我是centos 6.7
我确定没有下排程去重开机，crontab里面只有三项工作，两项是把指定资料夹
内超过一个月的档案清掉，还有一项是yum -y update。全部都是凌晨作业。
我最近一个月发生过两次重开机，我原本以为有断电或是power不稳，不过
查过message后发现应该是正常重开机，
Mar 9 17:00:45 ORZ kernel: r8169 0000:02:00.0: eth0: link down
Mar 9 17:03:38 ORZ kernel: r8169 0000:02:00.0: eth0: link up
Mar 9 17:03:51 ORZ init: tty (/dev/tty1) main process (2231) killed by TERM
signal
Mar 9 17:03:51 ORZ init: tty (/dev/tty2) main process (2233) killed by TERM
signal
Mar 9 17:03:51 ORZ init: tty (/dev/tty3) main process (2235) killed by TERM
signal
Mar 9 17:03:51 ORZ init: tty (/dev/tty4) main process (2237) killed by TERM
signal
Mar 9 17:03:51 ORZ init: tty (/dev/tty5) main process (2239) killed by TERM
signal
Mar 9 17:03:51 ORZ init: tty (/dev/tty6) main process (2243) killed by TERM
signal
Mar 9 17:03:52 ORZ abrtd: Got signal 15, exiting
Mar 9 17:03:53 ORZ xinetd[2038]: Exiting...
Mar 9 17:03:57 ORZ acpid: exiting
Mar 9 17:04:08 ORZ openvpn[1697]: /sbin/ip route del 192.168.100.0/24
Mar 9 17:04:08 ORZ openvpn[1697]: ERROR: Linux route delete command failed:
external program exited with error status: 2
Mar 9 17:04:08 ORZ openvpn[1697]: Closing TUN/TAP interface
Mar 9 17:04:08 ORZ openvpn[1697]: /sbin/ip addr del dev tun0 local
192.168.100.1 peer 192.168.100.2
Mar 9 17:04:08 ORZ openvpn[1697]: Linux ip addr del failed: external program
exited with error status: 2
Mar 9 17:04:08 ORZ init: Disconnected from system bus
Mar 9 17:04:08 ORZ openvpn[1697]: SIGTERM[hard,] received, process exiting
Mar 9 17:04:08 ORZ console-kit-daemon[31704]: WARNING: no sender#012
Mar 9 17:04:08 ORZ rpcbind: rpcbind terminating on signal. Restart with
"rpcbind -w"
Mar 9 17:04:08 ORZ auditd[1490]: The audit daemon is exiting.
Mar 9 17:04:08 ORZ kernel: type=1305 audit(1457514248.550:7020): audit_pid=0
old=1490 auid=4294967295 ses=4294967295 subj=system_u:system_r:auditd_t:s0
res=1
Mar 9 17:04:08 ORZ kernel: type=1305 audit(1457514248.664:7021):
audit_enabled=0 old=1 auid=4294967295 ses=4294967295
subj=system_u:system_r:auditctl_t:s0 res=1
Mar 9 17:04:08 ORZ kernel: Kernel logging (proc) stopped.
Mar 9 17:04:08 ORZ rsyslogd: [origin software="rsyslogd" swVersion="5.8.10"
x-pid="1526" x-info="http://www.rsyslog.com"] exiting on signal 15.
Mar 9 17:07:14 ORZ kernel: imklog 5.8.10, log source = /proc/kmsg started.
Mar 9 17:07:14 ORZ rsyslogd: [origin software="rsyslogd" swVersion="5.8.10"
x-pid="1520" x-info="http://www.rsyslog.com"] start
Mar 9 17:07:14 ORZ kernel: Initializing cgroup subsys cpuset
Mar 9 17:07:14 ORZ kernel: Initializing cgroup subsys cpu
这样应该是有被下指定对吧？另外last也说
reboot system boot 2.6.32-573.18.1. Wed Mar 9 17:06 - 14:06 (3+20:59)
reboot system boot 2.6.32-573.18.1. Thu Mar 3 03:06 - 17:03 (6+13:57)
请问为什么会重开？