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nixpkgs/nixos/modules/services/monitoring/zabbix-server.nix
Eelco Dolstra 29027fd1e1 Rewrite ‘with pkgs.lib’ -> ‘with lib’
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.
2014-04-14 16:26:48 +02:00

114 lines
2.9 KiB
Nix

# Zabbix server daemon.
{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.zabbixServer;
stateDir = "/var/run/zabbix";
logDir = "/var/log/zabbix";
libDir = "/var/lib/zabbix";
pidFile = "${stateDir}/zabbix_server.pid";
configFile = pkgs.writeText "zabbix_server.conf"
''
LogFile = ${logDir}/zabbix_server
PidFile = ${pidFile}
${optionalString (cfg.dbServer != "localhost") ''
DBHost = ${cfg.dbServer}
''}
DBName = zabbix
DBUser = zabbix
${optionalString (cfg.dbPassword != "") ''
DBPassword = ${cfg.dbPassword}
''}
'';
useLocalPostgres = cfg.dbServer == "localhost" || cfg.dbServer == "";
in
{
###### interface
options = {
services.zabbixServer.enable = mkOption {
default = false;
description = ''
Whether to run the Zabbix server on this machine.
'';
};
services.zabbixServer.dbServer = mkOption {
default = "localhost";
description = ''
Hostname or IP address of the database server.
Use an empty string ("") to use peer authentication.
'';
};
services.zabbixServer.dbPassword = mkOption {
default = "";
description = "Password used to connect to the database server.";
};
};
###### implementation
config = mkIf cfg.enable {
services.postgresql.enable = useLocalPostgres;
users.extraUsers = singleton
{ name = "zabbix";
uid = config.ids.uids.zabbix;
description = "Zabbix daemon user";
};
systemd.services."zabbix-server" =
{ description = "Zabbix Server";
wantedBy = [ "multi-user.target" ];
after = optional useLocalPostgres "postgresql.service";
preStart =
''
mkdir -m 0755 -p ${stateDir} ${logDir} ${libDir}
chown zabbix ${stateDir} ${logDir} ${libDir}
if ! test -e "${libDir}/db-created"; then
${pkgs.postgresql}/bin/createuser --no-superuser --no-createdb --no-createrole zabbix || true
${pkgs.postgresql}/bin/createdb --owner zabbix zabbix || true
cat ${pkgs.zabbix.server}/share/zabbix/db/schema/postgresql.sql | ${pkgs.su}/bin/su -s "$SHELL" zabbix -c '${pkgs.postgresql}/bin/psql zabbix'
cat ${pkgs.zabbix.server}/share/zabbix/db/data/images_pgsql.sql | ${pkgs.su}/bin/su -s "$SHELL" zabbix -c '${pkgs.postgresql}/bin/psql zabbix'
cat ${pkgs.zabbix.server}/share/zabbix/db/data/data.sql | ${pkgs.su}/bin/su -s "$SHELL" zabbix -c '${pkgs.postgresql}/bin/psql zabbix'
touch "${libDir}/db-created"
fi
'';
path = [ pkgs.nettools ];
serviceConfig.ExecStart = "@${pkgs.zabbix.server}/sbin/zabbix_server zabbix_server --config ${configFile}";
serviceConfig.Type = "forking";
serviceConfig.Restart = "always";
serviceConfig.RestartSec = 2;
serviceConfig.PIDFile = pidFile;
};
};
}