576 lines
22 KiB
Nix
576 lines
22 KiB
Nix
{ config, lib, pkgs, ... }:
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with builtins;
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with lib;
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let
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cfg = config.services.gitlab-runner;
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hasDocker = config.virtualisation.docker.enable;
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hashedServices = mapAttrs'
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(name: service: nameValuePair
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"${name}_${config.networking.hostName}_${
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substring 0 12
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(hashString "md5" (unsafeDiscardStringContext (toJSON service)))}"
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service)
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cfg.services;
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configPath = "$HOME/.gitlab-runner/config.toml";
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configureScript = pkgs.writeShellScriptBin "gitlab-runner-configure" (
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if (cfg.configFile != null) then ''
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mkdir -p $(dirname ${configPath})
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cp ${cfg.configFile} ${configPath}
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# make config file readable by service
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chown -R --reference=$HOME $(dirname ${configPath})
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'' else ''
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export CONFIG_FILE=${configPath}
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mkdir -p $(dirname ${configPath})
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# remove no longer existing services
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gitlab-runner verify --delete
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# current and desired state
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NEEDED_SERVICES=$(echo ${concatStringsSep " " (attrNames hashedServices)} | tr " " "\n")
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REGISTERED_SERVICES=$(gitlab-runner list 2>&1 | grep 'Executor' | awk '{ print $1 }')
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# difference between current and desired state
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NEW_SERVICES=$(grep -vxF -f <(echo "$REGISTERED_SERVICES") <(echo "$NEEDED_SERVICES") || true)
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OLD_SERVICES=$(grep -vxF -f <(echo "$NEEDED_SERVICES") <(echo "$REGISTERED_SERVICES") || true)
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# register new services
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${concatStringsSep "\n" (mapAttrsToList (name: service: ''
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if echo "$NEW_SERVICES" | grep -xq ${name}; then
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bash -c ${escapeShellArg (concatStringsSep " \\\n " ([
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"set -a && source ${service.registrationConfigFile} &&"
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"gitlab-runner register"
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"--non-interactive"
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"--name ${name}"
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"--executor ${service.executor}"
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"--limit ${toString service.limit}"
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"--request-concurrency ${toString service.requestConcurrency}"
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"--maximum-timeout ${toString service.maximumTimeout}"
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] ++ service.registrationFlags
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++ optional (service.buildsDir != null)
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"--builds-dir ${service.buildsDir}"
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++ optional (service.cloneUrl != null)
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"--clone-url ${service.cloneUrl}"
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++ optional (service.preCloneScript != null)
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"--pre-clone-script ${service.preCloneScript}"
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++ optional (service.preBuildScript != null)
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"--pre-build-script ${service.preBuildScript}"
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++ optional (service.postBuildScript != null)
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"--post-build-script ${service.postBuildScript}"
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++ optional (service.tagList != [ ])
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"--tag-list ${concatStringsSep "," service.tagList}"
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++ optional service.runUntagged
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"--run-untagged"
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++ optional service.protected
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"--access-level ref_protected"
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++ optional service.debugTraceDisabled
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"--debug-trace-disabled"
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++ map (e: "--env ${escapeShellArg e}") (mapAttrsToList (name: value: "${name}=${value}") service.environmentVariables)
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++ optionals (service.executor == "docker") (
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assert (
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assertMsg (service.dockerImage != null)
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"dockerImage option is required for docker executor (${name})");
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[ "--docker-image ${service.dockerImage}" ]
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++ optional service.dockerDisableCache
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"--docker-disable-cache"
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++ optional service.dockerPrivileged
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"--docker-privileged"
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++ map (v: "--docker-volumes ${escapeShellArg v}") service.dockerVolumes
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++ map (v: "--docker-extra-hosts ${escapeShellArg v}") service.dockerExtraHosts
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++ map (v: "--docker-allowed-images ${escapeShellArg v}") service.dockerAllowedImages
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++ map (v: "--docker-allowed-services ${escapeShellArg v}") service.dockerAllowedServices
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)
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))} && sleep 1 || exit 1
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fi
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'') hashedServices)}
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# unregister old services
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for NAME in $(echo "$OLD_SERVICES")
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do
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[ ! -z "$NAME" ] && gitlab-runner unregister \
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--name "$NAME" && sleep 1
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done
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# update global options
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remarshal --if toml --of json ${configPath} \
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| jq -cM ${escapeShellArg (concatStringsSep " | " [
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".check_interval = ${toJSON cfg.checkInterval}"
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".concurrent = ${toJSON cfg.concurrent}"
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".sentry_dsn = ${toJSON cfg.sentryDSN}"
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".listen_address = ${toJSON cfg.prometheusListenAddress}"
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".session_server.listen_address = ${toJSON cfg.sessionServer.listenAddress}"
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".session_server.advertise_address = ${toJSON cfg.sessionServer.advertiseAddress}"
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".session_server.session_timeout = ${toJSON cfg.sessionServer.sessionTimeout}"
