Kubernetes: Apps and pods
A Pod is the smallest deployable units of computing in a Kubernetes environment. A pod can host just one application (container) or several. Let us see if there are any pods running in the default…
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Kubernetes: NameSpace
The namespaces in Kubernetes provides a way for separating groups of resources hosted within a single cluster. While the default namespace where all the pods and applications get hosted is in the “default” namespace, the…
Kubernetes: Basic commands
Once the installation of Kubernetes cluster is competed, let us go with the basic commands. The below command lists the pods running on the cluster. Remember that there are several services used by Kubernetes already…
Linux Pacemaker – the new HA (High Availability)
In the world of running critical application, where we cannot afford downtime caused by hardware failures, it becomes necessary to run cluster of hardware, where the application can be automatically migrated to another running hardware,…
Docker Swarm: Introduction and basics
A docker instance is good to run task in a small scale. However as the traffic increases, or when more processing power is required, when we want to scale-up the infrastructure, the way to move…
Installing Distributed Replicated Block Device – DRBD in CentOS 7
Distributed Replicated Block Device commonly called as DRBD is a distributed replicated storage system. This is used in Linux platform. It is a distributed replication (RAID 1) via network. Listed below are the steps involved…