this post was submitted on 24 Jun 2023
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What FOSS reverse-proxy to use in a redundant configuration? (self.selfhosted)
submitted 1 year ago* (last edited 1 year ago) by MigratingtoLemmy to c/selfhosted
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Hi, I was looking at different reverse proxies (Traefik, Caddy, NGINX, Apache (mod_proxy), HAProxy) - I wanted to run two instances of a reverse proxy on different devices for failover. I do not find much about running reverse-proxies in a failover configuration, could someone point me at a resource related to these proxies so I can figure out how to run reverse-proxies in an HA configuration?

Thanks

Edit: The answer seems to be using keepalived, because I will be using this only in my homelab and not exposing it to the internet.

Related links if someone is interested:

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[–] MigratingtoLemmy 2 points 1 year ago (1 children)

Just to be clear, I want an HA setup for my reverse proxies. How will running another reverse-proxy (NGINX) in front of my existing reverse-proxies help me here? This will again become a single point of failure which I'm looking to avoid.

Thanks!

[–] liara 1 points 1 year ago* (last edited 1 year ago) (1 children)

One of the easier options would be something like a DNS-based load balancer with an extremely short TTL (<60 seconds). Cloudflare offers an option that is $5/mo to use.

You would need 2 haproxies to do this.

Otherwise, you're likely looking into something like keepalived with an elastic/additional/failover IP that can swap between instances if a failover situation is detected

edit: something like this would be what I'm talking about for hetzner: https://vitobotta.com/2020/03/20/haproxy-kubernetes-hetzner-cloud/

Essentially you'll need some sort of API access to be able to swap the floating IP between the ha proxy instances on demand if keepalived detects a fault and needs to swap the floater to another machine.

[–] MigratingtoLemmy 2 points 1 year ago

Thank you. Since this will only be for my LAN, I'll start reading up on keepalived. Thanks for mentioning it.

Related links if someone is interested:

Thanks!