Kubernetes - Kubernetes is an open source orchestration system for Docker containers
xCAT - xCAT is an open-source distributed computing management software used for the deployment and administration of Linux or AIX based clusters.
Google Site Reliability Engineering - How Google runs production systems
oneSIS - oneSIS is an open-source software package aimed at simplifying diskless cluster management.
Ganeti - Ganeti is a cluster management tool built on top of existing virtualization technologies.
Puppet Enterprise - Get started with Puppet Enterprise, or upgrade or expand.