[질문] 리눅스 머신이 죽으며 /var/log/messages 에 뿌린 내용입니다..

ecstasy5001의 이미지

[root@Test log]# uname -a
Linux Test 2.6.15-SMP-HM #12 SMP PREEMPT Mon Apr 16 22:24:02 KST 2007 i686 i686 i386 GNU/Linux
[root@Test log]#cat /var/log/messages
 
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Oct 12 13:39:01 Test snmpd[2651]: NET-SNMP version 5.2
Oct 12 13:39:15 Test kernel: device eth4 entered promiscuous mode
Oct 12 13:40:57 Test sshd(pam_unix)[3290]: session opened for user root by (uid=0)
Oct 12 14:08:45 Test sshd(pam_unix)[4028]: session opened for user root by (uid=0)
Oct 12 14:17:51 Test sshd(pam_unix)[5891]: session opened for user root by (uid=0)
Oct 12 14:18:10 Test sshd(pam_unix)[5891]: session closed for user root
Oct 12 14:18:39 Test sshd(pam_unix)[5916]: session opened for user root by (uid=0)
Oct 12 14:18:40 Test sshd(pam_unix)[5916]: session closed for user root
Oct 12 14:18:55 Test sshd(pam_unix)[5925]: session opened for user root by (uid=0)
Oct 12 14:18:58 Test sshd(pam_unix)[5925]: session closed for user root
Oct 12 14:19:11 Test sshd(pam_unix)[5943]: session opened for user root by (uid=0)
Oct 12 14:19:18 Test sshd(pam_unix)[5943]: session closed for user root
Oct 12 14:19:29 Test sshd(pam_unix)[5952]: session opened for user root by (uid=0)
Oct 12 14:19:30 Test sshd(pam_unix)[5952]: session closed for user root
Oct 12 14:19:39 Test sshd(pam_unix)[5961]: session opened for user root by (uid=0)
Oct 12 14:19:52 Test sshd(pam_unix)[5961]: session closed for user root
Oct 12 16:19:56 Test sshd(pam_unix)[7836]: session opened for user root by (uid=0)
Oct 12 16:20:19 Test sshd(pam_unix)[7836]: session closed for user root
Oct 12 16:40:13 Test sshd(pam_unix)[8047]: session opened for user root by (uid=0)
Oct 12 16:40:25 Test sshd(pam_unix)[8047]: session closed for user root
Oct 12 16:45:36 Test kernel: Mem-info:
Oct 12 16:45:36 Test kernel: Free swap:       2097136kB
Oct 12 16:45:36 Test kernel: 524272 pages of RAM
Oct 12 16:45:36 Test kernel: 294896 pages of HIGHMEM
Oct 12 16:45:36 Test kernel: 5881 reserved pages
Oct 12 16:45:36 Test kernel: 30793 pages shared
Oct 12 16:45:36 Test kernel: 0 pages swap cached
Oct 12 16:45:36 Test kernel: 50 pages dirty
Oct 12 16:45:36 Test kernel: 0 pages writeback
Oct 12 16:45:36 Test kernel: 10019 pages mapped
Oct 12 16:45:36 Test kernel: 199547 pages slab
Oct 12 16:45:36 Test kernel: 358 pages pagetables
Oct 12 16:45:36 Test kernel: Mem-info:
Oct 12 16:45:36 Test kernel: Free swap:       2097136kB
Oct 12 16:45:36 Test kernel: 524272 pages of RAM
Oct 12 16:45:36 Test kernel: 294896 pages of HIGHMEM
Oct 12 16:45:36 Test kernel: 5881 reserved pages
Oct 12 16:45:36 Test kernel: 30729 pages shared
Oct 12 16:45:36 Test kernel: 0 pages swap cached
Oct 12 16:45:36 Test kernel: 50 pages dirty
Oct 12 16:45:36 Test kernel: 0 pages writeback
Oct 12 16:45:36 Test kernel: 10019 pages mapped
Oct 12 16:45:36 Test kernel: 199561 pages slab
Oct 12 16:45:36 Test kernel: 358 pages pagetables
