Installing Haproxy On Windows

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Install the haproxy package on each front-end server: # yum install haproxy Edit /etc/haproxy/haproxy.cfg to configure HAProxy on each server. See Section 17.2.1, “About the HAProxy Configuration File”.

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Choose either the community-driven HAProxy Kubernetes Ingress Controller or the HAProxy Enterprise Kubernetes Ingress Controller, which includes additional security features and is backed by our authoritative support engineers. Then, follow the installation steps for your Kubernetes distribution.

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This article is written to prepare high availability of a website. This can also be used by those who want their website to be available to their clients or users with high availability servers and to share between their servers. It is a free and open source application used as a TCP/HTTP load balancer which will distribute web traffic to multiple servers and improves performance and reliability of the web server.

Installation

Assume that load balancer HA proxy server IP address is http://192.167.57.150

HAproxy Server details

OS: Centos 6.7, IP Address: 192.168.57.150

WebServer1

OS: Centos 6.7, IP Address: 192.168.57.147

WebServer2

OS: Centos 6.7, IP Address: 192.168.57.148

We need to install the Apache on both the web servers, i.e., 192.168.57.151 and 192.168.57.152.

After installation, please access the Apache from web browser http://your-server-ip-address

Installing HAProxy Server

Open the host files and add the below lines in all 3 servers (HAproxy Load balancer, webserver1, webserver2)

Now, you need to enable the HAproxy Logs to identify the problems for your future debugging

Add these below lines to enable the logging

Now create a haproxy.conf in /etc/rsyslog.d/ folder to create log files

Add the below line to create the file

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Restart the rsyslog services to update the changes we made

Configuring HAproxy global settings

We have to provide the details of both the web servers as front-end and back-end servers in case of failure.

We need to restart the services and make the changes effective.

To start the service automatically, use the below command

To check the autostart –

After the services, re-start so that, we can access the load balancer on http://192.168.87.150:/stats

For testing the HAproxy load balancer, we will have to create an index.html file in both web servers with below code.

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Create an index.html file in the webserver1 with the bellow code.

Create an index.html file in webserver2 with the bellow code.

Now access the haproxy server IP http://192.168.57.150

By default, you can see the page of webserver 1

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Webserver1

Now, test the load balance by going to webserver 1 and stop the HTTPd server

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Then, access the haproxy server IP, http://192.168.57.150

Now, you will see the web page of webserver2 automatically

Webserver2

To verify, you can access the HAproxy load balancer statistics page http://192.168.87.150/stats

HAproxy

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Conclusion

After the configuration, you should be able to get your website without interruption even if one of the servers is down or unavailable. In the same way, we can also set up a HAproxy for Apache. You can also observe that, Webserver1 is not accessible or Down in the HAproxy load balancer statistics page by configuring the above as shown. You can also add any number of servers depending upon the requirement.

The software described in this documentation is either in Extended Support or Sustaining Support. See https://www.oracle.com/us/support/library/enterprise-linux-support-policies-069172.pdf for more information.
Oracle recommends that you upgrade the software described by this documentation as soon as possible.

To install HAProxy:

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Install the haproxy package on each front-end server:
Edit /etc/haproxy/haproxy.cfg to configure HAProxy on each server. See Section 17.2.1, “About the HAProxy Configuration File”.
Enable IP forwarding and binding to non-local IP addresses:
Enable access to the services or ports that you want HAProxy to handle.
For example, to enable access to HTTP and make this rule persist across reboots, enter the following commands:
Enable and start the haproxy service on each server:
If you change the HAProxy configuration, reload the haproxy service: