Linux

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A Beginner's Guide To btrfs

A Beginner's Guide To btrfs

This guide shows how to work with the btrfs file system on Linux. It covers creating and mounting btrfs file systems, resizing btrfs file systems online, adding and removing devices, changing RAID levels, creating subvolumes and snapshots, using compression and other things. btrfs is still marked as experimental, but all those features make it a very interesting and flexible file system that should be taken into consideration when you look for the right file system.

How To Clone And Simulate Network Devices On Linux

How To Clone And Simulate Network Devices On Linux

This guide shows how to clone and simulate devices using free and commonly used tools. This could be helpful while conducting network stress-tests, network audits, etc.

Remote MySQL Performance And Query Monitoring

Remote MySQL Performance and Query Monitoring

There may be the situation that you have to monitor a MySQL server remotely. There are some linux tools to do performance and query monitoring locally, and these tools can also used to monitor remotely - but only unencrypted ! Also often MySQL is only listening on the loopback interface, so it is even not reachable remotely over the net (which is very good seen from the security viewpoint). But there is an easy solution in the Linux world.

Using Wget With FTP To Download/Move Web Sites Recursively

Using Wget With FTP To Download/Move Web Sites Recursively

Sometimes you need to move a web site from one server to another. Instead of downloading the web site from the old server to your PC via FTP and uploading it from your PC to the new server, it would save a lot of time to simply copy the web site from one server to the other. This tutorial explains how to use Wget to download/move a web site from one server to the other via FTP.

Running A Small Business Server With ClearOS 6.3.0 (Community Edition)

Running A Small Business Server With ClearOS 6.3.0 (Community Edition)

This guide shows how you can install and run a Small Business Server with ClearOS 6.3.0 (Community Edition). With ClearOS, you can run various services (such as a file- and print server, a web proxy and content filter, a mail server, etc.) in your local network and manage them through an easy web interface. ClearOS provides apps for each of these tasks from its marketplace - many of them are free, some of them have to be paid for. ClearOS Community is open-source and free. There's also a professional version available for which you have to pay, but which in return provides better support, better tested apps and updates, etc.

Sharing Terminal Sessions With Tmux And Screen

Sharing Terminal Sessions With Tmux And Screen

tmux and GNU Screen are well-known utilities which allow multiplexing of virtual consoles. Using either, it is possible to start a session, detach, move to a different machine and resume the session in uninterrupted progress. It's also possible to use these tools to share a single session between more than one user at the same time.

Using Fail2ban To Block Wrong ISPConfig Logins

Using Fail2ban To Block Wrong ISPConfig Logins

In this tutorial, we'll write an ISPConfig plugin to log failed logins to syslog, filter those entries using rsyslogd and add a fail2ban rule to block malicious users' IPs.

How To Benchmark Your System (CPU, File IO, MySQL) With sysbench

How To Benchmark Your System (CPU, File IO, MySQL) With sysbench

sysbench is a benchmark suite which allows you to quickly get an impression about system performance which is important if you plan to run a database under intensive load. This article explains how to benchmark your CPU, file IO, and MySQL performance with sysbench.

Create And Restore Partition Images With Partimage

Create And Restore Partition Images With Partimage

Backups are usually made in one of two ways - either file-based which means that single files are backed up, often via synchronization and on an external disk, or image-based which means that a whole partition is stuffed into an image file that can be restored on the partition, containing everything there was on it. This tutorial covers image-based backups using Partimage from a live desktop environment.

How To Manage Your Servers With Rex - Best Practice

How To Manage Your Servers With Rex - Best Practice

(R)?ex is a server orchestration and configuration management tool. With (R)?ex you can manage all your boxes from a central point through the complete process of configuration management and software deployment. In this guide I will show you with the help of a project how to use (R)?ex to configure your servers and how to deploy software.

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