Posts Tagged ‘little bit’

WordPress Plugins to monitor and debug WP enabled plugins – Find Errors / Warnings and Remove WP problematic plugins slowing down your Website (blog) database

Thursday, February 19th, 2015

plugins-to-monitor-debug-wordpress-enabled-plugins-how-to-track-find-errors-and-warnings-and-remove-problematic-wp-extensions-that-slow-down-your-website

Recent days, I'm spending a lot of time again trying to optimize my wordpress blog. Optimizing WP for better efficiency is becoming harder and harder task day by day as the website file content data is growing along with SQL databases. Moreover situation gets even worse because the number of plugins enabled on my blog is incrementally growing with time because, there is more and more goodies I'd like to add.
Optimizing WordPress to run for Speed on a server is a whole a lot of art and its a small universe in itself, because as of time of writting this post the count (number) of WordPress available PLUGINS is 36,197 ! 

1. Manually Tracking WordPress  Plugins causing Slow SQL Queries (MySQL bottleneck) issues directly using console / SSH

Because of its open source development and its nice modular design wordpress has turned into a standard for building small, middle sized and large websites (some WordPress based blogs and sites have from 50 000 to 100 000 unique pages!). My blog is still a small WordPress site with only 1676 posts, so I still haven't reached the high volume traffic optimization requirements but still even though I have a relatively good server hardware  8GB RAM / (2×2.70 Ghz Intel CPU) / 500 GB (7400 RPM HDD) at times I see Apache Webservers is unable to properly serve coming requests because of MySQL database (LEFT JOIN) requests being slow to serve (taking up to few seconds to complete) and creating a MySQL table lock, putting all the rest SQL queries to stay in a long unserved queues line, I've realized about this performance issue by using a a mysql cli (command) client and few commands and console command (tool) called mytop (also known as mtop). MyTop refreshes every 3 seconds, so the slow query will immediately stay on screen to view moer info about it press "f" and type the  in query ID.

mysql-top-running-on-gnu-linux-server-tracking-sql-queries-in-console-screenshot.png

mysql-top-running-on-gnu-linux-server-tracking-sql-queries-in-console-screenshot2

Finally it is very useful to run  for a while MySQL server logging to /var/log/mysql/slow-query.log:
Slow query is enabled (on my Debian 7 Wheezy host) by adding to /etc/mysql/my.cnf
after conf section

 

vim /etc/mysql/my.cnf
#
# * Logging and Replication
#
# Both location gets rotated by the cronjob.
# Be aware that this log type is a performance killer.
# As of 5.1 you can enable the log at runtime!
#general_log_file        = /var/log/mysql/mysql.log
#general_log             = 1
#
# Error logging goes to syslog due to /etc/mysql/conf.d/mysqld_safe_syslog.cnf.
#
# Here you can see queries with especially long duration

 

Paste:

 

slow_query_log = 1
slow_query_log_file = /var/log/mysql/slow-query.log
long_query_time = 2
log-queries-not-using-indexes

 

And then to make new mysql configuration load restarted mysql server:

 

debian-server:~# /etc/init.d/mysql restart
Stopping MySQL database server: mysqld.
Starting MySQL database server: mysqld ..
Checking for tables which need an upgrade, are corrupt or were
not closed cleanly..

 

Leaving mysql-slow.log to be enabled for 30 minutes to an 1 hrs is a good time to track most problematic slow queries and based on this queries, I took parts of  SQL UPDATE / SELECT / INSERT etc. Db queries which was problematic and grepped throughout /var/www/blog/wp-content/plugin files in order to determine which WordPress Plugin is triggering the slow query, causing blog to hang when too many clients try to see it in browser.

My main problematic SQL query having long execution time  (about 2 to 3 seconds!!!) most commonly occuring in slow-query.log was:

 

SELECT DISTINCT post_title, ID, post_type, post_name FROM wp_posts wposts LEFT JOIN wp_postmeta wpostmeta ON wposts.ID = wpostmeta.post_id LEFT JOIN wp_term_relationships ON (wposts.ID = wp_term_relationships.object_id) LEFT JOIN wp_term_taxonomy ON (wp_term_relationships.term_taxonomy_id = wp_term_taxonomy.term_taxonomy_id) WHERE (post_type='page' OR (wp_term_taxonomy.taxonomy = 'category' AND wp_term_taxonomy.term_id IN(11))) AND post_status = 'publish' AND LENGTH(post_title)>=5 ORDER BY LENGTH(post_title) ASC LIMIT 500

Because above query uses SQL Column names and Tables which are not hard coded in PHP code, to find out which plugins is most probably to launch this complex LEFT JOIN query, I used a quick bash one-liner:

 

# cd /var/www/blog/wp-content/plugins

 

# for i in $(grep -rli 'SELECT DISTINCT' *); do grep -rli 'LEFT JOIN' $i; done 
./seo-automatic-links/seo-links.php
./wp-postviews/wp-postviews.php
./yet-another-related-posts-plugin/classes/YARPP_Cache_Tables.php

 

I wanted to put less load on CPU during grep so looked for string only in .PHP extensioned files with:

 

 # for i in $(find . -iname '*.php' -exec grep -rli 'SELECT DISTINCT' '{}' \;); do grep -rli 'LEFT JOIN' $i; done
./seo-automatic-links/seo-links.php
./wp-postviews/wp-postviews.php
./yet-another-related-posts-plugin/classes/YARPP_Cache_Tables.php


As you can see the complex query is being called from PHP file belonging to one of 3 plugins

  • SEO Automatic Links – this is SEO Smart Links WP plugin (Does internal bliog interlinking in order to boast SEA)
  • WP PostViews – WordPress Post Views plugin (Which allows me to show how many times an article was read in WP Widget menu)
  • Yet Another Related Posts – Which is WP plugin I installed / enabled to show Related posts down on each blog post


2. Basic way to optimize MySQL slow queries (EXPLAIN / SHOW CREATE TABLE)

Now as I have a basic clue on plugins locking my Database, I disabled them one by one while keeping enabled mysql slow query log and viewing queries in mytop and I figure out that actually all of the plugins were causing a short time overheat (lock) on server Database because of LEFT JOINs. Though I really like what this plugins are doing, as they boast SEO and attract prefer to disable them for now and have my blog all the time responsible light fast instead of having a little bit better Search Engine Optimization (Ranking) and loosing many of my visitors because they're annoyed to wait until my articles open

Before disabling I tried to optimize the queries using MySQL EXPLAIN command + SHOW CREATE TABLE (2 commands often used to debug slow SQL queries and find out whether a Column needs to have added INDEX-ing to boast MySQL query).

Just in case if you decide to give them a try here is example on how they're used to debug problematic SQL query:
 

  1. mysql> explain SELECT DISTINCT post_title, ID, post_type, post_name
  2.     -> FROM wp_posts wposts LEFT JOIN wp_postmeta wpostmeta
  3.     -> ON wposts.ID = wpostmeta.post_id LEFT JOIN wp_term_relationships
  4.     -> ON (wposts.ID = wp_term_relationships.object_id) LEFT JOIN wp_term_taxonomy
  5.     -> ON (wp_term_relationships.term_taxonomy_id = wp_term_taxonomy.term_taxonomy_id)
  6.     -> WHERE (post_type='page'
  7.     -> OR (wp_term_taxonomy.taxonomy = 'category'
  8.     -> AND wp_term_taxonomy.term_id IN(11,15,17)))
  9.     -> AND post_status = 'publish'
  10.     -> AND LENGTH(post_title)>=5
  11.     -> ORDER BY LENGTH(post_title) ASC
  12.     -> LIMIT 500;
  13. +—-+————-+———————–+——–+——————+———+———+———————————————+——+———————————————-+
  14. | id | select_type | table                 | type   | possible_keys    | key     | key_len | ref                                         | rows | Extra                                        |
  15. +—-+————-+———————–+——–+——————+———+———+———————————————+——+———————————————-+
  16. |  1 | SIMPLE      | wposts                | ALL    | type_status_date | NULL    | NULL    | NULL                                        | 1715 | Using where; Using temporary; Using filesort |
  17. |  1 | SIMPLE      | wpostmeta             | ref    | post_id          | post_id | 8       | blog.wposts.ID                              |   11 | Using index; Distinct                        |
  18. |  1 | SIMPLE      | wp_term_relationships | ref    | PRIMARY          | PRIMARY | 8       | blog.wposts.ID                              |   19 | Using index; Distinct                        |
  19. |  1 | SIMPLE      | wp_term_taxonomy      | eq_ref | PRIMARY          | PRIMARY | 8       | blog.wp_term_relationships.term_taxonomy_id |    1 | Using where; Distinct                        |
  20. +—-+————-+———————–+——–+——————+———+———+———————————————+——+———————————————-+
  21. 4 rows in set (0.02 sec)
  22.  
  23. mysql>
  24.  

     

     

  1. mysql> show create table wp_posts;
  2. +———-+————————–+
  3. | Table    | Create Table                                                                                                                                                                                                                                                                                                                                                                                                                                 |
  4. +———-+————————–+
  5. | wp_posts | CREATE TABLE `wp_posts` (
  6.   `ID` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
  7.   `post_author` bigint(20) unsigned NOT NULL DEFAULT '0',
  8.   `post_date` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
  9.   `post_date_gmt` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
  10.   `post_content` longtext NOT NULL,
  11.   `post_title` text NOT NULL,
  12.   `post_excerpt` text NOT NULL,
  13.   `post_status` varchar(20) NOT NULL DEFAULT 'publish',
  14.   `comment_status` varchar(20) NOT NULL DEFAULT 'open',
  15.   `ping_status` varchar(20) NOT NULL DEFAULT 'open',
  16.   `post_password` varchar(20) NOT NULL DEFAULT '',
  17.   `post_name` varchar(200) NOT NULL DEFAULT '',
  18.   `to_ping` text NOT NULL,
  19.   `pinged` text NOT NULL,
  20.   `post_modified` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
  21.   `post_modified_gmt` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
  22.   `post_content_filtered` longtext NOT NULL,
  23.   `post_parent` bigint(20) unsigned NOT NULL DEFAULT '0',
  24.   `guid` varchar(255) NOT NULL DEFAULT '',
  25.   `menu_order` int(11) NOT NULL DEFAULT '0',
  26.   `post_type` varchar(20) NOT NULL DEFAULT 'post',
  27.   `post_mime_type` varchar(100) NOT NULL DEFAULT '',
  28.   `comment_count` bigint(20) NOT NULL DEFAULT '0',
  29.   PRIMARY KEY (`ID`),
  30.   KEY `post_name` (`post_name`),
  31.   KEY `type_status_date` (`post_type`,`post_status`,`post_date`,`ID`),
  32.   KEY `post_parent` (`post_parent`),
  33.   KEY `post_author` (`post_author`),
  34.   FULLTEXT KEY `post_related` (`post_title`,`post_content`)
  35. ) ENGINE=MyISAM AUTO_INCREMENT=12033 DEFAULT CHARSET=utf8 |
  36. +———-+———————-+
  37. 1 row in set (0.00 sec)
  38.  
  39. mysql>
  40.  


