Apache : James - Generating Users list

We have gone through about James server in previous post. In this post, we'll see how to generate user list from James Server.
James server provides a very good utility to check the users list on the server. Either we can see the user list on the console or we can redirect the userlist in any text file.  This article contains the steps to generate the user list from James server:

Apache: James Server

The Apache Java Mail Server Version 3.0 is a 100% pure Java SMTP, IMAP4 and POP3 Mail server designed to be a complete and portable enterprise mail engine solution. Apache James Server is based on currently available open protocols. 
Advantages
a. Standard

• 100% pure Java Mail server designed to be a complete and portable enterprise mail engine solution.
• Supports currently available IETF protocols, including SMTP, LMTP, POP3 and IMAP4.
• Apache James Server is able to store user and message data either in a file-system (Maildir), any JPA-compatible database and even JCR, allowing fast, reliable, even real-time replicated storage.
• Provides a powerful, flexible mail application engine through support for the Apache Mailet API. With its Mailet pipeline architecture, Apache James Server can be used not only to provide standard e-mail services, but also to implement custom e-mail applications.

Ubuntu: Segmentation fault (core dumped)

Segmentation fault: Generally such kind of errors are caused by addressing non-existent/allocated memory location. Today I encountered this error while executing "apt-get install" command.

   root@gh008:~# apt-get install binutils
   Segmentation fault (core dumped)

 

I googled around for this issue and finally got two solution for this problem. 

MySQL: Database Backup and Restore Using Command Line

MySQL, one of the most commonly & widely used database in world for web applications. Its popularity for use with web applications is closely tied to the popularity of PHP, which is often combined with MySQL. Several high-traffic web sites use MySQL for its data storage and logging of user data, including Flickr, Facebook, Wikipedia, Google, Nokia and YouTube.

MySQL provide a great command line utility to take backup of your MySQL database and restore it. mysqldump command line utility is available with MySQL installation (bin directory) that can be used to take backup of databases and perform various task using command line. 

MySQL Master Slave Replication

MySQL replication is a process that allows us to easily maintain multiple copies of a MySQL data. MySQL data get automatically copied from a master to a slave database. This concept is helpful for many reasons including 
a. Automatically backing up for the data.
b. Providing alternate database server if master server get crashed somehow.
To check the replication status in Master Slave environment (MySQL). Just need to follow these steps:

Steps to work with GIT for dummies

Today I start working with BitBucket (GIT) and found it bit difficult in comparison to SVN. I  have to read lots of documentations to work with GIT and finally I succeed in it. But I made a note of all the steps for the beginners. Follow these steps and play with GIT.

Nagios: Unable to check HTTPS service using check_http

Nagios is a powerful IT infrastructure monitoring solution available in market. It provides monitoring graphically. I installed Nagios Core on a server and after the completion of nagios configuration, I checked that Nagios is not able to ping the host on which https is enabled.