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Question

Can I have multiple subdirectories on one Load Balancer pointing to various targets?

Posted September 9, 2021 60 views
Load Balancing

Can I have a Load Balancer (configured as a reverse proxy) to handle multiple paths/subdirectories, for example:

https://mydomain.com/server1 -> droplet:3000
https://mydomain.com/server2 -> app
https://mydomain.com/server3 -> external IP

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TomSvestka
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TomSvestka

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bobbyiliev September 10, 2021

Hi there,

I believe that this is not yet doable with the Managed Load balancers. For layer 7 load balancing, you could use HAProxy. You can install it on a Droplet and configure it to your exact needs.

Here is a very good tutorial that covers this and also includes an introduction to Layer 7 Load Balancing:

https://www.digitalocean.com/community/tutorials/an-introduction-to-haproxy-and-load-balancing-concepts

Hope that this helps!
Regards,
Bobby

An Introduction to HAProxy and Load Balancing Concepts
by Mitchell Anicas
An introduction to basic load balancing concepts and terminology, using HAProxy, with some examples.
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  • TomSvestka September 10, 2021

    Hi Bobby,

    That makes sense, so I would use:

    1) a Load Balancer to provide me with an SSL certificate and DDoS protection
    2) a HAProxy inside of a Droplet that will be accessible only through the Load Balancer in #1

    If I run out of resources in the HAProxy droplet, I can scale it vertically or horizontally, configuring each instance identically (and the Load Balancer will split traffic between them)

    The configuration of HAProxy needs to be done by SSH-ing into the Droplet.

    Is my assumption correct?

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    • bobbyiliev September 10, 2021

      Hi there Tom,

      Yes indeed, this sounds all correct!

      Just one remark, I think that the Managed Load balancer does not come with DDoS protection, but as a suggestion, you could also add Cloudflare as a CDN + DDoS protection service.

      Cloudflare also provides you with an out-of-the-box SSL certificate so that you would not have to implement this on your Load Balancer level.

      Best,
      Bobby

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