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{ config, lib, pkgs, ... }:
let
cfg = config.services.haproxy;
haproxyCfg = pkgs.writeText "haproxy.conf" cfg.config;
in
with lib;
{
options = {
services.haproxy = {
enable = mkOption {
type = types.bool;
default = false;
description = ''
Whether to enable HAProxy, the reliable, high performance TCP/HTTP
load balancer.
'';
};
config = mkOption {
type = types.nullOr types.lines;
default = null;
description = ''
Contents of the HAProxy configuration file,
<filename>haproxy.conf</filename>.
'';
};
};
};
config = mkIf cfg.enable {
assertions = [{
assertion = cfg.config != null;
message = "You must provide services.haproxy.config.";
}];
systemd.services.haproxy = {
description = "HAProxy";
after = [ "network.target" ];
wantedBy = [ "multi-user.target" ];
serviceConfig = {
Type = "forking";
PIDFile = "/run/haproxy.pid";
ExecStartPre = "${pkgs.haproxy}/sbin/haproxy -c -q -f ${haproxyCfg}";
ExecStart = "${pkgs.haproxy}/sbin/haproxy -D -f ${haproxyCfg} -p /run/haproxy.pid";
ExecReload = "-${pkgs.bash}/bin/bash -c \"exec ${pkgs.haproxy}/sbin/haproxy -D -f ${haproxyCfg} -p /run/haproxy.pid -sf $MAINPID\"";
};
};
environment.systemPackages = [ pkgs.haproxy ];
users.extraUsers.haproxy = {
group = "haproxy";
uid = config.ids.uids.haproxy;
};
users.extraGroups.haproxy.gid = config.ids.uids.haproxy;
};
}
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