I noticed that the MySQL daemon running on my CentOS 6.4 machine was suddenly not running anymore. I checked the MySQL log, but didn't see anything relevant:121229 22:17:45 mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended121229 22:17:50 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql121229 22:17:50  InnoDB: Initializing buffer pool, size = 8.0M121229 22:17:50  InnoDB: Completed initialization of buffer pool121229 22:17:50  InnoDB: Started; log sequence number 0 206087326121229 22:17:50 [Note] Event Scheduler: Loaded 0 events121229 22:17:50 [Note] /usr/libexec/mysqld: ready for connections.Version: '5.1.66-log'  socket: '/var/lib/mysql/mysql.sock'  port: 3306  Source distribution130205 11:09:32 [Note] /usr/libexec/mysqld: Normal shutdown130205 11:09:32 [Note] Event Scheduler: Purging the queue. 0 events130205 11:09:34  InnoDB: Starting shutdown...130205 11:09:36  InnoDB: Shutdown completed; log sequence number 0 529664030130205 11:09:36 [Note] /usr/libexec/mysqld: Shutdown complete130205 11:09:36 mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended130205 11:09:37 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql130205 11:09:37  InnoDB: Initializing buffer pool, size = 8.0M130205 11:09:37  InnoDB: Completed initialization of buffer pool130205 11:09:37  InnoDB: Started; log sequence number 0 529664030130205 11:09:37 [Note] Event Scheduler: Loaded 0 events130205 11:09:37 [Note] /usr/libexec/mysqld: ready for connections.Version: '5.1.67-log'  socket: '/var/lib/mysql/mysql.sock'  port: 3306  Source distribution130310 11:33:12 [Note] /usr/libexec/mysqld: Normal shutdown130310 11:33:12 [Note] Event Scheduler: Purging the queue. 0 events130310 11:33:14  InnoDB: Starting shutdown...130310 11:33:16  InnoDB: Shutdown completed; log sequence number 0 788753738130310 11:33:16 [Note] /usr/libexec/mysqld: Shutdown complete130310 11:33:16 mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended130310 11:36:03 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql130310 11:36:03  InnoDB: Initializing buffer pool, size = 8.0M130310 11:36:03  InnoDB: Completed initialization of buffer pool130310 11:36:04  InnoDB: Started; log sequence number 0 788753738130310 11:36:04 [Note] Event Scheduler: Loaded 0 events130310 11:36:04 [Note] /usr/libexec/mysqld: ready for connections.Version: '5.1.67-log'  socket: '/var/lib/mysql/mysql.sock'  port: 3306  Source distribution130413 20:56:55 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql130413 20:56:56  InnoDB: Initializing buffer pool, size = 8.0M130413 20:56:56  InnoDB: Completed initialization of buffer poolInnoDB: Log scan progressed past the checkpoint lsn 0 1139894636130413 20:56:56  InnoDB: Database was not shut down normally!InnoDB: Starting crash recovery.InnoDB: Reading tablespace information from the .ibd files...InnoDB: Restoring possible half-written data pages from the doublewriteInnoDB: buffer...InnoDB: Doing recovery: scanned up to log sequence number 0 1139895853130413 20:56:56  InnoDB: Starting an apply batch of log records to the database...InnoDB: Progress in percents: 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 InnoDB: Apply batch completedInnoDB: Last MySQL binlog file position 0 335782050, file name ./mysql-bin.000003130413 20:56:57  InnoDB: Started; log sequence number 0 1139895853130413 20:56:57 [Note] Recovering after a crash using