49 lines
2.2 KiB
Markdown
49 lines
2.2 KiB
Markdown
---
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description: 'Packer uses a variety of environmental variables.'
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layout: docs
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page_title: 'Environment Variables - Other'
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sidebar_current: 'docs-other-environment-variables'
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---
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# Environment Variables for Packer
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Packer uses a variety of environmental variables. A listing and description of
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each can be found below:
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- `PACKER_CACHE_DIR` - The location of the packer cache.
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- `PACKER_CONFIG` - The location of the core configuration file. The format of
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the configuration file is basic JSON. See the [core configuration
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page](/docs/other/core-configuration.html).
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- `PACKER_LOG` - Setting this to any value other than "" (empty string) or "0" will enable the logger. See the
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[debugging page](/docs/other/debugging.html).
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- `PACKER_LOG_PATH` - The location of the log file. Note: `PACKER_LOG` must be
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set for any logging to occur. See the [debugging
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page](/docs/other/debugging.html).
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- `PACKER_NO_COLOR` - Setting this to any value will disable color in
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the terminal.
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- `PACKER_PLUGIN_MAX_PORT` - The maximum port that Packer uses for
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communication with plugins, since plugin communication happens over TCP
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connections on your local host. The default is 25,000. See the [core
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configuration page](/docs/other/core-configuration.html).
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- `PACKER_PLUGIN_MIN_PORT` - The minimum port that Packer uses for
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communication with plugins, since plugin communication happens over TCP
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connections on your local host. The default is 10,000. See the [core
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configuration page](/docs/other/core-configuration.html).
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- `CHECKPOINT_DISABLE` - When Packer is invoked it sometimes calls out to
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[checkpoint.hashicorp.com](https://checkpoint.hashicorp.com/) to look for
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new versions of Packer. If you want to disable this for security or privacy
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reasons, you can set this environment variable to `1`.
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- `TMPDIR` (Unix) / `TMP` (Windows) - The location of the directory used for temporary files (defaults
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to `/tmp` on Linux/Unix and `%USERPROFILE%\AppData\Local\Temp` on Windows
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Vista and above). It might be necessary to customize it when working
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with large files since `/tmp` is a memory-backed filesystem in some Linux
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distributions in which case `/var/tmp` might be preferred.
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