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. 

Configure Gmail SMTP Relay

SMTP stands for Simple Mail Transfer Protocol, lets you send email messages through your email account using your existing email service. This email service is subject to your interest. It could be any like: Gmail Relay, Snail Mail etc.

In this post we are going to configure Gmail Relay to send emails.

Nagios HTTP WARNING: HTTP/1.1 403 Forbidden Solved

I setup a nagios server and after the setup, I encounter a warning "Nagios HTTP WARNING: HTTP/1.1 403 Forbidden".

Nagios Server Configuration for different hosts

In our previous posts, we learn how to install nagios, how to install NRPE or NSClient++. Now let's have a look on configuring hosts in nagios in best practical way Nagios Server Configuration for different hosts.

It will be good practice if we configure the client hosts in groups on Nagios Server.

Steps to Group clients servers:

1. Create locations for host configuration files:

In our configuration, we are grouping servers in 4 main categories:

Nagios NRPE Installation

In previous article, we learn how to install nagios (monitoring tool). Now we'll learn how to install nagios agent on the system, which needs to be monitored in nagios. This Agent tool is known as Nagios NRPE (for linux). To monitor system having Windows operating system, we need to install NSClient++. NSClient++ is very easy to install as it is simply a .exe file. Here are the steps to install NRPE plugin (agent) on linux machine: