# Configuration

`xds-cli` configuration is defined either by environment variables or by
setting command line options.

Configuration through environment variables may also be defined in a file that
will be sourced by `xds-cli` on start-up.

Use `--config|-c` option or set `XDS_CONFIG` environment variable to specify the config file to use.

So configuration is driven either by environment variables or by command line
options or using a config file knowing that the following priority order is used:

1. use option value (for example use project ID set by `--id` option),
1. else use variable `XDS_xxx` (for example `XDS_PROJECT_ID` variable) when a
   config file is specified with `--config|-c` option,
1. else use `XDS_xxx` (for example `XDS_PROJECT_ID`) environment variable

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**Note:**

All parameters after a double dash (--) are considered as the command
to execute on xds-server.
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## Global Options / Configuration variables

Following is the list of global options across all sub-commands.

__`--config|-c` option or `XDS_CONFIG` env variable__

Env config file to source on startup

__`--log|-l` option or `XDS_LOGLEVEL` env variable__

Logging level, supported levels are:

- panic
- fatal
- error
- warn
- info
- debug

Default level is "error".

**`--rpath` option or `XDS_PATH` env variable**

Relative path into project

**`timestamp|-ts` option or `XDS_TIMESTAMP` env variable**

Prefix output with timestamp

**`url` option or `XDS_AGENT_URL` env variable**

Local XDS agent url (default: "localhost:8800")