centos7安装collectd启动不起来，报这错, # systemctl status collectd.servicecollectd.service - SYSV: Collectd is a statistics gathering daemon used to collect system information ie. cpu, memory, disk, network   Loaded: loaded (/etc/rc.d/init.d/collectd)   Active: failed (Result: resources) since 二 2015-04-14 15:43:24 CST; 2min 56s ago  Process: 5135 ExecStart=/etc/rc.d/init.d/collectd start (code=exited, status=0/SUCCESS)4月 14 15:43:24 localhost.localdomain collectd : Starting collectd: not starting due to configuration error4月 14 15:43:24 localhost.localdomain collectd :  4月 14 15:43:24 localhost.localdomain systemd : PID file /var/run/collectd.pid not readable (yet?) after start.4月 14 15:43:24 localhost.localdomain systemd : Failed to start SYSV: Collectd is a statistics gathering daemon used to collect syste...etwork.4月 14 15:43:24 localhost.localdomain systemd : Unit collectd.service entered failed state.Hint: Some lines were ellipsized, use -l to show in full.