Engine Restart Script

Beginning with Appian 25.4, all new versions of Appian will require containers managed by Kubernetes to run in a self-managed environment. Review the 24.4 release notes and frequently asked questions to learn more.

Purpose

Tip: All highly-available sites automatically restart engines during checkpointing given the proper, safe conditions to do so.

The engine restart script allows you to restart an Appian engine safely while the site is running in a High Availability configuration. This allows you to free up memory that has been reserved but is not currently used by the engine.

If you still need to run this script between automatic engine restarts, Appian recommends running this script on the server hosting the primary engine in a High Availability configuration (use the Status Script to determine the primary engine). Restarting the primary engine frees up the most memory, but it can be used on replicas as well, to lesser effect. This script only runs on one engine at a time.

Location

<APPIAN_HOME>/services/bin/engineRestart.sh (.bat)

Options

Short Name	Long Name	Required	Meaning
-h	--help	No	Show usage information
-p	--password	Yes	Password for Admin REST API
-s	--service	Yes	The service to restart. See below for values.

Available values for the --service parameter: analytics00…analytics31, channels, content, download-stats, execution00…execution31, forums, groups, notifications, notifications-email, portal, process-design.

Usage

./engineRestart.sh -p <password> -s execution00

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