Configure Maintenance Mode
The Maintenance Mode in NCache's POR topology allows users to temporarily remove a node from the cluster for any reason, with the intention of adding it back later. The Stop for Maintenance option simplifies this process and ensures efficient cache management.
The user can enter a timeout period, which comprises the time period for which the state transfer is halted. Using this timeout value and flag, the user can configure if the node should be stopped gracefully. The Graceful Node down option means that the node should go down only after the completion of current tasks.
The purpose of this timeout is to establish the time frame after which if the node being removed does not join, it will be declared dead, and a regular node removal process will be initiated. The timeout can be set anywhere between 0 to 600 minutes, whereby '0' portrays infinity. Also, there should be a minimum of 2 nodes in a cluster to apply maintenance mode.
Note
- If another node goes down during maintenance mode, the entire cluster will exit Maintenance Mode.
- No other node can be joined to or removed from the cluster while Maintenance Mode is on.
In This Section
Stop for Maintenance Mode
Explains how to stop a node for Maintenance using the NCache Management Center.
Exit Maintenance Mode
Explains how to exit Maintenance Mode for a node that has Maintenance Mode started.