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"del(.[] | nulls)"
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"del(.session_server[] | nulls)"
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])} \
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| remarshal --if json --of toml \
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| sponge ${configPath}
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# make config file readable by service
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chown -R --reference=$HOME $(dirname ${configPath})
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'');
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startScript = pkgs.writeShellScriptBin "gitlab-runner-start" ''
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export CONFIG_FILE=${configPath}
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exec gitlab-runner run --working-directory $HOME
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'';
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in
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{
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options.services.gitlab-runner = {
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enable = mkEnableOption "Gitlab Runner";
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configFile = mkOption {
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type = types.nullOr types.path;
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default = null;
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description = ''
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Configuration file for gitlab-runner.
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<option>configFile</option> takes precedence over <option>services</option>.
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<option>checkInterval</option> and <option>concurrent</option> will be ignored too.
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This option is deprecated, please use <option>services</option> instead.
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You can use <option>registrationConfigFile</option> and
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<option>registrationFlags</option>
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for settings not covered by this module.
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'';
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};
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checkInterval = mkOption {
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type = types.int;
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default = 0;
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example = literalExample "with lib; (length (attrNames config.services.gitlab-runner.services)) * 3";
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description = ''
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Defines the interval length, in seconds, between new jobs check.
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The default value is 3;
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if set to 0 or lower, the default value will be used.
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See <link xlink:href="https://docs.gitlab.com/runner/configuration/advanced-configuration.html#how-check_interval-works">runner documentation</link> for more information.
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'';
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};
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concurrent = mkOption {
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type = types.int;
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default = 1;
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example = literalExample "config.nix.maxJobs";
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description = ''
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Limits how many jobs globally can be run concurrently.
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The most upper limit of jobs using all defined runners.
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0 does not mean unlimited.
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'';
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};
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sentryDSN = mkOption {
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type = types.nullOr types.str;
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default = null;
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example = "https://public:private@host:port/1";
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description = ''
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Data Source Name for tracking of all system level errors to Sentry.
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'';
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};
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prometheusListenAddress = mkOption {
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type = types.nullOr types.str;
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default = null;
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example = "localhost:8080";
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description = ''
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Address (<host>:<port>) on which the Prometheus metrics HTTP server
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should be listening.
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'';
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};
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sessionServer = mkOption {
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type = types.submodule {
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options = {
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listenAddress = mkOption {
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type = types.nullOr types.str;
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default = null;
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example = "0.0.0.0:8093";
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description = ''
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An internal URL to be used for the session server.
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'';
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};
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advertiseAddress = mkOption {
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type = types.nullOr types.str;
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default = null;
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example = "runner-host-name.tld:8093";
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description = ''
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The URL that the Runner will expose to GitLab to be used
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to access the session server.
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Fallbacks to <option>listenAddress</option> if not defined.
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'';
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};
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sessionTimeout = mkOption {
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type = types.int;
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default = 1800;
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description = ''
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How long in seconds the session can stay active after
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the job completes (which will block the job from finishing).
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'';
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};
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};
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};
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default = { };
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example = literalExample ''
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{
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listenAddress = "0.0.0.0:8093";
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}
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'';
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description = ''
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The session server allows the user to interact with jobs
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that the Runner is responsible for. A good example of this is the
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<link xlink:href="https://docs.gitlab.com/ee/ci/interactive_web_terminal/index.html">interactive web terminal</link>.