By the way above output is a paste from the the new PasteBin Open Source (Stikked powered) service I started on pc-freak.net – paste.pc-freak.net (p.pc-freak.net) 🙂

Before I took final decision to disable slow WP plugins, I've experimented a bit trying to add INDEX to Table Column (wposts) in hope that this would speed up SQL queries with:

 

mysql> ALTER TABLE TABLE_NAME ADD INDEX (wposts);

 

But this didn't improve query speed even on the contrary it make execution time worse.

3. Tracking WordPress Plugin PHP Code Execution time and Plugins causing Slow SQL Queries (MySQL bottleneck) issues through WP itself

Well fine, I'm running my own hosted Blog and WordPress sites, but for people who have wordpress sites on shared hosting, there is usually no SSH (Terminal) Access to server, those people will be happy to hear there are 2 Free easy installable WordPress plugins which can be used to Debug Slow WordPress Plugins SQL Queries as well as plugin to Track which plugin takes most time to execute, this are:
 

 

a) P3 Plugin Performance Profiler  

runs a scan over your site to determine what resources your plugins are using, and when, during a standard page request. P3 PPP Can even create reports in a beatiful Excel like Pie chart sheet.

p3-plugin-performance-profiler-godaddy-screenshot-debian-gnu-linux-wordpress-website

Another useful thing to see with P3 PPP is Detailed Timeline it shows when the plugins are being loaded during new page request so you can see if there is a certain sequence in time when a plugin slows down the website.

detailed_timeline-wordpress-p3-performance-plugin-on-website-screenshot

The pictures says it all as P3 PPP is Godaddy's work, congrats to GoDaddy, they've done great job.

 

b) WordPress memory Viewer WP plugins

Is useful to check how much memory each of WordPress plugin is taking on user (visitor) request.
Memory Viewer is allows you to view WordPress’ memory utilization at several hooks during WordPress’ execution. It also shows a summary of MySQL Queries that have ran as well as CPU time.
To use it download it to plugins/ folder as usual enable it from:

Installed Plugins -> (Inactive) -> Memory Viewer (Enable)

To see statistics from Memory Viewer open any post from your blog website and scroll down to the bottom you will notice the statistics, showing up there, like on below screenshot.

wordpress-memory-viewer-plugin-debian-gnu-linux-hosted-website-show-which-plugin-component-eats-most-memory-in-wordprses-blog
 

Though WP Memory Viewer is said to work only up to WP version 3.2.1, I've tested it and it works fine on my latest stable WordPress 4.1 based blog.

c) WordPress Query Monitor

wordpress-query-monitor-plugin-to-monitor-track-and-optimize-problems-with-sql-caused-by-wp-plugins.png
 

Query Monitor is a debugging plugin for anyone developing with WordPress but also very helpful for anyone who want to track issues with plugins who use the database unefficient.
It has some advanced features not available in other debugging plugins, including automatic AJAX debugging and the ability to narrow down things by plugin or theme.
You can view plenty of precious statistics on how enabled plugins query the database server, here is a short overview on its Database Queries capabilities:

  • Shows all database queries performed on the current page
  • Shows affected rows and time for all queries
  • Show notifications for slow queries and queries with errors
  • Filter queries by query type (SELECT, UPDATE, DELETE, etc)
  • Filter queries by component (WordPress core, Plugin X, Plugin Y, theme)
  • Filter queries by calling function
  • View aggregate query information grouped by component, calling function, and type
  • Super advanced: Supports multiple instances of wpdb on one page
  • Once enabled from Plugins you will see it appear as a new menu on bottom Admin raw.

An important note to make here is latest Query Monitor extension fails when loaded on current latest Wordpress 4.1, to use it you will have to download and useolder Query Monitor plugin version 2.6.8 you can download it from here

d) Debug Bar

If you want you want a Memory Viewer like plugin for more complex used components memory debugging, reporting if (WP_DEBUG is set in wp-config.php) also check out Debug Bar .
For me Debug Bar was very useful because it show me depreciated functions some plugins used, so I substituted the obsoleted function with new one.

 

debug-bar-debug-wordpress-plugins-memory-use-screenshot-website


4. Server Hardware hungry (slow) WordPress plugins that you better not use

While spending time to Google for some fixes to WP slow query plugins – I've stumbled upon this post giving a good list with WordPress Plugins better off not to use because they will slow down your site
This is a publicly well known list of WP plugins every WordPress based site adminstrator should avoid, but until today I didn't know so my assumption is you don't know either ..

Below plugins are extremely database intensive mentioned in article that we should better (in all cases!) avoid:

  • Dynamic Related Posts
  • SEO Auto Links & Related Posts
  • Yet Another Related Posts Plugin
  • Similar Posts
  • Contextual Related Posts
  • Broken Link Checker — Overwhelms even our robust caching layer with an inordinate amount of HTTP requests.
  • MyReviewPlugin — Slams the database with a fairly significant amount of writes.
  • LinkMan — Much like the MyReviewPlugin above, LinkMan utilizes an unscalable amount of database writes.
  • Fuzzy SEO Booster — Causes MySQL issues as a site becomes more popular.
  • WP PostViews — Inefficiently writes to the database on every page load. To track traffic in a more scalable manner, both the stats module in Automattic’s Jetpack plugin and Google Analytics work wonderfully.
  • Tweet Blender — Does not play nicely with our caching layer and can cause increased server load.


