Сегодня я не смог удаленно пропинговать мой сервер (CentOS 5.4, на Dell). Затем я попробовал traceroute, и он показал, что хост назначения недоступен. Это очень сбивает с толку, потому что это не должно делать это.
Когда кто-то физически перезапустил его, я смог снова войти в систему. Я понимаю, что есть проблема, но все еще не могу определить основную причину.
Вот подробности:
- Интернет-провайдер использует MAC-адрес сервера для автоматического назначения статического IP-адреса через DHCP.
Таким образом, сервер был в автоматическом режиме DHCP
- Я оставил его как DHCP, потому что интернет-провайдер будет предоставлять тот же IP на основе MAC-адреса.
Несколько месяцев это работало. То, что произошло сегодня, - это то, чего я никогда раньше не видел.
- После физической перезагрузки сервера он снова подключился, и я смог снова войти в систему.
Но, тем не менее, я не уверен, была ли это проблема с DHCP и статическим IP, или проблема с кабелем провайдера, или у самого провайдера была проблема? Как вы в таком случае быстро идентифицируете - или определяете из журналов - что вызвало это?
Aug 4 23:13:54 DellServer dhclient: bound to xx.xx.xx.1xx -- renewal in 3363 seconds.
Aug 5 00:09:57 DellServer dhclient: DHCPREQUEST on eth0 to xx.xx.137.3 port 67
Aug 5 00:09:57 DellServer dhclient: DHCPACK from xx.xx.137.3
Aug 5 00:09:57 DellServer dhclient: bound to xx.xx.xx.1xx -- renewal in 1823 seconds.
Aug 5 00:40:20 DellServer dhclient: DHCPREQUEST on eth0 to xx.xx.137.3 port 67
Aug 5 00:40:20 DellServer dhclient: DHCPACK from xx.xx.137.3
Aug 5 00:40:20 DellServer dhclient: bound to xx.xx.xx.1xx -- renewal in 3070 seconds.
Aug 5 00:59:42 DellServer auditd[2510]: Audit daemon rotating log files
Aug 5 01:31:30 DellServer dhclient: DHCPREQUEST on eth0 to xx.xx.137.3 port 67
Aug 5 01:31:30 DellServer dhclient: DHCPACK from xx.xx.137.3
Aug 5 01:31:30 DellServer dhclient: bound to xx.xx.xx.1xx -- renewal in 1658 seconds.
Aug 5 01:59:08 DellServer dhclient: DHCPREQUEST on eth0 to xx.xx.137.3 port 67
Aug 5 01:59:08 DellServer dhclient: DHCPACK from xx.xx.137.3
Aug 5 01:59:08 DellServer dhclient: bound to xx.xx.xx.1xx -- renewal in 2907 seconds.
Aug 5 02:47:35 DellServer dhclient: DHCPREQUEST on eth0 to xx.xx.137.3 port 67
Aug 5 02:47:35 DellServer dhclient: DHCPACK from xx.xx.137.3
Aug 5 02:47:35 DellServer dhclient: bound to xx.xx.xx.1xx -- renewal in 2060 seconds.
