The PATH environment variable is not set properly on the master. I have tried configuring the PATH variable in:

• the Manage Jenkins -> Configure System -> Global Properties.
• and in the Node Properties -> Environment variables section on the master node Configure screen.

With a simple job that is tied to the master node and prints the PATH variable, I see only a default-looking PATH=/sbin:/usr/sbin:/bin:/usr/bin.

The job does properly print other environment variables that I have configured on the master.

I recently upgraded from 1.498 to 1.517 along with many plugins, including EnvInject 1.78 to 1.87. This was not a problem with my previous installation.

Downgrading from EnvInject 1.87 to 1.78 resolved the problem.