This document provides an introduction to the Cray System Management (CSM) installation documentation for an HPE Cray EX system.
The CSM installation prepares and deploys a distributed system across a group of management nodes organized into a Kubernetes cluster which uses Ceph for utility storage. These nodes perform their function as Kubernetes master nodes, Kubernetes worker nodes, or utility storage nodes with the Ceph storage.
System services on these nodes are provided as containerized micro-services packaged for deployment as helm charts. These services are orchestrated by Kubernetes to be scheduled on Kubernetes worker nodes with horizontal scaling to increase or decrease the number of instances of some services as demand for them varies, such as when booting many compute nodes or application nodes.
There is much more information available in the CSM Overview about the hardware, software, network, and access to these services and components.
See CSM Overview
These scenarios for how to get CSM software onto a system are described in Scenarios for Shasta v1.5.
Note: A migration from Shasta v1.3.x software to Shasta v1.5 software is not supported as a direct action, but is a two step process of first migrating from Shasta v1.3.x to Shasta v1.4 and then following the Upgrade procedure from v1.4 to v1.5.
The software included in the CSM product stream is released in more than one way. The initial product release may be augmented with late-breaking workarounds and documentation updates or hotfixes after the release.
See CSM Product Stream Updates
Procedures which are used during either installation or upgrading of software or in both, but which may also be used for general operation of the system reside here. They are referenced in the context of the installation workflow. For example, updating firmware with FAS or running the CSM health checks.
See CSM Operational Activities
Significant changes from the previous release of CSM are described.
See Differences from Previous Release
Several conventions have been used in the preparation of this documentation.