forked from lix-project/hydra
ee2e9f5335
BinaryCacheStore no longer implements buildPaths() and ensurePath(), so we need to use copyPath() / copyClosure().
422 lines
13 KiB
Nix
422 lines
13 KiB
Nix
{ config, pkgs, lib ? pkgs.lib, ... }:
|
|
|
|
with lib;
|
|
|
|
let
|
|
|
|
cfg = config.services.hydra;
|
|
|
|
baseDir = "/var/lib/hydra";
|
|
|
|
hydraConf = pkgs.writeScript "hydra.conf" cfg.extraConfig;
|
|
|
|
hydraEnv =
|
|
{ HYDRA_DBI = cfg.dbi;
|
|
HYDRA_CONFIG = "${baseDir}/hydra.conf";
|
|
HYDRA_DATA = "${baseDir}";
|
|
};
|
|
|
|
env =
|
|
{ NIX_REMOTE = "daemon";
|
|
SSL_CERT_FILE = "/etc/ssl/certs/ca-certificates.crt"; # Remove in 16.03
|
|
PGPASSFILE = "${baseDir}/pgpass";
|
|
NIX_REMOTE_SYSTEMS = concatStringsSep ":" cfg.buildMachinesFiles;
|
|
} // optionalAttrs (cfg.smtpHost != null) {
|
|
EMAIL_SENDER_TRANSPORT = "SMTP";
|
|
EMAIL_SENDER_TRANSPORT_host = cfg.smtpHost;
|
|
} // hydraEnv // cfg.extraEnv;
|
|
|
|
serverEnv = env //
|
|
{ HYDRA_TRACKER = cfg.tracker;
|
|
COLUMNS = "80";
|
|
PGPASSFILE = "${baseDir}/pgpass-www"; # grrr
|
|
} // (optionalAttrs cfg.debugServer { DBIC_TRACE = "1"; });
|
|
|
|
localDB = "dbi:Pg:dbname=hydra;user=hydra;";
|
|
|
|
haveLocalDB = cfg.dbi == localDB;
|
|
|
|
in
|
|
|
|
{
|
|
###### interface
|
|
options = {
|
|
|
|
services.hydra = rec {
|
|
|
|
enable = mkOption {
|
|
type = types.bool;
|
|
default = false;
|
|
description = ''
|
|
Whether to run Hydra services.
|
|
'';
|
|
};
|
|
|
|
dbi = mkOption {
|
|
type = types.str;
|
|
default = localDB;
|
|
example = "dbi:Pg:dbname=hydra;host=postgres.example.org;user=foo;";
|
|
description = ''
|
|
The DBI string for Hydra database connection.
|
|
'';
|
|
};
|
|
|
|
package = mkOption {
|
|
type = types.path;
|
|
#default = pkgs.hydra;
|
|
description = "The Hydra package.";
|
|
};
|
|
|
|
hydraURL = mkOption {
|
|
type = types.str;
|
|
description = ''
|
|
The base URL for the Hydra webserver instance. Used for links in emails.
|
|
'';
|
|
};
|
|
|
|
listenHost = mkOption {
|
|
type = types.str;
|
|
default = "*";
|
|
example = "localhost";
|
|
description = ''
|
|
The hostname or address to listen on or <literal>*</literal> to listen
|
|
on all interfaces.
|
|
'';
|
|
};
|
|
|
|
port = mkOption {
|
|
type = types.int;
|
|
default = 3000;
|
|
description = ''
|
|
TCP port the web server should listen to.
|
|
'';
|
|
};
|
|
|
|
minimumDiskFree = mkOption {
|
|
type = types.int;
|
|
default = 0;
|
|
description = ''
|
|
Threshold of minimum disk space (GiB) to determine if the queue runner should run or not.
|
|
'';
|
|
};
|
|
|
|
minimumDiskFreeEvaluator = mkOption {
|
|
type = types.int;
|
|
default = 0;
|
|
description = ''
|
|
Threshold of minimum disk space (GiB) to determine if the evaluator should run or not.
|
|
'';
|
|
};
|
|
|
|
notificationSender = mkOption {
|
|
type = types.str;
|
|
description = ''
|
|
Sender email address used for email notifications.
