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[系统管理] 求助,如何从message里分析cpu满负荷的原因? [复制链接]

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2015年迎新春徽章
日期:2015-03-04 09:55:28
发表于 2015-06-25 20:51 |显示全部楼层
服务器是阿里云ecs,今天晚上7点多,收到百度云监控短信报警,说网站访问不了,当时在车上,也没注意看,到家后上电梯时,收到的故障恢复的短信,回来开电脑看了阿里云的监控,发现18:50-19:20之间,cpu使用率100%,其他内存,磁盘无异常,本人php小程序员一枚,特来请教各位运维高手,是否可以从message系统日志里分析出cpu异常的原因,附件为Jun 21至今的message日志压缩包。
多谢大家了~ message.zip (632.71 KB, 下载次数: 17)

求职 : Linux运维
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日期:2015-06-09 22:20:00
发表于 2015-06-25 22:14 |显示全部楼层
路过关注   

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日期:2016-08-18 06:20:00
发表于 2015-06-26 12:10 |显示全部楼层
多处httpd导致内存耗尽被强杀的记录,你检查一下代码,是否有请求和使用资源未关闭的情况,反复请求资源会导致oom

Jun 24 22:55:34 iZ28d1grylmZ kernel: Out of memory: Kill process 5651 (httpd) score 22 or sacrifice child
Jun 24 22:55:34 iZ28d1grylmZ kernel: Killed process 5651, UID 500, (httpd) total-vm:560944kB, anon-rss:41584kB, file-rss:660kB
Jun 24 22:55:34 iZ28d1grylmZ kernel: httpd invoked oom-killer: gfp_mask=0x201da, order=0, oom_adj=0, oom_score_adj=0
Jun 24 22:55:34 iZ28d1grylmZ kernel: httpd cpuset=/ mems_allowed=0
Jun 24 22:55:34 iZ28d1grylmZ kernel: Pid: 6025, comm: httpd Not tainted 2.6.32-358.6.2.el6.x86_64 #1

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2015年迎新春徽章
日期:2015-03-04 09:55:28
发表于 2015-06-29 21:27 |显示全部楼层
回复 3# jixuuse


    如果是httpd的话,应该是apache应付不过来并发了吧?需要加配置吗?

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发表于 2015-06-30 21:01 |显示全部楼层
你可以监控一下阿里云盾里的"流量"和“报文速率”的变化

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ChinaUnix元老
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发表于 2015-07-01 20:45 |显示全部楼层
回复 4# xinglu1983


    httpd.conf发出来看看

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发表于 2015-07-03 11:14 |显示全部楼层
本帖最后由 xinglu1983 于 2015-07-03 11:15 编辑

回复 6# Shell_HAT
  1. #
  2. # This is the main Apache HTTP server configuration file.  It contains the
  3. # configuration directives that give the server its instructions.
  4. # See <URL:http://httpd.apache.org/docs/2.2> for detailed information.
  5. # In particular, see
  6. # <URL:http://httpd.apache.org/docs/2.2/mod/directives.html>
  7. # for a discussion of each configuration directive.
  8. #
  9. # Do NOT simply read the instructions in here without understanding
  10. # what they do.  They're here only as hints or reminders.  If you are unsure
  11. # consult the online docs. You have been warned.  
  12. #
  13. # Configuration and logfile names: If the filenames you specify for many
  14. # of the server's control files begin with "/" (or "drive:/" for Win32), the
  15. # server will use that explicit path.  If the filenames do *not* begin
  16. # with "/", the value of ServerRoot is prepended -- so 'log/access_log'
  17. # with ServerRoot set to '/www' will be interpreted by the
  18. # server as '/www/log/access_log', where as '/log/access_log' will be
  19. # interpreted as '/log/access_log'.

