packer/website/source/docs/other/environmental-variables.html.markdown

layout	page_title	description
docs	Environmental Variables for Packer	Packer uses a variety of environmental variables.

Environmental Variables for Packer

Packer uses a variety of environmental variables. A listing and description of each can be found below:

• PACKER_CACHE_DIR - The location of the packer cache.

• PACKER_CONFIG - The location of the core configuration file. The format of the configuration file is basic JSON. See the core configuration page.

• PACKER_LOG - Setting this to any value will enable the logger. See the debugging page.

• PACKER_LOG_PATH - The location of the log file. Note: PACKER_LOG must be set for any logging to occur. See the debugging page.

• PACKER_NO_COLOR - Setting this to any value will disable color in the terminal.

• PACKER_PLUGIN_MAX_PORT - The maximum port that Packer uses for communication with plugins, since plugin communication happens over TCP connections on your local host. The default is 25,000. See the core configuration page.

• PACKER_PLUGIN_MIN_PORT - The minimum port that Packer uses for communication with plugins, since plugin communication happens over TCP connections on your local host. The default is 10,000. See the core configuration page.