Get The Most From Your Redhat Linux Servers

AGIX Linux staff are experienced with all popular distributions of Linux. We work with Redhat Linux and those similar such as Fedora, CentOS and more.

Organizations typically decide on a single distribution to use within their business. When that distribution is Redhat, our staff are ready to help with a strong understanding of current best practices, strong training, and a history of hardening, supporting and maintaining Redhat Enterprise Linux systems.

See Our Blogs on Redhat, Fedora and CentOS Linux

Sudo Without a Password & Restricted Commands/Groups – CentOS and Redhat

All HowTo's Cyber-Security Linux Redhat, Fedora and CentOS Linux Ubuntu, Mint & Debian Linux
This article explains how to use SUDO without being prompted for the password. We can restrict which users and/or groups can do this. As root, edit the file “/etc/sudoers”. Add the line: agix ALL=(ALL) NOPASSWD: ALL The above means that the user “agix” can use sudo without being prompted for
October 09, 2013 | Andrew Galdes
Read More

Using Varnish to “Cap” Server Load – Redhat/CentOS

All HowTo's Linux Redhat, Fedora and CentOS Linux Web Servers
This article demonstrates how to Cap or Limit the load on a Web Server using Varnish. The idea here is to specify a timeout value which, if exceeded, the web surfer will be diverted to a customised error page. By adjusting the timeout value, the administrator can choose what kind
October 07, 2013 | Andrew Galdes
Read More

Install Cobbler on CentOS/Redhat

All HowTo's Linux Redhat, Fedora and CentOS Linux
This article explains the installation process for Cobbler on CentOS 6.4 64bit. Install Cobbler and the other services. TIP, you need the EPEL repo available: yum install cobbler* tftp* httpd Edit the “/etc/xinetd.d/tftp” file to enable the TFTPd service: service tftp { socket_type = dgram protocol = udp wait =
September 23, 2013 | Andrew Galdes
Read More

Varnish Cache as a Load Balancer on CentOS/Redhat

All HowTo's Linux Redhat, Fedora and CentOS Linux Web Servers
This article explains how to configure the Varnish Cache as a load balancer. In other words, you have two Web Servers with a Varnish server in-front of them. As illustrated below: Internet -> Varnish -> Web Server 1 -> Web Server 2 Varnish does it’s load balancing in a round-robin
September 12, 2013 | Andrew Galdes
Read More

Install Puppet Server & Client on Redhat & CentOS 6

All HowTo's Ansible & Terraform Linux Redhat, Fedora and CentOS Linux Web Servers
This article explains how to install the Puppet server (also known as the PuppetMaster) and client on a Redhat or CentOS server. Note that Puppet uses TCP ports 8140, 61613, and 443. First add the Puppet repo on both the puppet client and server systems. The following link has several
September 03, 2013 | Andrew Galdes
Read More

Configure Varnish Cache for Multiple Domains – CentOS/Redhat 6

All HowTo's Linux Redhat, Fedora and CentOS Linux Ubuntu, Mint & Debian Linux Web Servers
This article applies to Varnish 3. This article explains how to configure the Varnish Cache to cache for multiple domains on the same backend server. I’ve used CentOS 6.2 for this example. In this example, Varnish is listening on TCP port 80. The DNS “www” “A” record for the domains
September 03, 2013 | Andrew Galdes
Read More

Configure SNMP on CentOS for use with Nagios (monitor disk space)

All HowTo's Linux Redhat, Fedora and CentOS Linux Web Servers
This article explains how to configure SNMP for use with Nagios on a CentOS server. It’s assumed you already have Nagios installed but not necessarily configure to use SNMP to monitor a host. We use “Disk Space” monitoring in this article. For this article, i’ve used the following versions: 1.
July 03, 2013 | Andrew Galdes
Read More

Streaming Internet Music for Asterisk 10 “Music On Hold”

All HowTo's Linux Redhat, Fedora and CentOS Linux Ubuntu, Mint & Debian Linux
This article explains how to add Music On Hold (or MOH) for Asterisk 10. The music will be streaming from the Internet – in this case, the “ABC News Radio” channel/station. Note that the download of Internet radio data starts when someone goes on hold. And stops when they go
June 04, 2013 | Andrew Galdes
Read More

MySQL Database Replication Example

All HowTo's Linux MySQL & MariaDB Redhat, Fedora and CentOS Linux Ubuntu, Mint & Debian Linux
This article explains how to install MySQL 5.1 on Redhat/CentOS and configure replication to a slave MySQL server. In this article, the master host has the IP address “192.168.122.7” and the slave has IP address “192.168.122.6”. Remember to restart the MySQL server if and when you make changes to the
June 02, 2013 | Andrew Galdes
Read More

Need Help?

"*" indicates required fields

Our Team Is Made Up Of Australian Specialists

Need Help?

Click Here
Call Now Button