vault backup: 2024-12-12 19:30:24

WORK & PROJECTS/Mol/Серверы/DOCS/Load Balancer.md

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+https://medium.com/@ajibudiono04/basic-configuration-load-balancer-using-debian-11-bullseye-c0da7047f426
+
+Load Balancer is a solution to stabilize traffic in the Network. Load Balancer works by distributing traffic to ensure servers are not overloaded.
+
+We can use a load balancer using Debian 11 (bullseye). in this example topology using 2 Web Servers.
+
+![[Pasted image 20241212175419.png]]
+
+1. First Step, We must install OS Debian 11 as Load Balancer
+2. Don’t forget to update and upgrade OS
+3. Login as Super User (root)
+
+```
+root@loadbalancer:/home/aji# apt-get update  
+root@loadbalancer:/home/aji# apt-get upgrade
+```
+
+4. Install HAProxy
+
+```
+ root@loadbalancer:/home/aji# apt-get install haproxy
+```
+
+5. Configure HAProxy in the file config “etc/haproxy/haproxy.cfg”
+
+```
+root@loadbalancer:/home/aji# nano /etc/haproxy/haproxy.cfg
+```
+
+6. Add Command to define Web Servers
+
+  
+```
+# Define frontend  
+frontend apache_front  
+        # Frontend listen port - 80  
+        bind *:80  
+        # Set the default backend  
+        default_backend    apache_backend_servers  
+        # Enable send X-Forwarded-For header  
+        option             forwardfor  
+  
+# Define backend  
+backend apache_backend_servers                                               
+        # Use roundrobin to balance traffic  
+        balance            roundrobin  
+        # Define the backend servers  
+        server             backend01 192.168.77.84:80 check  
+        server             backend02 192.168.77.85:80 check  
+```
+  
+
+7. Restart HA Proxy
+
+```
+root@loadbalancer:/home/aji# systemctl restart haproxy
+```
+
+8. Testing for ensure working normally to access to the Load Balancer (HAProxy)
+
+
+![[Pasted image 20241212175851.png|Server1]]
+
+
+![[Pasted image 20241212175929.png|Server2]]