HOW TO:CONFIGURE HA-PROXY SERVER (LOAD BALANCER) 

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Those are hostname already set in 3 different virtual machines running in KVM.

You can join me on my whatsapp group for quick free queries and solution chat.whatsapp.com/E96jXVnZacM8MzffHKJkpv Mention this question in group by refering this video

Good question.

Answer is HA proxy is anle to hamdle concurrent requests in millions because it is wprking as a proxy only. And you can vertically scale the server amd perform some OS level tuning to boost the performance Refer to below doc www.google.com/amp/s/www.freecodecamp.org/news/how-we-fine-tuned-haproxy-to-achieve-2-000-000-concurrent-ssl-connections-d017e61a4d27/amp/

You can use HA proxy server right behind the NLB or load balancer and you can use some service discovery to discover your backend resources and map from ha proxy

@@mohitguptaji the thing is fargate ips keep on changing due to which my application connection is breaking. I was suggested to use reverse proxy with fixed ip so that all fargate containers can send and receive request through this reverse proxy server

Can you share you screenshot error on my WhatsApp group which you joined and left. chat.whatsapp.com/E96jXVnZacM8MzffHKJkpv

Majour traffic would come to LB and it will distributed to backend servers half half

@@mohitguptaji thank you for replying. sir main outbound data xfer ka pooch raha hu. Load balancing server pe calculate hoga ya webserver pe. Example ke liye agar 10mb file download karni hai to outbound traffic server a/b pe calculate hoga ya balancing server pe? Ya fir load balancing server request ko sirf redirect karya hai?

@@unauthorizedaccess8062 if your a,b backend servers are on private network then charge would be very less. The main data transfer cost would be on LB because it will serve the file directly to client

And hope you liked the video and subscribe the channel it motivate me to upload more intresting videos

@@mohitguptaji thank you very much. And yes, I will subscribe.

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I have setup servera amd serverb dns in /etc/hosts file

And localhost is the haproxy itself

You must be doing something wrong can you share the errors you are getting so that can look into it

@@mohitguptaji Sep 03 11:17:01 HA-Proxy1 haproxy-systemd-wrapper[2382]: [ALERT] 246/111701 (2383) : Starting frontend apiserver: cannot bind socket [0.0.0.0:7443] Sep 03 11:17:01 HA-Proxy1 haproxy-systemd-wrapper[2382]: [ALERT] 246/111701 (2383) : Starting frontend dashboard: cannot bind socket [0.0.0.0:30000] Sep 03 11:17:01 HA-Proxy1 haproxy-systemd-wrapper[2382]: [ALERT] 246/111701 (2383) : Starting proxy stats: cannot bind socket [0.0.0.0:1936]

@@ramanpreet2686 3 diffetent ports 30000,7443 and other? Why 3 different port .

@@mohitguptaji as per the requiremnet. Earlier the haproxy set up was running fine including these three ports. but not now. I haven't made any change to it.

@@ramanpreet2686 need to check on remote i guess

Yeah did you follow all the steps correctly , and are you doing this on personally or on any production environment

@@mohitguptaji I already follow your tutorial fully. I do this on personal my LAB. I have 2 node backend server and 1 load balancer. But all network is in diferent subnet. Is this work in diferent subnet for HAproxy? Help me. If you want to remote my pc.. please

@@ITLAB91 doesnt matter if submet is different , they must be reachable . I can help you here only if you want my personal emvolvement then some commericial would be involved bro

@@mohitguptaji my servers is reachable one each other. . this server1 hostname = server1.local, server2 hostname =server2.local. following my haproxy.cfg frontend app_servers *:80 default_backend apps frontend main bind *:5000 acl url_static path_beg -i /static /images /javascript /stylesheets acl url_static path_end -i .jpg .gif .png .css .js use_backend static if url_static default_backend web-servers #--------------------------------------------------------------------- # static backend for serving up images, stylesheets and such #--------------------------------------------------------------------- backend static balance roundrobin server static 127.0.0.1:4331 check #--------------------------------------------------------------------- # round robin balancing between the various backends #--------------------------------------------------------------------- backend app balance roundrobin server app1 127.0.0.1:5001 check server app2 127.0.0.1:5002 check server app3 127.0.0.1:5003 check server app4 127.0.0.1:5004 check backend web-servers server servera server1.local:80 check server serverb server2.local:80 check

server1.local=192.168.10.100, server2.local=192.168.11.100 and load balancer haproxy installed is server3.local=192.168.12.100

Sdn network ????

@@mohitguptaji I mean, Software Defined Network sir

@@mohitguptaji can it be used?

@@QikiIzdihar never inplemented or tried this.

@@QikiIzdihar i think you should try and put an example

Yes

What is the issue man ?

Although I would agree, I also benefited from the unforeseen issues he ran into, good learning experience.

He is being real, that's what happens in real life, we misspell things, forget minor things, what matters is that he understands the concept, that's better than flawless pre-made tutorials, and try to stop such childish comments and grow up