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Questions tagged [kubernetes]

Kubernetes is an open source orchestration system for Docker containers. It handles scheduling onto nodes in a compute cluster and actively manages workloads to ensure that their state matches the users declared intentions. Using the concepts of "labels" and "pods", it groups the containers which make up an application into logical units for easy management and discovery.

Kubernetes is an open source orchestration system for Docker containers. It handles scheduling onto nodes in a compute cluster and actively manages workloads to ensure that their state matches the users declared intentions. Using the concepts of "labels" and "pods", it groups the containers which make up an application into logical units for easy management and discovery.

For more details, visit the official Kubernetes page.

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Flanneld not picking up the right network settings

I am running Centos 7 with Kubernetes, Docker, etcd and flanneld. Currently I am seeing a problem with Flanneld which I can't seem to figure out. I have setup etcd and configured the network. Following curl provides me the right output: curl…
Exsisto
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Can't connect to kubernetes's service by IP

I'm following steps from the k8s guestbook example (https://github.com/GoogleCloudPlatform/kubernetes/tree/master/examples/guestbook) and i have issues with frontend service described in this example. frontend-controller-182tv 10.148.3.4 …
TermiT
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Unable to Block Kubernetes Ports in iptables

I'm currently working on securing my Kubernetes server by blocking certain ports using iptables. I've applied the following rules to drop traffic on specific ports: -A INPUT -p tcp -m tcp --dport 30880 -j DROP -A INPUT -p tcp -m tcp --dport 30088 -j…
Samoed
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Terraform Helm set tolerations

I'm trying to set tolerations values in Terraform Helm for the occm chart in the following way: set { name = "tolerations" value = yamlencode([ { key = "node.kubernetes.io/test" value = "true" effect = "NoSchedule" …
sctx
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Does AWS EKS 1.27 have Graceful Node Shutdown enabled by default?

I'm not sure if the GracefulNodeShutdown feature gate is enabled in EKS 1.27. I know that for regular vanilla Kubernetes 1.27 is set to true by default GracefulNodeShutdown since 1.21. But I can't find in the AWS documentation what feature gates are…
RubenLaguna
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Kube API Server Doesn't Come up

I have a K8s cluster running across 2 VM hosts, with the 6 k8s nodes and 3 masters split across both. We recently had an issue where one of the servers went down leaving me with only one master and 3 nodes. All my services are still running but I…
Kagashe
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Unable to Install Kubelet, Kubeadm Because It Requires Later Version of Cri-Tools

-1 I am taking a Coursera class for CKA Prep and as part of that we are provisioning an instance of a node on Amazon EC2, installing the container runtime (which is containerd in this case) and now I am at the step where I need to install kubeadmn…
Rasputin
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Ranchers cattle-cluster-agent-* pod log errors

When deploying rancher onto a downstream cluster the cattle-cluster-agent- pods appear and they show running. The issue is (1) when I try to access the cluster via the UI, the UI displayed " Cluster agent is not connected" and I cannot manage the…
Cody Dacosta
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Fluentd logs not sent to Elasticsearch

I have a cluster in VirtualBox to learn kubernetes. I have a deployment that contains MySQL and phpMyAdmin. I created a DemonSet that has the fluentd image and collects the logs to transmit them to elastics at ip 10.0.2.11. I don't understand why it…
vasile Berco
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Facing error again in minikube renew certificate

When I run kubectl command getting error is certificate expired How to debug minikube errors? kubectl get pods Unable to connect to the server: x509: certificate has expired or is not yet valid
Paul
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How to check if there is a broken ownerRef in my Kubernetes cluster?

We had an issue with clusterctl move (cluster api). clusterctl -n org-foo move --to-kubeconfig=.kubeconfigs/.foo-1-kubeconfig Performing move... Discovering Cluster API objects Error: failed to get object graph: failed to check for provisioned…
guettli
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microk8s kubelet reboot loop

I have a k8 cluster using microk8s, and the cluster started to misbehave, unresponsive / providing stale states when scheduling pods, managing nodes, etc. I have gone through and rebooted all manager nodes, and removed all worker nodes, to reduce…
freebie
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Istio: How do I exclude unhealthy destination from a VirtualService?

I'm trying to configure load balancing and failover for external services. Each HTTP endpoint for the service needs its own specific headers. I created a virtual service with two destinations: apiVersion: networking.istio.io/v1beta1 kind:…
hylowaker
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Windows Node HNS Network Restart Error 0xc0000005

I have a Kubernetes cluster with 2 Linux nodes and 2 Windows Server 2019 running Kubernetes v1.26.0 and Containerd v1.6.20 also Vmware tools version 10.3.2 The Linux nodes are running just fine, but Windows node are misbehaving. This is a new…
Kafiti
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Troubleshooting K8 cluster with StatefulSets that don't respond to scales

I currently have a Kubernetes environment which is generally not behaving (slow response times to commands, pods not being scheduled, etc). I've not been able to find any trouble shooting information in the form of events or errors (that I've…
freebie
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