parent
2c99a203c7
commit
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{ config, lib, pkgs, ... }: |
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|
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with lib; |
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let |
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cfg = config.services.mackerel-agent; |
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settingsFmt = pkgs.formats.toml {}; |
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in { |
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options.services.mackerel-agent = { |
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enable = mkEnableOption "mackerel.io agent"; |
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|
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# the upstream package runs as root, but doesn't seem to be strictly |
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# necessary for basic functionality |
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runAsRoot = mkEnableOption "Whether to run as root."; |
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autoRetirement = mkEnableOption '' |
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Whether to automatically retire the host upon OS shutdown. |
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''; |
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|
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apiKeyFile = mkOption { |
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type = types.path; |
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default = ""; |
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example = "/run/keys/mackerel-api-key"; |
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description = '' |
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Path to file containing the Mackerel API key. The file should contain a |
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single line of the following form: |
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<literallayout>apikey = "EXAMPLE_API_KEY"</literallayout> |
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''; |
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}; |
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settings = mkOption { |
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description = '' |
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Options for mackerel-agent.conf. |
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|
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Documentation: |
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<link xlink:href="https://mackerel.io/docs/entry/spec/agent"/> |
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''; |
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|
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default = {}; |
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example = { |
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verbose = false; |
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silent = false; |
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}; |
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type = types.submodule { |
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freeformType = settingsFmt.type; |
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options.host_status = { |
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on_start = mkOption { |
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type = types.enum [ "working" "standby" "maintenance" "poweroff" ]; |
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description = "Host status after agent startup."; |
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default = "working"; |
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}; |
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on_stop = mkOption { |
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type = types.enum [ "working" "standby" "maintenance" "poweroff" ]; |
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description = "Host status after agent shutdown."; |
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default = "poweroff"; |
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}; |
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}; |
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options.diagnostic = |
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mkEnableOption "Collect memory usage for the agent itself"; |
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}; |
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}; |
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}; |
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config = mkIf cfg.enable { |
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environment.systemPackages = with pkgs; [ mackerel-agent ]; |
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environment.etc = { |
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"mackerel-agent/mackerel-agent.conf".source = |
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settingsFmt.generate "mackerel-agent.conf" cfg.settings; |
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"mackerel-agent/conf.d/api-key.conf".source = cfg.apiKeyFile; |
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}; |
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|
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services.mackerel-agent.settings = { |
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root = mkDefault "/var/lib/mackerel-agent"; |
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pidfile = mkDefault "/run/mackerel-agent/mackerel-agent.pid"; |
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|
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# conf.d stores the symlink to cfg.apiKeyFile |
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include = mkDefault "/etc/mackerel-agent/conf.d/*.conf"; |
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}; |
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# upstream service file in https://git.io/JUt4Q |
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systemd.services.mackerel-agent = { |
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description = "mackerel.io agent"; |
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after = [ "network-online.target" "nss-lookup.target" ]; |
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wantedBy = [ "multi-user.target" ]; |
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environment = { |
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MACKEREL_PLUGIN_WORKDIR = mkDefault "%C/mackerel-agent"; |
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}; |
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serviceConfig = { |
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DynamicUser = !cfg.runAsRoot; |
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PrivateTmp = mkDefault true; |
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CacheDirectory = "mackerel-agent"; |
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ConfigurationDirectory = "mackerel-agent"; |
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RuntimeDirectory = "mackerel-agent"; |
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StateDirectory = "mackerel-agent"; |
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ExecStart = "${pkgs.mackerel-agent}/bin/mackerel-agent supervise"; |
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ExecStopPost = mkIf cfg.autoRetirement "${pkg.mackerel-agent}/bin/mackerel-agent retire -force"; |
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ExecReload = "${pkgs.coreutils}/bin/kill -HUP $MAINPID"; |
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LimitNOFILE = mkDefault 65536; |
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LimitNPROC = mkDefault 65536; |
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}; |
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restartTriggers = [ |
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config.environment.etc."mackerel-agent/mackerel-agent.conf".source |
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]; |
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}; |
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}; |
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} |
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