How to Install HAProxy on OpenSUSE Latest

In this tutorial, we will show you how to install HAProxy on OpenSUSE Latest. HAProxy is an open-source software that provides high availability, load balancing, and proxying for TCP and HTTP-based applications. It is widely used to distribute incoming traffic across multiple servers to improve performance and reliability.

Prerequisites

Before installing HAProxy on OpenSUSE Latest, make sure you meet the following requirements:

• You have root privileges on your server.
• You have an internet connection to download HAProxy from its official website.
• Basic knowledge of Linux commands and package management.

Step 1: Update the System

Before installing HAProxy, update your system to the latest packages and dependencies available. Type the following command in the terminal to update the system:

sudo zypper dup

Step 2: Install HAProxy

Now you can install the HAProxy package using the following command:

sudo zypper in haproxy

Wait for the installation to complete.

Step 3: Configure HAProxy

By default, the HAProxy configuration file is located in /etc/haproxy/haproxy.cfg. You can use any text editor of your choice to edit the configuration file.

sudo nano /etc/haproxy/haproxy.cfg

The basic configuration file contains a sample backend and frontend configuration for the HTTP and HTTPS protocols. You can modify these configurations as per your requirements.

frontend http-in
        bind *:80
        mode http
        default_backend servers

backend servers
        mode http
        balance roundrobin
        server webserver1 192.168.1.10:80 check
        server webserver2 192.168.1.11:80 check

frontend https-in
        bind *:443 ssl crt /etc/haproxy/certs/example.com.pem
        mode https
        default_backend https-servers

backend https-servers
        mode https
        balance roundrobin
        server webserver1 192.168.1.10:443 ssl verify none
        server webserver2 192.168.1.11:443 ssl verify none

Once you have made the required changes to the configuration file, save and close it.

Step 4: Start HAProxy

After editing the HAProxy configuration file, it's time to start HAProxy. You can start HAProxy using the following command:

sudo systemctl start haproxy

To check if HAProxy is running, use the following command:

sudo systemctl status haproxy

If everything is fine, you will see the output similar to the following:

● haproxy.service - HAProxy Load Balancer
     Loaded: loaded (/usr/lib/systemd/system/haproxy.service; enabled; vendor preset: disabled)
     Active: active (running) since Thu 2021-05-10 13:08:54 EDT; 5s ago
   Main PID: 16560 (haproxy)
     CGroup: /system.slice/haproxy.service
             ├─16560 /usr/sbin/haproxy-systemd-wrapper -f /etc/haproxy/haproxy.cfg -p /run/haproxy.pid
             ├─16561 /usr/sbin/haproxy -Ws -f /etc/haproxy/haproxy.cfg -p /run/haproxy.pid - sf 16562
             └─16562 /usr/sbin/haproxy -Ws -f /etc/haproxy/haproxy.cfg -p /run/haproxy.pid -sf 16564
...

Step 5: Enable HAProxy at Startup

To automatically start HAProxy at system boot, use the following command:

sudo systemctl enable haproxy

Conclusion

In this tutorial, you learned how to install and configure HAProxy on OpenSUSE Latest. You also learned how to start and enable HAProxy to run at system boot time. We hope that this tutorial helped you to set up HAProxy on your OpenSUSE system.

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