A good Complete list of known WordPress slow plugins that will hammer down your wordpress performance is here

There are few alternatives to this plugins and when I have some free time I will download and test their alternatives but for now I plan the plugins to stay disabled.
 

For the absolute WP Performance Optimization Freaks, its good to check out the native way to Debug a wordpress installation through using few embedded
variables

 

define('WP_DEBUG', true);
define('WP_DEBUG', false);
define('WP_DEBUG_LOG', true);
define('WP_DEBUG_DISPLAY', false);
define('SAVEQUERIES', true);

 

An article describing how you can use native WP debug variables is here


Happy Optimizing  ! 🙂

Trip to Troyan Bulgaria and Troyan Monastery – Third monastery by size in Bulgaria

Tuesday, August 12th, 2014

Troan Monastery Church - Trip to Troyan Monastery from 16th century Bulgaria - 3rd monastery by size in Bulgaria
This weekend I went with my wife for a Trip To Troyan monastery from Sofia – bus ticket currently costs 12 lv (6 euro) and the distance is rawly 160 km.

Troyan is a remarkable mountain city situated in the center (heart) of Bulgaria, famous with being one of the main places where opposition and preparation for the Turkish Bulgarian war occured. Troyan monastery situated near Oreshaka village was one of the places where the idea of liberation of Bulgaria originated. Troyan was often visited by the remarkable revolutionaries and greatest Bulgarian heroes of all times like Vasil Levski and Hristo Botev.

Troyan Monastery - ancient orthodox monastery in Bulgaria from 16th century

Here in Troyan there was existing one of the many secret commitees in period (1869 – 1876) – Central Secret Revolutionary Committee (BRCK – as widely known in Bulgaria), creation of this commitee become reality thanks to the Deacon Vasil Levsky who saw there is no awakened Bulgarians to fight for national freedom.
Efforts of CSRC later lead to Liberation of Bulgarian from 500 years Bulgarians being under the yoke of Turkish Slavery.

Eco path in the steps of the Apostle of Freedom Vasil Levsky Bulgaria

Our first impressions from Troyan were quite negative, the bus station looks post communistic and a little bit like a horror movie, near the bus station there was a lot of criminal looking gipsies.
Just 5 minutes walk from there is a small beautiful park with children playground, what impressed me most in the park is a bush cutted in the form of ancient amphora and next to the park is the city center surrounded by a river Beli Osym, all from the city center you can see the beatiful mountains all around. There are two historical museums filled with archaelogical remains from early ages, national dresses, weapons from the Liberation war, explanation with chunks of history and Bulgarian national heroes connected to Troyan, there are beautiful expoisitions on how locals used to live through the ages museums, famous paintings original of local artistsBulgaria is a unique country, because of it combines outstanding nature and rich history remains of which is well preserved and standing firm testifying about the Bulgaria glorious past.

Entrance door of The Troyan Monastery - Troianska sveta obitel uspenie Bogorodichno

After taking a walk in the city center, we went to a local city bus station to take a bus to Oreshaka village – at the end of which is located Troyan Monastery. His Beuaitutide Patriarch Maxim who passed away 98 years old was born in Oreshaka village and become monk in Troyan monastery and was a brother of Troan monastery. Currently his holy body is buried in the monastery which is titled "The Dormition of the most Holy Theotokos".  One can feel the place is graceful even from reaching near Oreshaka village, the near view is also stunningly beautiful. The bus from Troyan has a bus stop right in front of the monastery and is cheap (costed only 1.90 lv per person 0.80 euro cents). Bus to the monastery travels 4 times a day, so it was convenient to reach the monastery.
Oreshaka and Troyan region is well famous since ancient times with its skillful craftsman and all kind of crafts developing.

Tryoan monastery mamut and lion - monuments from ancient God creation

Near the monastery there is small chapel from which the monastery started, the history of Troyan monastery, all revives around the miraculous icon of Holy Theotokos (Troeruchica – The Tree Handed Virgin).

Miracle making icon in Troyan Monastery Holy Virgin (Theotokos) Troeruchica - Tree Handed

The monastery story revives around this icon, a monk from holy Mount Athos was travelling to Vlashko (nowadays situated in Carpathians – Romania near border with Moldova), on his way he heard about a hermit with his pupil living near Oreshaka region and spend some time in fasting and prayer with the hermit local people heard about the miracle making icon and come from near and distant regions to venerate the Holy Virgin and pray. When the time come and he decided to move further in his trip to Vlashko he put the icon on his settled horse, made the sign of the cross and walked after few steps the horse stumbled and break his leg, in this event the monk understand it is not God's will to travel and he returned back to the hermit. After spending some time with the hermit, he settled again his horse but on exactly the same place the horse fall again – in that the monk understood this happens because the icon wants to stay on that place. The hermit offered to the monk that he stay there and they service God together, but traveling monk rejected, he venerated the holy icon for a last time and continued his travel to Vlashko. A small brotherhood formed by God's providence near the hermit and they decided to make a small wooden Church for Troeruchica and started servicing God there. This is how Troyan monastery started in the XVI century. The Glory of the Holy icon of Virgin Mary (Troeruchica) quickly spread all around enslaved Bulgarian lands and people come from all regions to pray to the Virgin to cure them, grant them good fortune, good health, solve spritual and family problems … The notes over the last 400 years shows that everyone that come with faith and prayed in front of the Virgin icon found confort, healing, numb started talking, deaf started hearing, paralytics walked.

