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Andreas Braun
af69e37e7b
- Enhancement of breadcrumbs to include Tree information in Ajax response. - Removing all double quotes from 'include' files for performance. - Some cleanups in cdef.php - Enhancement of 'Send Test Email' to use Dialog jQuery plugin - Fixed (finally) the last remaining issues with re-sizable columns - Some CSS cleanup - Fix main tabs not highlighting - Add consistent help screens to CLI and pollers relative to versions and copyright years (now a constant) git-svn-id: svn+ssh://repo.cacti.net/var/data/svnroot/cacti/cacti/branches/0.8.8@7551 860744bd-22fc-0310-8c96-e9fe5004b5ca
364 lines
14 KiB
Plaintext
364 lines
14 KiB
Plaintext
/*******************************************************************************
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Author ......... Larry Adams
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Contact ........ larryjadams@comcast.net
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Home Site ...... http://www.cacti.net
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Program ........ Cacti Performance Booster
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Version ........ 4.2
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Purpose ........ Large Site Performance Booster for Cacti
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*******************************************************************************/
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----[ Purpose
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This plugin boost's Cacti performance especially for Large Sites. It does
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this by introducing three new features to Cacti.
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First, it caches recently viewed images to a public Cache folder for all
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users to share.
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Second, it introduces an "on demand" RRD update feaure to Cacti. This
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feature will only update the RRD files when there is demand on the system
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to view a graph. The RRD's will be updated just before the Graph is rendered
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by the web server. Then, on a predetermined schedule, it conducts a batch
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update's of all remaining RRD's.
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Lastly, it introduces an RRD update service to Cacti. This service allows
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you to add multiple Cacti servers to your web farm allowing all the servers
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to participate in the "on demand" RRD update and viewing process.
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----[ Features
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On Demand RRD Updates
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Timed and Mass RRD Updates by Number of Records
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RRD Update Service
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PNG Caching
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----[ Prerequisites
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Before you install Boost, you need to have met the following pre-requisites:
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1) Cacti 0.8.7 and above.
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2) Cacti Plugin Architecture v2.x
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3) MySQL 5.0 or above. Versions of MySQL less than 5.0 are not supported.
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4) Have quite a bit of system memory available to hold your memory resident
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database and/or your sql results during major rrd update cycles.
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Before enabling boost, please consider very carefully how you plan to use it
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long term. Carefull thought should be given to how often you update RRD's
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at what point you need to either increase your MySQL max heap table size,
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or increase your update frequency. You should also consider carefully how
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much memory to allocate to PHP when retrieving records during major updates.
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If you are unsure of what I am talking about, you should not use Boost!!!
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----[ Installation
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Install is similar to other plugins with the following notes:
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0) Check permissions, the tar file was made on Windows. My next PC will
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be Linux. :)
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1) You must first choose your RRD update cache database format. There are
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two options:
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- Memory Resident (MySQL 5.x and Above)
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- MyISAM (All Supported MySQL Versions)
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The benefit of the Memory Resident impmenentation is that database
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exchanges will be very fast and will not delay the system. However,
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if your system is rebooted between major update cycles, you can loose
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some graph data.
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The MyISAM version will increase MySQL load during polling, but does
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store the information in a lossless (well almost anyway) format.
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IMPORTANT: If you plan on using a memory resident database format,
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make sure you set the mysql environment variable "max_heap_table_size"
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large enough to accomodate all of your records, else, you will loose
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data. This environment must go into either your my.cnf or my.ini file.
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To install either format, you must follow the instructions below:
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mysql -u <user> -p cacti < "my_chosen_format.sql"
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Options here are as follows:
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boost_sql_memory.sql, boost_sql_myisam.sql
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NOTE: You may skip this step. If you do, the tables will be initialized
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as memory tables.
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Note: if you choose the memory table option, you may want to limit the
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size of the output field to your maximum output length from all polled
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items as MySQL varchar(512) take 512 bytes of memory even if your output
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is simply a 'U'.
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2) Once you have the SQL in place, you must enable you plugin by going to
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the Plugin Management interface and installing and enabling the plugin.
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Please note, that if you are running a prior version of Boost, it might
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be a good idea to clear out the boost cache before doing any of this.
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3) Then, you must decide on a directory to hold your image cache, and verify
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permissions both their and in the rra directory. If you are not using
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the boost server, the web server account will need R/W into both directories
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and be able to create files in those directories as well.
