Installing FFMPEG in CentOS7

FFMPEG is a leading solution to record, convert and stream audio and video files in Linux. We often use FFMPEG as a library in PHP or Python. In this step by step article we will know how to install and configure FFmpeg on CentOS 7 as it not as simple as ‘yum install *’.

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Netwatch overview

Netwatch allows detailed traffic monitoring of your CentOS system. It shows the total speed at which data transfer is happening for each connection from local system to remote systems. To check the transfer speed from an interface, we can use the following command.

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Top commands to monitor CentOS 7 server

Monitoring of your CentOS installation is one of key tasks for every system administrator. They should know how to maintain their VPS systems, dedicated servers to avoid any issues. Below we will discuss top commands to monitor CentOS.

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GUI network tools in CentOS 6

While working in CentOS 7 we feel ourselves comfortable with ‘nmtui’ – a killer tool which provides a text interface to configure networking by controlling NetworkManager (in GUI interface).

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Server graceful reboot and shutdown

Graceful reboots and shutdowns are existing for soft closing of all write-to-disk operations. There are many OS critical write operations, for example MySQL. If you will apply hard reset you may get corruption databases in result. To avoid all these problems we recommend to use graceful reboot. The last thing every system administrator want to do is end up with corrupted data upon reboot and server databases malfunction.

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Working with ID RSA under Mac OS X

You may request to provide for you RSA keys instead of passwords for dedicated servers and VPS instances, you ordered from us. This way of authorization is secure for most of operations and we basically recommend to use pair RSA keys.

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Mail logs in CentOS

We use maillogs when a mail problem just happened. In this case you can usually tail the log and see all the actions recorded in a file and investigate the errors. All logs are very important, but mail log is the top of them.

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BIND DNS down and not starting

BIND or named is one of the most widely used Domain Name System (DNS) service on Linux Servers. What is BIND? It’s an acronym which breaks to: BIND = Berkeley Internet Name Domain. This server software consists of many components, such as nameserver daemon (named) and a number of utilities (e.g. dig, host, named-checkconf, named-compilezone, dnssec-signzone, etc.) and the libraries (e.g. libbind).

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How to change the default SSH port 22

The Secure Shell (SSH) protocol by default uses port 22. Accepting this default port does not make your OS installation insecure. But changing this SSH port will do a significant variance in security. It will stop many automated attacks and in fact means a bit harder to guess which port SSH is accessible from.

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