Troubleshoot Web Interface - Revision history

Wayne-workman.28155: /* High CPU load from web interface */

2017-12-16T14:15:55Z

‎High CPU load from web interface

Wayne-workman.28155 at 14:54, 27 October 2016

2016-10-27T14:54:13Z

Wayne-workman.28155: /* High CPU load from web interface */

2016-09-08T01:23:32Z

‎High CPU load from web interface

Wayne-workman.28155 at 22:21, 28 August 2016

2016-08-28T22:21:27Z

Wayne-workman.28155: /* Fatal error: Allowed memory size of xxxxxxxx bytes exhausted */

2016-06-15T19:42:16Z

‎Fatal error: Allowed memory size of xxxxxxxx bytes exhausted

Wayne-workman.28155: /* High CPU load from apache */

2016-04-27T03:04:10Z

‎High CPU load from apache

Wayne-workman.28155: /* High CPU load from apache */

2016-04-27T02:59:43Z

‎High CPU load from apache

Wayne-workman.28155: /* High CPU load from apache */

2016-04-27T02:55:05Z

‎High CPU load from apache

Wayne-workman.28155 at 02:53, 27 April 2016

2016-04-27T02:53:15Z

Wayne-workman.28155 at 03:31, 26 April 2016

2016-04-26T03:31:31Z

← Older revision		Revision as of 14:15, 16 December 2017
Line 60:		Line 60:

	Other tools to look into are <font color="red">iftop</font> ran with this command: <font color="red">iftop -n</font> and just plain-old <font color="red">top</font>		Other tools to look into are <font color="red">iftop</font> ran with this command: <font color="red">iftop -n</font> and just plain-old <font color="red">top</font>
		+
		+	See also DB Maintenance commands: [[Troubleshoot_MySQL#Database_Maintenance_Commands]]

	= High CPU load from apache =		= High CPU load from apache =

← Older revision		Revision as of 14:54, 27 October 2016
Line 36:		Line 36:

	After doing this, the target host will be sent a WOL packet from the FOG server.		After doing this, the target host will be sent a WOL packet from the FOG server.
		+
		+	= Manually check a host's iPXE script =
		+
		+	Below is the web address used to check a particular host's iPXE script that the fog server gives it when it's network booting. You would replace x.x.x.x with your fog server's IP address, and replace the MAC address with the host's actual mac address.
		+
		+	<pre>
		+	x.x.x.x/fog/service/ipxe/boot.php?mac=aa:bb:cc:dd:ee:ff
		+	</pre>

	= High CPU load from web interface =		= High CPU load from web interface =

@@ Line 49: / Line 49: @@
 <pre>apachetop</pre>
-apachetop is probably available for other distributions too.
+apachetop is available for other distributions too.
 = High CPU load from apache =

← Older revision		Revision as of 22:21, 28 August 2016
Line 1:		Line 1:
	Page under construction. Below you'll find notes that are being collected to make into an article.		Page under construction. Below you'll find notes that are being collected to make into an article.
		+
		+	= Apache Error Logs =
		+
		+	You can manually view the apache error logs by either using vim, cat, or tail. The most popular way is with tail so we will demonstrate that way. Often times, problems with the web interface will have associated errors in apache's log file. Researching this error normally leads you to the corrective action necessary - or at least provides you with an error you can post on the forums with your issue.
		+
		+	RHEL/CentOS/Fedora:
		+	<font color="red">tail -n 100 /var/log/httpd/error_log</font>
		+
		+	Debian/Ubuntu:
		+	<font color="red">tail -n 100 /var/log/apache2/error.log</font>
		+

	= Fatal error: Allowed memory size of xxxxxxxx bytes exhausted =		= Fatal error: Allowed memory size of xxxxxxxx bytes exhausted =

← Older revision		Revision as of 19:42, 15 June 2016
Line 9:		Line 9:

	It’s done in megs, so 128 = 128M, 256 = 256M etc…		It’s done in megs, so 128 = 128M, 256 = 256M etc…
		+
		+	After changing this, a reboot is recommended.

	= Manually test WOL =		= Manually test WOL =

← Older revision		Revision as of 03:04, 27 April 2016
Line 48:		Line 48:

	[https://forums.fogproject.org/topic/6277/not-sure-if-its-a-bug-or-a-feature-high-fog-server-cpu-on-dashboard/22 not-sure-if-its-a-bug-or-a-feature-high-fog-server-cpu-on-dashboard]		[https://forums.fogproject.org/topic/6277/not-sure-if-its-a-bug-or-a-feature-high-fog-server-cpu-on-dashboard/22 not-sure-if-its-a-bug-or-a-feature-high-fog-server-cpu-on-dashboard]
		+
		+	[https://forums.fogproject.org/topic/6901/high-cpu-usage-from-multiple-httpd-processes-version-5800?page=1 high-cpu-usage-from-multiple-httpd-processes-version-5800]

	[https://forums.fogproject.org/topic/6940/high-cpu-fog-services-after-update-r5029-v6759 high-cpu-fog-services-after-update-r5029-v6759]		[https://forums.fogproject.org/topic/6940/high-cpu-fog-services-after-update-r5029-v6759 high-cpu-fog-services-after-update-r5029-v6759]

