Configuration File Format

The configuration file format uses YAML syntax. Every command-line argument of cloudflared can be expressed in YAML.

For example, the --hostname [hostname] argument is written in the config file as:

hostname: [hostname]

You can use --config to point to a non-standard YAML file location:

$ cloudflared tunnel --config tunnels/cloudflared.yml

Without specifying --config, cloudflared will default to reading ~/.cloudflared/config.yml.

An example cloudflared.yml for the above command could look like:

url: https://localhost:8000
logfile: /var/log/cloudflared.log

Flags that don’t expect any value (such as --hello-world) should be specified as boolean true in the YAML:

hello-world: true

See the full set of command-line arguments