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How to Install Nagios 4.3.4 on RHEL / CentOS
Nagios is an awesome Open Source monitoring tool, its provides you more comprehensive monitoring environment to always keep an eye on your all machines / networks whether you are in a your data center or just your small labs. With Nagios, you can monitor your remote hosts and their services remotely on a single window. […]
Useful MySQL Commands
Database with size SELECT table_schema “DB Name”, Round(Sum(data_length + index_length) / 1024 / 1024, 1) “DB Size in MB” FROM information_schema.tables GROUP BY table_schema; Create a database. mysql> create database [databasename]; List all databases on the server. mysql> show databases; Switch to a database. mysql> use [db name]; To see all the tables in the […]
Securing Asterisk IP-PBX with Fail2Ban
What is Fail2Ban? Any service that is exposed to the internet is susceptible to attacks from malicious parties. If your service requires authentication, illegitimate users and bots will attempt to break into your system by repeatedly trying to authenticate using different credentials. A common example of this is with SSH, which will be the subject […]