traefik/docs/content/https/ref-acme.toml

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# Enable ACME (Let's Encrypt): automatic SSL.
[certificatesResolvers.sample.acme]
# Email address used for registration.
#
# Required
#
email = "test@traefik.io"
# File or key used for certificates storage.
#
# Required
#
storage = "acme.json"
# CA server to use.
# Uncomment the line to use Let's Encrypt's staging server,
# leave commented to go to prod.
#
# Optional
# Default: "https://acme-v02.api.letsencrypt.org/directory"
#
# caServer = "https://acme-staging-v02.api.letsencrypt.org/directory"
# KeyType to use.
#
# Optional
# Default: "RSA4096"
#
# Available values : "EC256", "EC384", "RSA2048", "RSA4096", "RSA8192"
#
# keyType = "RSA4096"
# Use a TLS-ALPN-01 ACME challenge.
#
# Optional (but recommended)
#
[certificatesResolvers.le.acme.tlsChallenge]
# Use a HTTP-01 ACME challenge.
#
# Optional
#
# [certificatesResolvers.le.acme.httpChallenge]
# EntryPoint to use for the HTTP-01 challenges.
#
# Required
#
# entryPoint = "web"
# Use a DNS-01 ACME challenge rather than HTTP-01 challenge.
# Note: mandatory for wildcard certificate generation.
#
# Optional
#
# [certificatesResolvers.le.acme.dnsChallenge]
# DNS provider used.
#
# Required
#
# provider = "digitalocean"
# By default, the provider will verify the TXT DNS challenge record before letting ACME verify.
# If delayBeforeCheck is greater than zero, this check is delayed for the configured duration in seconds.
# Useful if internal networks block external DNS queries.
#
# Optional
# Default: 0
#
# delayBeforeCheck = 0
# Use following DNS servers to resolve the FQDN authority.
#
# Optional
# Default: empty
#
# resolvers = ["1.1.1.1:53", "8.8.8.8:53"]
# Disable the DNS propagation checks before notifying ACME that the DNS challenge is ready.
#
# NOT RECOMMENDED:
# Increase the risk of reaching Let's Encrypt's rate limits.
#
# Optional
# Default: false
#
# disablePropagationCheck = true