How to setup haproxy on oracle linux

 

How to setup haproxy on oracle linux

Setting up HAProxy on Oracle Linux is straightforward. Here's a step-by-step guide to help you get started:

Step 1: Install HAProxy

1. Update your system: 

sudo yum update -y

2. Install HAProxy: 

sudo yum install haproxy -y

 

Step 2: Configure HAProxy

1. Open the HAProxy configuration file:

 

sudo vi /etc/haproxy/haproxy.cfg

 

2. Basic Configuration: Here's a simple example of a configuration that balances traffic between two web servers:

global

    log /dev/log    local0

    log /dev/log    local1 notice

    maxconn         2000

    user            haproxy

    group           haproxy

    daemon

 

defaults

    log     global

    mode    http

    option  httplog

    timeout connect 5000ms

    timeout client  50000ms

    timeout server  50000ms

 

frontend http_front

    bind *:80

    default_backend http_back

 

backend http_back

    balance roundrobin

    server web1 192.168.1.101:80 check

    server web2 192.168.1.102:80 check

• frontend: Defines where HAProxy listens for incoming connections.
• backend: Specifies the servers to which traffic should be forwarded.

Adjust the server entries with the actual IP addresses of your backend servers.

Step 3: Start and Enable HAProxy

1. Start the HAProxy service:

 

sudo systemctl start haproxy

 

2. Enable HAProxy to start on boot:

 

sudo systemctl enable haproxy

3. Check the status:

 

sudo systemctl status haproxy

 

Step 4: Configure Firewall (if applicable)

If you have a firewall running (like firewalld), allow traffic on port 80:

 

sudo firewall-cmd --permanent --add-port=80/tcp

sudo firewall-cmd --reload

Step 5: Test the Setup

1. Open a web browser and navigate to the IP address of your HAProxy server.
2. Monitor the logs or use tools like curl to check the response.

Step 6: Advanced Configuration (Optional)

You can further customize your HAProxy configuration with features like SSL termination, sticky sessions, or health checks depending on your requirements.

Troubleshooting

If you encounter issues:

• Check the HAProxy logs:

bash

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sudo tail -f /var/log/haproxy.log

• Ensure that backend servers are reachable from the HAProxy server.

That's it! You now have a basic HAProxy setup running on Oracle Linux. Let me know if you need any more help!