linux服务器自动重启，不知道什么原因，求高手指点

[super5571]

[root@localhost ~]# last
reboot system boot 2.6.32-220.el6.x Tue Aug 26 15:47 - 15:17 (5+23:29)


查看/var/log/messages：
Aug 26 03:42:02 localhost rhsmd: This system is missing one or more valid entitlement certificates. Please run subscription-manager for more information.
Aug 26 15:40:34 localhost init: tty (/dev/tty2) main process (3007) killed by TERM signal
Aug 26 15:40:34 localhost init: tty (/dev/tty3) main process (3009) killed by TERM signal
Aug 26 15:40:34 localhost init: tty (/dev/tty4) main process (3011) killed by TERM signal
Aug 26 15:40:34 localhost init: tty (/dev/tty5) main process (3013) killed by TERM signal
Aug 26 15:40:34 localhost init: tty (/dev/tty6) main process (3015) killed by TERM signal
Aug 26 15:40:34 localhost NetworkManager[2505]: <error> [1409038834.204543] [nm-manager.c:1360] user_proxy_init(): could not init user settings proxy: (3) Could not get owner of name 'org.freedesktop.NetworkManagerUserSettings': no such name
Aug 26 15:40:35 localhost qpidd[2909]: 2014-08-26 15:40:35 notice Shut down
Aug 26 15:40:35 localhost abrtd: Got signal 15, exiting
Aug 26 15:40:39 localhost acpid: exiting
Aug 26 15:40:39 localhost ntpd[2786]: ntpd exiting on signal 15
Aug 26 15:40:39 localhost pcscd: pcscdaemon.c:581:signal_trap() Preparing for suicide
Aug 26 15:40:40 localhost pcscd: readerfactory.c:1267:RFCleanupReaders() entering cleaning function
Aug 26 15:40:40 localhost pcscd: pcscdaemon.c:531:at_exit() cleaning /var/run
Aug 26 15:40:40 localhost NetworkManager[2505]: <info> caught signal 15, shutting down normally.
Aug 26 15:40:40 localhost NetworkManager[2505]: <info> (eth1): cleaning up...
Aug 26 15:40:40 localhost NetworkManager[2505]: <info> (eth1): taking down device.
Aug 26 15:40:40 localhost NetworkManager[2505]: <info> exiting (success)
Aug 26 15:40:41 localhost rpcbind: rpcbind terminating on signal. Restart with "rpcbind -w"
Aug 26 15:40:41 localhost init: Disconnected from system bus
Aug 26 15:40:41 localhost auditd[2307]: The audit daemon is exiting.
Aug 26 15:40:41 localhost kernel: type=1305 audit(1409038841.908:4045): audit_pid=0 old=2307 auid=4294967295 ses=4294967295 subj=system_u:system_r:auditd_t:s0 res=1
Aug 26 15:40:42 localhost kernel: type=1305 audit(1409038842.007:4046): audit_enabled=0 old=1 auid=4294967295 ses=4294967295 subj=system_u:system_r:auditctl_t:s0 res=1
Aug 26 15:40:42 localhost kernel: Kernel logging (proc) stopped.
Aug 26 15:40:42 localhost rsyslogd: [origin software="rsyslogd" swVersion="4.6.2" x-pid="2332" x-info="http://www.rsyslog.com"] exiting on signal 15.
Aug 26 15:48:22 localhost kernel: imklog 4.6.2, log source = /proc/kmsg started.
Aug 26 15:48:22 localhost rsyslogd: [origin software="rsyslogd" swVersion="4.6.2" x-pid="2387" x-info="http://www.rsyslog.com"] (re)start
Aug 26 15:48:22 localhost kernel: Initializing cgroup subsys cpuset
Aug 26 15:48:22 localhost kernel: Initializing cgroup subsys cpu
Aug 26 15:48:22 localhost kernel: Linux version 2.6.32-220.el6.x86_64 ([e-mail]) (gcc version 4.4.5 20110214 (Red Hat 4.4.5-6) (GCC) ) #1 SMP Wed Nov 9 08:03:13 EST 2011
Aug 26 15:48:22 localhost kernel: Command line: ro root=/dev/mapper/VolGroup-lv_root nomodeset rd_NO_LUKS rd_NO_MD rd_LVM_LV=VolGroup/lv_swap quiet rhgb crashkernel=128M LANG=zh_CN.UTF-8 rd_LVM_LV=VolGroup/lv_root KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM
Aug 26 15:48:22 localhost kernel: KERNEL supported cpus:
Aug 26 15:48:22 localhost kernel: Intel GenuineIntel
Aug 26 15:48:22 localhost kernel: AMD AuthenticAMD
Aug 26 15:48:22 localhost kernel: Centaur CentaurHauls
Aug 26 15:48:22 localhost kernel: BIOS-provided physical RAM map:
Aug 26 15:48:22 localhost kernel: BIOS-e820: 0000000000000000 - 0000000000094c00 (usable)
Aug 26 15:48:22 localhost kernel: BIOS-e820: 0000000000094c00 - 00000000000a0000 (reserved)
Aug 26 15:48:22 localhost kernel: BIOS-e820: 00000000000e0000 - 0000000000100000 (reserved)
Aug 26 15:48:22 localhost kernel: BIOS-e820: 0000000000100000 - 000000008c39b000 (usable)
Aug 26 15:48:22 localhost kernel: BIOS-e820: 000000008c39b000 - 000000008c471000 (ACPI NVS)
Aug 26 15:48:22 localhost kernel: BIOS-e820: 000000008c471000 - 000000008c59f000 (ACPI data)
Aug 26 15:48:22 localhost kernel: BIOS-e820: 000000008c59f000 - 000000008d99f000 (ACPI NVS)
Aug 26 15:48:22 localhost kernel: BIOS-e820: 000000008d99f000 - 000000008f602000 (ACPI data)
Aug 26 15:48:22 localhost kernel: BIOS-e820: 000000008f602000 - 000000008f64f000 (reserved)
Aug 26 15:48:22 localhost kernel: BIOS-e820: 000000008f64f000 - 000000008f6e7000 (ACPI data)
Aug 26 15:48:22 localhost kernel: BIOS-e820: 000000008f6e7000 - 000000008f6f0000 (ACPI NVS)
Aug 26 15:48:22 localhost kernel: BIOS-e820: 000000008f6f0000 - 000000008f6f2000 (ACPI data)
Aug 26 15:48:22 localhost kernel: BIOS-e820: 000000008f6f2000 - 000000008f7cf000 (ACPI NVS)
Aug 26 15:48:22 localhost kernel: BIOS-e820: 000000008f7cf000 - 000000008f800000 (ACPI data)
Aug 26 15:48:22 localhost kernel: BIOS-e820: 000000008f800000 - 0000000090000000 (reserved)
Aug 26 15:48:22 localhost kernel: BIOS-e820: 00000000a0000000 - 00000000b0000000 (reserved)
Aug 26 15:48:22 localhost kernel: BIOS-e820: 00000000fc000000 - 00000000fd000000 (reserved)
Aug 26 15:48:22 localhost kernel: BIOS-e820: 00000000fed1c000 - 00000000fed20000 (reserved)
Aug 26 15:48:22 localhost kernel: BIOS-e820: 00000000ff800000 - 0000000100000000 (reserved)
Aug 26 15:48:22 localhost kernel: BIOS-e820: 0000000100000000 - 0000000870000000 (usable)
Aug 26 15:48:22 localhost kernel: DMI 2.5 present.
Aug 26 15:48:22 localhost kernel: SMBIOS version 2.5 @ 0xF0440
Aug 26 15:48:22 localhost kernel: last_pfn = 0x870000 max_arch_pfn = 0x400000000
Aug 26 15:48:22 localhost kernel: x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106
Aug 26 15:48:22 localhost kernel: last_pfn = 0x8c39b max_arch_pfn = 0x400000000
Aug 26 15:48:22 localhost kernel: Using GB pages for direct mapping
Aug 26 15:48:22 localhost kernel: init_memory_mapping: 0000000000000000-000000008c39b000
Aug 26 15:48:22 localhost kernel: init_memory_mapping: 0000000100000000-0000000870000000
Aug 26 15:48:22 localhost kernel: RAMDISK: 36f58000 - 37fefe05
Aug 26 15:48:22 localhost kernel: ACPI: RSDP 00000000000f0410 00024 (v02 INTEL )
Aug 26 15:48:22 localhost kernel: ACPI: XSDT 000000008f7fd120 00094 (v01 INTEL S5500BC 00000000 01000013)
Aug 26 15:48:22 localhost kernel: ACPI: FACP 000000008f7fb000 000F4 (v04 INTEL S5500BC 00000000 MSFT 0100000D)
Aug 26 15:48:22 localhost kernel: ACPI: DSDT 000000008f7f4000 06485 (v02 INTEL S5500BC 00000003 MSFT 0100000D)
Aug 26 15:48:22 localhost kernel: ACPI: FACS 000000008f6f2000 00040
