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b37bbca521
These were broken since 2016:f0367da7d1since StartLimitIntervalSec got moved into [Unit] from [Service]. StartLimitBurst has also been moved accordingly, so let's fix that one too. NixOS systems have been producing logs such as: /nix/store/wf98r55aszi1bkmln1lvdbp7znsfr70i-unit-caddy.service/caddy.service:31: Unknown key name 'StartLimitIntervalSec' in section 'Service', ignoring. I have also removed some unnecessary duplication in units disabling rate limiting since setting either interval or burst to zero disables it (ad16158c10/src/basic/ratelimit.c (L16))
86 lines
2.7 KiB
Nix
86 lines
2.7 KiB
Nix
/*
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This file is for NixOS-specific options and configs.
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Code that is shared with nix-darwin goes in common.nix.
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*/
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{ pkgs, config, lib, ... }:
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let
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inherit (lib) mkIf mkDefault;
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cfg = config.services.hercules-ci-agent;
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command = "${cfg.package}/bin/hercules-ci-agent --config ${cfg.tomlFile}";
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testCommand = "${command} --test-configuration";
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in
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{
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imports = [
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./common.nix
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(lib.mkRenamedOptionModule ["services" "hercules-ci-agent" "user"] ["systemd" "services" "hercules-ci-agent" "serviceConfig" "User"])
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];
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config = mkIf cfg.enable {
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systemd.services.hercules-ci-agent = {
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wantedBy = [ "multi-user.target" ];
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after = [ "network-online.target" ];
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wants = [ "network-online.target" ];
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path = [ config.nix.package ];
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startLimitBurst = 30 * 1000000; # practically infinite
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serviceConfig = {
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User = "hercules-ci-agent";
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ExecStart = command;
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ExecStartPre = testCommand;
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Restart = "on-failure";
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RestartSec = 120;
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};
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};
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# Changes in the secrets do not affect the unit in any way that would cause
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# a restart, which is currently necessary to reload the secrets.
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systemd.paths.hercules-ci-agent-restart-files = {
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wantedBy = [ "hercules-ci-agent.service" ];
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pathConfig = {
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Unit = "hercules-ci-agent-restarter.service";
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PathChanged = [ cfg.settings.clusterJoinTokenPath cfg.settings.binaryCachesPath ];
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};
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};
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systemd.services.hercules-ci-agent-restarter = {
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serviceConfig.Type = "oneshot";
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script = ''
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# Wait a bit, with the effect of bundling up file changes into a single
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# run of this script and hopefully a single restart.
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sleep 10
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if systemctl is-active --quiet hercules-ci-agent.service; then
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if ${testCommand}; then
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systemctl restart hercules-ci-agent.service
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else
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echo 1>&2 "WARNING: Not restarting agent because config is not valid at this time."
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fi
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else
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echo 1>&2 "Not restarting hercules-ci-agent despite config file update, because it is not already active."
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fi
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'';
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};
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# Trusted user allows simplified configuration and better performance
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# when operating in a cluster.
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nix.trustedUsers = [ config.systemd.services.hercules-ci-agent.serviceConfig.User ];
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services.hercules-ci-agent.settings.nixUserIsTrusted = true;
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users.users.hercules-ci-agent = {
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home = cfg.settings.baseDirectory;
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createHome = true;
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group = "hercules-ci-agent";
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description = "Hercules CI Agent system user";
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isSystemUser = true;
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};
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users.groups.hercules-ci-agent = {};
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};
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}
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