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'';
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};
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gracefulTermination = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Finish all remaining jobs before stopping.
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If not set gitlab-runner will stop immediatly without waiting
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for jobs to finish, which will lead to failed builds.
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'';
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};
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gracefulTimeout = mkOption {
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type = types.str;
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default = "infinity";
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example = "5min 20s";
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description = ''
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Time to wait until a graceful shutdown is turned into a forceful one.
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'';
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};
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package = mkOption {
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type = types.package;
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default = pkgs.gitlab-runner;
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defaultText = "pkgs.gitlab-runner";
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example = literalExample "pkgs.gitlab-runner_1_11";
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description = "Gitlab Runner package to use.";
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};
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extraPackages = mkOption {
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type = types.listOf types.package;
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default = [ ];
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description = ''
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Extra packages to add to PATH for the gitlab-runner process.
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'';
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};
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services = mkOption {
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description = "GitLab Runner services.";
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default = { };
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example = literalExample ''
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{
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# runner for building in docker via host's nix-daemon
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# nix store will be readable in runner, might be insecure
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nix = {
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# File should contain at least these two variables:
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# `CI_SERVER_URL`
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# `REGISTRATION_TOKEN`
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registrationConfigFile = "/run/secrets/gitlab-runner-registration";
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dockerImage = "alpine";
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dockerVolumes = [
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"/nix/store:/nix/store:ro"
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"/nix/var/nix/db:/nix/var/nix/db:ro"
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"/nix/var/nix/daemon-socket:/nix/var/nix/daemon-socket:ro"
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];
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dockerDisableCache = true;
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preBuildScript = pkgs.writeScript "setup-container" '''
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mkdir -p -m 0755 /nix/var/log/nix/drvs
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mkdir -p -m 0755 /nix/var/nix/gcroots
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mkdir -p -m 0755 /nix/var/nix/profiles
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mkdir -p -m 0755 /nix/var/nix/temproots
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mkdir -p -m 0755 /nix/var/nix/userpool
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mkdir -p -m 1777 /nix/var/nix/gcroots/per-user
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mkdir -p -m 1777 /nix/var/nix/profiles/per-user
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mkdir -p -m 0755 /nix/var/nix/profiles/per-user/root
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mkdir -p -m 0700 "$HOME/.nix-defexpr"
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. ''${pkgs.nix}/etc/profile.d/nix.sh
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''${pkgs.nix}/bin/nix-env -i ''${concatStringsSep " " (with pkgs; [ nix cacert git openssh ])}
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''${pkgs.nix}/bin/nix-channel --add https://nixos.org/channels/nixpkgs-unstable
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''${pkgs.nix}/bin/nix-channel --update nixpkgs
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''';
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environmentVariables = {
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ENV = "/etc/profile";
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USER = "root";
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NIX_REMOTE = "daemon";
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PATH = "/nix/var/nix/profiles/default/bin:/nix/var/nix/profiles/default/sbin:/bin:/sbin:/usr/bin:/usr/sbin";
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NIX_SSL_CERT_FILE = "/nix/var/nix/profiles/default/etc/ssl/certs/ca-bundle.crt";
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};
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tagList = [ "nix" ];
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};
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# runner for building docker images
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docker-images = {
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# File should contain at least these two variables:
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# `CI_SERVER_URL`
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# `REGISTRATION_TOKEN`
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registrationConfigFile = "/run/secrets/gitlab-runner-registration";
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dockerImage = "docker:stable";
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dockerVolumes = [
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"/var/run/docker.sock:/var/run/docker.sock"
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];
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tagList = [ "docker-images" ];
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};
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# runner for executing stuff on host system (very insecure!)
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# make sure to add required packages (including git!)