Sveta_Bogorodica-Troeruchica-Holy-Theotokos-miracle-making-icon-Troyan

Monastery chronicles say that thanks to the Theotokos Troeruruchica in year 1837 the icon saved the locals from the black death which was taking its toll in the region, nobody that came to the monastery to ask for protection from the plague didn't suffered plague, everyone that decided to stay in the monastery during the plague survived, even though people from all around were coming to confess and take the sacraments, no one in the monastery wasn't infected by plague.

We arrived in Troyan Monastery around 16:30 and by arriving were hospitally accepted by our marriage godfather Galin and his sister Denica and were threated with fresh watermelon and even 50 grams of Bulgarian traditional drink Rakia. They're currently painting walls in the monastery dining room in 18:00 we had the blessing to attend the evening Church service. The service was deep and unique experience that moves you to the Kingdom of heaven. After the Church service we went to nearby Mehana Kaizer (Old Bulgarian Dining Inn – Krychma whole made to look in Old Bulgarian Style – there is plenty of traditional food to choose and food was super delicious 🙂

kaizer-krychma-traditional-inn-pub-near-Troyan-monastery

On Sunday 10.08.2014 we were for the Holy Liturgy service and after that we walked through the monastic Church and saw near the Church the bell tower and next to it the old monks monastic graveyard. We visited also the museum of the monastery which contains various religious use objects dating back from year 1700+, old  craftmen instruments, old icons, potirs, priest clothes, old coins from all around the world and Bulgaria. There was a lot of information about historical facts regarding the monastery brotherhood, as well as some chronicles and documents explaining participation of the monastery in the fight for national freedom of Bulgaria. The musem is made of two rooms one of which was the same room where the Apostle of Freedom Vasil Levsky – one can see there the exact hiding place which Vasil Levsky was using to sleep secretly – the hiding place looks like a normal wardrobe.

Scyth saint Nicolas near Troan Monastery Oreshaka Bulgaria - revolutionary city led to freedom of Bulgaria

After seeing the museum, we went to see the monastic Scyth – "Saint Nicola", which was used earlier by the monks, whenever they wanted to have period of seclusion to raise their spiritual life. The Scyth has a large Church in honor of Saint Nicolas, most likely this Church was visited by people from the village, in times when Christians in Bulgaria was forbidden to attend Church services by Turkish Empire – and this is why it was build in such a secluded place. Near the scyth is the grave of a famous rebel for Bulgarian Freedom, and there is a cave with a spring.

Graveyard and skeleton of haidut - rebel Velko fighter for Bulgarian freedom Schyth near Troyan Monastery

Then we walked back the road to Troan Monastery and near the monastery, we went to see workshop of a carpenter lady who makes wooden ornaments for Churches in the region and the monastery.

The lady give us some herbs as a blessing. We had the chance to also take the blessing from the current Abbot Biship Sionij who was earlier rector of Sofia's Seminary Saint "John of Rila".

Linux: basic system CPU, Disk and Network resource monitoring via phpsysinfo lightweight script

Wednesday, June 18th, 2014

phpsysinfo-logo-simple-way-to-web-monitor-windows-linux-server-cpu-disk-network-resources

There are plenty of GNU / Linux softwares to monitor server performance (hard disk space, network and CPU load) and general hardware health both text based for SSH console) and from web.

Just to name a few for console precious tools, such are:

And for web based Linux / Windows server monitoring my favourite tools are:

phpsysinfo is yet another web based Linux monitoring software for small companies or home router use it is perfect for people who don't want to spend time learning how to configure complicated and robust multiple server monitoring software like Nagios or Icanga.

phpsysinfo is quick and dirty way to monitor system uptime, network, disk and memory usage, get information on CPU model, attached IDEs, SCSI devices and PCIs from the web and is perfect for Linux servers already running Apache and PHP.

1. Installing PHPSysInfo on Debian, Ubuntu and deb derivative Linux-es

PHPSysInfo is very convenient and could be prefered instead of above tools for the reason it is available by default in Debian and Ubuntu package repositories and installable via apt-get and it doesn't require any further configuration, to roll it you install you place a config and you forget it.
 

 # apt-cache show phpsysinfo |grep -i desc -A 2

Description: PHP based host information
 phpSysInfo is a PHP script that displays information about the
 host being accessed.

 

Installation is a piece of cake:

# apt-get install --yes phpsysinfo

Add phpsysinfo directives to /etc/apache2/conf.d/phpsysinfo.conf to make it accessible via default set Apache vhost domain under /phpsysinfo

Paste in root console:
 

cat > /etc/apache2/conf.d/phpsysinfo.conf <<-EOF
Alias /phpsysinfo /usr/share/phpsysinfo
<Location /phpsysinfo>
 Options None
 Order deny,allow
 Deny from all
 #Allow from localhost
 #Allow from 192.168.56.2
 Allow from all
</Location>
EOF

 

Above config will allow access to /phpsysinfo from any IP on the Internet, this could be a security hole, thus it is always better to either protect it with access .htaccess password login or allow it only from certain IPs, from which you will access it with something like:

Allow from 192.168.2.100

Then restart Apache server:

# /etc/init.d/apache2 restart

 

To access phpsysinfo monitoring gathered statistics, access it in a browser http://defaultdomain.com/phpsysinfo/

phpsysinfo_on_debian_ubuntu_linux-screenshot-quick-and-dirty-web-monitoring-for-windows-and-linux-os

2. Installing PHPSysinfo on CentOS, Fedora and RHEL Linux
 

Download and untar

# cd /var/www/html
# wget https://github.com/phpsysinfo/phpsysinfo/archive/v3.1.13.tar.gz
# tar -zxvf phpsysinfo-3.1.13.tar.gz
# ln -sf phpsysinfo-3.1.13 phpsysinfo
# mv phpsysinfo.ini.new phpsysinfo.ini

 

Install php php-xml and php-mbstring RPM packages
 

yum -y install php php-xml php-mbstring
...

