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ÀÛ¼ºÀÚ °ü¸®ÀÚ ÀÛ¼º½Ã°£ 2004-03-16 00:12:29
 

..  SUN ±â¼úÀÚ·á
---- ½Ã½ºÅÛ ºÎÇÏ ÃøÁ¤ ----

1. ¿ë·® È®ÀÎ
1.1 Sun O/S ÀÏ °æ¿ì
# df
1.2 SolarisÀÏ °æ¿ì
# df -k
(Âü°í)¸¸¾à root filesystemÀÌ 90% ÀÌ»óÀÏ °æ¿ì ȨÆäÀÌÁö¿¡ÀÖ´Â find ¸í·É¾î »ç¿ë¹ýÀ» ÂüÁ¶ÇÏ¿©
ºñÁ¤»óÀûÀ¸·Î »ý¼ºµÈ fileÀ» »èÁ¦Ç϶ó. ±×¸®°í root filesystem¿¡ userÀÇ directory°¡ ÀÖ´ÂÁö
»ìÆì º¸¾Æ¶ó. ƯÈ÷ backup ½Ã device ¸íÀ» À߸ø Á־ file·Î ÀúÀåµÇ¾î¼­ ½Ã½ºÅÛÀÌ full µÇ´Â
°æ¿ì°¡ ¸¹À½
(Âü°í) Find ¸í·É¾î »ç¿ë¹ý
1. /usr¿¡ 50,000 charactersº¸´Ù Å« È­ÀÏ Ã£¾Æ¶ó.
# find /usr -type f -size +50000c -print
2. core fileÀ» »èÁ¦Ç϶ó.
# find / -name core -type f -exec rm {} \;
3. /usr/src¿¡¼­ À̸§ÀÌ mem*.cÀΰÍÀ» ã¾Æ¶ó.
# find /usr/src -type f -name "mem*.c" -print
4. owner°¡ rootÀÌ°í set-user-ID¸¦ °¡Áö´Â ¸ðµç È­ÀÏÀ» ã¾Æ¶ó.
# find / -perm -04000 -user root -type f -exec ls -l {} \;
5. ÃÖ±Ù ÀÌƲ³»¿¡ ¾²¿©Áø È­ÀÏÀ» ã¾Æ¶ó.
# find /usr -ctime -2 -print
6. ÃÖ±Ù ÀÌƲ³»¿¡ ¾²¿©Áö°í Å©±â°¡ 10,000byteÀÌ»óÀÎ È­ÀÏÀ̳ª µð·ºÅ丮¸¦ ã¾Æ¶ó.
# find /usr -ctime -2 -size +10000c -exec ls -l {} \;



2. CPU ¿ë·® check
2.1 MP Control and Monitoring
* Processor control and information
* psrinfo - »ç¿ë°¡´ÉÇÑ CPU¸¦ º¸¿©ÁØ´Ù.
# psrinfo
0 on-line since 09/05/97 10:49:27
2 on-line since 09/05/97 10:49:31
* psradm - Enable or disable CPUs
# psradm -f 2 -> 2¹ø CPU¸¦ off-line
# psrinfo
0 on-line since 09/05/97 11:16:04
2 off-line since 09/05/97 11:18:34
# psradm -n -a -> ¸ðµç process¸¦ on-line
2.2 CPU Rules for the SOlaris 2.x Operating Environment
- vmstat 30 or mpstat 30
conditionConclusion
0 == rCPU idle
0 < r / ncpus < 3.0No problem
3.0 <= r / ncpus <= 5CPU busy
5.0 <= r /ncpusCPU very busy
smtx < 200No problem
200 <= smtx < 400Mutex stall
400 <= smtxMutex stall


- psrinfo | grep -c on (CPU ÀÇ °³¼ö)
5. Swap space check
# vmstat 30
ConditionConclusion
100,000K <= swap Swap waste
10,000K <= swap < 100,000KNo problem
4,000K <= swap < 10,000KSwap low
1,000K <= swap < 4,000KSwap very low
swap < 1,000KNo swap

Action to Take
* Swap Low - ½ÇÇàµÇ´Â ÇÁ·Î±×·¥ ¼ö¸¦ ÁÙÀÌ°í, swap space¸¦ ´Ã·Á¶ó.
* No Swap - ÇÁ·Î±×·¥ÀÌ ¸ØÃâ °ÍÀÌ´Ù. Áï½Ã swap space¸¦ ´Ã·Á¶ó.
(Âü°í)Swap space ¸¦ ´Ã¸®·Á¸é
1. Sun O/S 4.x ÀÏ°æ¿ì
# mkfile 40m /user/swap (40mb size)
# swapon /user/swap
# pstat -T (swap size È®ÀÎ)
# vi /etc/fstab
/usr/swap swap swap rw 0 0
- swap file »èÁ¦
# rm /user/swap
# vi /etc/fstab - addÇÑ entry ¸¦ »èÁ¦ 

2. Solaris 2.x ÀÏ °æ¿ì
# /usr/sbin/mkfile 40m /user/swapfile
# swap -a /user/swapfile (O/S¿¡ swap fileÀ» Ãß°¡ÇÔ)
# swap -l
# vi /etc/vfstab
/user/swapfile - - swap - no - ( À̶óÀÎÀ» Ãß°¡)
# swap -s
total : 5828kbytes allocated + 2456k reserved = 8284k used, 103792k
available
( allocated : ÇöÀç »ç¿ë, reserved : kernelÀÌ Àâ¾Æ³õÀ½ , available : »ç¿ëÇÒ¼ö Àִ¾ç)
# swap -d /user/swapfile (swap addÇÑ fileÀ» »èÁ¦)
.

