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Add graphite, scalable realtime graphing service

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wip/yesman
Jaka Hudoklin 11 years ago
parent 51c84aadaa
commit b244a47185
3 changed files with 238 additions and 0 deletions
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  1. 2
      modules/misc/ids.nix
  2. 1
      modules/module-list.nix
  3. 235
      modules/services/monitoring/graphite.nix

2
modules/misc/ids.nix
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@ -80,6 +80,7 @@ in
smtpq = 64;
supybot = 65;
iodined = 66;
graphite = 67;
# When adding a uid, make sure it doesn't match an existing gid.
@ -143,6 +144,7 @@ in
smtpq = 64;
supybot = 65;
iodined = 66;
graphite = 67;
# When adding a gid, make sure it doesn't match an existing uid.

1
modules/module-list.nix
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@ -121,6 +121,7 @@
./services/misc/synergy.nix
./services/monitoring/apcupsd.nix
./services/monitoring/dd-agent.nix
./services/monitoring/graphite.nix
./services/monitoring/monit.nix
./services/monitoring/nagios/default.nix
./services/monitoring/smartd.nix

235
modules/services/monitoring/graphite.nix
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@ -0,0 +1,235 @@
{ config, pkgs, ... }:
with pkgs.lib;
let
cfg = config.services.graphite;
writeTextOrNull = f: t: if t == null then null else pkgs.writeText f t;
dataDir = "/var/db/graphite";
in {
###### interface
options.services.graphite = {
carbon = mkOption {
description = "Content of carbon configuration file";
default = "";
type = types.uniq types.string;
};
enableCarbonCache = mkOption {
description = "Whether to enable carbon cache, the graphite storage daemon";
default = false;
type = types.uniq types.bool;
};
storageAggregation = mkOption {
description = "Defines how to aggregate data to lower-precision retentions";
default = null;
type = types.uniq (types.nullOr types.string);
example = ''
[all_min]
pattern = \.min$
xFilesFactor = 0.1
aggregationMethod = min
'';
};
storageSchemas = mkOption {
description = "Defines retention rates for storing metrics";
default = "";
type = types.uniq (types.nullOr types.string);
example = ''
[apache_busyWorkers]
pattern = ^servers\.www.*\.workers\.busyWorkers$
retentions = 15s:7d,1m:21d,15m:5y
'';
};
blacklist = mkOption {
description = "Any metrics received which match one of the experssions will be dropped";
default = null;
type = types.uniq (types.nullOr types.string);
example = "^some\.noisy\.metric\.prefix\..*";
};
whitelist = mkOption {
description = "Only metrics received which match one of the experssions will be persisted";
default = null;
type = types.uniq (types.nullOr types.string);
example = ".*";
};
rewriteRules = mkOption {
description = "Regular expression patterns that can be used to rewrite metric names in a search and replace fashion";
default = null;
type = types.uniq (types.nullOr types.string);
example = ''
[post]
_sum$ =
_avg$ =
'';
};
enableCarbonRelay = mkOption {
description = "Whether to enable carbon relay, the carbon replication and sharding service";
default = false;
type = types.uniq types.bool;
};
relayRules = mkOption {
description = "Relay rules are used to send certain metrics to a certain backend.";
default = null;
type = types.uniq (types.nullOr types.string);
example = ''
[example]
pattern = ^mydata\.foo\..+
servers = 10.1.2.3, 10.1.2.4:2004, myserver.mydomain.com
'';
};
enableCarbonAggregator = mkOption {
description = "Whether to enable carbon agregator, the carbon buffering service";
default = false;
type = types.uniq types.bool;
};
aggregationRules = mkOption {
description = "Defines if and how received metrics will be agregated";
default = null;
type = types.uniq (types.nullOr types.string);
example = ''
<env>.applications.<app>.all.requests (60) = sum <env>.applications.<app>.*.requests
<env>.applications.<app>.all.latency (60) = avg <env>.applications.<app>.*.latency
'';
};
enableGraphiteWeb = mkOption {
description = "Whether to enable graphite web frontend";
