I was looking for a solution for graceful reload of haproxy. I have a nginx server running which passes requests to Haproxy and at times I reload the Haproxy configuration. But I am observing that at time of reloading all the existing connections are getting cut off and haproxy backend queue shows 0 requests ( got from socket stats of haproxy ) .
Could you tell me if a configuration as below looks ok to serve pages delivered from my web servers. Is there some difficulty?
Requests --> HaProxy --> Varnish --> Nginx (frontend web server).
Is-it better to install varnish on my load balancers (haproxy) or on my web servers?
Cheers and thanks!
I want to load balance + failover backup multiple vps webservers hosted on different providers.
I heard that for HAProxy you need multiple server under the same subnet, plus a shared (virtual) ip address between load balancers.
But it's not possible in my case cause every VPS is on different node/network.
Is there a way to use HAProxy in this kind of setup ?
I wanted to ask about Nginx Retry of Requests. I have a Nginx running at the backend which then sends the requests to HaProxy which then passes it on the web server and the request is processed. I am reloading my Haproxy config dynamically to provide elasticity. The problem is that the requests are dropped when I reload Haproxy.
I am setting up HAProxy to load balance between two web servers. Some of the pages on the site require SSL. Stunnel is handling the https connections and passing them off to haproxy (Stunnel contains the cert). HAProxy will hand off requests to the web servers using http. Will containing the web servers and haproxy in an internal network be enough to be PCI compliant?
I don't know how troubleshoot this. I get "503 Service Unavailable" http error for all "nginx upstreams" proxy passing calls to haproxy fast_thin and slow_thin ( server 127.0.0.1:3100 and server 127.0.0.1:3200 ), which loadbalance on 6 Thin servers ( 127.0.0.1:3000 .. 3005 ). Static files like /blog are currently fine. The falldown is: nginx on port 80 - haproxy on 3100 and 3200 - thin on 3000 ..
Currently, I have nginx > 25 x nginx + fcgi
The main nginx, does the load balancing and each virtualhost listens to a different ip (different products).
some of the ips receive different hostnames, and they get rewritten back to the backend servers like:
...
I'm building a service-based web application. It consists of one primary rails app purely meant to handle requests, and a lot of other sinatra services running to actually process these requests.
I've decided to go with unicorn for the actual webserver for my rails app.
My dilemma is in picking the right stack to go with.
I have 4 nginx-powered image servers on their own subdomains which users would access at random. I decided to put them all behind a HAProxy load balancer to improve the reliability and to see the traffic statistics from a single location.