Cluster Manager

The DataReel cluster manager (DRCM) software is used to build high availability Linux server clusters. High availability clusters manage system resources with automatic fail over in event of one or more server failures.

The DRCM project was designed to support multiple cluster nodes in a non-hierarchical arrangement. Cluster resources are distributed between the nodes with backup rolls assigned. The DRCM project requirements were based on the need to replace existing cluster software with multiple dependency issues and cluster software that did not scale well more than 2 cluster nodes.

A Linux server cluster is typically 2 servers with equal capacity, where one server provides primary services and the other server provides backup services. In the event of a primary server failure the secondary server automatically assumes all cluster resources. In data centers utilizing virtualization technology, services are distributed between many virtual machines (VMs). In a VM environment clustering multiple VM nodes running on multiple bare metal servers is a very effective way to manage services in the event of a bare metal server failure.

The DRCM multiple node concept can scale between nodes in one or more data centers in the same or different geographical locations.

Online documentation

Latest pre-built RPMs:

RHEL7/CENTOS7:
https://github.com/datareel/ha-cluster-manager/releases/download/1.37/drcm_server-1.37-1.el7.x86_64.x86_64.rpm
sha256sum: 8bc4f7230937806cd799577840d7f10fdef0d594b94061bc273360376ec5a4bf

RHEL6/CENTOS6:
https://github.com/datareel/ha-cluster-manager/releases/download/1.37/drcm_server-1.37-1.el6.x86_64.x86_64.rpm
sha256sum: b67a2ed72bf69279bd7cd71c64d85dffeb5d9a95164381ca98385d166885ef6a

Source code repository

Transition from heartbeat to DRCM