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Título
Change Auditor Redundancy -
Descrição
How to set up redundancy with Change Auditor?
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Causa
N/A -
Resolução
Fault Tolerance (FT) / High Availability (HA) is native to Change Auditor.
- It is inherently built-in and there is nothing to configure.
- Each component in the Change Auditor architecture is specifically designed with high availability (FT/FailOver) as a goal.
Database
- There is only one SQL Database, which is typically hosted on a Microsoft SQL server cluster.
Coordinator-
CA support multiple Coordinator which work together and add redundancy without added configuration.
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In case of catastrophic failure on a Coordinator, the Agents will simply switch to another.
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Multiple Coordinators are not often deployed as in the case of a major server failure, only a few minutes will be need to deploy a new one without any data loss
Agent
- Agents discover the Coordinator(s) via Service Connection Point (SCP) at start.
- If one Coordinator is unavailable, the Agent switches to another till none is available.
- If all Coordinators are unreachable, the Agent will stop attempting to send data and will start storing data in a local Database file which can grow up to 3GB at most.
- This allow for Coordinator outage going for period from hours to month depending on which type of events are collected.
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Once communications resume, the agent will begin forwarding its queued events in a controlled fashion.