Problem in IMS services? I have jumped into this strange problem when I tried to remove a logical volume. Things would have been easy if I had used lsof command The logical volume was named /dev/lvols/ubuntu64 At first [bash] $lvremove /dev/lvols/ubuntu64 [/bash] This command couldn’t remove the logical volume the next command I tried was […]
device-mapper: remove ioctl failed: Device or resource busy Read More »
10 points to increase troubleshooting skills and become a good Server Admin 1) Be clear with the concepts You will be learning lot of things in random in your day-to-day work, but essentially what you need to remember are the basic concepts of each technology you have come across, starting from basic commands, services associated,
How to develop troubleshooting skills and become a good server admin Read More »
Qmail is a wonderful MTA in all sense but its quite easy to have the troubles like your queue getting filled up and you don’t know how to flush the queue. I’ll give you some insights how to do that If you have already downloaded qmHandle you can remove the mails by issuing the command
Qmail flush stuck queue Read More »
dig is a command line tips for querying DNS name servers for information about host addresses, mail exchanges, name servers, and related information. Understanding the default output The most typical, simplest query is for a single host Command line tips. By default, however, dig is pretty verbose. You probably don’t need all the information in
Command-line tips: Understanding Dig Read More »
I happen to see this uu_upload.pl download prompt error when installing phpmotion on a subfolder. This is because Apache doesn’t understand this perl file in cgi-bin. Here is a fix which worked for me Create a .htaccess file in cgi-bin of the subfolder and add the entry Options +ExecCGI AddHandler cgi-script .pl This error can
uu_upload.pl download prompt Read More »
Hi Its common that video files are not getting converted into flv format for streaming. This can be caused due to deprecated option that is still used for mencoder in the scripts of phpmotion and clipshare. All you have to do is to replace the existing options with the latest one in the convertor.php file
video not converting Read More »
As you are aware nginx don’t read .htaccess rewrite rule nginx has its own rewrite rule. WordPress has already embraced nginx, wordpress.com works with nginx. There will be problems if you enable permalink option in wordpress nginx. Here is the workaround for it. You can find permalink option at Login as wordpress admin Click on
nginx wordpress permalink Read More »
startup-scripts-for-nginx that can be used for centos. Save the below code in a file named nginx in /etc/init.d/. Chmod its permission to 755. Also make sure that you give the correct path for your conf file in NGINX_CONF_FILE and of the nginx binary location. #!/bin/sh # # nginx – this script starts and stops the
startup scripts for nginx Read More »
I decided to compile my own kernel 2.6 compile steps for my centos. Here are the steps I have followed and which worked without any errors. Goto kernel.org for the list of kernel source available http://kernel.org/pub/linux/kernel/v2.6/ Download the one you like to the directory /usr/src If you are using wget and by chance you got
kernel 2.6 compile steps Read More »
PostgreSQL is an object-relational database management system (ORDBMS) based on POSTGRES, Version 4.2, developed at the University of California at Berkeley Computer Science Department. POSTGRES pioneered many concepts that only became available in some commercial database systems much later with PostgreSQL Command. PostgreSQL is an open-source descendant of this original Berkeley code. It supports a
PostgreSQL Command line Tips Read More »
To all those who needs uninterrupted webservice here is an article that describes basic settings of how Linux Fail-over Clustering can be done using linux servers . For this purpose we can use any Red-Hat distribution and another utility called Heartbeat. The heartbeat service provides the basic functions required for the HA system. In a
Linux Fail-over Clustering Read More »
Now I am going introduce you to a set of commands & System Admin Tools that may come handy FIND [bash]find -perm 777 -type d -exec chmod 755 {} \; #Command to change all the folders under present directory with 777 to 755 find -perm 755 -type f -exec chmod 644 {} \; #Command to
System Admin Tools Part 11 Read More »
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