Learn how to set up Docker Image HAproxy Centos. Our Docker Support team is here to help you with your questions and concerns.

Docker Image HAproxy Centos | Set Up Guide

Docker is a lightweight and portable solution for packaging, distributing, and running applications in containers.

Today, we are going to take a look at setting up HAProxy inside a Docker container.

1. To begin with, we have to create a `Dockerfile` in a new directory. This file acts as the blueprint for building our Docker image. Below are the contents of the Dockerfile:

   # Use the official CentOS base image
FROM centos:latest
# Install HAProxy
RUN yum -y update && yum -y install haproxy && yum clean all
# Copy the HAProxy configuration file to the image
COPY haproxy.cfg /etc/haproxy/haproxy.cfg
# Expose HAProxy port
EXPOSE 80
# Start HAProxy
CMD ["haproxy", "-f", "/etc/haproxy/haproxy.cfg"]

2. Next, create a HAProxy configuration file named `haproxy.cfg` in the same directory as the Dockerfile. Here’s a basic example to get you started:

   global
log /dev/log local0
log /dev/log local1 notice
chroot /var/lib/haproxy
stats socket /run/haproxy/admin.sock mode 660 level admin
stats timeout 30s
user haproxy
group haproxy
daemon
defaults
log global
mode http
option httplog
option dontlognull
timeout connect 5000
timeout client 50000
timeout server 50000
frontend myfrontend
bind *:80
mode http
default_backend mybackend
backend mybackend
mode http
server webserver1 webserver1_ip:webserver1_port
server webserver2 webserver2_ip:webserver2_port


   Remember to replace `webserver1_ip`, `webserver1_port`, `webserver2_ip`, and `webserver2_port` with the actual IP addresses and ports of the backend servers.
3. Then, open a terminal and go to the directory containing the Dockerfile and HAProxy configuration file. Next, run this command:

   docker build -t my-haproxy

   This command builds a Docker image named `my-haproxy` based on the Dockerfile and configuration files in the current directory.
4. Once the image is built, we can run a container from it:

   docker run -d -p 8080:80 --name my-haproxy-container my-haproxy

   This command runs the HAProxy container in detached mode, mapping port 8080 on our host machine to port 80 on the container.

With the above steps, we can easily set up an HAProxy instance running on CentOS inside a Docker container. Let us know in the comments if you need further help.

[Need assistance with a different issue? Our team is available 24/7.]

Conclusion

In brief, our Support Experts demonstrated how to set up HAProxy inside a Docker container.