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.
2,872 questions
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How to get kubernetes to add all its internal DNS entries to our DNS server
I have a PowerDNS server running in my cluster.
I would like Kubernetes to add/update DNS entries in the DNS server to reflect all services or any domains that would be used within the cluster.
This ...
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How can I resolve mbind: Operation not permitted in MySQL/Percona XtraDB containers on Kubernetes when all capabilities are dropped?
I’m running MySQL (and Percona XtraDB) in Kubernetes under a very restrictive securityContext:
securityContext:
allowPrivilegeEscalation: false # no new privileges
capabilities:
drop:
...
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Forward Kubernetes configmap environment variables to pod internal SSH server
I have created a pod using RHEL9 ubi9-init image. I added envFrom term in the K8s yaml file for the pod that imports environment variables from the K8s configmap. The running pod /proc/1/environ has ...
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Forcing an init Container to terminate after 30 seconds
I am trying to setup a deployment for wireguard using image linuxserver/wireguard:latest
Now, my volume mount for config is still empty and I would like that on initialisation i populate it by default ...
- 219
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Where can I find Kubernetes webhook logs?
I am writing a K8S webhook that modifies a deployment object to add some environment variables.
In K8S Dynamic Admission Control docs, the API shows status object with code and message like this:
{
&...
- 101
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Can't install SecretProiderClass CRD in AWS EKS
In my AWS EKS Cluster, I need to access a secret in my AWS SecretManager. To that end, I'm trying to apply a SecretProviderClass that looks like:
apiVersion: secrets-store.csi.x-k8s.io/v1
kind: ...
- 113
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pods with ipv6 addresses cannot be accessed via ipv6 on nodes k8s/calico environment
I tried to add ipv6 to the k8s cluster, ipv6 already added, but the issue is that the pod is not accessible through ipv6 by the node where the pod resides, but it is accessible through ipv4, the ...
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Can i Set the change-casue while applying in the [kubectl rollout undo deployment nginx]
kubectl rollout undo deployment nginx
i found the manual entire to set description is there any command to set desc.
kubectl annotate deployment nginx
kubernetes.io/change-cause="Rolled back to ...
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Kubespray Calico Controller, CoreDNS and DNS Autoscaler cannot find host
I am trying to use Kubespray to create a kubernetes cluster on three nodes. This is currently resulting in the Calico Kube Controller, CoreDNS and DNS Autoscaler nodes crashing because they cannot ...
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How to best define in ArgoCD reusable ClusterRole for different namespaces and jobs?
I have the same Job as a bash script that needs to check for multiple different applications that need storage whether storage application is running already.
What would be the best-practice be, with ...
- 484
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Helm Install Error of Flux Operator: No matches for kind FluxInstance in version fluxcd.controlplane.io/v1
I am trying to install Flux Operator using Helm install from the docs here
helm install flux-operator oci://ghcr.io/controlplaneio-fluxcd/charts/flux-operator \ --namespace flux-system
Note: I have ...
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121
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Preventing HPA Auto-Scaling during Kubernetes deployments when using custom metrics
We have an app that automatically sets up Kubernetes HPA to our customers.
We are now using metrics from Prometheus as targets to HPA. These metrics are exported from our Java applications using the ...
- 150
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How to ensure a rancher managed virtual machine will be assigned to a certain host?
I have a 4-node HarvesterHCI cluster up and running. One node is equipped with dedicated hardware (GPU) which is not present on the other 3 nodes. Rancher is installed as the management solution to ...
- 101
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CoreDNS in Kubernetes intermittent NXDOMAIN
We have a small selfhosted microk8s kubernetes cluster where CoreDNS (v1.6.6) provides the domain name resolution for the pods. A few days ago we run into the problem that some DNS request an ...
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Cilium API Gateway vs Envoy Gateway
I'm looking to replace my NGINX Ingress with either Cilium API Gateway or Envoy Gateway. I have a strict requirement for implementing maintenance windows using one of these tools. During a maintenance ...
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