default = false;
type = types.uniq types.bool;
};
};
###### implementation
config = mkIf (cfg.enableCarbonAggregator || cfg.enableCarbonCache || cfg.enableCarbonRelay || cfg.enableGraphiteWeb) {
environment.etc = lists.filter (el: el.source != null) [
{ source = writeTextOrNull "carbon.conf" cfg.carbon;
target = "graphite/carbon.conf"; }
{ source = writeTextOrNull "storage-agregation.conf" cfg.storageAggregation;
target = "graphite/storage-agregation.conf"; }
{ source = writeTextOrNull "storage-schemas.conf" cfg.storageSchemas;
target = "graphite/storage-schemas.conf"; }
{ source = writeTextOrNull "blacklist.conf" cfg.blacklist;
target = "graphite/blacklist.conf"; }
{ source = writeTextOrNull "whitelist.conf" cfg.whitelist;
target = "graphite/whitelist.conf"; }
{ source = writeTextOrNull "rewrite-rules.conf" cfg.rewriteRules;
target = "graphite/rewrite-rules.conf"; }
{ source = writeTextOrNull "relay-rules.conf" cfg.relayRules;
target = "graphite/relay-rules.conf"; }
{ source = writeTextOrNull "aggregation-rules.conf" cfg.aggregationRules;
target = "graphite/aggregation-rules.conf"; }
];
systemd.services.carbonCache = mkIf cfg.enableCarbonCache {
description = "Graphite data storage backend";
wantedBy = [ "multi-user.target" ];
after = [ "network-interfaces.target" ];
environment = {
GRAPHITE_CONF_DIR = "/etc/graphite/";
GRAPHITE_STORAGE_DIR = "/var/db/graphite/";
};
serviceConfig = {
ExecStart = "${pkgs.pythonPackages.carbon}/bin/carbon-cache.py --debug --pidfile /tmp/carbonCache.pid start";
User = "graphite";
Group = "graphite";
};
restartTriggers = [
pkgs.pythonPackages.carbon cfg.carbon
cfg.storageAggregation cfg.storageSchemas cfg.rewriteRules
];
preStart = ''
mkdir -p ${dataDir}/whisper
'';
};
systemd.services.carbonAggregator = mkIf cfg.enableCarbonAggregator {
description = "Carbon data aggregator";
wantedBy = [ "multi-user.target" ];
after = [ "network-interfaces.target" ];
environment = {
GRAPHITE_CONF_DIR = "/etc/graphite/";
GRAPHITE_STORAGE_DIR = "${dataDir}";
};
serviceConfig = {
ExecStart = "${pkgs.pythonPackages.carbon}/bin/carbon-aggregator.py --debug --pidfile /tmp/carbonAggregator.pid start";
User = "graphite";
Group = "graphite";
};
restartTriggers = [ pkgs.pythonPackages.carbon cfg.carbon cfg.aggregationRules ];
};
systemd.services.carbonRelay = mkIf cfg.enableCarbonRelay {
description = "Carbon data relay";
wantedBy = [ "multi-user.target" ];
after = [ "network-interfaces.target" ];
environment = {
GRAPHITE_CONF_DIR = "/etc/graphite/";
GRAPHITE_STORAGE_DIR = "${dataDir}";
};
serviceConfig = {
ExecStart = "${pkgs.pythonPackages.carbon}/bin/carbon-relay.py --debug --pidfile /tmp/carbonRelay.pid start";
User = "graphite";
Group = "graphite";
};
restartTriggers = [ pkgs.pythonPackages.carbon cfg.carbon cfg.relayRules ];
};
systemd.services.graphiteWeb = mkIf cfg.enableGraphiteWeb {
description = "Graphite web interface";
wantedBy = [ "multi-user.target" ];
after = [ "network-interfaces.target" ];
environment = {
GRAPHITE_CONF_DIR = "/etc/graphite/";
GRAPHITE_STORAGE_DIR = "${dataDir}";
};
serviceConfig = {
ExecStart = "${pkgs.pythonPackages.graphite_web}/bin/run-graphite-devel-server.py ${pkgs.pythonPackages.graphite_web}";
User = "graphite";
Group = "graphite";
};
preStart = ''
if ! test -e ${dataDir}/db-created; then
mkdir -p ${dataDir}/{whisper/,log/webapp/}
# populate database
${pkgs.pythonPackages.graphite_web}/bin/manage-graphite.py syncdb --noinput
# create index
${pkgs.pythonPackages.graphite_web}/bin/build-index.sh
touch ${dataDir}/db-created
fi
'';
restartTriggers = [ pkgs.pythonPackages.graphite_web ];
};
environment.systemPackages = [
pkgs.pythonPackages.carbon pkgs.pythonPackages.graphite_web pkgs.pythonPackages.django_1_3
];
users.extraUsers = singleton {
name = "graphite";
uid = config.ids.uids.graphite;
description = "Graphite daemon user";
home = "${dataDir}";
createHome = true;
};
users.extraGroups.graphite.gid = config.ids.gids.graphite;
};
}
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