Start Apache web service

[root@ephraim html]# /etc/init.d/httpd restart

[root@ephraim html]# ps ax |grep -i http
 8816 ?        Ss     0:00 /usr/sbin/httpd
 8819 ?        S      0:00 /usr/sbin/httpd

phpsysinfo-install-on-centos-rhel-fedora-linux-simple-monitoring

As PhpSysInfo is written in PHP it is also possible to install phpsysinfo on Windows.

phpsysinfo is not the only available simple monitoring server performance remotely tool, if you're looking for a little bit extended information and a better visualization interface alternative to phpsysinfo take a look at linux-dash.

In context of web monitoring other 2 web PHP script tools useful in remote server monitoring are:

OpenStatus – A simple and effective resource and status monitoring script for multiple servers.
LookingGlass – User-friendly PHP Looking Glass (Web interface to use Host (Nslookup), Ping, Mtr – Matt Traceroute)

luckyBackup Linux GUI back-up and synchronization tool

Wednesday, May 14th, 2014

luckybackup_best-linux-graphical-tool-for-backup_linux_gui-defacto-standard-tool
If you're a using GNU / Linux  for Desktop and you're already tired of creating backups by your own hacks using terminal and you want to make your life a little bit more easier and easily automate your important files back up through GUI program take a look at luckyBackup.

Luckibackup is a GUI frontend to the infamous rsync command line backup  tool. Luckibackup is available as a package in almost all modern Linux distributions its very easy to setup and can save you a lot of time especially if you have to manage a number of your Workplace Desktop Office Linux based computers.
Luckibackup is an absolute must have program for Linux Desktop start-up users. If you're migrating from Microsoft Windows realm and you're used to BackupPC, Luckibackup is probably the defacto Linux BackupPC substitute.

The sad news for Linux GNOME Desktop users is luckibackup is written in QT and it using it will load up a bit your notebook.
It is not installed by default so once a new Linux Desktop is installed you will have to install it manually on Debian and Ubuntu based Linux-es to install Luckibackup apt-get it.

debian:~# apt-get install --yes luckibackup
...

On Fedora and CentOS Linux install LuckiBackup via yum rpm package manager

[root@centos :~]# yum -y install luckibackup
.

Luckibackup is also ported for OpenSuSE Slackware, Gentoo, Mandriva and ArchLinux. In 2009 Luckibackup won the prize of Sourceforge Community Choice Awards for "best new project".

luckyBackup copies over only the changes you've made to the source directory and nothing more.
You will be surprised when your huge source is backed up in seconds (after the first backup).

Whatever changes you make to the source including adding, moving, deleting, modifying files / directories etc, will have the same effect to the destination.
Owner, group, time stamps, links and permissions of files are preserved (unless stated otherwise).

Luckibackup creates different multiple backup "snapshots".Each snapshot is an image of the source data that refers to a specific date-time.
Easy rollback to any of the snapshots is possible. Besides that luckibackup support Sync (just like rsync) od any directories keeping the files that were most recently modified on both of them.

Useful if you modify files on more than one PCs (using a flash-drive and don't want to bother remembering what did you use last. Luckibackup is capable of excluding certain files or directories from backupsExclude any file, folder or pattern from backup transfer.

After each operation a logfile is created in your home folder. You can have a look at it any time you want.

luckyBackup can run in command line if you wish not to use the gui, but you have to first create the profile that is going to be executed.
Type "luckybackup –help" at a terminal to see usage and supported options.
There is also TrayNotification – Visual feedback at the tray area informs you about what is going on.
 

 

 

IQ world rank by country and which are the smartest nations

Friday, March 14th, 2014

IQ_world_rank_by_country_world_distribution_of_intelligence
In a home conversation with my wife who is Belarusian and comparison between Bulgarian and Belarusian nation, the interesting question arised – Which nation is Smarter Bulgarian or Belarusian?

This little conversation pushed me to intriguing question What is the IQ World rank if compared by country? Since a moment of my life I'm trying to constantly prove to myself I'm smart enough. For years my motivation was to increase my IQ. I had periods when studied hard history, philosophy and literature then I had periods to put all my efforts in music and mysticism then there was my fascination about IT and informatics and hacking, I had periods with profound interest in Biology and neourosciences, then of course psychology and social sciences and since last 10 years as I belived in God, I'm deeply interested in world religions and more particularly in Christniaty. All this is connected with my previous IQ (Intelligence Quotient) and my desire to develop my IQ. I'm quite aware that IQ statistics can never be 100% reliable as there is deviation (standard error) and its a very general way to find out about a person psychology. But anyways it is among the few methods to compare people's intelligence… I've done an IQ test in distant 2008 and I scored about 118 out of 180  – meaning my  IQ level is a little bit above average. The IQ conversation triggered my curiousity so I decided to check if my current IQ has changed over the last 6 years. Here is results from test I took March, 2013 on free-iqtest.net

IQ Test
IQtest just prooved, my IQ kept almost same, still a little bit above avarage.
Further on, I did investgation online to see if I can prove to my wife the thesis Bulgarians overall IQ is higher than Belarusian. I googled for IQ world rank by Country
Here is what I found ;

 

