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"해당 웹페이지를 사용할 수 없음"의 두 판 사이의 차이

잔글 (conf 문법 강조)
잔글 (봇: 자동으로 텍스트 교체 (-</source> +</syntaxhighlight>))
6번째 줄: 6번째 줄:
<source lang='text'>
<source lang='text'>
해당 웹페이지를 사용할 수 없음
해당 웹페이지를 사용할 수 없음
</source>
</syntaxhighlight>


==확인==
==확인==
43번째 줄: 43번째 줄:
  8462 apache    16  0  332m  20m 6200 D  0.7  1.0  0:06.33 httpd   
  8462 apache    16  0  332m  20m 6200 D  0.7  1.0  0:06.33 httpd   
  8573 apache    16  0  328m  28m 6020 D  0.7  1.4  0:04.50 httpd  
  8573 apache    16  0  328m  28m 6020 D  0.7  1.4  0:04.50 httpd  
</source>
</syntaxhighlight>
<source lang='console'>
<source lang='console'>
top - 12:47:30 up 41 days, 21:11,  1 user,  load average: 89.30, 107
top - 12:47:30 up 41 days, 21:11,  1 user,  load average: 89.30, 107
74번째 줄: 74번째 줄:
  8962 apache    18  0  333m  20m 5180 D  1.3  1.0  0:03.40 httpd   
  8962 apache    18  0  333m  20m 5180 D  1.3  1.0  0:03.40 httpd   
  8331 apache    18  0  226m  12m 3428 R  0.9  0.6  0:06.48 httpd  
  8331 apache    18  0  226m  12m 3428 R  0.9  0.6  0:06.48 httpd  
</source>
</syntaxhighlight>


==복구==
==복구==
81번째 줄: 81번째 줄:
[root@zetawiki ~]# service varnish stop
[root@zetawiki ~]# service varnish stop
Stopping Varnish Cache:                                    [  OK  ]
Stopping Varnish Cache:                                    [  OK  ]
</source>
</syntaxhighlight>
<source lang='console'>
<source lang='console'>
[root@zetawiki ~]# service httpd stop
[root@zetawiki ~]# service httpd stop
Stopping httpd:                                            [  OK  ]
Stopping httpd:                                            [  OK  ]
</source>
</syntaxhighlight>
<source lang='console'>
<source lang='console'>
[root@zetawiki ~]# service httpd start
[root@zetawiki ~]# service httpd start
Starting httpd:                                            [  OK  ]
Starting httpd:                                            [  OK  ]
</source>
</syntaxhighlight>
<source lang='console'>
<source lang='console'>
[root@zetawiki ~]# service varnish start
[root@zetawiki ~]# service varnish start
Starting Varnish Cache:                                    [  OK  ]
Starting Varnish Cache:                                    [  OK  ]
</source>
</syntaxhighlight>


==확인 2==
==확인 2==
128번째 줄: 128번째 줄:
   12 root      34  19    0    0    0 S  0.0  0.0  0:00.10 ksoftirq
   12 root      34  19    0    0    0 S  0.0  0.0  0:00.10 ksoftirq
   13 root      RT  -5    0    0    0 S  0.0  0.0  0:00.01 watchdog
   13 root      RT  -5    0    0    0 S  0.0  0.0  0:00.01 watchdog
</source>
</syntaxhighlight>


==messages 로그==
==messages 로그==
150번째 줄: 150번째 줄:
Nov 11 03:49:12 zetawiki varnishd[9433]: Child (9437) said Child starts
Nov 11 03:49:12 zetawiki varnishd[9433]: Child (9437) said Child starts
Nov 11 03:49:12 zetawiki varnishd[9433]: Child (9437) said SMF.s0 mmap'ed 1073741824 bytes of 1073741824
Nov 11 03:49:12 zetawiki varnishd[9433]: Child (9437) said SMF.s0 mmap'ed 1073741824 bytes of 1073741824
</source>
</syntaxhighlight>