Aug 26 15:48:22 localhost kernel: ACPI: APIC 000000008f7f3000 001A8 (v02 INTEL S5500BC 00000000 MSFT 0100000D)
Aug 26 15:48:22 localhost kernel: ACPI: MCFG 000000008f7f2000 0003C (v01 INTEL S5500BC 00000001 MSFT 0100000D)
Aug 26 15:48:22 localhost kernel: ACPI: HPET 000000008f7f1000 00038 (v01 INTEL S5500BC 00000001 MSFT 0100000D)
Aug 26 15:48:22 localhost kernel: ACPI: SLIT 000000008f7f0000 00030 (v01 INTEL S5500BC 00000001 MSFT 0100000D)
Aug 26 15:48:22 localhost kernel: ACPI: SRAT 000000008f7ef000 00430 (v02 INTEL S5500BC 00000001 MSFT 0100000D)
Aug 26 15:48:22 localhost kernel: ACPI: SPCR 000000008f7ee000 00050 (v01 INTEL S5500BC 00000000 MSFT 0100000D)
Aug 26 15:48:22 localhost kernel: ACPI: WDDT 000000008f7ed000 00040 (v01 INTEL S5500BC 00000000 MSFT 0100000D)
Aug 26 15:48:22 localhost kernel: ACPI: SSDT 000000008f7d2000 1AFC4 (v02 INTEL SSDT PM 00004000 INTL 20061109)
Aug 26 15:48:22 localhost kernel: ACPI: SSDT 000000008f7d1000 001D8 (v02 INTEL IPMI 00004000 INTL 20061109)
Aug 26 15:48:22 localhost kernel: ACPI: HEST 000000008f7d0000 000A8 (v01 INTEL S5500BC 00000001 INTL 00000001)
Aug 26 15:48:22 localhost kernel: ACPI: BERT 000000008f7cf000 00030 (v01 INTEL S5500BC 00000001 INTL 00000001)
Aug 26 15:48:22 localhost kernel: ACPI: ERST 000000008f6f1000 00230 (v01 INTEL S5500BC 00000001 INTL 00000001)
Aug 26 15:48:22 localhost kernel: ACPI: EINJ 000000008f6f0000 00130 (v01 INTEL S5500BC 00000001 INTL 00000001)
Aug 26 15:48:22 localhost kernel: SRAT: PXM 0 -> APIC 0 -> Node 0
Aug 26 15:48:22 localhost kernel: SRAT: PXM 1 -> APIC 32 -> Node 1
Aug 26 15:48:22 localhost kernel: SRAT: PXM 0 -> APIC 2 -> Node 0
Aug 26 15:48:22 localhost kernel: SRAT: PXM 1 -> APIC 34 -> Node 1
Aug 26 15:48:22 localhost kernel: SRAT: PXM 0 -> APIC 4 -> Node 0
Aug 26 15:48:22 localhost kernel: SRAT: PXM 1 -> APIC 36 -> Node 1
Aug 26 15:48:22 localhost kernel: SRAT: PXM 0 -> APIC 16 -> Node 0
Aug 26 15:48:22 localhost kernel: SRAT: PXM 1 -> APIC 48 -> Node 1
Aug 26 15:48:22 localhost kernel: SRAT: PXM 0 -> APIC 18 -> Node 0
Aug 26 15:48:22 localhost kernel: SRAT: PXM 1 -> APIC 50 -> Node 1
Aug 26 15:48:22 localhost kernel: SRAT: PXM 0 -> APIC 20 -> Node 0
Aug 26 15:48:22 localhost kernel: SRAT: PXM 1 -> APIC 52 -> Node 1
Aug 26 15:48:22 localhost kernel: SRAT: PXM 0 -> APIC 1 -> Node 0
Aug 26 15:48:22 localhost kernel: SRAT: PXM 1 -> APIC 33 -> Node 1
Aug 26 15:48:22 localhost kernel: SRAT: PXM 0 -> APIC 3 -> Node 0
Aug 26 15:48:22 localhost kernel: SRAT: PXM 1 -> APIC 35 -> Node 1
Aug 26 15:48:22 localhost kernel: SRAT: PXM 0 -> APIC 5 -> Node 0
Aug 26 15:48:22 localhost kernel: SRAT: PXM 1 -> APIC 37 -> Node 1
Aug 26 15:48:22 localhost kernel: SRAT: PXM 0 -> APIC 17 -> Node 0
Aug 26 15:48:22 localhost kernel: SRAT: PXM 1 -> APIC 49 -> Node 1
Aug 26 15:48:22 localhost kernel: SRAT: PXM 0 -> APIC 19 -> Node 0
Aug 26 15:48:22 localhost kernel: SRAT: PXM 1 -> APIC 51 -> Node 1
Aug 26 15:48:22 localhost kernel: SRAT: PXM 0 -> APIC 21 -> Node 0
Aug 26 15:48:22 localhost kernel: SRAT: PXM 1 -> APIC 53 -> Node 1

[小笨和漂向北方]

This system is missing one or more valid entitlement certificates. Please run subscription-manager for more information. don't waste ur time on this one: it's an unregistered RHEL system. Install CentOS as the alternative and it's free and as same as RHEL...