How to Setup High- Availability Load Balancer with 'HAProxy' to Control Web Server Traffic. HAProxy stands for High Availability proxy. It is a Free and open source application written in C programming Language. HAProxy application is used as TCP/HTTP Load Balancer and for proxy Solutions. The most common use of the HAProxy application is to distribute the workload across multiple servers e. The highly efficient and fast application is used by many of the world’s reputed organization which includes but not limited to – Twitter, Reddit, Git. Hub and Amazon. It is available for Linux, BSD, Solaris and AIX platform. Install HAProxy Load Balancer in Linux. In this tutorial, we will discuss the process of setting up a high availability load balancer using HAProxy to control the traffic of HTTP- based applications (web servers) by separating requests across multiple servers. For this article, we’re using the most recent stable release of HAProxy version i. December 3. 1st 2. And also we’re using Cent. OS 6. 5 for this setup, but the below given instructions also works on Cent. To run: require libcurl-dev or libcurl-devel(on rpm linux based) $ git clone https://github.com/CoolerVoid/0d1n/ need libcurl to run $ sudo apt-get install libcurl-dev. Standard Modules. The following modules are included as standard with release 1.850 of Webmin. You can also download and re-install any modules from this page that. OS/RHEL/Fedora and Ubuntu/Debian distributions. My Environment Setup. Here our load- balancer HAProxy server having hostname as websrv. IP address 1. 92. HAProxy Server Setup. Operating System : Cent. OS 6. 5. IP Address : 1. Hostname : websrv. Client Web Servers Setup. The other four machines are up and running with web servers such as Apache. Web Server #1 : Cent. OS 6. 5 [IP: 1. 92. Web Server #2 : Cent. OS 6. 5 [IP: 1. 92. Web Server #3 : Cent. OS 6. 5 [IP: 1. 92. Web Server #4 : Cent. OS 6. 5 [IP: 1. 92. Step 1: Installing Apache on Client Machines. First we have to install Apache in all four server’s and share any one of site, for installing Apache in all four server’s here we going to use following command.# yum install httpd [On Red. Hat based Systems]. On Debian based Systems]. After installing Apache web server on all four client machines, you can verify anyone of the server whether Apache is running by accessing it via IP address in browser. Check Apache Status. Step 2: Installing HAProxy Server. In most of the today’s modern Linux distributions, HAPRoxy can be easily installed from the default base repository using default package manager yum or apt- get. For example, to install HAProxy on RHEL/Cent. OS/Fedora and Debian/Ubuntu versions, run the following command. Here I’ve included openssl package too, because we’re going to setup HAProxy with SSL and NON- SSL support.# yum install haproxy openssl- devel [On Red. Hat based Systems]. On Debian based Systems]. Note: On Debian Whezzy 7. Next, update the repository database and install HAProxy.# apt- get update. Step 3: Configure HAProxy Logs. Next, we need to enable logging feature in HAProxy for future debugging. Open the main HAProxy configuration file ‘/etc/haproxy/haproxy. Next, follow the distro- specific instructions to configure logging feature in HAProxy. On RHEL/Cent. OS/Fedora. Under #Global settings, enable the following line. On Ubuntu/Debian. Under #Global settings, replace the following lines,log /dev/log local. With,log 1. 27. Enable HAProxy Logging. Next, we need to enable UDP syslog reception in ‘/etc/rsyslog. HAProxy under /var/log directory. Open your your ‘rsyslog. Uncommnet Mod. Load and UDPServer. Run, Here our Server will listen to Port 5. Provides UDP syslog reception. UDPServer. Run 5. Configure HAProxy Logging. Next, we need to create a separate file ‘haproxy. Append following line to the newly create file. HAProxy Logs. Finally, restart the rsyslog service to update the new changes.# service rsyslog restart. AIX Install packages, upgrade, patching commands.
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November 2017
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