Kubernetes is one of the effective container orchestration platforms that automatically deploys, scales, and manages containerized applications. After we have seen how to install Kubernetes on Windows, here are the top three tips that I prefer when using Kubernetes: Understand the Basics: Pods: Smal...
Kubernetes component certificates have a 1 year duration and are rotated during cluster update. However, if the cluster has not been upgraded then the certs will need to be rotated manually. To check expiration date on kubernetes component certificates: ssh capv@CONTROL-PLANE-IP sudo -i kubeadm...
Just use regular Kubernetes RBAC to create a role that gives only the privileges you wish and assign that role to a user or group. Then create another role to impersonate the user or group with that particular role. [ Want to test your sysadmin skills?Take a skills assessment today. ] ...
Disable SELinux: SELinux does not allow containerized processes to mount all of the file systems required to run inside a container. So we need to disable SELinux on the host that is running the Kubernetes cluster. To be able to mount a device in Kubernetes, you first have to create a ...
Before Kubernetes version 1.6, theOnDeleteupdate strategy was the only way to update pods managed by a DaemonSet. This approach required users to delete each pod manually before the DaemonSet could create a new pod using the new configuration. ...
3. Check a running installation You can also check a running installation to determine which version of Docker is being used. To do this, you need to use the docker version command; the Server line will indicate the version being used. Docker Desktop on macOS Arm64 The Server: Docker Deskt...
Check whether the capacity is expanded. # lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 50G 0 disk └─sda1 8:1 0 50G 0 part /sdb8:16 0 150G 0 disk ├─vgpaas-dockersys253:0 0 140G 0 lvm /var/lib/containerd └─vgpaas-kubernetes 253:1 0 10G 0 lvm /mnt/paas...
Perfect, now check nodes status again, Great, above confirms that master and worker nodes are in ready staate. Now, we can say our cluster ready handle workload. 9) Test Kubernetes Cluster Installation In order validate and test Kubernetes cluster installation, let’s try to deploy nginx base...
kubernetes.io/service-account.name: api-service-account Then, create the secret by running the following command. kubectl apply -f sa-token.yaml Once the secret is created, use the following command to get the base64 decoded token. It will be used as a bearer token in the API call. ...
Check out theKubernetes Architecture guideto learn about all the Kubernetes components in detail. Overall you need to learn the following. Control plane components:Understand the role of each component like API server, etcd, Scheduler, and Controller manager. ...