Environment Variables

Available Environment Variables

The following environment variables are accepted by the router, and they override other configurations that can be set in the router’s configuration file (router.config.yaml):

Name	Accepted Values	Overrides (YAML)
`LOG_LEVEL`	`trace` / `debug` / `info` / `warn` / `error`	`log.level`
`LOG_FORMAT`	`json` / `pretty-tree` / `pretty-compact`	`log.format`
`LOG_FILTER`	`string`	`log.filter`
`GRAPHIQL_ENABLED`	`true` / `false`	`graphiql.enabled`
`PORT`	`number` (port number)	`http.port`
`HOST`	`string` (host name or IP address)	`http.host`
`SUPERGRAPH_FILE_PATH`	`string` (relative or absolute path to a local file)	`supergraph[file].path`
`HIVE_CDN_ENDPOINT`	`string` (full url to Hive CDN supergraph artifact)	`supergraph[hive].endpoint`
`HIVE_CDN_KEY`	`string` (Hive CDN key)	`supergraph[hive].key`
`HIVE_CDN_POLL_INTERVAL`	`string` (human-readable, for example: `10s`)	`supergraph[hive].poll_interval`

In cases where a configuration file (router.config.yaml) is used with environment variables at the same time, environment variables will only override the specific configuration values.

Additional Variables

In addition, you may specify the following environment variables:

Name	Accepted Values	Description
`ROUTER_CONFIG_FILE_PATH`	`string` (relative or absolute path to a local file)	Overrides the path to the router configuration file.