Oct 12 16:45:36 Test kernel: Mem-info:
Oct 12 16:45:36 Test kernel: Free swap:       2097136kB
Oct 12 16:45:36 Test kernel: 524272 pages of RAM
Oct 12 16:45:36 Test kernel: 294896 pages of HIGHMEM
Oct 12 16:45:36 Test kernel: 5881 reserved pages
Oct 12 16:45:36 Test kernel: 30729 pages shared
Oct 12 16:45:36 Test kernel: 0 pages swap cached
Oct 12 16:45:36 Test kernel: 50 pages dirty
Oct 12 16:45:36 Test kernel: 0 pages writeback
Oct 12 16:45:36 Test kernel: 10019 pages mapped
Oct 12 16:45:36 Test kernel: 199570 pages slab
Oct 12 16:45:36 Test kernel: 358 pages pagetables
Oct 12 16:45:36 Test kernel: Mem-info:
Oct 12 16:45:36 Test kernel: Free swap:       2097136kB
Oct 12 16:45:36 Test kernel: 524272 pages of RAM
Oct 12 16:45:36 Test kernel: 294896 pages of HIGHMEM
Oct 12 16:45:36 Test kernel: 5881 reserved pages
Oct 12 16:45:36 Test kernel: 30697 pages shared
Oct 12 16:45:36 Test kernel: 0 pages swap cached
Oct 12 16:45:36 Test kernel: 50 pages dirty
Oct 12 16:45:36 Test kernel: 0 pages writeback
Oct 12 16:45:36 Test kernel: 10019 pages mapped
Oct 12 16:45:36 Test kernel: 199639 pages slab
Oct 12 16:45:36 Test kernel: 358 pages pagetables
Oct 12 16:45:36 Test kernel: Mem-info:
Oct 12 16:45:36 Test kernel: Free swap:       2097136kB
Oct 12 16:45:36 Test kernel: 524272 pages of RAM
Oct 12 16:45:36 Test kernel: 294896 pages of HIGHMEM
Oct 12 16:45:36 Test kernel: 5881 reserved pages
Oct 12 16:45:36 Test kernel: 30697 pages shared
Oct 12 16:45:36 Test kernel: 0 pages swap cached
Oct 12 16:45:36 Test kernel: 50 pages dirty
Oct 12 16:45:36 Test kernel: 0 pages writeback
Oct 12 16:45:36 Test kernel: 10019 pages mapped
Oct 12 16:45:36 Test kernel: 199591 pages slab
Oct 12 16:45:36 Test kernel: 358 pages pagetables
Oct 12 16:45:36 Test kernel: Mem-info:
Oct 12 16:45:36 Test kernel: Free swap:       2097136kB
Oct 12 16:45:36 Test kernel: 524272 pages of RAM
Oct 12 16:45:36 Test kernel: 294896 pages of HIGHMEM
Oct 12 16:45:36 Test kernel: 5881 reserved pages
Oct 12 16:45:36 Test kernel: 30665 pages shared
Oct 12 16:45:36 Test kernel: 0 pages swap cached
Oct 12 16:45:36 Test kernel: 50 pages dirty
Oct 12 16:45:36 Test kernel: 0 pages writeback
Oct 12 16:45:36 Test kernel: 10019 pages mapped
Oct 12 16:45:36 Test kernel: 199593 pages slab
Oct 12 16:45:36 Test kernel: 358 pages pagetables
Oct 12 16:45:36 Test kernel: Mem-info:
Oct 12 16:45:36 Test kernel: Free swap:       2097136kB
Oct 12 16:45:36 Test kernel: 524272 pages of RAM
Oct 12 16:45:36 Test kernel: 294896 pages of HIGHMEM
Oct 12 16:45:36 Test kernel: 5881 reserved pages
Oct 12 16:45:36 Test kernel: 30665 pages shared
Oct 12 16:45:36 Test kernel: 0 pages swap cached
Oct 12 16:45:36 Test kernel: 50 pages dirty
Oct 12 16:45:36 Test kernel: 0 pages writeback
Oct 12 16:45:36 Test kernel: 10019 pages mapped
Oct 12 16:45:36 Test kernel: 199619 pages slab
Oct 12 16:45:36 Test kernel: 358 pages pagetables
Oct 12 16:45:36 Test kernel: Mem-info:
Oct 12 16:45:36 Test kernel: Free swap:       2097136kB
