2707 ¹ø ±ÛÀÇ ´äÀå±Û: Re: µð¹ö±×³»¿ëÀ» ÆÄÀÏ¿¡ ³²±â´Â ¹ý |
±Û¾´ÀÌ: »êÀÌ
[ȨÆäÀÌÁö]
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±Û¾´³¯: 2007³â 09¿ù 27ÀÏ 20:06:48 ¸ñ(Àú³á) |
Á¶È¸: 2607 |
[ÀÌÇöö]´ÔÀÌ ³²±â½Å ±Û:
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>´äº¯ÀÚ°¡ ±âº»ÀûÀ¸·Î Âü°íÇÒ ³»¿ëÀÔ´Ï´Ù.
>- ¹èÆ÷ÆÇ(¿É¼Ç) :
>- Ä¿³Î¹öÀü(¿É¼Ç) :
>- µ¥¸ó¹öÀü(¿¹:apache 1.3.27) :
>- µ¥¸ó¼³Ä¡À¯Çü(RPM/ÄÄÆÄÀÏ/±âŸ)
:
>-----------------------------------------
>*Áß¿ä:ÇÑ±Û ¹®ÀÚ°¡ Çϳªµµ ¾øÀ¸¸é ½ºÆÔÆäÀÌÁö·Î À̵¿ÇÕ´Ï´Ù(½ºÆÔ ÇÊÅ͸µ).
>
>
>¿À´Ãµµ »êÀÌ´ÔÀÇ Á¶¾ðÀ» ¾ò°íÀÚ ÇÕ´Ï´Ù.
>´Ù¸§ÀÌ ¾Æ´Ï¶ó, ¼¹ö¿¡ µ¹°í ÀÖ´Â ÇÁ·Î±×·¥ÀÌ µ¹´Ù¸é¼ ¾î´À»õ
>cpu°¡ 99% ³ª¹ö·Á¼..
>¾Æ¹«·¡µµ ÇÁ·Î±×·¥ÀÌ ¹®Á¦ ÀÎ°Í °°¾Æ.. µð¹ö±× ¸ðµåÇüÅ·ΠºÐ¼®À» ÇÒ·Á°í
ÇÕ´Ï´Ù.
>strace -p 22626 | tee -a strace.log
>
>À§¿Í°°ÀÌ strace¸í·É¾î·Î ÇÁ·Î±×·¥PID¸¦ µð¹ö±× Çؼ ·Î±×·Î ³²±â·Á Çϴµ¥..tee¸í·É¾î·Î
°ªÀÌ ³Ñ¾î ¿ÀÁö¾Ê³×¿ä..
>µð¹ö±×¸¦ ÆÄÀÏÇüÅ·Π·Î±× ³²±â´Â ÁÁÀº ¹æ¹ýÀÌ ¾øÀ»±î¿ä?
>
strace ´Â Á¦°¡ °ÅÀÇ »ç¿ëÇØ º¸Áú ¾Ê¾Æ Àß ¸ð¸£°ÚÁö¸¸
strace -fFp pid
ÀÌ·±½ÄÀ¸·Î ÇßÀ» °æ¿ì, ¿ì¼± ȸ鿡 Ãâ·ÂµÇ´ÂÁö È®ÀÎÇÏ°í
strace -fFp pid 2>&1 | tee -a strace.log
ÀÌ ¹æ¹ýÀ¸·Î Çغ¸¼¼¿ä.
>
>¶Ç Çϳª´Â¿ä... netstat¹ö±× ÀÎÁö ¸ð¸£°ÚÁö¸¸¿ä.
>½ÇÁ¦ ¼¹ö ¾ÆÀÌÇÇ´Â 192.168.100.202ÀÔ´Ï´Ù¸¸.
>netstat·Î º¸¸é 192.168.100.202:22 ·Î Á¦´ë·Î Ç¥½ÃµÇ´Â
>ºÎºÐµµ ÀÖÁö¸¸, 192.168.100.20:20010 ÇüÅ·Π192.168.100.20ÇüÅ·Î
>º¸ÀÔ´Ï´Ù.
>¸¶Á÷¸· ºÎºÐÀÇ IP°¡ 202¾Æ´Ï°í 20ÇüÅ·Πº¸ÀÌ´Â ÀÌÀ¯¸¦ ¸ð¸£°Ú½À´Ï´Ù.
>´Ü¼øÈ÷ netstatÀÇ ¹ö±×Àϱî¿ä..
>[tel@ap2 tcpdump-AP2]$ netstat -na
>0 ::ffff:192.168.100.202:22 ::ffff:63.195.149.81:47854 ESTABLISHED
>tcp 0 0 ::ffff:192.168.100.20:20010 ::ffff:123.200.79.253:2339
ESTABLISHED
>tcp 0
>tcp 0 0 ::ffff:192.168.100.20:20010 ::ffff:214.249.100.224:1708
ESTABLISHED
>tcp 0 0 ::ffff:192.168.100.202:22 ::ffff:64.195.149.81:47889
ESTABLISHED
>tcp 0 0 ::ffff:192.168.100.20:20010 ::ffff:215.249.98.240:1236
ESTABLISHED
ifconfig À¸·Î ½ÇÁ¦ 192.168.100.20 ÀÎÅÍÆäÀ̽º°¡ ÀÖ´ÂÁö È®ÀÎÇØ º¸¼¼¿ä.
¹ö±×°¡ ¾Æ´Ï¶ó¸é ¾ø´Â ÀÎÅÍÆäÀ̽º°¡ »ý±æ ¼ö´Â ¾ø½À´Ï´Ù.
netstat -atnp ÀÇ °á°ú¿¡¼ 20010 Æ÷Æ®°¡ ¾î´À ÇÁ·Î±×·¥¿¡¼ »ç¿ëÇÏÁö´Âµµ È®ÀÎÇØ º¸¼¼¿ä.
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ÀÌÀü±Û : µð¹ö±×³»¿ëÀ» ÆÄÀÏ¿¡ ³²±â´Â ¹ý
´ÙÀ½±Û : read-only file system ¿¡ ´ëÇؼ
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