KB-2186 "Infrastructure: Environment Removed" email received but no users report removing the connected environment

Symptoms

System Administrators receive an email that reads, "An environment in your infrastructure has been removed", but no system administrators report removing the configuration. 

Additionally, the user who set up the connection is logged in the devops_infrastructure.csv log as the user who removed the connection. An HTTP 404 is also observed at /suite/devops-infrastructure/handlers in the tomcat-access.log of the remote environment:

YYYY-MM-DD HH:MM:SS /suite/devops-infrastructure/handlers - 404 X.XXX

Cause

This issue has been hotfixed via AN-190319 in the following versions:

• 20.4.1095.0
• 21.1.820.0
• 21.2.530.0
• 21.3.245.0
• 21.4 GA and later

With this fix, when Appian receives a HTTP 404 at the /suite/devops-infrastructure/handlers url, Appian will automatically disable the connected environment instead of removing it.

Workaround

Re-add the connected environment in the Admin Console.

Action

Apply the latest hotfix to your Appian installation or upgrade to the latest version of Appian.

Affected Versions

This article applies to Appian 19.1 through Appian 21.4.

Last Reviewed: October 2021