mysql-bin130413 20:56:59 [ERROR] Error in Log_event::read_log_event(): 'read error', data_len: 809, event_type: 2130413 20:56:59 [Note] Starting crash recovery...130413 20:56:59 [Note] Crash recovery finished.130413 20:56:59 [Note] Event Scheduler: Loaded 0 events130413 20:56:59 [Note] /usr/libexec/mysqld: ready for connections.Version: '5.1.67-log'  socket: '/var/lib/mysql/mysql.sock'  port: 3306  Source distributionThen I checked /var/log/messages, and realized the system was rebooted for some reason:Apr  7 03:48:03 localhost rsyslogd: [origin software=rsyslogd swVersion=5.8.10 x-pid=1335 x-info=http://www.rsyslog.com] rsyslogd was HUPedApr 13 17:19:07 localhost kernel: imklog 5.8.10, log source = /proc/kmsg started.Apr 13 17:19:07 localhost rsyslogd: [origin software=rsyslogd swVersion=5.8.10 x-pid=1370 x-info=http://www.rsyslog.com] startApr 13 17:19:07 localhost kernel: Initializing cgroup subsys cpusetApr 13 17:19:07 localhost kernel: Initializing cgroup subsys cpuApr 13 17:19:07 localhost kernel: Linux version 2.6.32-358.2.1.el6.x86_64 (mockbuild@c6b8.bsys.dev.centos.org) (gcc version 4.4.7 20120313 (Red Hat 4.4.7-3) (GCC) ) #1 SMP Wed Mar 13 00:26:49 UTC 2013Apr 13 17:19:07 localhost kernel: Command line: ro root=/dev/mapper/VolGroup-lv_root rd_NO_LUKS LANG=en_US.UTF-8 rd_NO_MD rd_LVM_LV=VolGroup/lv_swap SYSFONT=latarcyrheb-sun16 crashkernel=auto rd_LVM_LV=VolGroup/lv_root  KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb quietApr 13 17:19:07 localhost kernel: KERNEL supported cpus:Apr 13 17:19:07 localhost kernel:  Intel GenuineIntelApr 13 17:19:07 localhost kernel:  AMD AuthenticAMDApr 13 17:19:07 localhost kernel:  Centaur CentaurHaulsApr 13 17:19:07 localhost kernel: BIOS-provided physical RAM map:Apr 13 17:19:07 localhost kernel: BIOS-e820: 0000000000000000 - 000000000009b000 (usable)Apr 13 17:19:07 localhost kernel: BIOS-e820: 000000000009b000 - 00000000000a0000 (reserved)Apr 13 17:19:07 localhost kernel: BIOS-e820: 00000000000e0000 - 0000000000100000 (reserved)Apr 13 17:19:07 localhost kernel: BIOS-e820: 0000000000100000 - 000000008bf64000 (usable)Apr 13 17:19:07 localhost kernel: BIOS-e820: 000000008bf64000 - 000000008c051000 (ACPI NVS)Apr 13 17:19:07 localhost kernel: BIOS-e820: 000000008c051000 - 000000008c13d000 (ACPI data)Apr 13 17:19:07 localhost kernel: BIOS-e820: 000000008c13d000 - 000000008d53d000 (ACPI NVS)Apr 13 17:19:07 localhost kernel: BIOS-e820: 000000008d53d000 - 000000008f602000 (ACPI data)Apr 13 17:19:07 localhost kernel: BIOS-e820: 000000008f602000 - 000000008f64f000 (reserved)Apr 13 17:19:07 localhost kernel: BIOS-e820: 000000008f64f000 - 000000008f6e4000 (ACPI data)Apr 13 17:19:07 localhost kernel: BIOS-e820: 000000008f6e4000 - 000000008f6ef000 (ACPI NVS)Apr 13 17:19:07 localhost kernel: BIOS-e820: 000000008f6ef000 - 000000008f6f1000 (ACPI data)Apr 13 17:19:07 localhost kernel: BIOS-e820: 000000008f6f1000 - 000000008f7cf000 (ACPI NVS)Apr 13 17:19:07 localhost kernel: BIOS-e820: 000000008f7cf000 - 000000008f800000 (ACPI data)Apr 13 17:19:07 localhost kernel: BIOS-e820: 000000008f800000 - 0000000090000000 (reserved)Apr 13 17:19:07 localhost kernel: BIOS-e820: 00000000a0000000 - 00000000b0000000 (reserved)Apr 13 17:19:07 localhost kernel: BIOS-e820: 00000000fc000000 - 00000000fd000000 (reserved)Apr 13 17:19:07 localhost kernel: BIOS-e820: 00000000fed1c000 - 00000000fed20000 (reserved)Apr 13 17:19:07 