Methods for quiescing a node
Quiesce is a process for cleanly taking a Pega Platform node out of service for maintenance or other activities.
When a node is being quiesced, active users are migrated to an active node when the quiescing node is no longer available.
You can quiesce a node by using one of the following methods:
- Immediate drain (default)
- Slow drain
You can use the AES, SMA, Network Operation Center (NOC) version of SMA, or high availability landing pages to quiesce a node. For more information about these management tools, see Cluster management.
You can also quiesce a node by using a REST API. For more details, see Pega API.
To switch the quiesce method from the default immediate drain to slow drain, change the value of the sessio/ha/quiesce/strategy setting in the prconfig.xml file to "slowDrain" and restart the node.