Monthly Archives: February 2017

How To Implement SSL Termination With HAProxy on Ubuntu 14.04

Introduction HAProxy, which stands for High Availability Proxy, is a popular open source software TCP/HTTP Load Balancer and proxying solution which can be run on Linux, Solaris, and FreeBSD. Its most common use is to improve the performance and reliability of a server environment by distributing the workload across multiple servers (e.g. web, application, database).… Read More »

CentOS / RHEL 6 : How to disable IPv6

Post describes procedure to disable IPv6 on CentOS/RHEL 6. There are 2 ways to do this : 1. Disable IPv6 in kernel module (requires reboot) 2. Disable IPv6 using sysctl settings (no reboot required) Method 1 : using /etc/modprobe.d/ipv6.conf 1. Check if IPV6 is enabled: # ifconfig |grep inet6 inet6 addr: fe80::d6be:d9ff:fe99:5a77/64 Scope:Link inet6 addr:… Read More »

CentOS / RHEL 7 : How to disable IPv6

Post describes procedure to disable IPv6 on CentOS/RHEL 7. There are 2 ways to do this : 1. Disable IPv6 in kernel module (requires reboot) 2. Disable IPv6 using sysctl settings (no reboot required) To verify if IPv6 is enabled or not, execute : # ifconfig -a | grep inet6 inet6 fe80::211:aff:fe6a:9de4 prefixlen 64 scopeid… Read More »

How To Set Up an NFS Mount on CentOS 6

Setup An NFS mount is set up between at least two servers. The machine hosting the shared network is called the server, while the ones that connect to it are called ‘clients’. This tutorial requires 2 servers: one acting as the server and one as the client. We will set up the server machine first,… Read More »

How To Install Java on CentOS and Fedora

Introduction This tutorial will show you how to install Java on CentOS 7 (also 5, 6, 6.5), Fedora 20, and RHEL. Java is a popular software platform that allows you to run Java applications and applets. The installation of the following versions of Java are covered: OpenJDK 7 OpenJDK 6 Oracle Java 8 Oracle Java… Read More »