Google charts

	Skill level: Medium
	The instructions on this page require a basic knowledge of linux.

Is this article helpful to you?
Please consider donating or volunteering
Thank you!

About

"Charts Google chart tools are powerful, simple to use, and free. Try out our rich gallery of interactive charts and data tools.

Forum discussion

This how-to can be discussed on the forums here

The rational for behind this is : You have a database / source of information that you would like to graph. In this instance, I needed to see in fairly real-time, the number of http processes as well as the size of these processes.

It could be applied to a multitude of scenarios.

Getting Started

1. Find the relevant info re; http

ps -ylC httpd | awk '{x += $8;y += 1} END {print "Apache Memory Usage (MB): "x/1024; print "Average Proccess Size (MB): "x/((y-1)*1024)}' && echo -n 'current Apache Processes : ' && ps -C httpd --no-headers | wc -l

This outputs the following information;

Apache Memory Usage (MB): 1737.91
Average Proccess Size (MB): 75.5611
current Apache Processes : 23

2. Now we must create a database to hold the information -( how you name the database, table and the columns is up to you ), I'll use the following :

• Database name : apache_stats
• Table name : performance
• Columns : number, mem_used, process_size, processors_used, period

the sql is below :

-- MySQL dump 10.13  Distrib 5.1.73, for redhat-linux-gnu (x86_64)
--
-- Host: localhost    Database: apache_stats
-- ------------------------------------------------------
-- Server version       5.1.73

/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8 */;
/*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */;
/*!40103 SET TIME_ZONE='+00:00' */;
/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;

--
-- Table structure for table `performance`
--

DROP TABLE IF EXISTS `performance`;
/*!40101 SET @saved_cs_client     = @@character_set_client */;
/*!40101 SET character_set_client = utf8 */;
CREATE TABLE `performance` (
 `number` int(11) NOT NULL AUTO_INCREMENT,
 `mem_used` int(10) unsigned NOT NULL,
 `process_size` int(10) unsigned NOT NULL DEFAULT '0',
 `processors_used` int(10) unsigned NOT NULL,
 `period` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
 PRIMARY KEY (`number`),
 KEY `index` (`number`)
) ENGINE=MyISAM AUTO_INCREMENT=1 DEFAULT CHARSET=latin1;
/*!40101 SET character_set_client = @saved_cs_client */;
/*!40103 SET TIME_ZONE=@OLD_TIME_ZONE */;

/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;
/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;
/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;
/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;

-- Dump completed on 2015-11-26 23:35:11

Save the above into a file called : apache_memory_usage_show_to_database.sql

3. Create the database:

#mysql  < apache_memory_usage_show_to_database.sql

Set the user access :

#mysql
mysql> GRANT ALL PRIVILEGES ON apache_stats.* TO stats@localhost IDENTIFIED BY 'Your Password';

mysql> flush privileges;

4.Prepare the collection of the relevant parameters that you want to monitor ( in this case, http stats )

create a shell script: ( apache_memory_usage_show_to_database.sh )

#/usr/bin
while true
do
LOG=outlog.txt
OUTPUT=$(ps -ylC httpd | awk '{x += $8;y += 1} END {print "Apache Memory Usage (MB): "x/1024; print ":Average Proccess Size (MB): "x/((y-1)*1024)}' && echo -n ':Apache Processes: ' && ps -C httpd --no-headers | wc -l  )
DAY=$(date +"%F"+"%T")
now=$(date +'%Y-%m-%d %H:%M:%S')

echo $OUTPUT \'$DAY\' | awk  '{print "INSERT INTO performance (mem_used, process_size, processors_used,period) VALUES  ( "$5", "$10", "$13", "$14" );"}' | mysql --user=username --password=password database_name
sleep 120
done

This script will insert the values for the http memory used , http process size, number of http processes running and the date+time into the database every 2 minutes

Make the script executable:

chmod 755 apache_memory_usage_show_to_database.sh

5. Create a method to run the script above - ( there are better ways to do this , but I've just used the following for now ):

nohup ./apache_memory_usage_show_to_database.sh &

6.Wait 10 minutes or so while data is written to the database, the check whats been written :

#mysql

mysql> use apache_stats

mysql> select * from performance limit 5;

 +-------+----------+--------------+-----------------+---------------------+
| index | mem_used | process_size | processors_used | date                |
+-------+----------+--------------+-----------------+---------------------+
|     1 |      195 |           18 |              11 | 2015-08-18 16:26:48 |
|     2 |      195 |           18 |              11 | 2015-08-18 16:27:29 |
|     3 |      195 |           18 |              11 | 2015-08-18 16:28:48 |
|     4 |      195 |           18 |              11 | 2015-08-18 16:29:29 |
|     5 |      195 |           18 |              11 | 2015-08-18 16:30:48 |
+-------+----------+--------------+-----------------+---------------------+
5 rows in set (0.00 sec)

OK , so now i have the data been monitored, I now need a way to present / view this in an ibay :