The following sections briefly describe some of the common deployment scenarios that are addressed by ESC.
Cisco Elastic Services Controller can be installed in different modes as per the requirement. These different modes are configured during installation. The following sections briefly describe some of the common deployment scenarios that are addressed by ESC.
In the standalone scenario, a single active VM is deployed for ESC.
ESC with HA
ESC supports High Availability (HA) in the form of a Primary and Standby model. Two ESC instances are deployed in the network to prevent ESC failure and to provide ESC service with minimum interruption. If the primary ESC instance fails, the standby instance automatically takes over the ESC services. ESC HA resolves the following single point failures of ESC:
Dead VM instance
Internal application failures
For more information on deploying ESC HA, see 'Configuring High-Availability' in Installing ESC on OpenStack and Installing ESC on VMware chapters.