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# to `environment.systemPackages`
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shell = {
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# File should contain at least these two variables:
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# `CI_SERVER_URL`
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# `REGISTRATION_TOKEN`
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registrationConfigFile = "/run/secrets/gitlab-runner-registration";
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executor = "shell";
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tagList = [ "shell" ];
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};
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# runner for everything else
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default = {
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# File should contain at least these two variables:
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# `CI_SERVER_URL`
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# `REGISTRATION_TOKEN`
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registrationConfigFile = "/run/secrets/gitlab-runner-registration";
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dockerImage = "debian:stable";
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};
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}
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'';
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type = types.attrsOf (types.submodule {
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options = {
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registrationConfigFile = mkOption {
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type = types.path;
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description = ''
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Absolute path to a file with environment variables
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used for gitlab-runner registration.
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A list of all supported environment variables can be found in
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<literal>gitlab-runner register --help</literal>.
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Ones that you probably want to set is
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<literal>CI_SERVER_URL=<CI server URL></literal>
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<literal>REGISTRATION_TOKEN=<registration secret></literal>
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'';
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};
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registrationFlags = mkOption {
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type = types.listOf types.str;
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default = [ ];
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example = [ "--docker-helper-image my/gitlab-runner-helper" ];
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description = ''
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Extra command-line flags passed to
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<literal>gitlab-runner register</literal>.
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Execute <literal>gitlab-runner register --help</literal>
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for a list of supported flags.
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'';
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};
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environmentVariables = mkOption {
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type = types.attrsOf types.str;
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default = { };
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example = { NAME = "value"; };
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description = ''
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Custom environment variables injected to build environment.
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For secrets you can use <option>registrationConfigFile</option>
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with <literal>RUNNER_ENV</literal> variable set.
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'';
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};
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executor = mkOption {
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type = types.str;
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default = "docker";
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description = ''
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Select executor, eg. shell, docker, etc.
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See <link xlink:href="https://docs.gitlab.com/runner/executors/README.html">runner documentation</link> for more information.
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'';
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};
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buildsDir = mkOption {
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type = types.nullOr types.path;
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default = null;
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example = "/var/lib/gitlab-runner/builds";
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description = ''
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Absolute path to a directory where builds will be stored
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in context of selected executor (Locally, Docker, SSH).
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'';
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};
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cloneUrl = mkOption {
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type = types.nullOr types.str;
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default = null;
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example = "http://gitlab.example.local";
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description = ''
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Overwrite the URL for the GitLab instance. Used if the Runner can’t connect to GitLab on the URL GitLab exposes itself.
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'';
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};
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dockerImage = mkOption {
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type = types.nullOr types.str;
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default = null;
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description = ''
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Docker image to be used.
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'';
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};
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dockerVolumes = mkOption {
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type = types.listOf types.str;
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default = [ ];
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example = [ "/var/run/docker.sock:/var/run/docker.sock" ];
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description = ''
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Bind-mount a volume and create it
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if it doesn't exist prior to mounting.
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'';
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};
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dockerDisableCache = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Disable all container caching.
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'';
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};
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dockerPrivileged = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Give extended privileges to container.
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'';
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};
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dockerExtraHosts = mkOption {
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type = types.listOf types.str;
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default = [ ];
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example = [ "other-host:127.0.0.1" ];
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description = ''
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Add a custom host-to-IP mapping.
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'';
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};
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dockerAllowedImages = mkOption {
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type = types.listOf types.str;
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default = [ ];
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example = [ "ruby:*" "python:*" "php:*" "my.registry.tld:5000/*:*" ];
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description = ''
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Whitelist allowed images.
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'';
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};
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dockerAllowedServices = mkOption {
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type = types.listOf types.str;
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default = [ ];
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example = [ "postgres:9" "redis:*" "mysql:*" ];
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description = ''
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Whitelist allowed services.
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'';
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};
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preCloneScript = mkOption {
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type = types.nullOr types.path;
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default = null;
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description = ''
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Runner-specific command script executed before code is pulled.
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'';
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};
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preBuildScript = mkOption {
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type = types.nullOr types.path;
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default = null;
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description = ''
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Runner-specific command script executed after code is pulled,
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just before build executes.
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'';
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};
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postBuildScript = mkOption {
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type = types.nullOr types.path;
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default = null;
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description = ''
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Runner-specific command script executed after code is pulled
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and just after build executes.
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'';
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};
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tagList = mkOption {
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type = types.listOf types.str;
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default = [ ];
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description = ''
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Tag list.
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'';
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};
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runUntagged = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Register to run untagged builds; defaults to
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<literal>true</literal> when <option>tagList</option> is empty.
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'';
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};
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limit = mkOption {
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type = types.int;
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default = 0;
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description = ''
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Limit how many jobs can be handled concurrently by this service.
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0 (default) simply means don't limit.
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'';
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};
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requestConcurrency = mkOption {
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type = types.int;
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default = 0;
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description = ''
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Limit number of concurrent requests for new jobs from GitLab.
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'';
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};
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maximumTimeout = mkOption {
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type = types.int;
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default = 0;
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description = ''
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What is the maximum timeout (in seconds) that will be set for
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job when using this Runner. 0 (default) simply means don't limit.
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'';
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};
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protected = mkOption {
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type = types.bool;
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default = false;
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description = ''
|
||
When set to true Runner will only run on pipelines
|
||
triggered on protected branches.
|
||
'';
|
||
};
|
||
debugTraceDisabled = mkOption {
|
||
type = types.bool;
|
||
default = false;
|
||
description = ''
|
||
When set to true Runner will disable the possibility of
|
||
using the <literal>CI_DEBUG_TRACE</literal> feature.
|
||
'';
|
||
};
|
||
};
|
||
});
|
||
};
|
||
};
|
||
config = mkIf cfg.enable {
|
||
warnings = optional (cfg.configFile != null) "services.gitlab-runner.`configFile` is deprecated, please use services.gitlab-runner.`services`.";
|
||
environment.systemPackages = [ cfg.package ];
|
||
systemd.services.gitlab-runner = {
|
||
description = "Gitlab Runner";
|
||
documentation = [ "https://docs.gitlab.com/runner/" ];
|
||
after = [ "network.target" ]
|
||
++ optional hasDocker "docker.service";
|
||
requires = optional hasDocker "docker.service";
|
||
wantedBy = [ "multi-user.target" ];
|
||
environment = config.networking.proxy.envVars // {
|
||
HOME = "/var/lib/gitlab-runner";
|
||
};
|
||
path = with pkgs; [
|
||
bash
|
||
gawk
|
||
jq
|
||
moreutils
|
||
remarshal
|
||
util-linux
|
||
cfg.package
|
||
] ++ cfg.extraPackages;
|
||
reloadIfChanged = true;
|
||
serviceConfig = {
|
||
# Set `DynamicUser` under `systemd.services.gitlab-runner.serviceConfig`
|
||
# to `lib.mkForce false` in your configuration to run this service as root.
|
||
# You can also set `User` and `Group` options to run this service as desired user.
|
||
# Make sure to restart service or changes won't apply.
|
||
DynamicUser = true;
|
||
StateDirectory = "gitlab-runner";
|
||
SupplementaryGroups = optional hasDocker "docker";
|
||
ExecStartPre = "!${configureScript}/bin/gitlab-runner-configure";
|
||
ExecStart = "${startScript}/bin/gitlab-runner-start";
|
||
ExecReload = "!${configureScript}/bin/gitlab-runner-configure";
|
||
} // optionalAttrs (cfg.gracefulTermination) {
|
||
TimeoutStopSec = "${cfg.gracefulTimeout}";
|
||
KillSignal = "SIGQUIT";
|
||
KillMode = "process";
|
||
};
|
||
};
|
||
# Enable docker if `docker` executor is used in any service
|
||
virtualisation.docker.enable = mkIf (
|
||
any (s: s.executor == "docker") (attrValues cfg.services)
|
||
) (mkDefault true);
|
||
};
|
||
imports = [
|
||
(mkRenamedOptionModule [ "services" "gitlab-runner" "packages" ] [ "services" "gitlab-runner" "extraPackages" ] )
|
||
(mkRemovedOptionModule [ "services" "gitlab-runner" "configOptions" ] "Use services.gitlab-runner.services option instead" )
|
||
(mkRemovedOptionModule [ "services" "gitlab-runner" "workDir" ] "You should move contents of workDir (if any) to /var/lib/gitlab-runner" )
|
||
];
|
||
}
|