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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.
101 lines
1.9 KiB
Nix
101 lines
1.9 KiB
Nix
# Zabbix agent daemon.
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{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.zabbixAgent;
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stateDir = "/var/run/zabbix";
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logDir = "/var/log/zabbix";
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pidFile = "${stateDir}/zabbix_agentd.pid";
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configFile = pkgs.writeText "zabbix_agentd.conf"
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''
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Server = ${cfg.server}
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LogFile = ${logDir}/zabbix_agentd
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PidFile = ${pidFile}
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StartAgents = 1
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${config.services.zabbixAgent.extraConfig}
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'';
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in
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{
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###### interface
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options = {
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services.zabbixAgent = {
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enable = mkOption {
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default = false;
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description = ''
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Whether to run the Zabbix monitoring agent on this machine.
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It will send monitoring data to a Zabbix server.
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'';
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};
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server = mkOption {
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default = "127.0.0.1";
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description = ''
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The IP address or hostname of the Zabbix server to connect to.
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'';
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};
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extraConfig = mkOption {
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default = "";
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description = ''
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Configuration that is injected verbatim into the configuration file.
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'';
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};
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};
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};
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###### implementation
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config = mkIf cfg.enable {
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users.extraUsers = singleton
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{ name = "zabbix";
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uid = config.ids.uids.zabbix;
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description = "Zabbix daemon user";
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};
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systemd.services."zabbix-agent" =
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{ description = "Zabbix Agent";
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wantedBy = [ "multi-user.target" ];
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path = [ pkgs.nettools ];
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preStart =
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''
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mkdir -m 0755 -p ${stateDir} ${logDir}
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chown zabbix ${stateDir} ${logDir}
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'';
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serviceConfig.ExecStart = "@${pkgs.zabbix.agent}/sbin/zabbix_agentd zabbix_agentd --config ${configFile}";
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serviceConfig.Type = "forking";
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serviceConfig.RemainAfterExit = true;
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serviceConfig.Restart = "always";
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serviceConfig.RestartSec = 2;
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};
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environment.systemPackages = [ pkgs.zabbix.agent ];
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};
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}
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