RESEARCH

apache zookeeper – Kafka behavior during partition leader shutdown and how to reduce downtime during partition leader re-election

I’m conducting tests to analyze Kafka (with Zookeeper) cluster behavior during intentional broker shutdowns within a Kubernetes environment. Our Kafka setup includes 3 brokers, with a topic configuration of 1…Read moreapache zookeeper – Kafka behavior during partition leader shutdown and how to reduce downtime during partition leader re-election

DATA MANAGEMENT RESEARCH

ubuntu – Resolving WARNING about deprecated version information in kubectl (x86-64)

WARNING: This version information is deprecated and will be replaced with the output from kubectl version –short.  Use –output=yaml|json to get the full version. Client Version: version.Info{Major:”1″, Minor:”27″, GitVersion:”v1.27.2″, GitCommit:”7f6f68fdabc4df88cfea2dcf9a19b2b830f1e647″, GitTreeState:”clean”,…Read moreubuntu – Resolving WARNING about deprecated version information in kubectl (x86-64)

RESEARCH VIRTUALIZATION

kubernetes – how to resolve minikube start error : This computer doesn’t have VT-X/AMD-v enabled. Enabling it in the BIOS is mandatory

Those “VT-X/AMD-v” are instructions that need to be enabled, nowadays, running virtualization software such as VirtualBox. Short answer: as suggested by the error message, those instructions are unavailable. Either because…Read morekubernetes – how to resolve minikube start error : This computer doesn’t have VT-X/AMD-v enabled. Enabling it in the BIOS is mandatory

RESEARCH

Bug #2008644 “error from create_kubeconfig when kubectl snap is …” : Bugs : Kubernetes Control Plane Charm

After a recent “juju config k-c-p channel=1.27/edge”, i noticed an error in my non-leader k-c-p unit (log with context attached): ——2023-02-17 23:07:23 INFO unit.kubernetes-control-plane/0.juju-log server.go:316 Writing kubeconfig file.2023-02-17 23:07:23 ERROR…Read moreBug #2008644 “error from create_kubeconfig when kubectl snap is …” : Bugs : Kubernetes Control Plane Charm

DATA MANAGEMENT RESEARCH

kubernetes – How to run kubectl commands inside docker container cron job

1.kubectl commands giving response in container terminal and getting cluster-info. [root@cronjob-cj-m1dr3tsda-aw5rv /]# kubectl cluster-info Kubernetes control plane is running at 172.20.0.1:443 CoreDNS is running at 172.20.0.1:443/api/v1/namespaces/kube-system/services/kube-dns:dns/proxy 2.We have crontab running…Read morekubernetes – How to run kubectl commands inside docker container cron job

RESEARCH

software installation – There is no config file when I install “kubeadm/kubelet/kubectl” via “apt” or “snap” on Ubuntu 22.04LTS!

I just installed Kubernetes following this instruction: kubernetes.io/docs/setup/production-environment/tools/kubeadm/install-kubeadm/ on my Ubuntu desktop 22.04 LTS. When I try this command sudo kubectl cluster-info for example, I get this result: To further…Read moresoftware installation – There is no config file when I install “kubeadm/kubelet/kubectl” via “apt” or “snap” on Ubuntu 22.04LTS!

RESEARCH

kubernetes – Kubectl client and server version mismatch

I have installed kubectl cli and minikube v1.21.0 version. Below is how it looks: minikube version minikube version: v1.21.0 commit: 76d74191d82c47883dc7e1319ef7cebd3e00ee11 kubectl version Client Version: version.Info{Major:”1″, Minor:”21″, GitVersion:”v1.21.0″, GitCommit:”cb303e613a121a29364f75cc67d3d580833a7479″, GitTreeState:”clean”,…Read morekubernetes – Kubectl client and server version mismatch