A ClusterIP exposes the following: spec.clusterIp:spec.ports[*].port You can only access this service while inside the cluster. It is accessible from its spec.clusterIp port. If a spec.ports[*].targetPort is set it will route from the port to the targetPort. The CLUSTER-IP you get when calling kubectl get services is the IP assigned to this service within … Read more
The Pod Security Context supports setting an fsGroup, which allows you to set the group ID that owns the volume, and thus who can write to it. The example in the docs: apiVersion: v1 kind: Pod metadata: name: hello-world spec: containers: # specification of the pod’s containers # … securityContext: fsGroup: 1234 More info on … Read more
It looks like you are using a custom Kubernetes Cluster (using minikube, kubeadm or the like). In this case, there is no LoadBalancer integrated (unlike AWS or Google Cloud). With this default setup, you can only use NodePort or an Ingress Controller. With the Ingress Controller you can setup a domain name which maps to … Read more