@@ Line 49: / Line 49: @@
 [https://forums.fogproject.org/topic/6277/not-sure-if-its-a-bug-or-a-feature-high-fog-server-cpu-on-dashboard/22 not-sure-if-its-a-bug-or-a-feature-high-fog-server-cpu-on-dashboard]
-[https://forums.fogproject.org/topic/6901/high-cpu-usage-from-multiple-httpd-processes-version-5800?page=1 high-cpu-usage-from-multiple-httpd-processes-version-5800]
+[https://forums.fogproject.org/topic/6940/high-cpu-fog-services-after-update-r5029-v6759 high-cpu-fog-services-after-update-r5029-v6759]
 [https://forums.fogproject.org/topic/7234/after-update-of-fog-trunk-php-errors after-update-of-fog-trunk-php-errors]

@@ Line 43: / Line 43: @@
 Here are threads about high CPU load:
-[https://forums.fogproject.org/topic/6020/fog-svn-5020-and-above-cpu-hammered-thread/20?page=2]
+[https://forums.fogproject.org/topic/6020/fog-svn-5020-and-above-cpu-hammered-thread/20?page=2 fog-svn-5020-and-above-cpu-hammered-thread]
-[https://forums.fogproject.org/topic/6469/tons-of-httpd-processes]
+[https://forums.fogproject.org/topic/6469/tons-of-httpd-processes tons-of-httpd-processes]
-[https://forums.fogproject.org/topic/6277/not-sure-if-its-a-bug-or-a-feature-high-fog-server-cpu-on-dashboard/22]
+[https://forums.fogproject.org/topic/6277/not-sure-if-its-a-bug-or-a-feature-high-fog-server-cpu-on-dashboard/22 not-sure-if-its-a-bug-or-a-feature-high-fog-server-cpu-on-dashboard]
-[https://forums.fogproject.org/topic/6901/high-cpu-usage-from-multiple-httpd-processes-version-5800?page=1]
+[https://forums.fogproject.org/topic/6901/high-cpu-usage-from-multiple-httpd-processes-version-5800?page=1 high-cpu-usage-from-multiple-httpd-processes-version-5800]
-[https://forums.fogproject.org/topic/7234/after-update-of-fog-trunk-php-errors]
+[https://forums.fogproject.org/topic/7234/after-update-of-fog-trunk-php-errors after-update-of-fog-trunk-php-errors]
-[https://forums.fogproject.org/topic/7215/high-cpu-php-errors-after-update-to-trunk-github-7234]
+[https://forums.fogproject.org/topic/7215/high-cpu-php-errors-after-update-to-trunk-github-7234 high-cpu-php-errors-after-update-to-trunk-github-7234]
-[https://forums.fogproject.org/topic/4929/fog-3396-high-cpu-utilization-when-auto-update-is-running-on-the-active-tasks-page]
+[https://forums.fogproject.org/topic/4929/fog-3396-high-cpu-utilization-when-auto-update-is-running-on-the-active-tasks-page fog-3396-high-cpu-utilization-when-auto-update-is-running-on-the-active-tasks-page]

← Older revision		Revision as of 02:53, 27 April 2016
Line 37:		Line 37:

	apachetop is probably available for other distributions too.		apachetop is probably available for other distributions too.
		+
		+
		+	= High CPU load from apache =
		+
		+	Here are threads about high CPU load:
		+
		+	[https://forums.fogproject.org/topic/6020/fog-svn-5020-and-above-cpu-hammered-thread/20?page=2]
		+
		+	[https://forums.fogproject.org/topic/6469/tons-of-httpd-processes]
		+
		+	[https://forums.fogproject.org/topic/6277/not-sure-if-its-a-bug-or-a-feature-high-fog-server-cpu-on-dashboard/22]
		+
		+	[https://forums.fogproject.org/topic/6901/high-cpu-usage-from-multiple-httpd-processes-version-5800?page=1]
		+
		+	[https://forums.fogproject.org/topic/7234/after-update-of-fog-trunk-php-errors]
		+
		+	[https://forums.fogproject.org/topic/7215/high-cpu-php-errors-after-update-to-trunk-github-7234]
		+
		+	[https://forums.fogproject.org/topic/4929/fog-3396-high-cpu-utilization-when-auto-update-is-running-on-the-active-tasks-page]

← Older revision		Revision as of 03:31, 26 April 2016
Line 23:		Line 23:

	After doing this, the target host will be sent a WOL packet from the FOG server.		After doing this, the target host will be sent a WOL packet from the FOG server.
		+
		+	= High CPU load from web interface =
		+
		+	There is a tool called apachetop that will list the amount of requests every file served by Apache receives, along with the total amount of data sent via that file. This tool will prove invaluable in solving web load issues.
		+
		+	To install apachetop on Fedora 23:
		+
		+	<pre>dnf install apachetop -y</pre>
		+
		+	Then to run it, simply type:
		+
		+	<pre>apachetop</pre>
		+
		+	apachetop is probably available for other distributions too.