Recently we got similar/same issue and it was solved using the following approach from the AppDynamics helpdesk: Problem statement: Machine Agent problem installation related to temp directory   This issue is typically caused by a noexec flag set on the temporary directory.    To resolve the issue please follow the steps: Create a directory called "tmp" in the MA home, the MA should have write permission on that directory. Run the command below (notice that we add the "-Djava.io.tmpdir" property, it will change the tmp dir that the MA use) nohup /opt/appdynamics/machine-agent/jre/bin/java -Djava.io.tmpdir=/opt/appdynamics/machine-agent/tmp -jar /opt/appdynamics/machine-agent/machineagent.jar & ... View more

@Andrew.Gorham May be too late to reply, but I think it means Automatic Leak Detection.  ... View more