6. Memory ¿ë·® check
# vmstat 30
ConditionConclusion
sr == 0RAM waste
0 < sr < 200No problem
200 <= sr < 300Low RAM
300 <= srVery low RAM


* Low RAM - ¸Þ¸ð¸®¸¦ Áõ¼³ÇؾßÇÑ´Ù.
7. Disk ºÎÇÏ check
# iostat -x 30
* svc_t (avque + avwait) : disk ÀÀ´ä½Ã°£
* 10 - 50 acceptable
* 100 - 1500 not acceptable
* %b : µð½ºÅ©¸¦ ¾ó¸¶³ª ¸¹ÀÌ ¾²´Â°¡?
* 5% ÀÌÇÏ´Â ¹«½Ã
* 60% ÀÌ»óÀ̸é Á¶Á¤ÇÒ ÇÊ¿ä°¡ÀÖ´Ù.
8. Network ºÎÇÏ Check
# netstat -i 30
ConditionConclusion
(0 packets)<0.5%)&&(other nets OK)Inactive network
(0 packets)<1.5%)&&(other nets busy)Unbalanced
(10<=output packets)&&(0.5%<=100*output colls/output packets
<2.0%)No problem
(10 <= output packets)&&(2.0%<=100*output colls/output
packets<5.0%)Busy network
(10<=output packets)&&(5.0%<=100*output colls/output packets)Very
Busy Net
network type is not ie,le,ne or qe;it is bf or nfNot Ethernet


* Busy Network - ³×Æ®¿÷¿¡ ³Ê¹«³ª ¸¹Àº Ãæµ¹ÀÌ »ý°Ü¼­ »ç¿ëÀÚµéÀÌ ÀÀ´äÀ» ±â´Ù¸®´Â ´Ã¾î³ª °í throughputÀÌ
°¨¼ÒÇÑ´Ù. ¸¸¾à ´Ù¸¥ ³×Æ®¿÷ÀÌ ÀÖ´Ù¸é ºÎÇϸ¦ ÁÖ´Â °ÍÀ» ºÎÇÏ°¡¾ø´Â ³×Æ®¿÷ À¸·Î ¿Å°Ü¶ó. ¶Ç´Â ATM À̳ª 100-MB
Ethernet, FDDI°°Àº ºü¸¥ ³×Æ®¿÷À¸·Î upgradeÇ϶ó.
9. System error messages check
# vi /var/adm/messages
# cd /var/adm
# grep panic *
# grep error *
# grep warning *
10. system Á¤º¸ Ãâ·Â
# /usr/platform/'uname -i'/sbin/prtdiag (this show usefull hardware
information and failures of system)
# /etc/prtvtoc (show the detail information of disk slice ex) prtvtoc
/dev/dsk/c0t0d0s2)
# /usr/sbin/eeprom (user can set some of variables of NVRAM via this
command ex) eeprom boot-device=disk3)
# /usr/sbin/prtconf -vp ( Shows device configuration )
# devinfo -vp (Shows device configuration for Solaris 1.x)
# /usr/sbin/sysdef ( Shows software configuration )
# /usr/bin/dmesg | more ( collect system diagnostic messages to form error
log
# /usr/proc/bin/ptree (Process trees that contain the process)
# /usr/proc/bin/pwdx pid ( Current working directory for a process)
# /usr/proc/bin/pldd pid ( Dynamic libraries linked into a process)
# /usr/proc/bin/pmap pid ( Address space map)

11. Performance gathering script
date >> /sunsolv/hangdata/vmstat.out
vmstat 30 10 >> /sunsolv/hangdata/vmstat.out
date >> /sunsolv/hangdata/iostat.out
iostat -xtc 30 10 >> /sunsolv/hangdata/iostat.out
date >> /sunsolv/hangdata/ps.out
/usr/ucb/ps -aux >> /sunsolv/hangdata/ps.out
date >> /sunsolv/hangdata/kmstat.out
echo kmastat | crash >> /sunsolv/hangdata/kmstat.out
date >> /sunsolv/hangdata/kernelmap.out
echo "map kernelmap" | crash >> /sunsolv/hangdata/kernelmap.out
À§ ¸í·É¾î¸¦ ¸Å 15ºÐ ¸¶´Ù ½ÇÇà Çϵµ·Ï crontab¿¡ µî·ÏÇسõ´Â´Ù.


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