|
|
'';
|
|
};
|
|
|
|
smtpHost = mkOption {
|
|
type = types.nullOr types.str;
|
|
default = null;
|
|
example = ["localhost"];
|
|
description = ''
|
|
Hostname of the SMTP server to use to send email.
|
|
'';
|
|
};
|
|
|
|
tracker = mkOption {
|
|
type = types.str;
|
|
default = "";
|
|
description = ''
|
|
Piece of HTML that is included on all pages.
|
|
'';
|
|
};
|
|
|
|
logo = mkOption {
|
|
type = types.nullOr types.path;
|
|
default = null;
|
|
description = ''
|
|
Path to a file containing the logo of your Hydra instance.
|
|
'';
|
|
};
|
|
|
|
debugServer = mkOption {
|
|
type = types.bool;
|
|
default = false;
|
|
description = "Whether to run the server in debug mode.";
|
|
};
|
|
|
|
extraConfig = mkOption {
|
|
type = types.lines;
|
|
description = "Extra lines for the Hydra configuration.";
|
|
};
|
|
|
|
extraEnv = mkOption {
|
|
type = types.attrsOf types.str;
|
|
default = {};
|
|
description = "Extra environment variables for Hydra.";
|
|
};
|
|
|
|
gcRootsDir = mkOption {
|
|
type = types.path;
|
|
default = "/nix/var/nix/gcroots/hydra";
|
|
description = "Directory that holds Hydra garbage collector roots.";
|
|
};
|
|
|
|
buildMachinesFiles = mkOption {
|
|
type = types.listOf types.path;
|
|
default = [ "/etc/nix/machines" ];
|
|
example = [ "/etc/nix/machines" "/var/lib/hydra/provisioner/machines" ];
|
|
description = "List of files containing build machines.";
|
|
};
|
|
|
|
useSubstitutes = mkOption {
|
|
type = types.bool;
|
|
default = false;
|
|
description = ''
|
|
Whether to use binary caches for downloading store paths. Note that
|
|
binary substitutions trigger (a potentially large number of) additional
|
|
HTTP requests that slow down the queue monitor thread significantly.
|
|
Also, this Hydra instance will serve those downloaded store paths to
|
|
its users with its own signature attached as if it had built them
|
|
itself, so don't enable this feature unless your active binary caches
|
|
are absolute trustworthy.
|
|
'';
|
|
};
|
|
};
|
|
|
|
};
|
|
|
|
|
|
###### implementation
|
|
|
|
config = mkIf cfg.enable {
|
|
|
|
users.extraGroups.hydra = { };
|
|
|
|
users.extraUsers.hydra =
|
|
{ description = "Hydra";
|
|
group = "hydra";
|
|
createHome = true;
|
|
home = baseDir;
|
|
useDefaultShell = true;
|
|
};
|
|
|
|
users.extraUsers.hydra-queue-runner =
|
|
{ description = "Hydra queue runner";
|
|
group = "hydra";
|
|
useDefaultShell = true;
|
|
home = "${baseDir}/queue-runner"; # really only to keep SSH happy
|
|
};
|
|
|
|
users.extraUsers.hydra-www =
|
|
{ description = "Hydra web server";
|
|
group = "hydra";
|
|
useDefaultShell = true;
|
|
};
|
|
|
|
nix.trustedUsers = [ "hydra-queue-runner" ];
|
|
|
|
services.hydra.package = mkDefault ((import ./release.nix {}).build.x86_64-linux);
|
|
|
|
services.hydra.extraConfig =
|
|
''
|
|
using_frontend_proxy 1
|
|
base_uri ${cfg.hydraURL}
|
|
notification_sender ${cfg.notificationSender}
|
|
max_servers 25
|
|
compress_num_threads 0
|
|
${optionalString (cfg.logo != null) ''
|
|
hydra_logo ${cfg.logo}
|
|
''}
|
|
gc_roots_dir ${cfg.gcRootsDir}
|
|
use-substitutes ${if cfg.useSubstitutes then "1" else "0"}
|
|
'';
|
|
|
|
environment.systemPackages = [ cfg.package ];
|
|
|
|
environment.variables = hydraEnv;
|
|
|
|
nix.extraOptions = ''