  20. #
  21. # ServerRoot: The top of the directory tree under which the server's
  22. # configuration, error, and log files are kept.
  23. #
  24. # Do not add a slash at the end of the directory path.  If you point
  25. # ServerRoot at a non-local disk, be sure to point the LockFile directive
  26. # at a local disk.  If you wish to share the same ServerRoot for multiple
  27. # httpd daemons, you will need to change at least LockFile and PidFile.
  28. #
  29. ServerRoot "/alidata/server/httpd"

  30. #
  31. # Listen: Allows you to bind Apache to specific IP addresses and/or
  32. # ports, instead of the default. See also the <VirtualHost>
  33. # directive.
  34. #
  35. # Change this to Listen on specific IP addresses as shown below to
  36. # prevent Apache from glomming onto all bound IP addresses.
  37. #
  38. #Listen 12.34.56.78:80
  39. Listen 80

  40. #
  41. # Dynamic Shared Object (DSO) Support
  42. #
  43. # To be able to use the functionality of a module which was built as a DSO you
  44. # have to place corresponding `LoadModule' lines at this location so the
  45. # directives contained in it are actually available _before_ they are used.
  46. # Statically compiled modules (those listed by `httpd -l') do not need
  47. # to be loaded here.
  48. #
  49. # Example:
  50. # LoadModule foo_module modules/mod_foo.so
  51. #
  52. LoadModule authn_file_module modules/mod_authn_file.so
  53. #LoadModule authn_dbm_module modules/mod_authn_dbm.so
  54. #LoadModule authn_anon_module modules/mod_authn_anon.so
  55. #LoadModule authn_dbd_module modules/mod_authn_dbd.so
  56. LoadModule authn_default_module modules/mod_authn_default.so
  57. LoadModule authz_host_module modules/mod_authz_host.so
  58. #LoadModule authz_groupfile_module modules/mod_authz_groupfile.so
  59. LoadModule authz_user_module modules/mod_authz_user.so
  60. #LoadModule authz_dbm_module modules/mod_authz_dbm.so
  61. #LoadModule authz_owner_module modules/mod_authz_owner.so
  62. LoadModule authz_default_module modules/mod_authz_default.so
  63. LoadModule auth_basic_module modules/mod_auth_basic.so
  64. #LoadModule auth_digest_module modules/mod_auth_digest.so
  65. LoadModule file_cache_module modules/mod_file_cache.so
  66. LoadModule cache_module modules/mod_cache.so
  67. LoadModule disk_cache_module modules/mod_disk_cache.so
  68. LoadModule mem_cache_module modules/mod_mem_cache.so
  69. #LoadModule dbd_module modules/mod_dbd.so
  70. #LoadModule dumpio_module modules/mod_dumpio.so
  71. #LoadModule reqtimeout_module modules/mod_reqtimeout.so
  72. #LoadModule ext_filter_module modules/mod_ext_filter.so
  73. #LoadModule include_module modules/mod_include.so
  74. LoadModule filter_module modules/mod_filter.so
  75. #LoadModule substitute_module modules/mod_substitute.so
  76. LoadModule deflate_module modules/mod_deflate.so
  77. LoadModule log_config_module modules/mod_log_config.so
  78. LoadModule log_forensic_module modules/mod_log_forensic.so
  79. #LoadModule logio_module modules/mod_logio.so
  80. LoadModule env_module modules/mod_env.so
  81. LoadModule mime_magic_module modules/mod_mime_magic.so
  82. LoadModule cern_meta_module modules/mod_cern_meta.so
  83. LoadModule expires_module modules/mod_expires.so
  84. LoadModule headers_module modules/mod_headers.so
  85. #LoadModule ident_module modules/mod_ident.so
  86. LoadModule usertrack_module modules/mod_usertrack.so
  87. LoadModule unique_id_module modules/mod_unique_id.so
  88. LoadModule setenvif_module modules/mod_setenvif.so
  89. LoadModule version_module modules/mod_version.so
  90. LoadModule ssl_module modules/mod_ssl.so
  91. LoadModule mime_module modules/mod_mime.so
  92. #LoadModule status_module modules/mod_status.so
  93. #LoadModule autoindex_module modules/mod_autoindex.so
  94. #LoadModule asis_module modules/mod_asis.so
  95. #LoadModule info_module modules/mod_info.so
  96. #LoadModule cgi_module modules/mod_cgi.so
  97. #LoadModule vhost_alias_module modules/mod_vhost_alias.so
  98. LoadModule negotiation_module modules/mod_negotiation.so
  99. LoadModule dir_module modules/mod_dir.so
  100. #LoadModule imagemap_module modules/mod_imagemap.so
  101. #LoadModule actions_module modules/mod_actions.so
  102. LoadModule speling_module modules/mod_speling.so
  103. #LoadModule userdir_module modules/mod_userdir.so
  104. LoadModule alias_module modules/mod_alias.so
  105. LoadModule rewrite_module modules/mod_rewrite.so
  106. LoadModule php5_module        modules/libphp5.so