Nations Intelligence as sorted by Country

Rank
——–

Country
———————–

%
————-

1

Singapore

108

2

South Korea

106

3

Japan

105

4

Italy

102

5

Iceland

101

5

Mongolia

101

6

Switzerland

101

7

Austria

100

7

China

100

7

Luxembourg

100

7

Netherlands

100

7

Norway

100

7

United Kingdom

100

8

Belgium

99

8

Canada

99

8

Estonia

99

8

Finland

99

8

Germany

99

8

New Zealand

99

8

Poland

99

8

Sweden

99

9

Andorra

98

9

Australia

98

9

Czech Republic

98

9

Denmark

98

9

France

98

9

Hungary

98

9

Latvia

98

9

Spain

98

9

United States

98

10

Belarus

97

10

Malta

97

10

Russia

97

10

Ukraine

97

11

Moldova

96

11

Slovakia

96

11

Slovenia

96

11

Uruguay

96

12

Israel

95

12

Portugal

95

13

Armenia

94

13

Georgia

94

13

Kazakhstan

94

13

Romania

94

13

Vietnam

94

14

Argentina

93

14

Bulgaria

93

15

Greece

92

15

Ireland

92

15

Malaysia

92

16

Brunei

91

16

Cambodia

91

16

Cyprus

91

16

FYROM

91

16

Lithuania

91

16

Sierra Leone

91

16

Thailand

91

17

Albania

90

17

Bosnia and Herzegovina

90

17

Chile

90

17

Croatia

90

17

Kyrgyzstan

90

17

Turkey

90

18

Cook Islands

89

18

Costa Rica

89

18

Laos

89

18

Mauritius

89

18

Serbia

89

18

Suriname

89

19

Ecuador

88

19

Mexico

88

19

Samoa

88

20

Azerbaijan

87

20

Bolivia

87

20

Brazil

87

20

Guyana

87

20

Indonesia

87

20

Iraq

87

20

Myanmar (Burma)

87

20

Tajikistan

87

20

Turkmenistan

87

20

Uzbekistan

87

21

Kuwait

86

21

Philippines

86

21

Seychelles

86

21

Tonga

86

22

Cuba

85

22

Eritrea

85

22

Fiji

85

22

Kiribati

85

22

Peru

85

22

Trinidad and Tobago

85

22

Yemen

85

23

Afghanistan

84

23

Bahamas, The

84

23

Belize

84

23

Colombia

84

23

Iran

84

23

Jordan

84

23

Marshall Islands

84

23

Micronesia, Federated States of

84

23

Morocco

84

23

Nigeria

84

23

Pakistan

84

23

Panama

84

23

Paraguay

84

23

Saudi Arabia

84

23

Solomon Islands

84

23

Uganda

84

23

United Arab Emirates

84

23

Vanuatu

84

23

Venezuela

84

24

Algeria

83

24

Bahrain

83

24

Libya

83

24

Oman

83

24

Papua New Guinea

83

24

Syria

83

24

Tunisia

83

25

Bangladesh

82

25

Dominican Republic

82

25

India

82

25

Lebanon

82

25

Madagascar

82

25

Zimbabwe

82

26

Egypt

81

26

Honduras

81

26

Maldives

81

26

Nicaragua

81

27

Barbados

80

27

Bhutan

80

27

El Salvador

80

27

Kenya

80

28

Guatemala

79

28

Sri Lanka

79

28

Zambia

79

29

Congo, Democratic Republic of the

78

29

Nepal

78

29

Qatar

78

30

Comoros

77

30

South Africa

77

31

Cape Verde

76

31

Congo, Republic of the

76

31

Mauritania

76

31

Senegal

76

32

Mali

74

32

Namibia

74

33

Ghana

73

34

Tanzania

72

35

Central African Republic

71

35

Grenada

71

35

Jamaica

71

35

Saint Vincent and the Grenadines

71

35

Sudan

71

36

Antigua and Barbuda

70

36

Benin

70

36

Botswana

70

36

Rwanda

70

36

Togo

70

37

Burundi

69

37

Cote d'Ivoire

69

37

Ethiopia

69

37

Malawi

69

37

Niger

69

38

Angola

68

38

Burkina Faso

68

38

Chad

68

38

Djibouti

68

38

Somalia

68

38

Swaziland

68

39

Dominica

67

39

Guinea

67

39

Guinea-Bissau

67

39

Haiti

67

39

Lesotho

67

39

Liberia

67

39

Saint Kitts and Nevis

67

39

Sao Tome and Principe

67

40

Gambia, The

66

41

Cameroon

64

41

Gabon

64

41

Mozambique

64

42

Saint Lucia

62

43

Equatorial Guinea

59

 

North Korea

N/A

 

– Countries are ranked highest to lowest national IQ score.

Above statistics are taken from a work carried out earlier this decade by Richard Lynn, a British psychologist, and Tatu Vanhanen, a Finnish political scientist. To extract statistics they analized  IQ studies from 113 countries.  

For my surprise it appeared Belarusian (ranking 10th in the world) have generally higher IQ than Bulgarians (ordering 14th). Anyways being 14th in world IQ Ranking is not bad at all as we still rank in the top 20 smartest nations.

IQ is a relative way to measure intelligence, so I don't believe these statistics are revelant but they give some very general idea about world IQs.

I learned there are some claims that in more developed economies people have higher IQs than less developed. If we take in consideration above statistics its obvious such claims are dubious as you can see there are countries in top 5 countries with highest IQ, and surely Mongolia is not to be ordered in countries with high economic development.

There are plenty of other interesting researches like "Does IQ relates to people Income?", Does Religious people score higher than atheists? According to research done in U.S. Atheists score 6 IQ points higher than Religious people. However most "religous" people IQ tested were from protestant origin so results are relative (I'm sure Orthodox Christian would score higher 🙂 ). The IQ nation world ranks fail in a way that, a social, economic and historical factors are not counted. According to Gallups research, the world poorest people tend to be the most religious, a fact supporting well the saying of all saints who say that for saintly life people who preferred deliberately to live as poor people.

