143 lines
4.4 KiB
Nix
143 lines
4.4 KiB
Nix
{ config, pkgs, lib, ... }:
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with lib;
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let
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cfg = config.services.cadvisor;
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in {
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options = {
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services.cadvisor = {
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enable = mkOption {
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default = false;
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type = types.bool;
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description = "Whether to enable cadvisor service.";
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};
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listenAddress = mkOption {
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default = "127.0.0.1";
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type = types.str;
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description = "Cadvisor listening host";
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};
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port = mkOption {
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default = 8080;
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type = types.int;
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description = "Cadvisor listening port";
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};
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storageDriver = mkOption {
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default = null;
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type = types.nullOr types.str;
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example = "influxdb";
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description = "Cadvisor storage driver.";
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};
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storageDriverHost = mkOption {
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default = "localhost:8086";
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type = types.str;
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description = "Cadvisor storage driver host.";
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};
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storageDriverDb = mkOption {
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default = "root";
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type = types.str;
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description = "Cadvisord storage driver database name.";
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};
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storageDriverUser = mkOption {
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default = "root";
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type = types.str;
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description = "Cadvisor storage driver username.";
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};
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storageDriverPassword = mkOption {
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default = "root";
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type = types.str;
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description = ''
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Cadvisor storage driver password.
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Warning: this password is stored in the world-readable Nix store. It's
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recommended to use the <option>storageDriverPasswordFile</option> option
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since that gives you control over the security of the password.
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<option>storageDriverPasswordFile</option> also takes precedence over <option>storageDriverPassword</option>.
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'';
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};
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storageDriverPasswordFile = mkOption {
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type = types.str;
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description = ''
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File that contains the cadvisor storage driver password.
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<option>storageDriverPasswordFile</option> takes precedence over <option>storageDriverPassword</option>
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Warning: when <option>storageDriverPassword</option> is non-empty this defaults to a file in the
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world-readable Nix store that contains the value of <option>storageDriverPassword</option>.
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It's recommended to override this with a path not in the Nix store.
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Tip: use <link xlink:href='https://nixos.org/nixops/manual/#idm140737318306400'>nixops key management</link>
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'';
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};
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storageDriverSecure = mkOption {
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default = false;
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type = types.bool;
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description = "Cadvisor storage driver, enable secure communication.";
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};
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extraOptions = mkOption {
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type = types.listOf types.str;
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default = [];
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description = ''
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Additional cadvisor options.
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See <link xlink:href='https://github.com/google/cadvisor/blob/master/docs/runtime_options.md'/> for available options.
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'';
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};
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};
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};
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config = mkMerge [
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{ services.cadvisor.storageDriverPasswordFile = mkIf (cfg.storageDriverPassword != "") (
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mkDefault (toString (pkgs.writeTextFile {
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name = "cadvisor-storage-driver-password";
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text = cfg.storageDriverPassword;
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}))
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);
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}
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(mkIf cfg.enable {
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systemd.services.cadvisor = {
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wantedBy = [ "multi-user.target" ];
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after = [ "network.target" "docker.service" "influxdb.service" ];
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path = optionals config.boot.zfs.enabled [ pkgs.zfs ];
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postStart = mkBefore ''
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until ${pkgs.curl.bin}/bin/curl -s -o /dev/null 'http://${cfg.listenAddress}:${toString cfg.port}/containers/'; do
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sleep 1;
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done
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'';
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script = ''
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exec ${pkgs.cadvisor}/bin/cadvisor \
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-logtostderr=true \
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-listen_ip="${cfg.listenAddress}" \
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-port="${toString cfg.port}" \
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${escapeShellArgs cfg.extraOptions} \
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${optionalString (cfg.storageDriver != null) ''
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-storage_driver "${cfg.storageDriver}" \
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-storage_driver_user "${cfg.storageDriverHost}" \
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-storage_driver_db "${cfg.storageDriverDb}" \
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-storage_driver_user "${cfg.storageDriverUser}" \
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-storage_driver_password "$(cat "${cfg.storageDriverPasswordFile}")" \
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${optionalString cfg.storageDriverSecure "-storage_driver_secure"}
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''}
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'';
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serviceConfig.TimeoutStartSec=300;
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};
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})
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];
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}
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