localhost kernel: BIOS-e820: 00000000ff800000 - 0000000100000000 (reserved)Apr 13 17:19:07 localhost kernel: BIOS-e820: 0000000100000000 - 0000000270000000 (usable)Apr 13 17:19:07 localhost kernel: DMI 2.5 present.Apr 13 17:19:07 localhost kernel: SMBIOS version 2.5 @ 0xF0440Apr 13 17:19:07 localhost kernel: last_pfn = 0x270000 max_arch_pfn = 0x400000000Apr 13 17:19:07 localhost kernel: x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106Apr 13 17:19:07 localhost kernel: last_pfn = 0x8bf64 max_arch_pfn = 0x400000000Apr 13 17:19:07 localhost kernel: Using GB pages for direct mappingApr 13 17:19:07 localhost kernel: init_memory_mapping: 0000000000000000-000000008bf64000Apr 13 17:19:07 localhost kernel: init_memory_mapping: 0000000100000000-0000000270000000Apr 13 17:19:07 localhost kernel: RAMDISK: 3717b000 - 37fef73aApr 13 17:19:07 localhost kernel: ACPI: RSDP 00000000000f0410 00024 (v02 Cisco0)Apr 13 17:19:07 localhost kernel: ACPI: XSDT 000000008f7fe120 0009C (v01 Cisco0 CiscoUCS 00000000      01000013)Apr 13 17:19:07 localhost kernel: ACPI: FACP 000000008f7fc000 000F4 (v04 Cisco0 CiscoUCS 00000000 MSFT 0100000D)Apr 13 17:19:07 localhost kernel: ACPI: DSDT 000000008f7f6000 05DBE (v02 Cisco0 CiscoUCS 00000003 MSFT 0100000D)Apr 13 17:19:07 localhost kernel: ACPI: FACS 000000008f6f1000 00040Apr 13 17:19:07 localhost kernel: ACPI: APIC 000000008f7f5000 001A8 (v02 Cisco0 CiscoUCS 00000000 MSFT 0100000D)Apr 13 17:19:07 localhost kernel: ACPI: MCFG 000000008f7f4000 0003C (v01 Cisco0 CiscoUCS 00000001 MSFT 0100000D)Apr 13 17:19:07 localhost kernel: ACPI: HPET 000000008f7f3000 00038 (v01 Cisco0 CiscoUCS 00000001 MSFT 0100000D)Apr 13 17:19:07 localhost kernel: ACPI: SLIT 000000008f7f2000 00030 (v01 Cisco0 CiscoUCS 00000001 MSFT 0100000D)Apr 13 17:19:07 localhost kernel: ACPI: SPCR 000000008f7f1000 00050 (v01 Cisco0 CiscoUCS 00000000 MSFT 0100000D)Apr 13 17:19:07 localhost kernel: ACPI: WDDT 000000008f7f0000 00040 (v01 Cisco0 CiscoUCS 00000000 MSFT 0100000D)Apr 13 17:19:07 localhost kernel: ACPI: SSDT 000000008f7d5000 1AFC4 (v02  Cisco SSDT  PM 00004000 INTL 20090730)Apr 13 17:19:07 localhost kernel: ACPI: SSDT 000000008f7d4000 001D8 (v02  Cisco IPMI     00004000 INTL 20090730)Apr 13 17:19:07 localhost kernel: ACPI: SSDT 000000008f7d3000 00962 (v02 CISCO  PMETER   00004000 INTL 20090730)Apr 13 17:19:07 localhost kernel: ACPI: HEST 000000008f7d1000 000A8 (v01 Cisco  CiscoTbl 00000001 CISC 00000001)Apr 13 17:19:07 localhost kernel: ACPI: BERT 000000008f7d0000 00030 (v01 Cisco  CiscoTbl 00000001 CISC 00000001)Apr 13 17:19:07 localhost kernel: ACPI: ERST 000000008f7cf000 00230 (v01 Cisco  CiscoTbl 00000001 CISC 00000001)Apr 13 17:19:07 localhost kernel: ACPI: EINJ 000000008f6f0000 00130 (v01 Cisco  CiscoTbl 00000001 CISC 00000001)Apr 13 17:19:07 localhost kernel: ACPI: DMAR 000000008f6ef000 001A8 (v01 Cisco0 CiscoUCS 00000001 MSFT 0100000D)Apr 13 17:19:07 localhost kernel: Setting APIC routing to flat.Apr 13 17:19:07 localhost kernel: No NUMA configuration foundApr 13 17:19:07 localhost kernel: Faking a node at 0000000000000000-0000000270000000Apr 13 17:19:07 localhost kernel: Bootmem setup node 0 0000000000000000-0000000270000000Apr 13 17:19:07 localhost kernel:  NODE_DATA [000000000000b000 - 000000000003efff]Apr 13 17:19:07 localhost kernel:  bootmap [000000000003f000 -  000000000008cfff] pages 4eApr 13 17:19:07 localhost kernel: (9 early