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4) Next you have to enable any of the three features mentioned. You can
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do this by going to your Cacti website, logging in as an adminnistrator
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and going to the Settings->Boost tab.
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6) If your Web server is not going to have access to create/update RRD
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files, you must start the "boost_server.php" file as a service either
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as an init.d service, or more reliably as an inittab service.
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NOTE: The Inittab Process has the benefit of being able to restart the
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boost server if it crashes and therefore is preferred.
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In the UNIX/LINUX environment, to use the init.d process, use a script
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attached cacti_rrdsvc script and follow the instructions below.
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------------------------------------------------------------------------
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Init.d Process:
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------------------------------------------------------------------------
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a) Place the cacti_rrdsvc in the /etc/init.d folder.
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b) Edit cacti_rrdsvc and modify the variable PROGPATH to poing to the
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location of boost_server.php, and the DEBUBLOG entry.
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c) Edit both boost_server.php and boost_rrdupdate.php and verify the PHP path
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in the first line of the file.
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d) Mark the boost_server.php and boost_rrdupdate.php files as executable:
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chmod +x boost_server.php
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chmod +x boost_rrdupdate.php
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e) If using an id other than root to update the rrdfiles mark the boost_server.php
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and boost_rrdupdate.php files setiud:
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chown root:root boost_server.php
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chmod +s boost_server.php
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chown root:root boost_rrdupdate.php
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chmod +s boost_rrdupdate.php
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f) Edit the boost_server.php and make sure the embedded path to PHP is
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correct.
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g) Run the following commands.
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On Most Linux Variants:
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dos2unix cacti_rrdsvc (sorry, I'm still writing in Windows)
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chkconfig --add cacti_rrdsvc
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chkconfig cacti_rrdsvc on
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h) Then either:
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service cacti_rrdsvc start [debug]
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or:
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/etc/init.d/cacti_rrdsvc start [debug]
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The "debug" option is optional
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i) Make sure it's running by issuing the following command:
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ps -ef | grep cacti_rrdsvc
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------------------------------------------------------------------------
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Inittab Process:
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------------------------------------------------------------------------
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NOTE: this process varies by Operating system. For this example, we will
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assume a Linux install. On Windows, you should create a service. I will
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not be covering how to do that here.
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a) Edit /etc/inittab and Place a new entry in the file as such:
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# Cacti Boost Server
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bsts:345:respawn:/var/www/html/cacti/plugins/boost/boost_server.php
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You may replace bsts with the unique ID of your choice.
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b) Edit both boost_server.php and boost_rrdupdate.php and verify the PHP path
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in the first line of the file.
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c) Mark the boost_server.php and boost_rrdupdate.php files as executable:
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chmod +x boost_server.php
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chmod +x boost_rrdupdate.php
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d) If using an id other than root to update the rrdfiles mark the boost_server.php
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and boost_rrdupdate.php files setiud:
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chown root:root boost_server.php
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chmod +s boost_server.php
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chown root:root boost_rrdupdate.php
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chmod +s boost_rrdupdate.php
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e) Refresh/Reload the inittab using the following command:
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init q
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f) Make sure it's running by issuing the following command:
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ps -ef | grep boost_server.php
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7) Finally, you can poll the server using telnet. To do so, start a telnet
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session on the port you choose to use (default 9050) and type the
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"status" command followd by a carriage return. You should receive a
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favorable response.
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----[ Additional Help?
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If you need additional help, please goto forums.cacti.net.
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----[ Possible Bugs?
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If you figure out this problem, let me know!!!
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----[ Special Thanks
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Ernest Wilson (N3NCY) - For allowing me to break and then fix his
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system repeatedly perfecting this Plugin.
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Jimmy Connor (cigamit) - For bringing the plugin architecture to
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the world of Cacti and provding continual support of my development
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efforts.
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dononeil (dononeil) - For his help with the inittab process setup
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documentation for Linux.
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Boris Lytochkin (BorisL) - For his idea of using a lock file to detect
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process overruns correctly and inspiring me to complete Boost 2.0.
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----[ Future Changes
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Got any ideas or complaints, please e-mail me!