  107. <IfModule !mpm_netware_module>
  108. <IfModule !mpm_winnt_module>
  109. #
  110. # If you wish httpd to run as a different user or group, you must run
  111. # httpd as root initially and it will switch.  
  112. #
  113. # User/Group: The name (or #number) of the user/group to run httpd as.
  114. # It is usually good practice to create a dedicated user and group for
  115. # running httpd, as with most system services.
  116. #
  117. User www
  118. Group www

  119. </IfModule>
  120. </IfModule>

  121. <IfModule prefork.c>
  122. ServerLimit       1000
  123. StartServers       30
  124. MinSpareServers   30
  125. MaxSpareServers   45
  126. MaxClients       1000
  127. MaxRequestsPerChild  4000
  128. </IfModule>

  129. # 'Main' server configuration
  130. #
  131. # The directives in this section set up the values used by the 'main'
  132. # server, which responds to any requests that aren't handled by a
  133. # <VirtualHost> definition.  These values also provide defaults for
  134. # any <VirtualHost> containers you may define later in the file.
  135. #
  136. # All of these directives may appear inside <VirtualHost> containers,
  137. # in which case these default settings will be overridden for the
  138. # virtual host being defined.
  139. #

  140. #
  141. # ServerAdmin: Your address, where problems with the server should be
  142. # e-mailed.  This address appears on some server-generated pages, such
  143. # as error documents.  e.g. admin@your-domain.com
  144. #
  145. ServerAdmin you@example.com

  146. #
  147. # ServerName gives the name and port that the server uses to identify itself.
  148. # This can often be determined automatically, but we recommend you specify
  149. # it explicitly to prevent problems during startup.
  150. #
  151. # If your host doesn't have a registered DNS name, enter its IP address here.
  152. #
  153. ServerName www.example.com:80

  154. #
  155. # DocumentRoot: The directory out of which you will serve your
  156. # documents. By default, all requests are taken from this directory, but
  157. # symbolic links and aliases may be used to point to other locations.
  158. #
  159. DocumentRoot "/"

  160. #
  161. # Each directory to which Apache has access can be configured with respect
  162. # to which services and features are allowed and/or disabled in that
  163. # directory (and its subdirectories).
  164. #
  165. # First, we configure the "default" to be a very restrictive set of
  166. # features.  
  167. #

  168. #
  169. # Note that from this point forward you must specifically allow
  170. # particular features to be enabled - so if something's not working as
  171. # you might expect, make sure that you have specifically enabled it
  172. # below.
  173. #

  174. #
  175. # This should be changed to whatever you set DocumentRoot to.
  176. #
  177. <Directory "/">
  178.     #
  179.     # Possible values for the Options directive are "None", "All",
  180.     # or any combination of:
  181.     #   Indexes Includes FollowSymLinks SymLinksifOwnerMatch ExecCGI MultiViews
  182.     #
  183.     # Note that "MultiViews" must be named *explicitly* --- "Options All"
  184.     # doesn't give it to you.
  185.     #
  186.     # The Options directive is both complicated and important.  Please see
  187.     # http://httpd.apache.org/docs/2.2/mod/core.html#options
  188.     # for more information.
  189.     #
  190.     Options FollowSymLinks

