Hot Standby Key Functions
In this chapter, we'll cover the key functions that make a hot standby configuration in anynode effective, ensuring high availability between primary and standby instances.
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We begin with the Status Overview, where you can check which system is currently active and if the connection is stable or has issues. This is important for monitoring your anynode setup.
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Next, we discuss Hot Standby Conditions. From version 4.12 onwards, you can add more conditions as needed, even after setup.
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In Role Handover and Recovery, we'll explore settings that determine when the main system should be active or go into standby, especially during scenarios like system updates. These settings help manage when a system assumes or relinquishes its active role.
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Finally, we'll look at Communication Parameters and Timer Settings, which control the timing and stability of the network link between systems, including retry timeouts and ping intervals. Correct configuration of these settings ensures reliable communication and minimizes disruptions.
This chapter provides a concise guide to understanding and managing these key functions for a stable hot standby configuration in anynode.