112 lines
3.5 KiB
Nix
112 lines
3.5 KiB
Nix
{ config, lib, pkgs, ... }:
|
|
|
|
with lib;
|
|
|
|
let
|
|
cfg = config.services.mackerel-agent;
|
|
settingsFmt = pkgs.formats.toml {};
|
|
in {
|
|
options.services.mackerel-agent = {
|
|
enable = mkEnableOption (lib.mdDoc "mackerel.io agent");
|
|
|
|
# the upstream package runs as root, but doesn't seem to be strictly
|
|
# necessary for basic functionality
|
|
runAsRoot = mkEnableOption (lib.mdDoc "running as root");
|
|
|
|
autoRetirement = mkEnableOption (lib.mdDoc ''
|
|
retiring the host upon OS shutdown
|
|
'');
|
|
|
|
apiKeyFile = mkOption {
|
|
type = types.path;
|
|
example = "/run/keys/mackerel-api-key";
|
|
description = lib.mdDoc ''
|
|
Path to file containing the Mackerel API key. The file should contain a
|
|
single line of the following form:
|
|
|
|
`apikey = "EXAMPLE_API_KEY"`
|
|
'';
|
|
};
|
|
|
|
settings = mkOption {
|
|
description = lib.mdDoc ''
|
|
Options for mackerel-agent.conf.
|
|
|
|
Documentation:
|
|
<https://mackerel.io/docs/entry/spec/agent>
|
|
'';
|
|
|
|
default = {};
|
|
example = {
|
|
verbose = false;
|
|
silent = false;
|
|
};
|
|
|
|
type = types.submodule {
|
|
freeformType = settingsFmt.type;
|
|
|
|
options.host_status = {
|
|
on_start = mkOption {
|
|
type = types.enum [ "working" "standby" "maintenance" "poweroff" ];
|
|
description = lib.mdDoc "Host status after agent startup.";
|
|
default = "working";
|
|
};
|
|
on_stop = mkOption {
|
|
type = types.enum [ "working" "standby" "maintenance" "poweroff" ];
|
|
description = lib.mdDoc "Host status after agent shutdown.";
|
|
default = "poweroff";
|
|
};
|
|
};
|
|
|
|
options.diagnostic =
|
|
mkEnableOption (lib.mdDoc "collecting memory usage for the agent itself");
|
|
};
|
|
};
|
|
};
|
|
|
|
config = mkIf cfg.enable {
|
|
environment.systemPackages = with pkgs; [ mackerel-agent ];
|
|
|
|
environment.etc = {
|
|
"mackerel-agent/mackerel-agent.conf".source =
|
|
settingsFmt.generate "mackerel-agent.conf" cfg.settings;
|
|
"mackerel-agent/conf.d/api-key.conf".source = cfg.apiKeyFile;
|
|
};
|
|
|
|
services.mackerel-agent.settings = {
|
|
root = mkDefault "/var/lib/mackerel-agent";
|
|
pidfile = mkDefault "/run/mackerel-agent/mackerel-agent.pid";
|
|
|
|
# conf.d stores the symlink to cfg.apiKeyFile
|
|
include = mkDefault "/etc/mackerel-agent/conf.d/*.conf";
|
|
};
|
|
|
|
# upstream service file in https://github.com/mackerelio/mackerel-agent/blob/master/packaging/rpm/src/mackerel-agent.service
|
|
systemd.services.mackerel-agent = {
|
|
description = "mackerel.io agent";
|
|
wants = [ "network-online.target" ];
|
|
after = [ "network-online.target" "nss-lookup.target" ];
|
|
wantedBy = [ "multi-user.target" ];
|
|
environment = {
|
|
MACKEREL_PLUGIN_WORKDIR = mkDefault "%C/mackerel-agent";
|
|
};
|
|
serviceConfig = {
|
|
DynamicUser = !cfg.runAsRoot;
|
|
PrivateTmp = mkDefault true;
|
|
CacheDirectory = "mackerel-agent";
|
|
ConfigurationDirectory = "mackerel-agent";
|
|
RuntimeDirectory = "mackerel-agent";
|
|
StateDirectory = "mackerel-agent";
|
|
ExecStart = "${pkgs.mackerel-agent}/bin/mackerel-agent supervise";
|
|
ExecStopPost = mkIf cfg.autoRetirement "${pkg.mackerel-agent}/bin/mackerel-agent retire -force";
|
|
ExecReload = "${pkgs.coreutils}/bin/kill -HUP $MAINPID";
|
|
LimitNOFILE = mkDefault 65536;
|
|
LimitNPROC = mkDefault 65536;
|
|
};
|
|
restartTriggers = [
|
|
config.environment.etc."mackerel-agent/mackerel-agent.conf".source
|
|
];
|
|
};
|
|
};
|
|
}
|