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nixos/graphite: Make pure, fix several bugs, add dataDir option

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This commit is contained in:
Jaka Hudoklin 2014-03-10 10:57:51 +01:00
parent 086afe9161
commit b21d95e1f8
1 changed files with 57 additions and 37 deletions
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94
nixos/modules/services/monitoring/graphite.nix
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@ -4,17 +4,31 @@ with pkgs.lib;
let
cfg = config.services.graphite;
writeTextOrNull = f: t: if t == null then null else pkgs.writeText f t;
writeTextOrNull = f: t: if t == null then null else pkgs.writeTextDir f t;
dataDir = cfg.dataDir;
configDir = pkgs.buildEnv {
name = "graphite-config";
paths = lists.filter (el: el != null) [
(writeTextOrNull "carbon.conf" cfg.carbon.config)
(writeTextOrNull "storage-agregation.conf" cfg.carbon.storageAggregation)
(writeTextOrNull "storage-schemas.conf" cfg.carbon.storageSchemas)
(writeTextOrNull "blacklist.conf" cfg.carbon.blacklist)
(writeTextOrNull "whitelist.conf" cfg.carbon.whitelist)
(writeTextOrNull "rewrite-rules.conf" cfg.carbon.rewriteRules)
(writeTextOrNull "relay-rules.conf" cfg.carbon.relayRules)
(writeTextOrNull "aggregation-rules.conf" cfg.carbon.aggregationRules)
];
};
dataDir = "/var/db/graphite";
carbonOpts = name: with config.ids; ''
--nodaemon --syslog --prefix=${name} --pidfile /var/run/${name}.pid \
--uid ${toString uids.graphite} --gid ${toString uids.graphite} ${name}
--nodaemon --syslog --prefix=${name} --pidfile ${dataDir}/${name}.pid ${name}
'';
carbonEnv = {
PYTHONPATH = "${pkgs.python27Packages.carbon}/lib/python2.7/site-packages";
GRAPHITE_ROOT = dataDir;
GRAPHITE_CONF_DIR = "/etc/graphite/";
GRAPHITE_CONF_DIR = configDir;
GRAPHITE_STORAGE_DIR = dataDir;
};
@ -23,6 +37,14 @@ in {
###### interface
options.services.graphite = {
dataDir = mkOption {
type = types.path;
default = "/var/db/graphite";
description = ''
Data directory for graphite.
'';
};
web = {
enable = mkOption {
description = "Whether to enable graphite web frontend";
@ -38,8 +60,8 @@ in {
port = mkOption {
description = "Graphite web frontend port";
default = "8080";
type = types.str;
default = 8080;
type = types.int;
};
};
@ -152,31 +174,17 @@ in {
###### implementation
config = mkIf (cfg.carbon.enableAggregator || cfg.carbon.enableCache || cfg.carbon.enableRelay || cfg.web.enable) {
environment.etc = lists.filter (el: el.source != null) [
{ source = writeTextOrNull "carbon.conf" cfg.carbon.config;
target = "graphite/carbon.conf"; }
{ source = writeTextOrNull "storage-agregation.conf" cfg.carbon.storageAggregation;
target = "graphite/storage-agregation.conf"; }
{ source = writeTextOrNull "storage-schemas.conf" cfg.carbon.storageSchemas;
target = "graphite/storage-schemas.conf"; }
{ source = writeTextOrNull "blacklist.conf" cfg.carbon.blacklist;
target = "graphite/blacklist.conf"; }
{ source = writeTextOrNull "whitelist.conf" cfg.carbon.whitelist;
target = "graphite/whitelist.conf"; }
{ source = writeTextOrNull "rewrite-rules.conf" cfg.carbon.rewriteRules;
target = "graphite/rewrite-rules.conf"; }
{ source = writeTextOrNull "relay-rules.conf" cfg.carbon.relayRules;