|
|
gc-keep-outputs = true
|
|
gc-keep-derivations = true
|
|
|
|
# The default (`true') slows Nix down a lot since the build farm
|
|
# has so many GC roots.
|
|
gc-check-reachability = false
|
|
'';
|
|
|
|
systemd.services.hydra-init =
|
|
{ wantedBy = [ "multi-user.target" ];
|
|
requires = optional haveLocalDB "postgresql.service";
|
|
after = optional haveLocalDB "postgresql.service";
|
|
environment = env;
|
|
preStart = ''
|
|
mkdir -p ${baseDir}
|
|
chown hydra.hydra ${baseDir}
|
|
chmod 0750 ${baseDir}
|
|
|
|
ln -sf ${hydraConf} ${baseDir}/hydra.conf
|
|
|
|
mkdir -m 0700 -p ${baseDir}/www
|
|
chown hydra-www.hydra ${baseDir}/www
|
|
|
|
mkdir -m 0700 -p ${baseDir}/queue-runner
|
|
mkdir -m 0750 -p ${baseDir}/build-logs
|
|
chown hydra-queue-runner.hydra ${baseDir}/queue-runner ${baseDir}/build-logs
|
|
|
|
${optionalString haveLocalDB ''
|
|
if ! [ -e ${baseDir}/.db-created ]; then
|
|
${config.services.postgresql.package}/bin/createuser hydra
|
|
${config.services.postgresql.package}/bin/createdb -O hydra hydra
|
|
touch ${baseDir}/.db-created
|
|
fi
|
|
''}
|
|
|
|
if [ ! -e ${cfg.gcRootsDir} ]; then
|
|
|
|
# Move legacy roots directory.
|
|
if [ -e /nix/var/nix/gcroots/per-user/hydra/hydra-roots ]; then
|
|
mv /nix/var/nix/gcroots/per-user/hydra/hydra-roots ${cfg.gcRootsDir}
|
|
fi
|
|
|
|
mkdir -p ${cfg.gcRootsDir}
|
|
fi
|
|
|
|
# Move legacy hydra-www roots.
|
|
if [ -e /nix/var/nix/gcroots/per-user/hydra-www/hydra-roots ]; then
|
|
find /nix/var/nix/gcroots/per-user/hydra-www/hydra-roots/ -type f \
|
|
| xargs -r mv -f -t ${cfg.gcRootsDir}/
|
|
rmdir /nix/var/nix/gcroots/per-user/hydra-www/hydra-roots
|
|
fi
|
|
|
|
chown hydra.hydra ${cfg.gcRootsDir}
|
|
chmod 2775 ${cfg.gcRootsDir}
|
|
'';
|
|
serviceConfig.ExecStart = "${cfg.package}/bin/hydra-init";
|
|
serviceConfig.PermissionsStartOnly = true;
|
|
serviceConfig.User = "hydra";
|
|
serviceConfig.Type = "oneshot";
|
|
serviceConfig.RemainAfterExit = true;
|
|
};
|
|
|
|
systemd.services.hydra-server =
|
|
{ wantedBy = [ "multi-user.target" ];
|
|
requires = [ "hydra-init.service" ];
|
|
after = [ "hydra-init.service" ];
|
|
environment = serverEnv;
|
|
serviceConfig =
|
|
{ ExecStart =
|
|
"@${cfg.package}/bin/hydra-server hydra-server -f -h '${cfg.listenHost}' "
|
|
+ "-p ${toString cfg.port} --max_spare_servers 5 --max_servers 25 "
|
|
+ "--max_requests 100 ${optionalString cfg.debugServer "-d"}";
|
|
User = "hydra-www";
|
|
PermissionsStartOnly = true;
|
|
Restart = "always";
|
|
};
|
|
};
|
|
|
|
systemd.services.hydra-queue-runner =
|
|
{ wantedBy = [ "multi-user.target" ];
|
|
requires = [ "hydra-init.service" ];
|
|
after = [ "hydra-init.service" "network.target" ];
|
|
path = [ cfg.package pkgs.nettools pkgs.openssh pkgs.bzip2 config.nix.package ];
|
|
environment = env // {
|
|
PGPASSFILE = "${baseDir}/pgpass-queue-runner"; # grrr
|
|
IN_SYSTEMD = "1"; # to get log severity levels
|
|
};
|
|
serviceConfig =
|
|
{ ExecStart = "@${cfg.package}/bin/hydra-queue-runner hydra-queue-runner -v";
|
|
ExecStopPost = "${cfg.package}/bin/hydra-queue-runner --unlock";
|
|
User = "hydra-queue-runner";
|
|
Restart = "always";
