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Questions tagged [kubernetes-networking]

106 questions
43
votes
5 answers

What is the cluster IP in Kubernetes?

I have created a cluster of three nodes: one master, two minions. How to check the cluster IP in Kubernetes? Is it the IP of the master node?
Madhurima Mishra
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28
votes
3 answers

Why do we need a port/containerPort in a Kuberntes deployment/container definition?

When I define e.g. a deployment in Kubernetes there is a section with a list of containers and each of them contains an array of ports, e.g.: apiVersion: apps/v1 kind: Deployment spec: template: spec: containers: - name: my-nginx …
Ilya Chernomordik
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14
votes
1 answer

External ip pending Kubernetes Load balancer

Hi Installed Kubernetes using kubeadm in centos When i create the deployment using type Load Balancer in yaml file the External Ip is Pending for Kubernetes LB it is stuck in Pending state NAME TYPE CLUSTER-IP EXTERNAL-IP …
J Jedidiah
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10
votes
1 answer

How to resolve pod hostnames from other pods?

I have 2 pods running on 2 nodes, each pod runs in different node. These nodes are on the same subnet and can TCP/UDP/ICMP themselves. These pods got some hostnames, ie: drill-staging-75cddd789-kbzsq drill-staging-75cddd789-amsrj From pod…
rudolfdobias
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8
votes
2 answers

Accessing kubernetes dashboard gives Error trying to reach service: 'dial tcp 10.44.0.2:8443: connect: connection refused'

I used kubernetes hard way and managed to deploy a cluster successfully with kubernetes 1.18.6 I used vmware and kubernetes 1.18.6. I deployed metric-server and kubernets dashboard I used this command --> …
AMendis
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6
votes
5 answers

How can I isolate pods in namespace using NetworkPolicy without disabling external traffic to Kubernetes pods

I am trying to isolate my pods in namespace from other namespaces. I have tried to create a NetworkPolicy: apiVersion: networking.k8s.io/v1 kind: NetworkPolicy metadata: name: deny-from-other-namespaces spec: podSelector: matchLabels: …
Pratheesh
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5
votes
0 answers

minikube start fails with "libmachine: Error dialing TCP: dial tcp 10.43.239.243:49167: connect: no route to host" error inside docker in docker

minikube start fails with error libmachine: Error dialing TCP: dial tcp 10.43.239.243:49167: connect: no route to host when run in the below setup: k8s cluster (with containerd as container runtime) with 2 pods: one with docker client container,…
rok
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5
votes
1 answer

Kubernetes nodeport not visible as listening on host but service working

I have a service running on kubernetes exposed via nodeport like so: test-service NodePort 100.100.246.5 30005:30005/TCP That service is reachable from other nodes and is working properly; however, I…
thewooster
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4
votes
1 answer

Within a k8s cluster Should I always call the Ingress Rule Or Node Port Service Name?

I have a number of restful services within our system Some are our within the kubernetes cluster Others are on legacy infrasture and are hosted on VM's Many of our restful services make synchronous calls to each other (so not asynchronously using…
user3210699
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4
votes
1 answer

GKE BackendConfig not working with customRequestHeaders

I have a nodejs application running on Google Kubernetes Engine (v1.20.8-gke.900) I want to add custom header to get client's Region and lat long so I refer to this article and this one also and created below kubernetes config file, but when I am…
Raunak Gupta
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3
votes
3 answers

What does "within the cluster" mean in the context of ClusterIP service?

I have a Kubernetes cluster with the followings: A deployment of some demo web server A ClusterIP service that exposes this deployment pods Now, I have the cluster IP of the service: NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S)…
YoavKlein
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3
votes
2 answers

How would I set up access to multiple Nodes with a single Service in kubernetes?

I am trying to set up access to Pods on multiple Nodes with a single Service yaml. The Pods all have the same label (say, label:app), but are distributed across several Nodes, instead of on a single Node. As far as I know, I can set up a Service to…
asuprem
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2
votes
1 answer

Kubernetes network policy blocks traffic between nodes on AKS

I am using Azure Kubernetes Service (AKS) and want to make sure pods inside a specific namespace can only receive ingress traffic from other pods in the same namespace. I found this network policy to achieve this namespace isolation (from…
JNK
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2
votes
2 answers

Kubernetes MetalLB External IP not reachable from browser

I have a nginx deployment with service type LoadBalancer. I got a external IP which is accessible from master and worker node. I am not able to access it from browser. What am I missing?
Manmohan Rawat
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2
votes
1 answer

Error "no Route matched with those values" with the Kong ingress controller

Attempting to connect to a Jupyter Lab container (ultimately other applications as well) running on a cloud managed Kubernetes service using Kong as the ingress controller. Receiving "no Route matched with those values" on the http response to…
jpjenk
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