target = "graphite/relay-rules.conf"; }
{ source = writeTextOrNull "aggregation-rules.conf" cfg.carbon.aggregationRules;
target = "graphite/aggregation-rules.conf"; }
];
systemd.services.carbonCache = mkIf cfg.carbon.enableCache {
systemd.services.carbonCache = {
enable = cfg.carbon.enableCache;
description = "Graphite Data Storage Backend";
wantedBy = [ "multi-user.target" ];
after = [ "network-interfaces.target" ];
environment = carbonEnv;
serviceConfig.ExecStart = "${pkgs.twisted}/bin/twistd ${carbonOpts "carbon-cache"}";
serviceConfig = {
ExecStart = "${pkgs.twisted}/bin/twistd ${carbonOpts "carbon-cache"}";
User = "graphite";
Group = "graphite";
};
restartTriggers = [
pkgs.pythonPackages.carbon
cfg.carbon.config
@ -185,33 +193,45 @@ in {
cfg.carbon.rewriteRules
];
preStart = ''
mkdir -p ${dataDir}/whisper
mkdir -m 0700 -p ${cfg.dataDir}/whisper
if [ "$(id -u)" = 0 ]; then chown -R graphite:graphite ${cfg.dataDir}; fi
'';
};
systemd.services.carbonAggregator = mkIf cfg.carbon.enableAggregator {
systemd.services.carbonAggregator = {
enable = cfg.carbon.enableAggregator;
description = "Carbon Data Aggregator";
wantedBy = [ "multi-user.target" ];
after = [ "network-interfaces.target" ];
environment = carbonEnv;
serviceConfig.ExecStart = "${pkgs.twisted}/bin/twistd ${carbonOpts "carbon-aggregator"}";
serviceConfig = {
ExecStart = "${pkgs.twisted}/bin/twistd ${carbonOpts "carbon-aggregator"}";
User = "graphite";
Group = "graphite";
};
restartTriggers = [
pkgs.pythonPackages.carbon cfg.carbon.config cfg.carbon.aggregationRules
];
};
systemd.services.carbonRelay = mkIf cfg.carbon.enableRelay {
systemd.services.carbonRelay = {
enable = cfg.carbon.enableRelay;
description = "Carbon Data Relay";
wantedBy = [ "multi-user.target" ];
after = [ "network-interfaces.target" ];
environment = carbonEnv;
serviceConfig.ExecStart = "${pkgs.twisted}/bin/twistd ${carbonOpts "carbon-relay"}";
serviceConfig = {
ExecStart = "${pkgs.twisted}/bin/twistd ${carbonOpts "carbon-relay"}";
User = "graphite";
Group = "graphite";
};
restartTriggers = [
pkgs.pythonPackages.carbon cfg.carbon.config cfg.carbon.relayRules
];
};
systemd.services.graphiteWeb = mkIf cfg.web.enable {
systemd.services.graphiteWeb = {
enable = cfg.web.enable;
description = "Graphite Web Interface";
wantedBy = [ "multi-user.target" ];
after = [ "network-interfaces.target" ];
@ -224,14 +244,15 @@ in {
serviceConfig = {
ExecStart = ''
${pkgs.python27Packages.waitress}/bin/waitress-serve \
--host=${cfg.web.host} --port=${cfg.web.port} \
--host=${cfg.web.host} --port=${toString cfg.web.port} \
--call django.core.handlers.wsgi:WSGIHandler'';
User = "graphite";
Group = "graphite";
};
preStart = ''
if ! test -e ${dataDir}/db-created; then
mkdir -p ${dataDir}/{whisper/,log/webapp/}
mkdir -m 0700 -p ${dataDir}/{whisper/,log/webapp/}
if [ "$(id -u)" = 0 ]; then chown -R graphite:graphite ${cfg.dataDir}; fi
# populate database
${pkgs.python27Packages.graphite_web}/bin/manage-graphite.py syncdb --noinput
@ -259,7 +280,6 @@ in {
uid = config.ids.uids.graphite;
description = "Graphite daemon user";
home = dataDir;
createHome = true;
};
users.extraGroups.graphite.gid = config.ids.gids.graphite;
};