Managed Kubernetes Prerequisites

The article describes the prerequisites for preparing a pool of x86 (64-bit) nodes (machines) for Platform9 Managed Kubernetes.

Once the nodes are provisioned, you can create multiple Kubernetes clusters. A node can be detached from or attached to one cluster at a time.

Although a Kubernetes cluster can be as small as one node, Platform9 recommends a minimum of two or three nodes per cluster.

Platform9 supports the node operating systems, CentOS(64-bit), RHEL 7.2+ (64-bit), and Ubuntu LTS 16 (64-bit).

Prerequisites

The prerequisites can be classified into operating system related prerequisites, disk space prerequisites, RAM prerequisites, networking prerequisites, and miscellaneous prerequisites.

Operating System related prerequisites

Following are the operating system related prerequisites.

Update CentOS/RHEL

For CentOS or RHEL 7, run the following command to update all the packages.

yum update

Read the related document Preparing a CentOS or RHEL 7 system for running Platform9 Managed Kubernetes for further instructions on preparing a CentOS or RHEL 7 node.

Update Ubuntu

For Ubuntu, run the following command to update all the packages.

 apt-get upgrade

Disk Space Prerequisites

RAM Prerequisites

The recommended RAM requirements are a minimum of 16 GB of RAM and 1 core per 4 GB of RAM.

Networking Prerequisites

Miscellaneous Prerequisite

Swap must be disabled on the host. To disable swap, refer to Disabling Swap on a Kubernetes Node.


May 06, 2016