I have a multi-architecture Kubernetes cluster across x86–64 and ppc64le platforms, and I need the Filebeat Docker image since I run the Elastic stack for log management. However, there is no official Docker image provided on ppc64le architecture, thus I have to build it myself. Here is how to do…

You may have application running inside OpenShift Container Platform, and that uses a Persistent Volume provisioned from vSphere VMDK. One day, when you find the disk becoming full and nothing could be cleaned up, the problem arise. How to directly expand the volume without losing any data? Suppose you have…

Recently, I need to help a customer to migrate the persistent storage of Image Registry for the OpenShift Container Platform cluster from VMDK block disk to NFS storage. Here are the steps that I have used to complete the migration. Step 1) Stop the Image Registry service Check that Image Registry is currently running with 1 replica. …

There were a few times the error “cudaErrorInitializationError with exit code 3” was hit when our team run CUDA application inside Docker container. (Depending on your code, you may see the error message “initialization error” instead.) However, if we check the system, nothing strange could be found. Moreover, nvidia-smi gives…

Recently I have to setup the Metering Operator inside a OpenShift cluster in order to collect usage data. The environment doesn’t offer any storage provisioner and static NFS provisioning is the only option. Install the Metering Operator Prepare the namespace-openshift-metering.yaml YAML file for namespace creation: apiVersion: v1 kind: Namespace metadata: name: openshift-metering annotations…

Not long ago, I was required to setup a pair of Highly Available NFS Cluster with disk encryption. I turned out setting up the cluster using: CentOS 8 Stream LUKS DRBD Corosync and Pacemaker A) Preparations Setup two CentOS 8 Stream VMs. In this article, each VM will have two disks named…