What is Terraform? Terraform is a tool you can use to “sync” your infrastructure (VMs in Clouds, DNS records, etc.) with code you have written in configuration files. This is known as Infrastructure as Code. Knowing that your infrastructure is exactly what you expect it to be can simplify your operations significantly. You…

The Red Hat OpenStack Platform (RHOSP) director is a toolset for installing and managing a complete RHOSP environment. Director is based primarily on the OpenStack project TripleO. With director you can install a fully operational, lean, and robust RHOSP environment that can provision and control baremetal systems to use as…

This is part 3 of Getting Started VMware Tanzu Community Edition Set Up vSphere CNS and Create a Storage Policy in vSphere vSphere administrators can set up vSphere CNS and create storage policies for virtual disk (VMDK) storage, based on the needs of workload cluster users. You can use either vSAN or local VMFS (Virtual Machine File System) for persistent storage…

This is part 2 of Getting Started VMware Tanzu Community Edition Deploy a Management Cluster to vSphere Initialize the Tanzu Community Edition installer interface to deploy a management cluster. The installer interface launches in a browser and takes you through the steps to configure the management. The input values are saved in: ~/.config/tanzu/tkg/clusterconfigs/cluster-config.yaml. 1. On the…

VMware Tanzu Community Edition is a full-featured, easy to manage Kubernetes platform for learners and users. It is a freely available, community supported, open source distribution of VMware Tanzu that can be installed and configured in minutes on your local workstation or your favorite cloud. This is part 1 of…

DRBD®– software is a distributed replicated storage system for the Linux platform. It is implemented as a kernel driver, several userspace management applications, and some shell scripts. DRBD Heartbeat cluster is a good Active/Passive cluster solution for small-scale applications using two servers in active and passive mode. This means, only…

The Ceph File System (CephFS) is a file system compatible with POSIX standards that are built on top of Ceph’s distributed object store, called RADOS (Reliable Autonomic Distributed Object Storage). CephFS provides file access to a Ceph cluster and uses the POSIX semantics wherever possible. For example, in contrast to…

Pool deletion fails with the following error: Error EPERM: pool deletion is disabled; you must first set the mon_allow_pool_delete config option to true before you can destroy a pool Administrators will need to set the mon_allow_pool_delete configuration option before deleting pools. Perform the following operations from leader MON node if…

A block is a set length of bytes in a sequence, for example, a 512-byte block of data. Combining many blocks together into a single file can be used as a storage device that you can read from and write to. Block-based storage interfaces are the most common way to…