Function default_user_data_template 

pub fn default_user_data_template() -> String

Default cloud-init #cloud-config user-data template.

The returned document contains a runcmd: entry that runs zlayer node join with the placeholders {leader_addr}, {join_token}, and {labels}, using the EC2-style instance metadata endpoint to discover the public IPv4 address to advertise. Operators may supply their own template via CloudInitConfig::user_data_template; this is only a sensible default.