29027fd1e1
Using pkgs.lib on the spine of module evaluation is problematic because the pkgs argument depends on the result of module evaluation. To prevent an infinite recursion, pkgs and some of the modules are evaluated twice, which is inefficient. Using ‘with lib’ prevents this problem.
87 lines
2.1 KiB
Nix
87 lines
2.1 KiB
Nix
{ config, lib, pkgs, ... }:
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let
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cfg = config.services.haproxy;
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haproxyCfg = pkgs.writeText "haproxy.conf" cfg.config;
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in
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with lib;
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{
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options = {
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services.haproxy = {
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enable = mkOption {
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default = false;
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description = "
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Enable the HAProxy.
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";
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};
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config = mkOption {
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default =
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''
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global
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log 127.0.0.1 local6
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maxconn 24000
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daemon
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nbproc 1
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defaults
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mode http
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option httpclose
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# Remove requests from the queue if people press stop button
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option abortonclose
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# Try to connect this many times on failure
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retries 3
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# If a client is bound to a particular backend but it goes down,
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# send them to a different one
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option redispatch
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monitor-uri /haproxy-ping
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timeout connect 7s
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timeout queue 300s
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timeout client 300s
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timeout server 300s
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# Enable status page at this URL, on the port HAProxy is bound to
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stats enable
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stats uri /haproxy-status
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stats refresh 5s
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stats realm Haproxy statistics
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'';
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description = "
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Default configuration.
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";
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};
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};
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};
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config = mkIf cfg.enable {
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systemd.services.haproxy = {
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description = "HAProxy";
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after = [ "network.target" ];
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wantedBy = [ "multi-user.target" ];
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serviceConfig = {
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Type = "forking";
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PIDFile = "/var/run/haproxy.pid";
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ExecStartPre = "${pkgs.haproxy}/sbin/haproxy -c -q -f ${haproxyCfg}";
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ExecStart = "${pkgs.haproxy}/sbin/haproxy -D -f ${haproxyCfg} -p /var/run/haproxy.pid";
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ExecReload = "-${pkgs.bash}/bin/bash -c \"exec ${pkgs.haproxy}/sbin/haproxy -D -f ${haproxyCfg} -p /var/run/haproxy.pid -sf $MAINPID\"";
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};
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};
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environment.systemPackages = [ pkgs.haproxy ];
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users.extraUsers.haproxy = {
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group = "haproxy";
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uid = config.ids.uids.haproxy;
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};
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users.extraGroups.haproxy.gid = config.ids.uids.haproxy;
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};
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}
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