==조치: ServerLimit 상향 조정 ==
==조치: ServerLimit 상향 조정 ==
157번째 줄: 157번째 줄:
[root@zetawiki ~]# httpd -V | grep "^Server MPM"
[root@zetawiki ~]# httpd -V | grep "^Server MPM"
Server MPM:    Prefork
Server MPM:    Prefork
</source>
</syntaxhighlight>
*[[httpd.conf]]의 prefork 변수 상향 조정<ref>대기 속성(StartServers 등)은 2배, 최대 속성(ServerLimit 등)은 8배로 높임</ref>
*[[httpd.conf]]의 prefork 변수 상향 조정<ref>대기 속성(StartServers 등)은 2배, 최대 속성(ServerLimit 등)은 8배로 높임</ref>
<source lang='aconf'>
<source lang='aconf'>
174번째 줄: 174번째 줄:
MaxRequestsPerChild  32000
MaxRequestsPerChild  32000
</IfModule>
</IfModule>
</source>
</syntaxhighlight>
*아파치 재시작
*아파치 재시작
<source lang='console'>
<source lang='console'>
180번째 줄: 180번째 줄:
Stopping httpd:                                            [  OK  ]
Stopping httpd:                                            [  OK  ]
Starting httpd:                                            [  OK  ]
Starting httpd:                                            [  OK  ]
</source>
</syntaxhighlight>


==같이 보기==
==같이 보기==

2020년 11월 2일 (월) 00:44 판

해당 웹페이지를 사용할 수 없음

1 접속 불가

Chrome에서 zetawiki.com 접속하니... <source lang='text'> 해당 웹페이지를 사용할 수 없음 </syntaxhighlight>

2 확인

top 상태 확인

<source lang='console'> [root@zetawiki ~]# top top - 12:47:27 up 41 days, 21:11, 1 user, load average: 90.02, 107 Tasks: 275 total, 2 running, 273 sleeping, 0 stopped, 0 zombie Cpu(s): 0.8%us, 13.0%sy, 0.0%ni, 0.3%id, 82.3%wa, 1.5%hi, 2.2%s Mem: 2058540k total, 2049720k used, 8820k free, 396k buf Swap: 4030456k total, 2171416k used, 1859040k free, 23796k cac 

 PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
 310 root      10  -5     0    0    0 D  1.3  0.0   1:57.41 kswapd0 
8384 apache    17   0  331m  24m 5780 D  1.3  1.2   0:05.69 httpd   
8746 apache    16   0  327m  30m 8076 D  1.3  1.5   0:03.73 httpd   
8857 apache    17   0  329m  25m 5768 D  1.3  1.2   0:03.23 httpd   
8888 apache    18   0  332m  21m 4928 D  1.3  1.1   0:04.22 httpd   
8907 apache    17   0  327m  22m 5728 D  1.3  1.1   0:03.12 httpd

15420 apache 16 0 348m 26m 9412 D 1.3 1.3 4:22.04 httpd 19038 apache 16 0 347m 25m 9260 D 1.3 1.3 3:47.38 httpd 

8383 apache    16   0  331m  27m 6468 D  1.0  1.4   0:05.76 httpd   
8386 apache    17   0  329m  27m 6104 D  1.0  1.4   0:05.23 httpd   
8571 apache    18   0  332m  22m 4892 D  1.0  1.1   0:05.25 httpd   
8948 apache    18   0  331m  21m 4624 D  1.0  1.1   0:03.20 httpd

17378 apache 16 0 349m 30m 8888 D 1.0 1.5 4:13.85 httpd 

1242 apache    16   0  339m  30m 6868 D  0.7  1.5   0:43.51 httpd   
1312 apache    16   0  338m  22m 6468 D  0.7  1.1   0:45.83 httpd   
1325 apache    18   0  338m  26m 6276 D  0.7  1.3   0:42.61 httpd   
8260 apache    16   0  333m  27m 9068 D  0.7  1.4   0:08.36 httpd   
8324 apache    17   0  333m  25m 5448 D  0.7  1.3   0:06.04 httpd   
8385 apache    17   0  324m  23m 6092 D  0.7  1.2   0:05.70 httpd   
8413 apache    17   0  331m  24m 5252 D  0.7  1.2   0:05.57 httpd   
8462 apache    16   0  332m  20m 6200 D  0.7  1.0   0:06.33 httpd   
8573 apache    16   0  328m  28m 6020 D  0.7  1.4   0:04.50 httpd

</syntaxhighlight> <source lang='console'> top - 12:47:30 up 41 days, 21:11, 1 user, load average: 89.30, 107 Tasks: 275 total, 13 running, 262 sleeping, 0 stopped, 0 zombie Cpu(s): 0.6%us, 24.5%sy, 0.0%ni, 0.0%id, 69.6%wa, 1.9%hi, 3.5%s Mem: 2058540k total, 2047856k used, 10684k free, 400k buf Swap: 4030456k total, 2184016k used, 1846440k free, 23992k cac 

 PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
1256 apache    16   0  344m  30m 8556 R  2.8  1.5   0:46.73 httpd   
1242 apache    16   0  339m  30m 6840 R  1.9  1.5   0:43.57 httpd   
8292 apache    17   0  331m  24m 6728 R  1.9  1.2   0:07.54 httpd   
8383 apache    17   0  331m  27m 6436 D  1.9  1.4   0:05.82 httpd   
8573 apache    17   0  328m  28m 6000 D  1.9  1.4   0:04.56 httpd   
8828 apache    17   0  328m  25m 6468 D  1.9  1.3   0:03.98 httpd   
8907 apache    18   0  327m  22m 5728 D  1.9  1.1   0:03.18 httpd

15420 apache 16 0 348m 26m 9380 D 1.9 1.3 4:22.10 httpd 17378 apache 16 0 349m 30m 8844 D 1.9 1.5 4:13.91 httpd 

8763 apache    17   0  329m  25m 5180 D  1.6  1.3   0:05.10 httpd

16793 apache 16 0 394m 27m 8524 D 1.6 1.4 4:21.01 httpd 17925 apache 17 0 397m 28m 6580 D 1.6 1.4 3:53.98 httpd 19038 apache 16 0 347m 25m 9236 D 1.6 1.3 3:47.43 httpd 

 310 root      10  -5     0    0    0 R  1.3  0.0   1:57.45 kswapd0 
8320 apache    16   0  331m  29m  10m D  1.3  1.5   0:05.94 httpd   
8439 apache    17   0  331m  27m 6776 D  1.3  1.4   0:06.86 httpd   
8535 apache    17   0  329m  27m 5844 D  1.3  1.4   0:04.76 httpd   
8570 apache    18   0  328m  24m 4732 D  1.3  1.2   0:04.22 httpd   
8653 apache    17   0  328m  23m 4688 D  1.3  1.1   0:04.25 httpd   
8854 apache    17   0  331m  23m 5564 D  1.3  1.2   0:03.70 httpd   
8962 apache    18   0  333m  20m 5180 D  1.3  1.0   0:03.40 httpd   
8331 apache    18   0  226m  12m 3428 R  0.9  0.6   0:06.48 httpd

</syntaxhighlight>

3 복구

<source lang='console'> [root@zetawiki ~]# service varnish stop Stopping Varnish Cache: [ OK ] </syntaxhighlight> <source lang='console'> [root@zetawiki ~]# service httpd stop Stopping httpd: [ OK ] </syntaxhighlight> <source lang='console'> [root@zetawiki ~]# service httpd start Starting httpd: [ OK ] </syntaxhighlight> <source lang='console'> [root@zetawiki ~]# service varnish start Starting Varnish Cache: [ OK ] </syntaxhighlight>

4 확인 2

  • 웹사이트 접속 잘됨
  • top 현황 정상

<source lang='console'> top - 13:02:20 up 41 days, 21:26, 2 users, load average: 0.17, 6.7 Tasks: 185 total, 1 running, 184 sleeping, 0 stopped, 0 zombie Cpu(s): 0.9%us, 0.1%sy, 0.0%ni, 98.4%id, 0.5%wa, 0.0%hi, 0.1%s Mem: 2058540k total, 770092k used, 1288448k free, 6920k buf Swap: 4030456k total, 237876k used, 3792580k free, 232004k cac 

 PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
9399 apache    15   0  341m  81m  38m S  2.3  4.1   0:11.41 httpd   
9397 apache    16   0  335m  78m  38m S  1.7  3.9   0:10.79 httpd   
9398 apache    16   0  336m  77m  38m S  1.0  3.9   0:12.58 httpd   
9395 apache    16   0  392m  78m  38m S  0.7  3.9   0:10.69 httpd   
9400 apache    15   0  336m  77m  38m S  0.7  3.9   0:11.07 httpd   
9401 apache    16   0  336m  77m  38m S  0.7  3.8   0:10.00 httpd   
9437 varnish   18   0 2227m  15m 8376 S  0.7  0.8   0:02.11 varnishd

