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nixpkgs/nixos/modules/services/networking/dnscrypt-proxy2.nix
snicket2100 866b411ab6 nixos/dnscrypt-proxy2: service restart on failure
it does happen that `dnscrypt-proxy` exit when it is unable to
synchronise its resolvers metadata on startup. this can happen due
to network connectivity issues for example. not restarting it automatically
means no dns resolution will work until a manual restart is performed.
2020-05-22 06:43:10 +02:00

63 lines
2 KiB
Nix

{ config, lib, pkgs, ... }: with lib;
let
cfg = config.services.dnscrypt-proxy2;
in
{
options.services.dnscrypt-proxy2 = {
enable = mkEnableOption "dnscrypt-proxy2";
settings = mkOption {
description = ''
Attrset that is converted and passed as TOML config file.
For available params, see: <link xlink:href="https://github.com/DNSCrypt/dnscrypt-proxy/blob/master/dnscrypt-proxy/example-dnscrypt-proxy.toml"/>
'';
example = literalExample ''
{
sources.public-resolvers = {
urls = [ "https://download.dnscrypt.info/resolvers-list/v2/public-resolvers.md" ];
cache_file = "public-resolvers.md";
minisign_key = "RWQf6LRCGA9i53mlYecO4IzT51TGPpvWucNSCh1CBM0QTaLn73Y7GFO3";
refresh_delay = 72;
};
}
'';
type = types.attrs;
default = {};
};
configFile = mkOption {
description = ''
Path to TOML config file. See: <link xlink:href="https://github.com/DNSCrypt/dnscrypt-proxy/blob/master/dnscrypt-proxy/example-dnscrypt-proxy.toml"/>
If this option is set, it will override any configuration done in options.services.dnscrypt-proxy2.settings.
'';
example = "/etc/dnscrypt-proxy/dnscrypt-proxy.toml";
type = types.path;
default = pkgs.runCommand "dnscrypt-proxy.toml" {
json = builtins.toJSON cfg.settings;
passAsFile = [ "json" ];
} ''
${pkgs.remarshal}/bin/json2toml < $jsonPath > $out
'';
defaultText = literalExample "TOML file generated from services.dnscrypt-proxy2.settings";
};
};
config = mkIf cfg.enable {
networking.nameservers = lib.mkDefault [ "127.0.0.1" ];
systemd.services.dnscrypt-proxy2 = {
after = [ "network.target" ];
wantedBy = [ "multi-user.target" ];
serviceConfig = {
AmbientCapabilities = "CAP_NET_BIND_SERVICE";
DynamicUser = true;
ExecStart = "${pkgs.dnscrypt-proxy2}/bin/dnscrypt-proxy -config ${cfg.configFile}";
Restart = "always";
};
};
};
}