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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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K8s monitor resource utilization then create container automatically

Tried to find a solution for a project, not sure can K8s do that by itself or need a third-party tool to get involved. For example, I have 3 Nginx containers to provide load balance for our web service. I would like to let K8s monitor…
ITnewbie
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Istio Keeps On Showing TcpProxyValidationError Errors

I initially created an EnvoyFilter to apply idle_timeout of 5s to outbound requests originating from workloads with label app: mecha-dev. apiVersion: networking.istio.io/v1alpha3 kind: EnvoyFilter metadata: name: tcp-idle-timeout spec: …
bakadevops
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Google Kubernetes Cluster rebuild issue

We have set up a Google Kubernetes Cluster with VMs scaling from 2 to 5. There are 5-6 pods/containers running on it. We have also set up ngnix for routing, and everything is running perfectly. But we are having issues with the Google cluster. It…
Mahendra
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worker_processes value for Nginx/Openresty running on Kubernetes

Based on the documentation here, https://nginx.org/en/docs/ngx_core_module.html#worker_processes The worker_processes is defined as the number of worker processes. The optimal value depends on many factors including (but not limited to) the number…
Kshitij Joshi
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Prometheus not connected to alert manager in GKE

I installed kube-prometheus-stack 15.3.1 into a GKE cluster using helm (in "monitoring" namespace). I used the values.yaml to open up ingresses on some of the components and to add SMTP info and reciever details into the alert manager. For the most…
Toby 1 Kenobi
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CreateContainerError: context deadline exceeded

For a project, I must use big containers (500Mb to 60Gb). I don't have a precise measurement but when I run containers larger than 3-5Gb with gitlab-runner, I get an error in rancher: CreateContainerError: context deadline exceeded Our kubernetes…
Oyabi
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Why is My Istio EnvoyFilter with TCP Idle Timeout Setting not working?

I have created an EnvoyFilter to apply TCP idle timeout to outbound requests. Here's my filter configuration: apiVersion: networking.istio.io/v1alpha3 kind: EnvoyFilter metadata: name: tcp-idle-timeout spec: workloadSelector: labels: …
bakadevops
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New Kubernetes IngressClass resource and only specifying IngressClassName (nginx ingress controller)

Summary I am specifying an IngressClassName without a corresponding IngressClass resource and it is unexpectedly working fine; my understanding was you need to define the IngressClass resource as well. Previously we were using the annotation based…
Friedrich 'Fred' Clausen
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GKE fails to mount volumes to deployments/pods: timed out waiting for the condition

We ran into an issue with our GKE volume usage. Starting from tonight our deployments couldn't access our main document storage disk anymore, the logs looked something like this: ... …
Jacob
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Kubernetes - vSphere Cloud Provider

I'm following this doc https://cloud-provider-vsphere.sigs.k8s.io/tutorials/kubernetes-on-vsphere-with-kubeadm.html I am using a load balancer as my ControlPlaneEndpoint, now I would like to join a new master to the cluster passing the…
Alexandre Cardoso
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Kubernetes trouble - /var/lib/calico/nodename: no such file or directory

I'm following guide from Linux Foundation "Kubernetes Administrator" course and stuck on deploying simple app. I think trouble is even earlier than with app deployment. I've created master and worker, seems that they are ok: $ kubectl get nodes NAME…
Dmitriy Vinokurov
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Extend VMware persistent volume in Kubernetes

How to extend VMware persistent volume (PV/PVC) with Kubernetes's VMwware in-tree driver ? (using Rancher 2.5 with VMware/vSphere cloud provider, and Kubernetes 1.18) I created a storageclass with the following UI options: Provider: VMWare vSphere…
Franklin Piat
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How to manage Domain DNS with Kubernetes Cluster

I would like to setup a Kubernetes Cluster with two master nodes and 5 simple nodes. Every nodes is dedicated server on Linux. I will setup two load balancer HAProxy server in front of them (On on Asia and One in EU managed by DNS Anycast). My…
user623157
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K8s failed Job keeps running (Duration counting up)

I defined a test job: apiVersion: batch/v1 kind: Job metadata: name: testjob spec: activeDeadlineSeconds: 100 backoffLimit: 3 template: spec: containers: - name: testjob image: bitnami/kubectl:1.20 …
adroste
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Kubernetes in RasPi 4B does not detect RAM

I'm trying to set up a Kubernetes cluster on a bunch of Raspberry Pi 4B nodes. I adopted the setup I use for my v-kube-cluster (Kubernetes in virtual boxed using vagrant). See https://github.com/sebastian9486/v-kube-cluster (but not essential to my…
Sebastian Sommerfeld
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