Oct 12 16:45:36 Test kernel: 524272 pages of RAM
Oct 12 16:45:36 Test kernel: 294896 pages of HIGHMEM
Oct 12 16:45:36 Test kernel: 5881 reserved pages
Oct 12 16:45:36 Test kernel: 30633 pages shared
Oct 12 16:45:36 Test kernel: 0 pages swap cached
Oct 12 16:45:36 Test kernel: 50 pages dirty
Oct 12 16:45:36 Test kernel: 0 pages writeback
Oct 12 16:45:36 Test kernel: 10019 pages mapped
Oct 12 16:45:36 Test kernel: 199669 pages slab
Oct 12 16:45:36 Test kernel: 358 pages pagetables
Oct 12 16:45:36 Test kernel: Mem-info:
Oct 12 16:45:36 Test kernel: Free swap:       2097136kB
Oct 12 16:45:36 Test kernel: 524272 pages of RAM
Oct 12 16:45:36 Test kernel: 294896 pages of HIGHMEM
Oct 12 16:45:36 Test kernel: 5881 reserved pages
Oct 12 16:45:36 Test kernel: 30601 pages shared
Oct 12 16:45:36 Test kernel: 0 pages swap cached
Oct 12 16:45:36 Test kernel: 50 pages dirty
Oct 12 16:45:36 Test kernel: 0 pages writeback
Oct 12 16:45:36 Test kernel: 10019 pages mapped
Oct 12 16:45:36 Test kernel: 199676 pages slab
Oct 12 16:45:36 Test kernel: 358 pages pagetables
Oct 12 16:45:43 Test kernel: Mem-info:
Oct 12 16:45:43 Test kernel: Free swap:       2097136kB
Oct 12 16:45:43 Test kernel: 524272 pages of RAM
Oct 12 16:45:43 Test kernel: 294896 pages of HIGHMEM
Oct 12 16:45:43 Test kernel: 5881 reserved pages
Oct 12 16:45:43 Test kernel: 18795 pages shared
Oct 12 16:45:43 Test kernel: 0 pages swap cached
Oct 12 16:45:43 Test kernel: 26 pages dirty
Oct 12 16:45:43 Test kernel: 0 pages writeback
Oct 12 16:45:43 Test kernel: 10022 pages mapped
Oct 12 16:45:43 Test kernel: 209923 pages slab
Oct 12 16:45:43 Test kernel: 358 pages pagetables
Oct 12 16:45:47 Test kernel: Mem-info:
Oct 12 16:45:47 Test kernel: Free swap:       2097136kB
Oct 12 16:45:47 Test kernel: 524272 pages of RAM
Oct 12 16:45:47 Test kernel: 294896 pages of HIGHMEM
Oct 12 16:45:47 Test kernel: 5881 reserved pages
Oct 12 16:45:47 Test kernel: 17838 pages shared
Oct 12 16:45:47 Test kernel: 0 pages swap cached
Oct 12 16:45:47 Test kernel: 26 pages dirty
Oct 12 16:45:47 Test kernel: 0 pages writeback
Oct 12 16:45:47 Test kernel: 10022 pages mapped
Oct 12 16:45:47 Test kernel: 210951 pages slab
Oct 12 16:45:47 Test kernel: 358 pages pagetables 
Oct 16 17:35:28 Test kernel: BIOS-provided physical RAM map:
Oct 16 17:35:28 Test kernel: found SMP MP-table at 000f4af0
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프로그램 테스트중 리눅스가 죽어버리는 현상이 발생했습니다.

리눅스 서버에서 윈도우 클라이언트 프로그램으로 트래픽 정보를 보내주는 프로그램인데

갑자기 서버쪽에서 데이터가 안넘어 오더니...

무슨 문제인가 확인을 해보려 SSH접속을 해봤지만 연결 할수가 없었습니다

(SSH 접속이 안됬을때 ethereal로 덤프를 떠보니 3way handshaking 까지 하고

그 다음부터 아무 반응이 없었습니다..)

ping을 해보니 잘 나가다가 1시간정도 안돼서 ping도 안나가더군요.

위에 있는 로그가 재부팅후에 확인한 로그 내용입니다.

리눅스가 죽은 시점이 마지막줄에서 3번째 부분입니다.

위 로그가 어떤 내용인지 조언 부탁드립니다..

참! 또 궁금한 점이 있는데

사용자가 실행시킨 프로그램에 의해서 리눅스가 죽을수 있는건가요?

테스트 했던 서버프로그램이 리소스를 많이 잡아먹긴 하는데

(메모리 점유율이 10%미만이고.. CPU는 99% 점유.. )

혹시 이것때문에 문제가 발생할수 있는걸까요??

조언좀 부탁드리겠습니다..

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