reservations) ==> bootmem [0000000000 - 0270000000]Apr 13 17:19:07 localhost kernel:  #0 [0000000000 - 0000001000]   BIOS data page ==> [0000000000 - 0000001000]Apr 13 17:19:07 localhost kernel:  #1 [0000006000 - 0000008000]       TRAMPOLINE ==> [0000006000 - 0000008000]Apr 13 17:19:07 localhost kernel:  #2 [0001000000 - 000201b0a4]    TEXT DATA BSS ==> [0001000000 - 000201b0a4]Apr 13 17:19:07 localhost kernel:  #3 [003717b000 - 0037fef73a]          RAMDISK ==> [003717b000 - 0037fef73a]Apr 13 17:19:07 localhost kernel:  #4 [000009b000 - 0000100000]    BIOS reserved ==> [000009b000 - 0000100000]Apr 13 17:19:07 localhost kernel:  #5 [000201c000 - 000201c2f8]              BRK ==> [000201c000 - 000201c2f8]Apr 13 17:19:07 localhost kernel:  #6 [0000008000 - 000000a000]          PGTABLE ==> [0000008000 - 000000a000]Apr 13 17:19:07 localhost kernel:  #7 [000000a000 - 000000b000]          PGTABLE ==> [000000a000 - 000000b000]Apr 13 17:19:07 localhost kernel:  #8 [0000001000 - 0000001030]        ACPI SLIT ==> [0000001000 - 0000001030]Apr 13 17:19:07 localhost kernel: found SMP MP-table at [ffff8800000fc640] fc640Apr 13 17:19:07 localhost kernel: Reserving 129MB of memory at 48MB for crashkernel (System RAM: 9984MB)Apr 13 17:19:07 localhost kernel: Zone PFN ranges:Apr 13 17:19:07 localhost kernel:  DMA      0x00000001 -> 0x00001000Apr 13 17:19:07 localhost kernel:  DMA32    0x00001000 -> 0x00100000Apr 13 17:19:07 localhost kernel:  Normal   0x00100000 -> 0x00270000Apr 13 17:19:07 localhost kernel: Movable zone start PFN for each nodeApr 13 17:19:07 localhost kernel: early_node_map[3] active PFN rangesApr 13 17:19:07 localhost kernel:    0: 0x00000001 -> 0x0000009bApr 13 17:19:07 localhost kernel:    0: 0x00000100 -> 0x0008bf64Apr 13 17:19:07 localhost kernel:    0: 0x00100000 -> 0x00270000Apr 13 17:19:07 localhost kernel: ACPI: PM-Timer IO Port: 0x408Apr 13 17:19:07 localhost kernel: Setting APIC routing to flat.Apr 13 17:19:07 localhost kernel: ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)Apr 13 17:19:07 localhost kernel: ACPI: LAPIC (acpi_id[0x01] lapic_id[0x02] enabled)Apr 13 17:19:07 localhost kernel: ACPI: LAPIC (acpi_id[0x02] lapic_id[0x12] enabled)Apr 13 17:19:07 localhost kernel: ACPI: LAPIC (acpi_id[0x03] lapic_id[0x14] enabled)Apr 13 17:19:07 localhost kernel: ACPI: LAPIC (acpi_id[0x04] lapic_id[0x01] enabled)Apr 13 17:19:07 localhost kernel: ACPI: LAPIC (acpi_id[0x05] lapic_id[0x03] enabled)Apr 13 17:19:07 localhost kernel: ACPI: LAPIC (acpi_id[0x06] lapic_id[0x13] enabled)Apr 13 17:19:07 localhost kernel: ACPI: LAPIC (acpi_id[0x07] lapic_id[0x15] enabled)Apr 13 17:19:07 localhost kernel: ACPI: LAPIC (acpi_id[0x08] lapic_id[0xff] disabled)Apr 13 17:19:07 localhost kernel: ACPI: LAPIC (acpi_id[0x09] lapic_id[0xff] disabled)Apr 13 17:19:07 localhost kernel: ACPI: LAPIC (acpi_id[0x0a] lapic_id[0xff] disabled)Apr 13 17:19:07 localhost kernel: ACPI: LAPIC (acpi_id[0x0b] lapic_id[0xff] disabled)Apr 13 17:19:07 localhost kernel: ACPI: LAPIC (acpi_id[0x0c] lapic_id[0xff] disabled)Apr 13 17:19:07 localhost kernel: ACPI: LAPIC (acpi_id[0x0d] lapic_id[0xff] disabled)Apr 13 17:19:07 localhost kernel: ACPI: LAPIC (acpi_id[0x0e] lapic_id[0xff] disabled)Apr 13 17:19:07 localhost kernel: ACPI: LAPIC (acpi_id[0x0f] lapic_id[0xff] disabled)Apr 13 17:19:07 localhost kernel: ACPI: LAPIC (acpi_id[0x10] lapic_id[0xff] disabled)Apr 13 17:19:07 