alioth/nixpkgs
3
0
Fork 0
forked from mirrors/nixpkgs
Code Releases Activity

graphite service: store PID files under /run and configure systemd to use them

Browse source 
The advantage of putting the PID file under the ephemeral /run is that
when the machine crashes /run gets cleared allowing graphite to start
once the machine is rebooted.

We also set the PIDFile systemd option so that systemd knows the correct
PID and enables systemd to remove the file after service shut down.
This commit is contained in:
Bas van Dijk 2015-11-28 12:18:33 +01:00
parent 10135e6f41
commit 3ac171cefb
1 changed files with 21 additions and 8 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

29
nixos/modules/services/monitoring/graphite.nix
View file

@ -41,8 +41,15 @@ let
};
carbonOpts = name: with config.ids; ''
--nodaemon --syslog --prefix=${name} --pidfile ${dataDir}/${name}.pid ${name}
--nodaemon --syslog --prefix=${name} --pidfile /run/${name}/${name}.pid ${name}
'';
mkPidFileDir = name: ''
mkdir -p /run/${name}
chmod 0700 /run/${name}
chown -R graphite:graphite /run/${name}
'';
carbonEnv = {
PYTHONPATH = "${pkgs.python27Packages.carbon}/lib/python2.7/site-packages";
GRAPHITE_ROOT = dataDir;
@ -370,18 +377,20 @@ in {
config = mkMerge [
(mkIf cfg.carbon.enableCache {
systemd.services.carbonCache = {
systemd.services.carbonCache = let name = "carbon-cache"; in {
description = "Graphite Data Storage Backend";
wantedBy = [ "multi-user.target" ];
after = [ "network-interfaces.target" ];
environment = carbonEnv;
serviceConfig = {
ExecStart = "${pkgs.twisted}/bin/twistd ${carbonOpts "carbon-cache"}";
ExecStart = "${pkgs.twisted}/bin/twistd ${carbonOpts name}";
User = "graphite";
Group = "graphite";
PermissionsStartOnly = true;
PIDFile="/run/${name}/${name}.pid";
};
preStart = ''
preStart = mkPidFileDir name + ''
mkdir -p ${cfg.dataDir}/whisper
chmod 0700 ${cfg.dataDir}/whisper
chown -R graphite:graphite ${cfg.dataDir}
@ -390,31 +399,35 @@ in {
})
(mkIf cfg.carbon.enableAggregator {
systemd.services.carbonAggregator = {
systemd.services.carbonAggregator = let name = "carbon-aggregator"; in {
enable = cfg.carbon.enableAggregator;
description = "Carbon Data Aggregator";
wantedBy = [ "multi-user.target" ];
after = [ "network-interfaces.target" ];
environment = carbonEnv;
serviceConfig = {
ExecStart = "${pkgs.twisted}/bin/twistd ${carbonOpts "carbon-aggregator"}";
ExecStart = "${pkgs.twisted}/bin/twistd ${carbonOpts name}";
User = "graphite";
Group = "graphite";
PIDFile="/run/${name}/${name}.pid";
};
preStart = mkPidFileDir name;
};
})
(mkIf cfg.carbon.enableRelay {
systemd.services.carbonRelay = {
systemd.services.carbonRelay = let name = "carbon-relay"; in {
description = "Carbon Data Relay";
wantedBy = [ "multi-user.target" ];
after = [ "network-interfaces.target" ];
environment = carbonEnv;
serviceConfig = {
ExecStart = "${pkgs.twisted}/bin/twistd ${carbonOpts "carbon-relay"}";
ExecStart = "${pkgs.twisted}/bin/twistd ${carbonOpts name}";
User = "graphite";
Group = "graphite";
PIDFile="/run/${name}/${name}.pid";
};
preStart = mkPidFileDir name;
};
})