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----[ Changelog
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--- SVN ---
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bug: Correct misspelling
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feature: Set the permissions on the Cache files so that they can be managed by the poller
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feature#0001853: Boost v4.2 does not check graph size before pushing cached image
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--- 4.2 ---
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compat: Don't override Cacti log level
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bug: eliminate harmless temporary table errors
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bug: when disabled, this plugin should not run
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bug: warn if you are attempting to use boost redirect and spine isn't in use
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--- 4.1 ---
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bug: Major issue with BTREE PRIMARY KEYS and MEMORY TABLES in MySQL causing gaps
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feature: When boost redirect is not in use, do not update to the second to prevent graph breakage
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--- 4.0 ---
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feature: Add support for Cacti's new rrdtool segfault detection
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bug: Setting logging to MEDIUM and higher causes boost images to break
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--- 3.1 ---
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bug: Boost poller statistics logging missing global variable declaration
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bug#0001643: When boost 3.0 plugin is installed and then uninstalled it doesn't cleans database entries properly.
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bug#0001555: Boost errors generated in log when another user has graphs open
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feature: Allow boost to recover from rrdtool crashes
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compat: Make the error handler not require PHP 5.2
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compat: Remove PIA 1.x support
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--- 3.0 ---
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feature: Deep performance tuning and code cleanup
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feature: Add logging to boost updates for performance tuning
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feature: Add hooks to support 95th Percentile and Bandwidth Summation
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--- 2.6 ---
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bug: Initial RRDfile update taks two boost cycles and not one
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bug: Cacti RRDtool fetch command bypasses boost causing issues
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bug: Don't optimize boost table if it's in MEMORY storage engine
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--- 2.5 ---
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feature: Integration with DSStats
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feature: Support boost redirect for large systems
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feature: Properly support structured paths
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--- 2.4 ---
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bug: [Boost 2.3] Include line referring to thold plugin
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bug: Should be db_fetch_row and not db_fetch_cell
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feature: Allow specification of memory limits
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--- 2.3 ---
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feature: Better max memory reporting for older PHP installs
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feature: Reduce the load on the database server when displaying boost stats
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feature: Integrate better with tholds vrule display (image caching off)
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feature: Upgrade Automatically when either viewing the console or the plugin
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management page.
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--- 2.2 ---
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bug: If running the boost server, mysql can timeout causing 2006 errors
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bug: Typo relative to Linux Kernel versions in relative to command length
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bug: Logging did not work on all occasions due to an undefined variable error
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bug: Improve the counting algorythm to remove some bogus RRDtool update errors
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bug: Check the validity of Multivalue updates prior to allowing updates
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bug: Correct documentation relative to the the inittab process so that it works
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bug: Prevent more than one Boost Server from running at a time by validating
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Socket bind
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--- 2.1 ---
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bug: Correcting overrun issues
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bug: Rename maximum rows to maximum data sources
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bug: RRDupdate batch process was not working as designed causing excessive
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memory to be consumed in some cases
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feature: Log memory performance and make available via UI
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--- 2.0 ---
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bug: remove the base start time, it complicates things
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bug: make version, force, and debug options consistent
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bug: rrdupdates oftentimes caused gaps in graphs due to limit issues
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feature: add an rrdtool output logging option
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feature: support inittab for restarting the boost server
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feature: support process locking control methodology
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--- 1.8 ---
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bug: correct issue with multiple temporary tables using the same name are encountered
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bug: significant bug from 1.6 that prevents the poller_output_boost table from emptying
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completely
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--- 1.7 ---
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feature: Add Cacti 0.8.7 compatibility
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--- 1.6 ---
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feature: make the delete process a high performance one by batching the deletes
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bug: set a good memory limit and runtime in poller_boost.php
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--- 1.5 ---
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bug: Under some circumstanced the poller_boost.php could not be fored to run
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bug: Scripts that do not return the correct number of DS' did not update properly
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bug: New forcerun option introduced in version 1.3 was causing boost not disable properly
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when you unselected it from the user interface.
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--- 1.4 ---
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bug: Fixed an issue with data queries where the rrdupdate template was not formated correctly
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--- 1.3 ---
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bug: Fixed an issue where multi part responses with a "0" would return "U"
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feature: Added better logging functions to help in debugging
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feature: Allow you to increase the MySQL Insert string length to improve performance
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feature: Allow you to increase the RRDtool update string length to improve performance
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--- 1.2 ---
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bug: Added boost_server.php and poller_boost.php to the no session array
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bug: Made slight change to rrd-update functions to accomodate for abarant
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output in the poller_output_boost table. This would cause the boost
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plugin to loose data if improperly formatted data made it into the table.
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--- 1.1 ---
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bug: Fix issues with Multiprocess RRDupdating of RRD Files
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--- 1.0 ---
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Initial release
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--- Known Issues ---
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None reported
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