localhost kernel: ACPI: LAPIC (acpi_id[0x11] lapic_id[0xff] disabled)Apr 13 17:19:07 localhost kernel: ACPI: LAPIC (acpi_id[0x12] lapic_id[0xff] disabled)Apr 13 17:19:07 localhost kernel: ACPI: LAPIC (acpi_id[0x13] lapic_id[0xff] disabled)Apr 13 17:19:07 localhost kernel: ACPI: LAPIC (acpi_id[0x14] lapic_id[0xff] disabled)Apr 13 17:19:07 localhost kernel: ACPI: LAPIC (acpi_id[0x15] lapic_id[0xff] disabled)Apr 13 17:19:07 localhost kernel: ACPI: LAPIC (acpi_id[0x16] lapic_id[0xff] disabled)Apr 13 17:19:07 localhost kernel: ACPI: LAPIC (acpi_id[0x17] lapic_id[0xff] disabled)Apr 13 17:19:07 localhost kernel: ACPI: LAPIC_NMI (acpi_id[0x00] high level lint[0x1])Apr 13 17:19:07 localhost kernel: ACPI: LAPIC_NMI (acpi_id[0x01] high level lint[0x1])Apr 13 17:19:07 localhost kernel: ACPI: LAPIC_NMI (acpi_id[0x02] high level lint[0x1])Apr 13 17:19:07 localhost kernel: ACPI: LAPIC_NMI (acpi_id[0x03] high level lint[0x1])Apr 13 17:19:07 localhost kernel: ACPI: LAPIC_NMI (acpi_id[0x04] high level lint[0x1])Apr 13 17:19:07 localhost kernel: ACPI: LAPIC_NMI (acpi_id[0x05] high level lint[0x1])Apr 13 17:19:07 localhost kernel: ACPI: LAPIC_NMI (acpi_id[0x06] high level lint[0x1])Apr 13 17:19:07 localhost kernel: ACPI: LAPIC_NMI (acpi_id[0x07] high level lint[0x1])Apr 13 17:19:07 localhost kernel: ACPI: LAPIC_NMI (acpi_id[0x08] high level lint[0x1])Apr 13 17:19:07 localhost kernel: ACPI: LAPIC_NMI (acpi_id[0x09] high level lint[0x1])Apr 13 17:19:07 localhost kernel: ACPI: LAPIC_NMI (acpi_id[0x0a] high level lint[0x1])Apr 13 17:19:07 localhost kernel: ACPI: LAPIC_NMI (acpi_id[0x0b] high level lint[0x1])Apr 13 17:19:07 localhost kernel: ACPI: LAPIC_NMI (acpi_id[0x0c] high level lint[0x1])Apr 13 17:19:07 localhost kernel: ACPI: LAPIC_NMI (acpi_id[0x0d] high level lint[0x1])Apr 13 17:19:07 localhost kernel: ACPI: LAPIC_NMI (acpi_id[0x0e] high level lint[0x1])Apr 13 17:19:07 localhost kernel: ACPI: LAPIC_NMI (acpi_id[0x0f] high level lint[0x1])Apr 13 17:19:07 localhost kernel: ACPI: LAPIC_NMI (acpi_id[0x10] high level lint[0x1])Apr 13 17:19:07 localhost kernel: ACPI: LAPIC_NMI (acpi_id[0x11] high level lint[0x1])Apr 13 17:19:07 localhost kernel: ACPI: LAPIC_NMI (acpi_id[0x12] high level lint[0x1])Apr 13 17:19:07 localhost kernel: ACPI: LAPIC_NMI (acpi_id[0x13] high level lint[0x1])Apr 13 17:19:07 localhost kernel: ACPI: LAPIC_NMI (acpi_id[0x14] high level lint[0x1])Apr 13 17:19:07 localhost kernel: ACPI: LAPIC_NMI (acpi_id[0x15] high level lint[0x1])Apr 13 17:19:07 localhost kernel: ACPI: LAPIC_NMI (acpi_id[0x16] high level lint[0x1])Apr 13 17:19:07 localhost kernel: ACPI: LAPIC_NMI (acpi_id[0x17] high level lint[0x1])Apr 13 17:19:07 localhost kernel: ACPI: IOAPIC (id[0x08] address[0xfec00000] gsi_base[0])Apr 13 17:19:07 localhost kernel: IOAPIC[0]: apic_id 8, version 32, address 0xfec00000, GSI 0-23Apr 13 17:19:07 localhost kernel: ACPI: IOAPIC (id[0x09] address[0xfec90000] gsi_base[24])Apr 13 17:19:07 localhost kernel: IOAPIC[1]: apic_id 9, version 32, address 0xfec90000, GSI 24-47Apr 13 17:19:07 localhost kernel: ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)Apr 13 17:19:07 localhost kernel: ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)Apr 13 17:19:07 localhost kernel: Using ACPI (MADT) for SMP configuration informationApr 13 17:19:07 localhost kernel: ACPI: HPET id: 0x8086a401 base: 0xfed00000Apr 13 17:19:07 localhost kernel: SMP: Allowing 24 CPUs, 16 hotplug CPUsApr 13 17:19:07 localhost kernel: PM: Registered nosave memory: 000000000009b000 - 00000000000a0000Apr 13 17:19:07 localhost kernel: PM: Registered nosave memory: 00000000000a0000 - 00000000000e0000Apr 13 17:19:07 localhost kernel: PM: Registered nosave memory: 00000000000e0000 - 0000000000100000Apr 13 17:19:07 localhost kernel: PM: Registered nosave memory: 000000008bf64000 - 000000008c051000Apr 13 17:19:07 localhost kernel: PM: Registered nosave memory: 000000008c051000 - 000000008c13d000Apr 13 17:19:07 localhost kernel: PM: Registered nosave memory: 000000008c13d000 - 000000008d53d000Apr 13 17:19:07 localhost kernel: PM: Registered nosave memory: 000000008d53d000 - 000000008f602000Apr 13 17:19:07 localhost kernel: PM: Registered nosave memory: 000000008f602000 - 000000008f64f000Apr 13 17:19:07 localhost kernel: PM: Registered nosave memory: 000000008f64f000 - 000000008f6e4000Apr 13 17:19:07 localhost kernel: PM: Registered nosave memory: 000000008f6e4000 - 000000008f6ef000Apr 13 17:19:07 localhost kernel: PM: Registered nosave memory: 000000008f6ef000 - 000000008f6f1000Apr 13 17:19:07 localhost kernel: PM: Registered nosave memory: 000000008f6f1000 - 000000008f7cf000Apr 13 17:19:07 localhost kernel: PM: Registered nosave memory: 000000008f7cf000 - 000000008f800000Apr 13 17:19:07 localhost kernel: PM: Registered nosave memory: 000000008f800000 - 0000000090000000Apr 13 17:19:07 localhost kernel: PM: Registered nosave memory: 0000000090000000 - 00000000a0000000Apr 13 17:19:07 localhost kernel: PM: Registered nosave memory: 00000000a0000000 - 00000000b0000000Apr 13 17:19:07 localhost kernel: PM: Registered nosave memory: 00000000b0000000 - 00000000fc000000Apr 13 17:19:07 localhost kernel: PM: Registered nosave memory: 00000000fc000000 - 00000000fd000000Apr 13 17:19:07 localhost kernel: PM: Registered nosave memory: 00000000fd000000 - 00000000fed1c000Apr 13 17:19:07 localhost kernel: PM: Registered nosave memory: 00000000fed1c000 - 00000000fed20000Apr 13 17:19:07 localhost kernel: PM: Registered nosave memory: 00000000fed20000 - 00000000ff800000Apr 13 17:19:07 localhost kernel: PM: Registered nosave memory: 00000000ff800000 - 0000000100000000Apr 13 17:19:07 localhost kernel: Allocating PCI resources starting at b0000000 (gap: b0000000:4c000000)Apr 13 17:19:07 localhost kernel: Booting paravirtualized kernel on bare hardwareApr 13 17:19:07 localhost kernel: NR_CPUS:4096 nr_cpumask_bits:24 nr_cpu_ids:24 nr_node_ids:1Apr 13 17:19:07 localhost kernel: PERCPU: Embedded 31 pages/cpu @ffff88002f800000 s94552 r8192 d24232 u131072Apr 13 17:19:07 localhost kernel: pcpu-alloc: s94552 r8192 d24232 u131072 alloc=1*2097152Apr 13 17:19:07 localhost kernel: pcpu-alloc: [0] 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 Apr 13 17:19:07 localhost kernel: pcpu-alloc: [0] 16 17 18 19 20 21 22 23 -- -- -- -- -- -- -- -- Apr 13 17:19:07 localhost kernel: Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 2045459Apr 13 17:19:07 localhost kernel: Policy zone: NormalApr 13 17:19:07 localhost kernel: Kernel command line: ro root=/dev/mapper/VolGroup-lv_root rd_NO_LUKS LANG=en_US.UTF-8 rd_NO_MD rd_LVM_LV=VolGroup/lv_swap SYSFONT=latarcyrheb-sun16 crashkernel=129M@0M rd_LVM_LV=VolGroup/lv_root  KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb quietApr 13 17:19:07 localhost kernel: PID hash table entries: 4096 (order: 