Category Archives: Linux (Ubuntu)

How to install ProFTPD with TLS on CentOS 7.2

Zabihah Halal Vitamins
How to install ProFTPD with TLS on CentOS 7.2
This tutorial describes the installation and configuration of ProFTPD on a CentOS 7.2 Server. ProFTPD is an FTP daemon for Unix and Linux operating systems and distributed under the GNU Public License (GPL).

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How to configure PureFTPd and FileZilla to use TLS sessions on CentOS 7.2

Zabihah Halal Vitamins
How to configure PureFTPd and FileZilla to use TLS sessions on CentOS 7.2
This article explains how to configure PureFTPd to use TLS sessions on a CentOS 7.2 server. Plain FTP is an insecure protocol because all passwords and all data are transferred in clear text. By using TLS, the whole communication can be encrypted, thus making FTP much more secure.

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Server monitoring with Munin and Monit on CentOS 7.2

Zabihah Halal Vitamins
Server monitoring with Munin and Monit on CentOS 7.2
In this article, I will describe how you can monitor your CentOS 7.2 server with Munin and Monit. Munin produces nifty little graphics about nearly every aspect of your server (load average, memory usage, CPU usage, MySQL throughput, eth0 traffic, etc.) without much configuration, whereas Monit checks the availability of services like Apache, MySQL, Postfix and takes the appropriate action such as a restart if it finds a service is not behaving as expected. The combination of the two gives you full monitoring: graphics that lets you recognize current or upcoming problems (like “We need a bigger server soon, our load average is increasing rapidly.”), and a watchdog that ensures the availability of the monitored services.

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FTP server with PureFTPd, MariaDB and Virtual Users (incl. Quota and Bandwidth Management) on CentOS 7.2

Zabihah Halal Vitamins
FTP server with PureFTPd, MariaDB and Virtual Users (incl. Quota and Bandwidth Management) on CentOS 7.2
This document describes how to install a PureFTPd server that uses virtual users from a MariaDB (MySQL compatible) database instead of real system users. This is much more performant and allows to have thousands of FTP users on a single machine. In addition to that, I will show the use of quota and upload/download bandwidth limits with this setup. Passwords will be stored encrypted as MD5 strings in the database.

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Using ATA Over Ethernet (AoE) on CentOS 7 (Initiator and Target)

Zabihah Halal Vitamins
Using ATA Over Ethernet (AoE) on CentOS 7 (Initiator and Target)
This guide explains how you can set up an AoE target and an AoE initiator (client), both running CentOS 7. AoE stands for “ATA over Ethernet” and is a storage area network (SAN) protocol which allows AoE initiators to use storage devices on the (remote) AoE target using normal ethernet cabling. “Remote” in this case means “inside the same LAN” because AoE is not routable outside a LAN (this is a major difference compared to iSCSI). To the AoE initiator, the remote storage looks like a normal, locally-attached hard drive.

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High-Availability Storage with GlusterFS on CentOS 7 – Mirror across two storage servers

Zabihah Halal Vitamins
High-Availability Storage with GlusterFS on CentOS 7 – Mirror across two storage servers
This tutorial shows how to set up a high-availability storage with two storage servers (CentOS 7.2) that use GlusterFS. Each storage server will be a mirror of the other storage server, and files will be replicated automatically across both storage servers. The client system (CentOS 7.2 as well) will be able to access the storage as if it was a local filesystem. GlusterFS is a clustered file-system capable of scaling to several peta-bytes.

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Setting Up an NFS Server and Client on CentOS 7.2

Zabihah Halal Vitamins
Setting Up an NFS Server and Client on CentOS 7.2
This guide explains how to set up an NFS server and an NFS client on CentOS 7. NFS stands for Network File System; through NFS, a client can access (read, write) a remote share on an NFS server as if it was on the local hard disk.

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How to determine Linux guest VM virtualization technology

How to determine Linux guest VM virtualization technology

I have a cloud-based virtual machine running Ubuntu and CentOS Linux server. It may or may not be virtualized. How do I determine what kind of virtualization technology (VMWARE/ KVM/ XEN/ VirtualBox/ Container/ lxc/Hyper-V etc.) a Linux guest system running on? How do I find out the virtualization type of a CentOS 7 Linux VPS?
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