The Apache mod_status module is something that can be very useful when troubleshooting high CPU or Memory usage with Apache.<\/p>\n
Taken it directly from the Apache documentation:<\/p>\n
– The number of worker serving requests.
\n– The number of idle worker.
\n– The status of each worker, the number of requests that worker has performed and the total number of bytes served by the worker.
\n– A total number of accesses and byte count served.
\n– The time the server was started\/restarted and the time it has been running for.
\n– Averages giving the number of requests per second, the number of bytes served per second and the average number of bytes per request.
\n– The current percentage CPU used by each worker and in total by all workers combined.
\n– The current hosts and requests being processed.<\/p>\n
Setting it up is simple. <\/p>\n
\n\n# CentOS 6 \/ CentOS 7\n[root@web01 ~]# vim \/etc\/httpd\/conf.d\/status.conf\n\n<\/pre>\n\n\n# Ubuntu 12.04\n[root@web01 ~]# vim \/etc\/apache2\/conf.d\/status.conf\n<\/pre>\n\n# Ubuntu 14.04\n[root@web01 ~]# vim \/etc\/apache2\/conf-available\/status.conf\n\n<\/pre>\nUsing the correct location for your distro use the following configuration to enable mod_status. Update the AuthUserFile line accordingly for your distro:<\/p>\n
\n\n<IfModule mod_status.c>\n#\n# ExtendedStatus controls whether Apache will generate "full" status\n# information (ExtendedStatus On) or just basic information (ExtendedStatus\n# Off) when the "server-status" handler is called. The default is Off.\n#\nExtendedStatus On\n\n# Allow server status reports generated by mod_status,\n# with the URL of http:\/\/servername\/server-status\n# Uncomment and change the ".example.com" to allow\n# access from other hosts.\n#\n<Location \/server-status>\n SetHandler server-status\n Order deny,allow\n Deny from all\n Allow from localhost ip6-localhost\n <IfModule mod_rewrite.c>\n RewriteEngine off\n <\/IfModule>\n Allow from 127.0.0.1\n\n# On CentOS \/ RedHat systems, uncomment the following line\n AuthUserFile \/etc\/httpd\/status-htpasswd\n\n# On Debian \/ Ubuntu systems, uncomment the following line\n# AuthUserFile \/etc\/apache2\/status-htpasswd\n\n AuthName "Password protected"\n AuthType Basic\n Require valid-user\n\n # Allow password-less access for allowed IPs\n Satisfy any\n<\/Location>\n\n<\/IfModule>\n\n<\/pre>\nOnce you have the configuration in place, you can secure it with a username and password:<\/p>\n
\n\n# CentOS 6 \/ CentOS 7\n[root@web01 ~]# htpasswd -c \/etc\/httpd\/status-htpasswd serverinfo\n[root@web01 ~]# service httpd restart\n\n<\/pre>\n\n\n\n\n# Ubuntu 12.04\n[root@web01 ~]# htpasswd -c \/etc\/apache2\/status-htpasswd serverinfo\n[root@web01 ~]# service apache2 restart\n\n<\/pre>\n\n\n\n# Ubuntu 14.04\n[root@web01 ~]# htpasswd -c \/etc\/apache2\/status-htpasswd serverinfo\n[root@web01 ~]# a2enconf status.conf\n[root@web01 ~]# service apache2 restart\n\n<\/pre>\nNow go to:<\/p>\n
\n\nhttp:\/\/serverip\/server-status\n\n<\/pre>\nYou can have the \/server-status page refresh automatically by using the following in the URL:<\/p>\n
\n\nhttp:\/\/serverip\/server-status?refresh=2\n\n<\/pre>\nIt may give you some idea of what client, or what types of requests, are causing the resource contention issues. Usually it is a specific web application misbehaving, or a specific client is attacking a site.<\/p>\n","protected":false},"excerpt":{"rendered":"
The Apache mod_status module is something that can be very useful when troubleshooting high CPU or Memory usage with Apache. Taken it directly from the Apache documentation: – The number of worker serving requests. – The number of idle worker. – The status of each worker, the number of requests that worker has performed and … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-3673","post","type-post","status-publish","format-standard","hentry","category-apache"],"_links":{"self":[{"href":"https:\/\/www.qbytes.cloud\/index.php\/wp-json\/wp\/v2\/posts\/3673","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.qbytes.cloud\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.qbytes.cloud\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.qbytes.cloud\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.qbytes.cloud\/index.php\/wp-json\/wp\/v2\/comments?post=3673"}],"version-history":[{"count":0,"href":"https:\/\/www.qbytes.cloud\/index.php\/wp-json\/wp\/v2\/posts\/3673\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.qbytes.cloud\/index.php\/wp-json\/wp\/v2\/media?parent=3673"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.qbytes.cloud\/index.php\/wp-json\/wp\/v2\/categories?post=3673"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.qbytes.cloud\/index.php\/wp-json\/wp\/v2\/tags?post=3673"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}