servers/losurdo/acme/sourcephile.fr.nix

   1 { pkgs, lib, config, servers, ... }:
   2 let
   3   domain = "sourcephile.fr";
   4   domainID = lib.replaceStrings ["."] ["_"] domain;
   5   credentialsFile = "/var/lib/acme/.lego/${domain}/rfc2136";
   6   inherit (config.users) users groups;
   7 in
   8 {
   9 systemd.services."acme-${domain}".after = [
  10   "unbound.service"
  11 ];
  12 networking.nftables.ruleset = ''
  13   # for lego to update ACME DNS-01 challenge
  14   add rule inet filter fw2net tcp dport 53 ip daddr ${servers.mermet.ipv4} counter accept comment "DNS"
  15   add rule inet filter fw2net udp dport 53 ip daddr ${servers.mermet.ipv4} counter accept comment "DNS"
  16   # for lego to check DNS propagation on ns6.gandi.net
  17   add rule inet filter fw2net ip daddr 217.70.177.40 tcp dport 53 skuid ${users.root.name} counter accept comment "DNS gandi"
  18   add rule inet filter fw2net ip daddr 217.70.177.40 udp dport 53 skuid ${users.root.name} counter accept comment "DNS gandi"
  19 '';
  20 security.acme.certs."${domain}" = {
  21   email = "root+letsencrypt@${domain}";
  22   extraDomains = {
  23     "*.${domain}" = null;
  24   };
  25   user = users.root.name;
  26   group = groups.acme.name;
  27   allowKeysForGroup = true;
  28   keyType = "rsa4096";
  29   dnsProvider = "rfc2136";
  30   # ns6.gandi.net takes roughly 5min to update
  31   # hence lego's RFC2136_PROPAGATION_TIMEOUT=1000
  32   #dnsPropagationCheck = false;
  33   inherit credentialsFile;
  34 };
  35 security.install.shellHook = ''
  36   {
  37   cat <<-EOF
  38   RFC2136_NAMESERVER=ns.${domain}:53
  39   RFC2136_TSIG_ALGORITHM=hmac-sha256.
  40   RFC2136_TSIG_KEY=acme_${domainID}
  41   RFC2136_PROPAGATION_TIMEOUT=1000
  42   RFC2136_POLLING_INTERVAL=30
  43   RFC2136_SEQUENCE_INTERVAL=30
  44   RFC2136_DNS_TIMEOUT=1000
  45   RFC2136_TTL=1
  46   EOF
  47   pass "servers/losurdo/lego/${domain}/rfc2136"
  48   } |
  49   ssh "$target" install -D -m 0400 -o root -g root /dev/stdin \
  50    ${credentialsFile}
  51 '';
  52 }