Environment Variables

This is a list of all environment variables that can be used to modify the operation of the Chef Habitat Studio and Supervisor.

Variable	Context	Default	Description
`HAB_AUTH_TOKEN`	build system	no default	Authorization token used to perform privileged operations against the depot, e.g. uploading packages or keys.
`HAB_BINLINK_DIR`	build system	`/hab/bin`	Allows you to change the target directory for the symlink created when you run `hab pkg binlink`. The default value is already included in the `$PATH` variable inside the Studio.
`HAB_CACHE_KEY_PATH`	build system, Supervisor	`/hab/cache/keys` if running as root; `$HOME/.hab/cache/keys` if running as non-root	Cache directory for origin signing keys
`HAB_CTL_SECRET`	Supervisor	no default	Shared secret used for communicating with a Supervisor.
`HAB_BLDR_CHANNEL`	build system, Supervisor	`stable`	Set the Chef Habitat Builder channel you are subscribing to, to a specific channel. Defaults to `stable`.
`HAB_BLDR_URL`	build system, Supervisor	`https://bldr.habitat.sh`	Sets an alternate default endpoint for communicating with Builder. Used by the Chef Habitat build system and the Supervisor
`HAB_DOCKER_OPTS`	build system	no default	When running a Studio on a platform that uses Docker (macOS), additional command line options to pass to the `docker` command.
`HAB_INTERNAL_BLDR_CHANNEL`	build system, Supervisor, exporters	`stable`	Channel from which Chef Habitat-specific packages (e.g., `core/hab-sup`, `core/hab-launcher`, etc.) are downloaded on-demand when first called. Generally of use only for those developing Chef Habitat. Only applies to Chef Habitat-specific packages, and nothing else.
`HAB_LICENSE`	build system, Supervisor, exporters	no default	Used to accept the Chef EULA. See Accepting the Chef License for valid values.
`HAB_LISTEN_CTL`	Supervisor	127.0.0.1:9632	The listen address for the Control Gateway. This also affects `hab` commands that interact with the Supervisor via the Control Gateway, for example: `hab sup status`.
`HAB_LISTEN_GOSSIP`	Supervisor	0.0.0.0:9638	The listen address for the Gossip System Gateway
`HAB_LISTEN_HTTP`	Supervisor	0.0.0.0:9631	The listen address for the HTTP Gateway
`HAB_NOCOLORING`	build system	no default	If set to the lowercase string `"true"` this environment variable will unconditionally disable text coloring where possible
`HAB_NONINTERACTIVE`	build system	no default	If set to the lowercase string `"true"` this environment variable will unconditionally disable interactive progress bars (i.e. “spinners”) where possible
`HAB_ORG`	Supervisor	no default	Organization to use when running with service group encryption
`HAB_ORIGIN`	build system	no default	Origin used to build packages. The signing key for this origin is passed to the build system.
`HAB_ORIGIN_KEYS`	build system	no default	Comma-separated list of origin keys to automatically share with the build system
`HAB_RING`	Supervisor	no default	The name of the ring used by the Supervisor when running with wire encryption
`HAB_RING_KEY`	Supervisor	no default	The contents of the ring key when running with wire encryption. Useful when running in a container.
`HAB_STUDIO_SECRET_<VARIABLE>`	build system	no default	Prefix to allow environment variables into the Studio. The prefix will be removed and your variable will be passed into the Studio at build time.
`HAB_STUDIOS_HOME`	build system	`/hab/studios`	Directory in which to create build Studios
`HAB_STUDIO_BACKLINE_PKG`	build system	`core/hab-backline/{{studio_version}}`	Overrides the default package identifier for the “backline” package which installs the Studio baseline package set.
`HAB_STUDIO_ROOT`	build system	no default	Root of the current Studio under `$HAB_STUDIOS_HOME`. Infrequently overridden.
`HAB_STUDIO_NOSTUDIORC`	build system	no default	When set to a non-empty value, a `.studiorc` will not be sourced when entering an interactive Studio via `hab studio enter`.
`HAB_STUDIO_SUP`	build system	no default	Used to customize the arguments passed to an automatically launched Supervisor, or to disable the automatic launching by setting it to `false`, `no`, or `0`.
`HAB_GLYPH_STYLE`	build system	`full` (`limited` on Windows)	Used to customize the rendering of unicode glyphs in UI messages. Valid values are `full`, `limited`, or `ascii`.
`HAB_SUP_UPDATE_MS`	Supervisor	60000	Interval in milliseconds governing how often to check for Supervisor updates when running with the –auto-update flag. Note: This variable has been deprecated. Users should instead use the –auto-update-period flag.
`HAB_UPDATE_STRATEGY_FREQUENCY_MS`	Supervisor	60000	Interval in milliseconds governing how often to check for service updates when running with an update strategy. Note: This variable has been deprecated. Users should instead use the –service-update-period flag.
`HAB_USER`	Supervisor	no default	User key to use when running with service group encryption
`http_proxy`	build system, Supervisor	no default	A URL for a local HTTP proxy server optionally supporting basic authentication
`https_proxy`	build system, Supervisor	no default	A URL for a local HTTPS proxy server optionally supporting basic authentication
`NO_INSTALL_DEPS`	build system	no default	Set this variable to prevent dependencies install during build
`no_proxy`	build system, Supervisor	no default	A comma-separated list of domain exclusions for the `http_proxy` and `https_proxy` environment variables
`SSL_CERT_FILE`	system	no default	Standard OpenSSL environment variable to override the system certificate file. This is particularly important for the secure HTTPS connection with a Builder instance. Can be used to help you navigate corporate firewalls.