  191.     #
  192.     # AllowOverride controls what directives may be placed in .htaccess files.
  193.     # It can be "All", "None", or any combination of the keywords:
  194.     #   Options FileInfo AuthConfig Limit
  195.     #
  196.     AllowOverride None

  197.     #
  198.     # Controls who can get stuff from this server.
  199.     #
  200.     Order allow,deny
  201.     Allow from all

  202. </Directory>

  203. #
  204. # DirectoryIndex: sets the file that Apache will serve if a directory
  205. # is requested.
  206. #
  207. <IfModule dir_module>
  208.     DirectoryIndex index.html index.htm index.php
  209. </IfModule>

  210. #
  211. # The following lines prevent .htaccess and .htpasswd files from being
  212. # viewed by Web clients.
  213. #
  214. <FilesMatch "^\.ht">
  215.     Order allow,deny
  216.     Deny from all
  217.     Satisfy All
  218. </FilesMatch>

  219. #
  220. # ErrorLog: The location of the error log file.
  221. # If you do not specify an ErrorLog directive within a <VirtualHost>
  222. # container, error messages relating to that virtual host will be
  223. # logged here.  If you *do* define an error logfile for a <VirtualHost>
  224. # container, that host's errors will be logged there and not here.
  225. #
  226. ErrorLog "logs/error_log"

  227. #
  228. # LogLevel: Control the number of messages logged to the error_log.
  229. # Possible values include: debug, info, notice, warn, error, crit,
  230. # alert, emerg.
  231. #
  232. LogLevel warn

  233. <IfModule log_config_module>
  234.     #
  235.     # The following directives define some format nicknames for use with
  236.     # a CustomLog directive (see below).
  237.     #
  238.     LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined
  239.     LogFormat "%h %l %u %t \"%r\" %>s %b" common

  240.     <IfModule logio_module>
  241.       # You need to enable mod_logio.c to use %I and %O
  242.       LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\" %I %O" combinedio
  243.     </IfModule>

  244.     #
  245.     # The location and format of the access logfile (Common Logfile Format).
  246.     # If you do not define any access logfiles within a <VirtualHost>
  247.     # container, they will be logged here.  Contrariwise, if you *do*
  248.     # define per-<VirtualHost> access logfiles, transactions will be
  249.     # logged therein and *not* in this file.
  250.     #
  251.     CustomLog "logs/access_log" common

  252.     #
  253.     # If you prefer a logfile with access, agent, and referer information
  254.     # (Combined Logfile Format) you can use the following directive.
  255.     #
  256.     #CustomLog "logs/access_log" combined
  257. </IfModule>

  258. <IfModule alias_module>
  259.     #
  260.     # Redirect: Allows you to tell clients about documents that used to
  261.     # exist in your server's namespace, but do not anymore. The client
  262.     # will make a new request for the document at its new location.
  263.     # Example:
  264.     # Redirect permanent /foo http://www.example.com/bar

  265.     #
  266.     # Alias: Maps web paths into filesystem paths and is used to
  267.     # access content that does not live under the DocumentRoot.
  268.     # Example:
  269.     # Alias /webpath /full/filesystem/path
  270.     #
  271.     # If you include a trailing / on /webpath then the server will
  272.     # require it to be present in the URL.  You will also likely
  273.     # need to provide a <Directory> section to allow access to
  274.     # the filesystem path.

  275.     #
  276.     # ScriptAlias: This controls which directories contain server scripts.
  277.     # ScriptAliases are essentially the same as Aliases, except that
  278.     # documents in the target directory are treated as applications and
  279.     # run by the server when requested rather than as documents sent to the
  280.     # client.  The same rules about trailing "/" apply to ScriptAlias
  281.     # directives as to Alias.
  282.     #
  283.     ScriptAlias /cgi-bin/ "/alidata/server/httpd/cgi-bin/"

  284. </IfModule>

  285. <IfModule cgid_module>
  286.     #
  287.     # ScriptSock: On threaded servers, designate the path to the UNIX
  288.     # socket used to communicate with the CGI daemon of mod_cgid.
  289.     #
  290.     #Scriptsock logs/cgisock
  291. </IfModule>

  292. #
  293. # "/alidata/server/httpd/cgi-bin" should be changed to whatever your ScriptAliased
  294. # CGI directory exists, if you have that configured.
  295. #
  296. <Directory "/alidata/server/httpd/cgi-bin">
  297.     AllowOverride None
  298.     Options None
  299.     Order allow,deny
  300.     Allow from all
  301. </Directory>

  302. #
  303. # DefaultType: the default MIME type the server will use for a document
  304. # if it cannot otherwise determine one, such as from filename extensions.
  305. # If your server contains mostly text or HTML documents, "text/plain" is
  306. # a good value.  If most of your content is binary, such as applications
  307. # or images, you may want to use "application/octet-stream" instead to
  308. # keep browsers from trying to display binary files as though they are
  309. # text.
  310. #
  311. DefaultType text/plain

  312. <IfModule mime_module>
  313.     #
  314.     # TypesConfig points to the file containing the list of mappings from
  315.     # filename extension to MIME-type.
  316.     #
  317.     TypesConfig conf/mime.types

  318.     #
  319.     # AddType allows you to add to or override the MIME configuration
  320.     # file specified in TypesConfig for specific file types.
  321.     #
  322.     #AddType application/x-gzip .tgz
  323.     #
  324.     # AddEncoding allows you to have certain browsers uncompress
  325.     # information on the fly. Note: Not all browsers support this.
  326.     #
  327.     #AddEncoding x-compress .Z
  328.     #AddEncoding x-gzip .gz .tgz
  329.     #
  330.     # If the AddEncoding directives above are commented-out, then you
  331.     # probably should define those extensions to indicate media types:
  332.     #
  333.     AddType application/x-compress .Z
  334.     AddType application/x-gzip .gz .tgz

  335.     #
  336.     # AddHandler allows you to map certain file extensions to "handlers":
  337.     # actions unrelated to filetype. These can be either built into the server
  338.     # or added with the Action directive (see below)
  339.     #
  340.     # To use CGI scripts outside of ScriptAliased directories:
  341.     # (You will also need to add "ExecCGI" to the "Options" directive.)
  342.     #
  343.     #AddHandler cgi-script .cgi

  344.     # For type maps (negotiated resources):
  345.     #AddHandler type-map var

  346.     #
  347.     # Filters allow you to process content before it is sent to the client.
  348.     #
  349.     # To parse .shtml files for server-side includes (SSI):
  350.     # (You will also need to add "Includes" to the "Options" directive.)
  351.     #
  352.     #AddType text/html .shtml
  353.     #AddOutputFilter INCLUDES .shtml
  354. </IfModule>

  355. #
  356. # The mod_mime_magic module allows the server to use various hints from the
  357. # contents of the file itself to determine its type.  The MIMEMagicFile
  358. # directive tells the module where the hint definitions are located.
  359. #
  360. #MIMEMagicFile conf/magic

  361. #
  362. # Customizable error responses come in three flavors:
  363. # 1) plain text 2) local redirects 3) external redirects
  364. #
  365. # Some examples:
  366. #ErrorDocument 500 "The server made a boo boo."
  367. #ErrorDocument 404 /missing.html
  368. #ErrorDocument 404 "/cgi-bin/missing_handler.pl"
  369. #ErrorDocument 402 http://www.example.com/subscription_info.html
  370. #

  371. #
  372. # MaxRanges: Maximum number of Ranges in a request before
  373. # returning the entire resource, or one of the special
  374. # values 'default', 'none' or 'unlimited'.
  375. # Default setting is to accept 200 Ranges.
  376. #MaxRanges unlimited

  377. #
  378. # EnableMMAP and EnableSendfile: On systems that support it,
  379. # memory-mapping or the sendfile syscall is used to deliver
  380. # files.  This usually improves server performance, but must
  381. # be turned off when serving from networked-mounted
  382. # filesystems or if support for these functions is otherwise
  383. # broken on your system.
  384. #
  385. #EnableMMAP off
  386. #EnableSendfile off

  387. # Supplemental configuration
  388. #
  389. # The configuration files in the conf/extra/ directory can be
  390. # included to add extra features or to modify the default configuration of
  391. # the server, or you may simply copy their contents here and change as
  392. # necessary.

