Summary

An exception is seen on the Bamboo User Interface while trying to download the remote agent JAR file and the below exception is seen:

io.atlassian.util.concurrent.LazyReference$InitializationException: java.lang.RuntimeException: Unexpected exception
at io.atlassian.util.concurrent.LazyReference.getInterruptibly(LazyReference.java:156)
Caused by: java.io.FileNotFoundException: C:\BAMBOO_HOME\caches\classpath.zip (Access is denied)
at java.io.FileOutputStream.open0(Native Method)

Environment

Issue seen on Bamboo 8.0.5 but might be applicable for any supported version. 

Diagnosis

The issue is seen while trying to download the remote agent jar in Bamboo via Bamboo Administration > Agents > Install remote agent > download remote agent JAR page.

The below error is seen on the Bamboo page and <bamboo-home>/atlassian-bamboo.log file

io.atlassian.util.concurrent.LazyReference$InitializationException: java.lang.RuntimeException: Unexpected exception
at io.atlassian.util.concurrent.LazyReference.getInterruptibly(LazyReference.java:156)
Caused by: java.io.FileNotFoundException: C:\BAMBOO_HOME\caches\classpath.zip (Access is denied)
at java.io.FileOutputStream.open0(Native Method)

Cause

There are possible 2 causes

1. The user account running Bamboo does not have read/write access to the caches folder under <bamboo-home>.
2. There is already classpath.zip file present inside <bamboo-home>/caches folder and this file does not have read/write access to the user which is running Bamboo. 

Solution

Option 1:

1. The first step is to make sure the user which is running Bamboo has full read and write access to <bamboo-home>/caches folder

2. In the second step clear the contents of <bamboo-home>/caches folder and restart Bamboo and then try to download the jar again.

   Please make sure to take backup of the above folder before deleting the content inside as it might be required in case of rolling back this change.

Option 2:

You can copy the remote agent installer by following the below steps:

1. Copy the remote agent jar from path <bamboo-install>/atlassian-bamboo/admin/agent/atlassian-bamboo-agent-installer-VERSION.jar on the Bamboo server.
2. Place the remote agent JAR on the machine where you want to run the remote agent.

3. Run the JAR file with the command provided by your Bamboo instance.

   Bamboo remote agent installation giude