Remove systemd output redirection

Let systemd handle the output so the journal can be used. This also
let's the user configure if the journal stores the output of this
service to a file instead of setting the location.

Fixes #6824.

CHANGELOG.md

@@ -72,6 +72,7 @@
 - [#6771](https://github.com/influxdata/influxdb/issues/6771): Fix the point validation parser to identify and sort tags correctly.
 - [#6835](https://github.com/influxdata/influxdb/pull/6835): Include sysvinit-tools as an rpm dependency.
 - [#6834](https://github.com/influxdata/influxdb/pull/6834): Add port to all graphite log output to help with debugging multiple endpoints
+- [#6824](https://github.com/influxdata/influxdb/issues/6824): Remove systemd output redirection.
 
 ## v0.13.0 [2016-05-12]
 

scripts/influxdb.service

@@ -9,10 +9,8 @@ After=network-online.target
 User=influxdb
 Group=influxdb
 LimitNOFILE=65536
-Environment='STDOUT=/dev/null'
-Environment='STDERR=/var/log/influxdb/influxd.log'
 EnvironmentFile=-/etc/default/influxdb
-ExecStart=/bin/sh -c "/usr/bin/influxd -config /etc/influxdb/influxdb.conf ${INFLUXD_OPTS} >>${STDOUT} 2>>${STDERR}"
+ExecStart=/usr/bin/influxd -config /etc/influxdb/influxdb.conf ${INFLUXD_OPTS}
 KillMode=control-group
 Restart=on-failure