  393. # Server-pool management (MPM specific)
  394. Include conf/extra/httpd-mpm.conf

  395. # Multi-language error messages
  396. #Include conf/extra/httpd-multilang-errordoc.conf

  397. # Fancy directory listings
  398. #Include conf/extra/httpd-autoindex.conf

  399. # Language settings
  400. #Include conf/extra/httpd-languages.conf

  401. # User home directories
  402. #Include conf/extra/httpd-userdir.conf

  403. # Real-time info on requests and configuration
  404. #Include conf/extra/httpd-info.conf

  405. # Virtual hosts
  406. Include conf/extra/httpd-vhosts.conf

  407. # Local access to the Apache HTTP Server Manual
  408. #Include conf/extra/httpd-manual.conf

  409. # Distributed authoring and versioning (WebDAV)
  410. #Include conf/extra/httpd-dav.conf

  411. # Various default settings
  412. #Include conf/extra/httpd-default.conf

  413. # Secure (SSL/TLS) connections
  414. #Include conf/extra/httpd-ssl.conf
  415. #
  416. # Note: The following must must be present to support
  417. #       starting without SSL on platforms with no /dev/random equivalent
  418. #       but a statically compiled-in mod_ssl.
  419. #
  420. <IfModule ssl_module>
  421. SSLRandomSeed startup builtin
  422. SSLRandomSeed connect builtin
  423. </IfModule>
  424. <IfModule mod_deflate.c>
  425. # 压缩等级 9
  426. DeflateCompressionLevel 9
  427. # 压缩类型 html、xml、php、css、js
  428. SetOutputFilter DEFLATE
  429. AddOutputFilterByType DEFLATE text/html text/plain text/xml application/x-javascript application/x-httpd-php
  430. AddOutputFilter DEFLATE js css
  431. </IfModule>
  432. HostnameLookups off
  433. AddType application/x-httpd-php .php
  434. #Begin SafeDogSite-ApacheFilter edits - remove only on uninstall
  435. Include "/etc/ApacheSafeDog/SafeDogSiteApacheFilter.Conf"
复制代码

论坛徽章:
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ChinaUnix元老
日期:2015-02-02 08:55:39CU十四周年纪念徽章
日期:2019-08-20 08:30:3720周年集字徽章-周	
日期:2020-10-28 14:13:3020周年集字徽章-20	
日期:2020-10-28 14:04:3019周年集字徽章-CU
日期:2019-09-08 23:26:2519周年集字徽章-19
日期:2019-08-27 13:31:262016科比退役纪念章
日期:2022-04-24 14:33:24
发表于 2015-07-03 13:00 |显示全部楼层
看看apache的日志里面有没有 server reached MaxClients setting 这样的关键字

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2015年迎新春徽章
日期:2015-03-04 09:55:28
发表于 2015-07-03 13:39 |显示全部楼层
回复 8# Shell_HAT


    是有这个error,是并发数到上限了吗?需要再调高MaxClients?

论坛徽章:
33
ChinaUnix元老
日期:2015-02-02 08:55:39CU十四周年纪念徽章
日期:2019-08-20 08:30:3720周年集字徽章-周	
日期:2020-10-28 14:13:3020周年集字徽章-20	
日期:2020-10-28 14:04:3019周年集字徽章-CU
日期:2019-09-08 23:26:2519周年集字徽章-19
日期:2019-08-27 13:31:262016科比退役纪念章
日期:2022-04-24 14:33:24
发表于 2015-07-03 14:34 |显示全部楼层
回复 9# xinglu1983


可以先看看是不是DDOS。
如果真的是网站并发用户数太高,ServerLimit和MaxClients都要增加,前提是CPU、内存等硬件资源足够。
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