10577 root 15 0 12756 1168 836 R 0.7 0.1 0:00.05 top 

9396 apache    15   0  335m  78m  38m S  0.3  3.9   0:14.63 httpd   
   1 root      15   0 10364  488  460 S  0.0  0.0   0:02.29 init    
   2 root      RT  -5     0    0    0 S  0.0  0.0   0:06.26 migratio
   3 root      34  19     0    0    0 S  0.0  0.0   0:00.09 ksoftirq
   4 root      RT  -5     0    0    0 S  0.0  0.0   0:00.00 watchdog
   5 root      RT  -5     0    0    0 S  0.0  0.0   0:02.19 migratio
   6 root      34  19     0    0    0 S  0.0  0.0   0:00.08 ksoftirq
   7 root      RT  -5     0    0    0 S  0.0  0.0   0:00.01 watchdog
   8 root      RT  -5     0    0    0 S  0.0  0.0   0:02.19 migratio
   9 root      34  19     0    0    0 S  0.0  0.0   0:00.06 ksoftirq
  10 root      RT  -5     0    0    0 S  0.0  0.0   0:00.01 watchdog
  11 root      RT  -5     0    0    0 S  0.0  0.0   0:03.15 migratio
  12 root      34  19     0    0    0 S  0.0  0.0   0:00.10 ksoftirq
  13 root      RT  -5     0    0    0 S  0.0  0.0   0:00.01 watchdog

</syntaxhighlight>

5 messages 로그

avahi-daemon: Invalid response packet from host 문서를 참고하십시오.

<source lang='text'> Nov 9 04:02:35 zetawiki syslogd 1.4.1: restart. Nov 11 00:11:50 zetawiki avahi-daemon[3803]: Invalid response packet from host 135.79.246.161. Nov 11 12:17:19 zetawiki avahi-daemon[3803]: Invalid response packet from host 135.79.246.161. Nov 11 03:17:19 zetawiki varnishd[4098]: Child (4102) not responding to CLI, killing it. Nov 11 03:17:21 zetawiki varnishd[4098]: Child (4102) not responding to CLI, killing it. Nov 11 03:17:21 zetawiki varnishd[4098]: Child (4102) died signal=3 Nov 11 03:17:26 zetawiki varnishd[4098]: child (8808) Started Nov 11 03:17:36 zetawiki varnishd[4098]: Pushing vcls failed: CLI communication error (hdr) Nov 11 03:17:36 zetawiki varnishd[4098]: Child (8808) said Child starts Nov 11 03:17:43 zetawiki varnishd[4098]: Child (8808) said SMF.s0 mmap'ed 1073741824 bytes of 1073741824 Nov 11 03:17:43 zetawiki varnishd[4098]: Child (8808) said Child dies Nov 11 03:18:07 zetawiki varnishd[4098]: Child (8808) died status=1 Nov 11 03:48:15 zetawiki varnishd[4098]: Manager got SIGINT Nov 11 03:49:12 zetawiki varnishd[9433]: Platform: Linux,2.6.18-348.16.1.el5,x86_64,-sfile,-smalloc,-hcritbit Nov 11 03:49:12 zetawiki varnishd[9433]: child (9437) Started Nov 11 03:49:12 zetawiki varnishd[9433]: Child (9437) said Child starts Nov 11 03:49:12 zetawiki varnishd[9433]: Child (9437) said SMF.s0 mmap'ed 1073741824 bytes of 1073741824 </syntaxhighlight>

6 조치: ServerLimit 상향 조정

Server MPM이 Prefork임을 확인

<source lang='console'> [root@zetawiki ~]# httpd -V | grep "^Server MPM" Server MPM: Prefork </syntaxhighlight>

<source lang='aconf'> <IfModule prefork.c>

  1. StartServers 8
  2. MinSpareServers 5
  3. MaxSpareServers 20

StartServers 16 MinSpareServers 10 MaxSpareServers 40

  1. ServerLimit 256
  2. MaxClients 256
  3. MaxRequestsPerChild 4000

ServerLimit 2048 MaxClients 2048 MaxRequestsPerChild 32000 </IfModule> </syntaxhighlight>

  • 아파치 재시작

<source lang='console'> [root@zetawiki ~]# service httpd restart Stopping httpd: [ OK ] Starting httpd: [ OK ] </syntaxhighlight>

7 같이 보기

8 주석

  1. ↑ Uninterruptible sleep ( 깨울 수 없는 잠;; )
  2. ↑ 대기 속성(StartServers 등)은 2배, 최대 속성(ServerLimit 등)은 8배로 높임
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