Cloud Platform 99

Kubernetes ( k8s ) is an open source system for managing containerized applications across multiple hosts, providing basic mechanisms for deployment, maintenance, and scaling of applications. The open source project is hosted by the Cloud Native Computing Foundation ( CNCF ). It groups containers that make up an application into logical units for easy management and discovery. Kubernetes builds upon 15 years of experience of running production workloads at Google, combined with best-of-breed ideas and practices from the community. K ubernete s is also known as k8s as there are 8 letters between 'k' and 's'. It follows a server client architecture where the server is known as master and the clients are known as workers. In this article we will use one master and three worker nodes to deploy the kubernetes cluster. From the master node we have to manage the cluster using two tools known as 'kubeadm' and 'kubectl'. Here is a simple architecture I

This type of deployment is mainly helpful for POC or demo where all required opensatck components can be integrated to see how their functionality will work. I have a KVM host installed with RHEL 7.5 having the following resources: [ root@kvmhost ~ ]# free -h                  total      used      free          shared    buff/cache   available Mem:       70G       57G      339M        234M       12G          12G Swap:      4.0G      734M    3.3G [ root@kvmhost ~ ]# cat /proc/cpuinfo | egrep processor processor       : 0 processor       : 1 processor       : 2 processor       : 3 processor       : 4 processor       : 5 processor       : 6 processor       : 7 processor       : 8 processor       : 9 processor       : 10 processor       : 11 processor       : 12 processor       : 13 processor       : 14 processor       : 15 [ root@kvmhost ~ ]# fdisk -l /dev/sda Disk /dev/sda: 898.3 GB, 898319253504 bytes, 1754529792 sectors