InnoDB: Unable to lock ./ibdata1, error: 11

  Today, I saw that our mysql server suddenly went down and on checking mysql server logs, following thing was noticed.   InnoDB: Unable to lock /path/to/ibdata1, error: 11 InnoDB: Check that you do not already have another mysqld process InnoDB: using the same InnoDB data or log files. To fix this issue, make a copy of …

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Recovering Parallels Plesk panel password

  Following are the steps to recover Plesk Control Panel Password. 1. SSH to the server as root user. 2. For Plesk version 10.1 and below, you can use following command to check/retrieve password. cat /etc/psa/.psa.shadow   This file contains your admin Parallels Plesk Panel password Parallels Plesk Panel 10.2, however, encrypts this file. To view …

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mysql :Got error: 1016: Can’t open file: … (errno: 24) when using LOCK TABLES

  Sometimes, when you have got a large number of tables in your database and while taking the dump of that particular database, you would have encountered this strange error.  mysqldump: Got error: 1016: Can’t open file: ‘.\database\certain_table.frm’ (errno: 24) when using LOCK TABLES   There are two solutions for this problem. 1) Set the following …

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Access tomcat Admin area

Accessing Tomcat Admin area: http://server-ip-address:8080/admin/ You may receive a message:   This is because, by default admin section of tomcat is not enable. To enable Admin section, you can refer to following steps. “%TOMCAT_FOLDER%/conf/tomcat-users.xml” manually. If you have a cPanel server then you will find the file /usr/local/jakarta/tomcat/conf/tomcat-users.xml Before editing the file: <?xml version=’1.0′ encoding=’utf-8′?> <tomcat-users> <!– …

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time

Change timezone on dedicated server

Change timezone on CentOS If you have CentOS/RHEL Server then you can fallow following steps: 1) SSH the server as root. All Time zone configuration files are located under directory /usr/share/zoneinfo/ Example: Say your current server time is in GMT Format and you want to change it to IST time. cp /usr/share/zoneinfo/Asia/Calcutta     /etc/localtime Thats all   …

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InnoDB: Unable to lock ./ibdata1, error: 11Recovering Parallels Plesk panel passwordmysql :Got error: 1016: Can’t open file: … (errno: 24) when using LOCK TABLESAccess tomcat Admin areaChange timezone on dedicated server

Nov 23

The MySQL® server is currently offline

Categories:

Cpanel/Whm

by admin

While going to cPanel >> Mysql database I was getting following error:

Error!

The MySQL® server is currently offline


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On checking server side I found that mysql service is online and still cPanel was throwing the error.

FIX:

This issue is mainly caused when mysql root password is not set on the server.
To fix the issue Login to WHM as root and go to SQL Services >> MySQL Root Password and reset the password.

 

Now try creating Mysql database from cPanel.

 

 


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Nov 14

Restart Ruby On Rails service.

Categories:

Cpanel/Whm

by admin

How To Restart Ruby On Rails for a specific Web Application ?

1) Go to the Document Root of the rails application and execute following commands.

 

root@server[~] cd /home/username

root@server[~] cd rails_apps

root@server[~] cd demo (Application name)

root@server[~] mongrel_rails mongrel::restart


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Nov 03

MySQLCouldn’t find MySQL manager

Categories:

Mysql

by admin

Restarting mysql was giving following error



[root@server]# /etc/init.d/mysql restart


MySQL manager or server PID file could not be found!       [FAILED]
Starting MySQLCouldn't find MySQL manager (/var/lib/bin/mysql) or
server (/var/lib/bin/mysqld_safe)




FIX:


Comment out or remove the basedir directive from /etc/my.cnf file 




[mysql.server ]

server=mysql

#basedir=/var/lib




Then restart mysql


That's all :) 



   

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            	Nov
                01
                            

                    

            		
                
        		
		        
		        

			
				sample python script            
			        

		
		
						

			
									Categories: 
			
Script

						
									
									
						            

				by admin			

											
						
					

				
				

						
							
												
								
You can use following python script to check whether python is running correctly on your server.


1) Create a script with extension py say sample.py and add following code to it.


 


#!/usr/bin/python


import cgi

print("<Content-Type: text/html\n")

print("ok")




 


2) Access script in the browser.


http://www.your-site-name.com/sample.py


3) Output of this script should be “OK” If you see complete code in the browser then this indicate that code is not being compiled by python. to fix this create a .htaccess file and add following code.


AddHandler cgi-script .cgi .py .pl


 


 


        

        
    



   

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            	Oct
                24
                            

                    

            		
                
        		
		        
		        

			
				Install shoutcast            
			        

		
		
						

			
									Categories: 
			
Linux

						
									
									
						            

				by admin			

											
						
					

				
				

						
							
												
								
SHOUTcast is a application for streaming media over the Internet.


Following are the steps to install SHOUTCAST.


1) SSH to the server as root


2) Add user and password for shoutcast.


 


# adduser shoutcast

# passwd shoutcast


3) Now ssh to shoutcast user ans do following.


# wget ftp://ftp.skynet.be/mirror1/tucows.skynet.be/linux/files/shoutcast-1-9-2-linux-glibc6.tar.gz


# tar -zxvf shoutcast-1-9-2-linux-glibc6.tar.gz

# rm -rf shoutcast-1-9-2-linux-glibc6.tar.gz

# mv shoutcast-1-9-2-linux-glibc6 shoutcast

# cd shoutcast


4) Configuring shoutcas for MaxUser, Password ans Port.


# vi pico sc_serv.conf OR nano sc_serv.conf

and configure settings corresponding to

MaxUser

Password

PortBase


5) uncomment AdminPassword and set an admin password of your choice. this password can be used to access shoutcast admin panel.


6) Save the file and start shoutcast.


./sc_serv sc_serv.conf


        

        
    



   

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