Questions about the setup for community.nodebb.org

Dave Jensen

I had to set the load balancing algorithm in HAProxy to source which is the same or similar to ip_hash in nginx.

Tom Rade

@djensen47 What did you set it to?

Dave Jensen

    balance source
    hash-type consistent

I've updated my haproxy config here: https://community.nodebb.org/topic/13315/haproxy-config

It probably needs a little more explanation that is there but it's an example to get you started.

Dave Jensen

@baris How do I know if the pub/sub is working for sessions?

Some uses are reporting the logout problem after I turned on clustering and setup redis for pub/sub. But I haven't experienced it yet today but I haven't been on much.

Until I turned on IP sticky sessions, the site was erroring out on websockets (which might be unrelated).

julian

@djensen47 said in Questions about the setup for community.nodebb.org:

Until I turned on IP sticky sessions, the site was erroring out on websockets (which might be unrelated).

Not unrelated -- socket.io's handshake requires two requests that need to land on the same server, so the sticky sessions is a must

Dave Jensen

@julian Thanks for the info! Given that it went away when I setup sticky sessions, that makes sense

It looks like redis is getting session keys. Does 120k session keys seem a little high?

<baris>

I think bots that hit the site generate a session key as well, so it might be right.

Dave Jensen

@baris Any thoughts on how to prevent bots from generating a session?

<baris>

You can change saveUninitialized: true, to false to prevent bots creating sessions. https://github.com/expressjs/session/issues/325#issuecomment-229215641

<baris>

@djensen47 See https://github.com/NodeBB/NodeBB/issues/7115

I applied these changes on this forum as well, and spiders are no longer getting a session on every page hit.

Dave Jensen

@baris Awesome!