|
|
|
|
# Ensure we can get core dumps.
|
|
LimitCORE = "infinity";
|
|
WorkingDirectory = "${baseDir}/queue-runner";
|
|
};
|
|
};
|
|
|
|
systemd.services.hydra-evaluator =
|
|
{ wantedBy = [ "multi-user.target" ];
|
|
requires = [ "hydra-init.service" ];
|
|
after = [ "hydra-init.service" "network.target" ];
|
|
path = [ pkgs.nettools ];
|
|
environment = env;
|
|
serviceConfig =
|
|
{ ExecStart = "@${cfg.package}/bin/hydra-evaluator hydra-evaluator";
|
|
User = "hydra";
|
|
Restart = "always";
|
|
WorkingDirectory = baseDir;
|
|
};
|
|
};
|
|
|
|
systemd.services.hydra-update-gc-roots =
|
|
{ requires = [ "hydra-init.service" ];
|
|
after = [ "hydra-init.service" ];
|
|
environment = env;
|
|
serviceConfig =
|
|
{ ExecStart = "@${cfg.package}/bin/hydra-update-gc-roots hydra-update-gc-roots";
|
|
User = "hydra";
|
|
};
|
|
startAt = "2,14:15";
|
|
};
|
|
|
|
systemd.services.hydra-send-stats =
|
|
{ wantedBy = [ "multi-user.target" ];
|
|
after = [ "hydra-init.service" ];
|
|
environment = env;
|
|
serviceConfig =
|
|
{ ExecStart = "@${cfg.package}/bin/hydra-send-stats hydra-send-stats";
|
|
User = "hydra";
|
|
};
|
|
};
|
|
|
|
# If there is less than a certain amount of free disk space, stop
|
|
# the queue/evaluator to prevent builds from failing or aborting.
|
|
systemd.services.hydra-check-space =
|
|
{ script =
|
|
''
|
|
if [ $(($(stat -f -c '%a' /nix/store) * $(stat -f -c '%S' /nix/store))) -lt $((${toString cfg.minimumDiskFree} * 1024**3)) ]; then
|
|
echo "stopping Hydra queue runner due to lack of free space..."
|
|
systemctl stop hydra-queue-runner
|
|
fi
|
|
if [ $(($(stat -f -c '%a' /nix/store) * $(stat -f -c '%S' /nix/store))) -lt $((${toString cfg.minimumDiskFreeEvaluator} * 1024**3)) ]; then
|
|
echo "stopping Hydra evaluator due to lack of free space..."
|
|
systemctl stop hydra-evaluator
|
|
fi
|
|
'';
|
|
startAt = "*:0/5";
|
|
};
|
|
|
|
# Periodically compress build logs. The queue runner compresses
|
|
# logs automatically after a step finishes, but this doesn't work
|
|
# if the queue runner is stopped prematurely.
|
|
systemd.services.hydra-compress-logs =
|
|
{ path = [ pkgs.bzip2 ];
|
|
script =
|
|
''
|
|
find /var/lib/hydra/build-logs -type f -name "*.drv" -mtime +3 -size +0c | xargs -r bzip2 -v -f
|
|
'';
|
|
startAt = "Sun 01:45";
|
|
};
|
|
|
|
services.postgresql.enable = mkIf haveLocalDB true;
|
|
|
|
services.postgresql.identMap = optionalString haveLocalDB
|
|
''
|
|
hydra-users hydra hydra
|
|
hydra-users hydra-queue-runner hydra
|
|
hydra-users hydra-www hydra
|
|
hydra-users root hydra
|
|
'';
|
|
|
|
services.postgresql.authentication = optionalString haveLocalDB
|
|
''
|
|
local hydra all ident map=hydra-users
|
|
'';
|
|
|
|
};
|
|
|
|
}
|