kubed | ️ A Kubernetes Cluster Daemon | Continuous Deployment library
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Kubed (pronounced Cube-Dee) by AppsCode is a Kubernetes Cluster Operator Daemon. Kubed can do the following things for you:.
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QUESTION
I've googled few days and haven't found any decisions. I've tried to update k8s from 1.19.0 to 1.19.6 In Ubuntu-20. (cluster manually installed k81 - master and k82 - worker node)
...ANSWER
Answered 2022-Jan-28 at 10:13The solution for the issue is to regenerate the kubeconfig file for the admin:
QUESTION
I have a kubernetes cluster containing (amongst others) a jupyterhub pod and a postgresql pod as its database. Everything worked fine for months until a recent incident where a shared storage ran full; the resulting file system warnings forced the connected linux machines (including this cluster node) into a read-only status. Now, that and all other issues resulting from it so far could be fixed; the nodes and pods all seem to start up fine, but the jupyterhub pod alone runs into a CrashLoopBackoff, because it can for some reason no longer connect to the database service/pod.
Here are the logs from the relevant pods I've gathered so far. I've redacted the username and password for obvious reasons, but I have checked that they align between the pods. And as said, I haven't changed the configuration and the system ran fine before the incident.
...ANSWER
Answered 2022-Jan-22 at 20:28After tracing the issue back to the kube-dns pods, I restarted them. This fixed this issue, though I still don't know why it occured.
QUESTION
Our system runs on GKE in a VPC-native network. We've recently upgraded from v1.9 to v1.21, and when we transferred the configuration, I've noticed the spec.template.spec.affinity.nodeAffinity in out kube-dns deployment is deleted and ignored. I tried manually adding this with "kubectl apply -f kube-dns-deployment.yaml"
I get "deployment.apps/kube-dns configured", but after a few seconds the kube-dns reverts to a configuration without this affinity.
This is the relevant code in the yaml:
...ANSWER
Answered 2022-Jan-12 at 21:03kube-dns is a service discovery mechanism within GKE, and the default DNS provider used by the clusters. It is managed by Google and that is why the changes are not holding, and most probably that part of the code was removed in the new version.
If you need to apply a custom configuration, you can do that following the guide Setting up a custom kube-dns Deployment.
QUESTION
Im trying create wildcard cert on Rancher kubernetes engine behind cloud loadbalancer. After install rancher i have a Issuer:
...ANSWER
Answered 2021-Sep-21 at 18:56As it is written here serving-a-wildcard-to-ingress, http01 solver does not support wildcard. Instead you should use dns01 for wildcard certificates.
See documentation to dns01 solver.
QUESTION
Why kubectl cluster-info is running on control plane and not master node And on the control plane it is running on a specific IP Address https://192.168.49.2:8443 and not not localhost or 127.0.0.1 Running the following command in terminal:
- minikube start --driver=docker
😄 minikube v1.20.0 on Ubuntu 16.04 ✨ Using the docker driver based on user configuration 🎉 minikube 1.21.0 is available! Download it: https://github.com/kubernetes/minikube/releases/tag/v1.21.0 💡 To disable this notice, run: 'minikube config set WantUpdateNotification false'
👍 Starting control plane node minikube in cluster minikube 🚜 Pulling base image ... > gcr.io/k8s-minikube/kicbase...: 358.10 MiB / 358.10 MiB 100.00% 797.51 K ❗ minikube was unable to download gcr.io/k8s-minikube/kicbase:v0.0.22, but successfully downloaded kicbase/stable:v0.0.22 as a fallback image 🔥 Creating docker container (CPUs=2, Memory=2200MB) ... 🐳 Preparing Kubernetes v1.20.2 on Docker 20.10.6 ... ▪ Generating certificates and keys ... ▪ Booting up control plane ... ▪ Configuring RBAC rules ... 🔎 Verifying Kubernetes components... ▪ Using image gcr.io/k8s-minikube/storage-provisioner:v5 🌟 Enabled addons: storage-provisioner, default-storageclass 🏄 Done! kubectl is now configured to use "minikube" cluster and "default" namespace by default
- kubectl cluster-info
Kubernetes control plane is running at https://192.168.49.2:8443 KubeDNS is running at https://192.168.49.2:8443/api/v1/namespaces/kube-system/services/kube-dns:dns/proxy
...To further debug and diagnose cluster problems, use 'kubectl cluster-info dump'.
ANSWER
Answered 2021-Jun-15 at 12:59The Kubernetes project is making an effort to move away from wording that can be considered offensive, with one concrete recommendation being renaming master to control-plane. In other words control-plane and master mean essentially the same thing, and the goal is to switch the terminology to use control-plane exclusively going forward. (More info in this answer)
The kubectl command is a command line interface that executes on a client (i.e your computer) and interacts with the cluster through the control-plane.
The IP address you are seing through cluster-info is the IP address through which you reach the control-plane
QUESTION
I am having problems trying to get communication between two services in a kubernetes cluster. We are using a kong ingress object as an 'api gateway' to reroute http calls from a simple Angular frontend to send it to a .NET Core 3.1 API Controller Interface backend.
In front of these two ClusterIP services sits an ingress controller to take external http(s) calls from our kubernetes cluster to launch the frontend service. This ingress is shown here:
...ANSWER
Answered 2021-Apr-08 at 06:22Chris,
I haven't used linode or kong and don't know what your frontend actually does, so I'll just point out what I can see:
The simplest dns check is to curl (or ping, dig, etc.):
- http://[dataapi's pod ip]:80 from a host node
- http://[kong-proxy svc's internal ip]/dataapi/api/values from a host node (or another pod - see below)
default path matching on nginx ingress controller is pathPrefix, so your nginx ingress with path: / and nginx.ingress.kubernetes.io/rewrite-target: / actually matches everything and rewrites to /. This may not be an issue if you properly specify all your ingresses so they take priority over "/".
you said 'using a kong ingress as a proxy to redirect incoming', just want to make sure you're proxying (not redirecting the client).
Is chrome just relaying its upstream error from frontend-service? An external client shouldn't be able to resolve the cluster's urls (unless you've joined your local machine to the cluster's network or done some other fancy trick). By default, dns only works within the cluster.
cluster dns generally follows [service name].[namespace name].svc.cluster.local. If dns cluster dns is working, then using curl, ping, wget, etc. from a pod in the cluster and pointing it to that svc will send it to the cluster svc ip, not an external ip.
is your dataapi service configured to respond to /dataapi/api/values or does it not care what the uri is?
If you don't have any network policies restricting traffic within a namespace, you should be able to create a test pod in the same namespace, and curl the service dns and the pod ip's directly:
QUESTION
I'm facing an interesting challenge, I'm trying to run kubectl in a docker image with a proper configuration, to reach my cluster.
I've been able to create the image, kubecod
ANSWER
Answered 2021-Apr-27 at 13:37The answer is that
QUESTION
Below is the output:
...ANSWER
Answered 2021-Feb-21 at 10:56Both assumptions are correct.
It's running in a VM, a VM which is running in your PC and exposing the Kubernetes API so that you can access it with kubectl without needing to get into the VM.
QUESTION
I installed minikube in a remote computer. The service is up and the configuration looks ok:
...ANSWER
Answered 2020-Nov-20 at 11:18There could be plenty of reasons for that. You may just need to:
QUESTION
How can I grep the nodeport which is the "31000" under the PORT(S) , it can and will change, from the following kubernetes command output:
...ANSWER
Answered 2020-Nov-04 at 18:38kubecmd | awk -F[:] 'NR>1 { split($2,arr,"/");print arr[1]}'
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