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Configuration

The stack binary can be configured by passing parameters.

Default config

The stack can be used for local testing purposes without any additional configuration. To test and use the components to the fullest, you can use the --help flag to show available parameters, and refer to execution logs for recommendations.

Sources

Runtime flags

Example of runtime flags:

$ ttn-lw-stack start \
  --cluster.keys db114f80fd0ebf2a7b69db7e5a56fce248e53600e256b3a85d5b0ab844bc1aa8 \
  --http.cookie.hash-key 40847E55ED0CB34B3D491DC557326BF875FCE34EE0C8F50194E1BB3488055FA96D5CC4F3CF6C30C5F4922D8CEB4F72A1FE61317E1A7BC88619617AD6CEA983B3 \
  --http.cookie.block-key 38E31BCAD8CFC067ABC9F2988967E387E15DF9ADDA14E63F446ED955EEEA4637

Configuration files

You can specify a YAML configuration file with the -c flag. ~/.ttn-lw-<binary>.yml is used by default, with the binary type being stack or cli.

Example of a YAML configuration file:

cluster:
  keys:
  - db114f80fd0ebf2a7b69db7e5a56fce248e53600e256b3a85d5b0ab844bc1aa8

http:
  cookie:
    hash-key: 40847E55ED0CB34B3D491DC557326BF875FCE34EE0C8F50194E1BB3488055FA96D5CC4F3CF6C30C5F4922D8CEB4F72A1FE61317E1A7BC88619617AD6CEA983B3
    block-key: 38E31BCAD8CFC067ABC9F2988967E387E15DF9ADDA14E63F446ED955EEEA4637

You can then start a binary and pass this config:

$ ./ttn-lw-stack -c config.yml

Environment variables

Environment variables are the uppercased flags, with any separators (. or -) replaced by underscores (_). Environment variables are prefixed with TTN_LW_

Example of environment variable as options:

$ export TTN_LW_COOKIE_HASH_KEY=40847E55ED0CB34B3D491DC557326BF875FCE34EE0C8F50194E1BB3488055FA96D5CC4F3CF6C30C5F4922D8CEB4F72A1FE61317E1A7BC88619617AD6CEA983B3
$ export TTN_LW_LOG_LEVEL=debug
$ ttn-lw-identity-server start