3, 32768 bytes)Apr 13 17:19:07 localhost kernel: Checking aperture...Apr 13 17:19:07 localhost kernel: No AGP bridge foundApr 13 17:19:07 localhost kernel: PCI-DMA: Using software bounce buffering for IO (SWIOTLB)Apr 13 17:19:07 localhost kernel: Placing 64MB software IO TLB between ffff880020000000 - ffff880024000000Apr 13 17:19:07 localhost kernel: software IO TLB at phys 0x20000000 - 0x24000000Apr 13 17:19:07 localhost kernel: Memory: 7972340k/10223616k available (5221k kernel code, 1901576k absent, 349700k reserved, 7121k data, 1264k init)Apr 13 17:19:07 localhost kernel: Hierarchical RCU implementation.Apr 13 17:19:07 localhost kernel: NR_IRQS:33024 nr_irqs:1008Apr 13 17:19:07 localhost kernel: Extended CMOS year: 2000Apr 13 17:19:07 localhost kernel: Console: colour VGA+ 80x25Apr 13 17:19:07 localhost kernel: console [tty0] enabledApr 13 17:19:07 localhost kernel: allocated 33554432 bytes of page_cgroupApr 13 17:19:07 localhost kernel: please try 'cgroup_disable=memory' option if you don't want memory cgroupsApr 13 17:19:07 localhost kernel: Fast TSC calibration using PITApr 13 17:19:07 localhost kernel: Detected 2666.901 MHz processor.Apr 13 17:19:07 localhost kernel: Calibrating delay loop (skipped), value calculated using timer frequency.. 5333.80 BogoMIPS (lpj=2666901)Apr 13 17:19:07 localhost kernel: pid_max: default: 32768 minimum: 301Apr 13 17:19:07 localhost kernel: Security Framework initializedApr 13 17:19:07 localhost kernel: SELinux:  Initializing.Apr 13 17:19:07 localhost kernel: Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes)Apr 13 17:19:07 localhost kernel: Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes)Apr 13 17:19:07 localhost kernel: Mount-cache hash table entries: 256Apr 13 17:19:07 localhost kernel: Initializing cgroup subsys nsApr 13 17:19:07 localhost kernel: Initializing cgroup subsys cpuacctApr 13 17:19:07 localhost kernel: Initializing cgroup subsys memoryApr 13 17:19:07 localhost kernel: Initializing cgroup subsys devicesApr 13 17:19:07 localhost kernel: Initializing cgroup subsys freezerApr 13 17:19:07 localhost kernel: Initializing cgroup subsys net_clsApr 13 17:19:07 localhost kernel: Initializing cgroup subsys blkioApr 13 17:19:07 localhost kernel: Initializing cgroup subsys perf_eventApr 13 17:19:07 localhost kernel: Initializing cgroup subsys net_prioApr 13 17:19:07 localhost kernel: CPU: Physical Processor ID: 0Apr 13 17:19:07 localhost kernel: CPU: Processor Core ID: 0Apr 13 17:19:07 localhost kernel: mce: CPU supports 9 MCE banksApr 13 17:19:07 localhost kernel: CPU0: Thermal monitoring enabled (TM1)Apr 13 17:19:07 localhost kernel: using mwait in idle threads.Apr 13 17:19:07 localhost kernel: ACPI: Core revision 20090903Apr 13 17:19:07 localhost kernel: ftrace: converting mcount calls to 0f 1f 44 00 00Apr 13 17:19:07 localhost kernel: ftrace: allocating 21430 entries in 85 pagesApr 13 17:19:07 localhost kernel: dmar: Host address width 40Apr 13 17:19:07 localhost kernel: dmar: DRHD base: 0x000000fe710000 flags: 0x1Apr 13 17:19:07 localhost kernel: dmar: IOMMU 0: reg_base_addr fe710000 ver 1:0 cap c90780106f0462 ecap f020feApr 13 17:19:07 localhost kernel: dmar: RMRR base: 0x0000008f62f000 end: 0x0000008f631fffApr 13 17:19:07 localhost kernel: dmar: RMRR base: 0x0000008f61a000 end: 0x0000008f61afffApr 13 17:19:07 localhost kernel: dmar: RMRR base: 0x0000008f617000 end: 