Aug 5 03:09:36 DellServer kernel: bnx2: eth0 NIC Copper Link is Down
Aug 5 03:09:38 DellServer kernel: bnx2: eth0 NIC Copper Link is Up, 1000 Mbps full duplex
Aug 5 03:21:55 DellServer dhclient: DHCPREQUEST on eth0 to xx.xx.137.3 port 67
Aug 5 03:22:29 DellServer last message repeated 3 times
Aug 5 03:23:34 DellServer last message repeated 5 times
Aug 5 03:24:36 DellServer last message repeated 5 times
Aug 5 03:25:39 DellServer last message repeated 5 times
Aug 5 03:26:53 DellServer last message repeated 6 times
Aug 5 03:27:59 DellServer last message repeated 5 times
Aug 5 03:29:04 DellServer last message repeated 5 times
Aug 5 03:30:10 DellServer last message repeated 5 times
Aug 5 03:31:13 DellServer last message repeated 5 times
Aug 5 03:32:21 DellServer last message repeated 4 times
Aug 5 03:33:27 DellServer last message repeated 4 times
Aug 5 03:34:38 DellServer last message repeated 5 times
Aug 5 03:35:39 DellServer last message repeated 4 times
Aug 5 03:36:49 DellServer last message repeated 4 times
Aug 5 03:37:50 DellServer last message repeated 4 times
Aug 5 03:38:56 DellServer last message repeated 4 times
Aug 5 03:39:58 DellServer last message repeated 4 times
Aug 5 03:41:13 DellServer last message repeated 4 times
Aug 5 03:42:20 DellServer last message repeated 5 times
Aug 5 03:43:40 DellServer last message repeated 5 times
Aug 5 03:44:50 DellServer last message repeated 4 times
Aug 5 03:45:51 DellServer last message repeated 4 times
Aug 5 03:47:02 DellServer last message repeated 4 times
Aug 5 03:48:07 DellServer last message repeated 6 times
Aug 5 03:49:19 DellServer last message repeated 6 times
Aug 5 03:50:08 DellServer last message repeated 4 times
Aug 5 03:50:23 DellServer dhclient: DHCPREQUEST on eth0 to 255.255.255.255 port 67
Aug 5 03:50:58 DellServer last message repeated 3 times
Aug 5 03:52:13 DellServer last message repeated 4 times
Aug 5 03:53:18 DellServer last message repeated 5 times
Aug 5 03:54:27 DellServer last message repeated 6 times
Aug 5 03:55:41 DellServer last message repeated 6 times
Aug 5 03:56:48 DellServer last message repeated 4 times
Aug 5 03:57:54 DellServer last message repeated 5 times
Aug 5 03:59:03 DellServer last message repeated 5 times
Aug 5 03:59:09 DellServer NET[32604]: /sbin/dhclient-script : updated /etc/resolv.conf
Aug 5 03:59:09 DellServer avahi-daemon[3284]: Withdrawing address record for xx.xx.xx.1xx on eth0.
Aug 5 03:59:09 DellServer avahi-daemon[3284]: Leaving mDNS multicast group on interface eth0.IPv4 with address xx.xx.xx.1xx.
Aug 5 03:59:09 DellServer avahi-daemon[3284]: iface.c: interface_mdns_mcast_join() called but no local address available.
Aug 5 03:59:09 DellServer avahi-daemon[3284]: Interface eth0.IPv4 no longer relevant for mDNS.
Aug 5 03:59:09 DellServer kernel: bnx2: eth0: using MSIX
Aug 5 03:59:09 DellServer kernel: bnx2i: iSCSI not supported, dev=eth0
Aug 5 03:59:11 DellServer kernel: bnx2i: iSCSI not supported, dev=eth0
Aug 5 03:59:11 DellServer dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 6
Aug 5 03:59:11 DellServer dhclient: send_packet: Network is down
Aug 5 03:59:11 DellServer kernel: bnx2: eth0 NIC Copper Link is Up, 1000 Mbps full duplex
Aug 5 03:59:17 DellServer dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 14
Aug 5 03:59:31 DellServer dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 10
Aug 5 03:59:41 DellServer dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 12
Aug 5 03:59:53 DellServer dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 11
Aug 5 04:00:04 DellServer dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8
Aug 5 04:00:12 DellServer dhclient: No DHCPOFFERS received.
Aug 5 13:51:03 DellServer shutdown[1828]: shutting down for system halt
Aug 5 13:51:03 DellServer init: Switching to runlevel: 0
Aug 5 13:51:04 DellServer smartd[3426]: smartd received signal 15: Terminated
Aug 5 13:51:04 DellServer smartd[3426]: smartd is exiting (exit status 0)
Aug 5 13:51:04 DellServer avahi-daemon[3284]: Got SIGTERM, quitting.
Aug 5 13:51:07 DellServer xinetd[3026]: Exiting...
Aug 5 13:55:06 DellServer syslogd 1.4.1: restart.
Aug 5 13:55:06 DellServer kernel: klogd 1.4.1, log source = /proc/kmsg started.