 

Linux: Generating Web statistics from Old Apache logs with Webalizer

Thursday, July 25th, 2013

Webalizer generate and visualize in web page statistics of old websites howto webalizer static html google analytics like statistics on linux logo

Often it happens, that some old hosted websites were created in a way so no Web Statistics are available. Almost all modern created websites nowadays are already set to use Google AnalyticsAnyhow every now and then I stumble on hosting clients whose websites creator didn't thought on how to track how many hits or unique visitors site gets in a month / year etc.
 Thanksfully this is solvable by good "uncle" admin with help with of Webalizer (with custom configuration) and a little bit of shell scripting.

The idea is simple, we take the old website logs located in lets say 
/var/log/apache2/www.website-access.log*,
move files to some custom created new directory lets say /root/www.website-access-logs/ and then configure webalizer to read and generate statistics based on log in there.

For the purpose, we have to have webalizer installed on Linux system. In my case this is Debian GNU / Linux.

For those who hear of Webalizer for first time here is short package description:

debian:~# apt-cache show webalizer|grep -i description -A 2

Description-en: web server log analysis program
The Webalizer was designed to scan web server log files in various formats
and produce usage statistics in HTML format for viewing through a browser.

 If webalizer is not installed still install it with:

debian:~# apt-get install --yes webalizer
...
.....

Then make backup copy of original / default webalizer.conf (very important step especially if server is already processing Apache log files with some custom webalizer configuration:

debian:~# cp -rpf /etc/webalizer/webalizer.conf /etc/webalizer/webalizer.conf.orig

Next step is to copy webalizer.conf with a name reminding of website of which logs will be processed, e.g.:

debian:~# cp -rpf /etc/webalizer/webalizer.conf /etc/webalizer/www.website-webalizer.conf

In www.website-webalizer.conf config file its necessary to edit at least 4 variables:

LogFile /var/log/apache2/access.log
OutputDir /var/www
#Incremental no
ReportTitle Usage statistics for

 Make sure after modifying 3 vars read something like:  
LogFile /root/www.website/access_log_merged_1.log
OutputDir /var/www/www.website
Incremental yes
ReportTitle Usage statistics for Your-Website-Host-Name.com

Next create /root/www.website and /var/www/www.website, then copy all files you need to process from /var/log/apache2/www.website* to /root/www.website:

debian:~# mkdir -p /root/www.website
debian:~# cp -rpf /var/log/apache2/www.website* /root/www.website

On Debian Apache uses logrotate to archive old log files, so all logs except www.website-access.log and wwww.website-access.log.1 are gzipped:

debian:~#  cd /root/www.website
debian:~# ls 
www.website-access.log.10.gz
www.website-access.log.11.gz
www.website-access.log.12.gz
www.website-access.log.13.gz
www.website-access.log.14.gz
www.website-access.log.15.gz
www.website-access.log.16.gz
www.website-access.log.17.gz
www.website-access.log.18.gz
www.website-access.log.19.gz
www.website-access.log.20.gz
...
 

Then we have to un-gzip zipped logs and create one merged file from all of them ready to be red later by Webalizer. To do so I use a tiny shell script like so:

for n in {52..1}; do gzip -d www.dobrudzhatour.net-access.log.$n.gz; done
for n in {52..1}; do cat www.dobrudzhatour.net-access.log.$n >> access_log_merged_1.log;
done

First look de-gzips and second one does create a merged file from all with name access_merged_1.log The range of log files in my case is from www.website-access.log.1 to www.website-access.log.52, thus I have in loop back number counting from 52 to 1.

Once access_log_merged_1.log is ready we can run webalizer to process file (Incremental) and generate all time statistics for www.website:

debian:~# webalizer -c /etc/webalizer/webalizer-www.website-webalizer.conf

Webalizer V2.01-10 (Linux 2.6.32-27-server) locale: en_US.UTF-8
Using logfile /root/www.website/access_log_merged_1.log (clf)
Using default GeoIP database Creating output in /var/www/webalizer-www.website
Hostname for reports is 'debian'
Reading history file… webalizer.hist
Reading previous run data.. webalizer.current
333474 records (333474 ignored) in 37.50 seconds, 8892/sec

To check out just generated statistics open in browser:

http://yourserverhost/webalizer-www.website/

or

http://IP_Address/webalizer-www.website

 You should see statistics pop-up, below is screenshot with my currently generated stats:

Webalizer website access statistics screenshot Debian GNU Linux

Secret Life Of Machines – The Telephone (Full Length)

Monday, June 25th, 2012

Secret-Life-of-Machines-the-telephone-full-length

Here is an interesting video talking about the origin of modern telephone communication.

In short first was the telegraph, then came the morse code. Then a way was found by bell to transmit voice on a short distances. Then Edisson's advancements make possible the telephone to exist to a primordial wall stick form of a modern telephone.

Its interesting to see the many woman which were used as a phone call operators in the rise of telephone. Then a little by little the phone operators were substituted by technology. Up to the point that now it is only computers that makes the phone communication reality.

Finally after a few stages of developments came the raise of modern telephone as we know it. And a little bit later the mobile phone. Nowdays we've become totally dependent on phones and often this little communicator devices we have to carry all around makes our life bitter and unrelaxed.
 

Secret Life Of Machines – The Telephone (Short History of the Telephone) [ Full Length ]

Well hope you enjoy the short documentary ! 🙂