0x0000008f617fffApr 13 17:19:07 localhost kernel: dmar: RMRR base: 0x0000008f614000 end: 0x0000008f614fffApr 13 17:19:07 localhost kernel: dmar: RMRR base: 0x0000008f611000 end: 0x0000008f611fffApr 13 17:19:07 localhost kernel: dmar: RMRR base: 0x0000008f60e000 end: 0x0000008f60efffApr 13 17:19:07 localhost kernel: dmar: RMRR base: 0x0000008f60b000 end: 0x0000008f60bfffApr 13 17:19:07 localhost kernel: dmar: RMRR base: 0x0000008f608000 end: 0x0000008f608fffApr 13 17:19:07 localhost kernel: dmar: RMRR base: 0x0000008f605000 end: 0x0000008f605fffApr 13 17:19:07 localhost kernel: dmar: No ATSR foundApr 13 17:19:07 localhost kernel: IOAPIC id 8 under DRHD base 0xfe710000Apr 13 17:19:07 localhost kernel: IOAPIC id 9 under DRHD base 0xfe710000Apr 13 17:19:07 localhost kernel: Enabled IRQ remapping in xapic modeApr 13 17:19:07 localhost kernel: Setting APIC routing to physical flatApr 13 17:19:07 localhost kernel: ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1Apr 13 17:19:07 localhost kernel: CPU0: Intel(R) Xeon(R) CPU           E5640  @ 2.67GHz stepping 02Apr 13 17:19:07 localhost kernel: Performance Events: PEBS fmt1+, Westmere events, Intel PMU driver.Apr 13 17:19:07 localhost kernel: CPUID marked event: 'bus cycles' unavailableApr 13 17:19:07 localhost kernel: ... version:                3Apr 13 17:19:07 localhost kernel: ... bit width:              48Apr 13 17:19:07 localhost kernel: ... generic registers:      4Apr 13 17:19:07 localhost kernel: ... value mask:             0000ffffffffffffApr 13 17:19:07 localhost kernel: ... max period:             000000007fffffffApr 13 17:19:07 localhost kernel: ... fixed-purpose events:   3Apr 13 17:19:07 localhost kernel: ... event mask:             000000070000000fApr 13 17:19:07 localhost kernel: NMI watchdog enabled, takes one hw-pmu counter.Apr 13 17:19:07 localhost kernel: Booting Node   0, Processors  #1 #2 #3 #4 #5 #6 #7Apr 13 17:19:07 localhost kernel: Brought up 8 CPUsApr 13 17:19:07 localhost kernel: Total of 8 processors activated (42670.41 BogoMIPS).Apr 13 17:19:07 localhost kernel: devtmpfs: initializedApr 13 17:19:07 localhost kernel: PM: Registering ACPI NVS region at 8bf64000 (970752 bytes)Apr 13 17:19:07 localhost kernel: PM: Registering ACPI NVS region at 8c13d000 (20971520 bytes)Apr 13 17:19:07 localhost kernel: PM: Registering ACPI NVS region at 8f6e4000 (45056 bytes)Apr 13 17:19:07 localhost kernel: PM: Registering ACPI NVS region at 8f6f1000 (909312 bytes)Apr 13 17:19:07 localhost kernel: regulator: core version 0.5Apr 13 17:19:07 localhost kernel: NET: Registered protocol family 16Apr 13 17:19:07 localhost kernel: ACPI FADT declares the system doesn't support PCIe ASPM, so disable itApr 13 17:19:07 localhost kernel: ACPI: bus type pci registeredApr 13 17:19:07 localhost kernel: PCI: MCFG configuration 0: base a0000000 segment 0 buses 0 - 255Apr 13 17:19:07 localhost kernel: PCI: MCFG area at a0000000 reserved in E820Apr 13 17:19:07 localhost kernel: PCI: Using MMCONFIG at a0000000 - afffffffApr 13 17:19:07 localhost kernel: PCI: Using configuration type 1 for base accessApr 13 17:19:07 localhost kernel: bio: create slab <bio-0> at 0Apr 13 17:19:07 localhost kernel: ACPI: Interpreter enabledApr 13 17:19:07 localhost kernel: ACPI: (supports S0 S5)How can I determine what caused the system to be rebooted?
What caused my CentOS 6.4 box to reboot itself?
centos;mysql;reboot