traefik/docs/configuration/backends/consul.md

Consul Key-Value Provider

Traefik can be configured to use Consul as a provider.

################################################################
# Consul KV Provider
################################################################

# Enable Consul KV Provider.
[consul]

# Consul server endpoint.
#
# Required
# Default: "127.0.0.1:8500"
#
endpoint = "127.0.0.1:8500"

# Enable watch Consul changes.
#
# Optional
# Default: true
#
watch = true

# Prefix used for KV store.
#
# Optional
# Default: traefik
#
prefix = "traefik"

# Override default configuration template.
# For advanced users :)
#
# Optional
#
# filename = "consul.tmpl"

# Use Consul user/pass authentication.
#
# Optional
#
# username = foo
# password = bar

# Enable Consul TLS connection.
#
# Optional
#
#    [consul.tls]
#    ca = "/etc/ssl/ca.crt"
#    cert = "/etc/ssl/consul.crt"
#    key = "/etc/ssl/consul.key"
#    insecureSkipVerify = true

To enable constraints see provider-specific constraints section.

Please refer to the Key Value storage structure section to get documentation on Traefik KV structure.