While installing the Nagios 4.0.2 from tarball I got this issue Error: Could not open command file ‘/usr/local/nagios/var/rw/nagios.cmd’ for update!. The problem was clearly stating about permission issue.Hence we have to only modify the permission and restart the nagios service. The problem was occurring when I was clicking on Re-schedule the next check of this…
In this post we will learn about how to change mysql default port number in linux.This is a simple tip but it has many benefits. Question: What are the benefits of changing the default port no. 3306 in mysql-server ? Answer: For security point of view we generally change the port no. of MySQL Server…
In this post we will learn safest method to remove softlink in linux. Softlink is also known as symbolic link which is special type of file provide the reference of file or directory with its absolute path.
How to upgrade Ubuntu 13.04 to 13.10 by command line In this post I am sharing a tip how to upgrade Ubuntu 13.04 to 13.10 by command line.In my last post about upgrading the Ubuntu 12.10 to 13.04 we have used the same command. Here the command is also applicable when you want to upgrade…
In this tutorial we will learn about how to setup CRAM-MD5 authentication for mailing in Owncloud version 5.0.12-0 in Ubuntu.Today I found that while sharing the link in Owncloud the recipient was not getting email. It was quite obvious I have to set the Mailer. I read the online documentation from owncloud and tried to…
In this tutorial we will learn about how to setup MySQL Master Slave replication in CentOS 6.4.In Master-Slave replication one database server (Master) can replicate the databases to one or more MySQL database Server(slave). The Slave server is not required to be connected always with Master Server, once slave server is up and when you…
In this tutorial we will learn how to install latest wordpress in CentOS 6.Installing the WordPress is quite easy but here we will create a database user which only has access to wordpress database.This practical is applied to VPS,Cloud Server,virtual server and dedicated server. Note: VPS,Cloud Server,virtual server are based on Virtualisation techninque We are…
This is a small tip to find mysql commands history without login into mysql server.When we login into MySQL server,generally we uses up and down arrow key to find the history of MySQL commands. Actually the MySQL commands history are saved in file called .mysql_history located in user’s home directory by which he/she logged into…
In this post we will learn about how to reindex lucene search in Owncloud 5.0.22. While working in Owncloud 5.0.22 our requirement was to reindex the lucene search. Overview: When a user placed a cursor and type some keyword ,bydefault it creates a directory lucene_index (absolute path is /path/of/owncloud_installed_dir/data/username/lucene_index ) . On writing the keyword…
In this post we will know how to rescan file system in Owncloud 5.x version.While working in owncloud I got the application called rescan but it was not working and I got a blank page.After exploring more into owncloud I got two ways to rescan the file system. Owncloud Version: 5.0.22 Method 1: Using console.php…
In this post we will learn easy and quick installation of VirtualBox 4.2.10 in Linux Mint Olivia. There are two ways to install any packages (1) Command line (2) Graphical (Using Software Manager) We mostly prefer to work in command line because it is faster as well as if there is any error it is…
In this post we will learn about quick installation of Google Chrome in Linux Mint 15 Olivia. As we know the Linux Mint 15 distro is based on Ubuntu 13.04 , hence apt-get and dpkg command can be run. To install the Google Chrome by using command line ,follow the given below steps Step 1:…
In this topic we will learn how to install and configure HAProxy 1.4.24 in CentOS 6.HAproxy is widely used Open Source tcp/http based loadbalancer.And many renowned company also using the HAProxy.Here in this tutorial we will install the latest stable HAProxy version 1.4.24 in CentOS 6.4. We recommend to install latest stable version 1.4.24, read…
In this tutorial we will learn simple steps to configure the static ip address in Ubuntu by using command line. It is always be a good practice to work on Linux or Unix system using command line.As a system admin we always prefer to work by using command line. Follow the given below steps to…
In this post I am sharing about how I mounted the NAS storage in owncloud to keep all users data in it. I checked the External Storage application of owncloud but here our requirement is we want to keep all data in NAS storage and user should not save anything in Owncloud Server’s disk. The…