High Availability

kron pam provides an active active high availability architecture in which multiple instances operate concurrently as part of the same ha deployment this architecture provides redundancy and enables the system to continue operating in the event of an instance failure while the instances operate in an active active configuration, certain system jobs and processes are executed only by the designated master instance if the master instance becomes unavailable, the master role is automatically transferred to another available instance in the cluster the newly promoted master takes responsibility for the master specific jobs and processes, allowing system operations to continue without requiring manual intervention there are two types of clusters for the watchdog mechanism watchdogs running in an environment without the controller unit watchdogs running in an environment with the controller unit each environment consists of master and member instances the master instance runs extra jobs related to sapm and ldap management a parameter defined in the kron pam database determines which instance becomes the master and can be changed if needed this architecture provides fault tolerance and rapid recovery from instance failures through built in redundancy and automatic failover mechanisms