Re: Next upstream based on custom http code

2015-12-11 Thread Frank Liu
Here is my flow: client - nginx - upstream - real upstream Upstream is getting the response from the 'real' upstream. So if real upstream is wrong, nginx will get standard 5xx from upstream and in this case I don't really want nginx to try next upstream because it will hit the same bad real upstre

Re: Next upstream based on custom http code

2015-12-11 Thread B.R.
If the upstream refuses to process a request, you might wish to emulate an unavailable service or a lack of response (timeout). Backend up and working are expected to process requests. Switching between legitimate errors and faked one will be done by monitoring backend logs. There is no such thing

Re: Next upstream based on custom http code

2015-12-10 Thread Frank Liu
No, 503 may be a legitimate error from upstream that nginx needs to pass to client. I am thinking some unused code , say, 590. On Thursday, December 10, 2015, B.R. wrote: > Like... 503? > To me 'server wants to make another upstream dealing with the request' > sounds very much like 'Service Unav

Re: Next upstream based on custom http code

2015-12-10 Thread B.R.
Like... 503? To me 'server wants to make another upstream dealing with the request' sounds very much like 'Service Unavailable'. --- *B. R.* On Thu, Dec 10, 2015 at 5:34 PM, Frank Liu wrote: > Hi > > There are a few options for when to try next upstream : > http://nginx.org/en/docs/http/ngx_http

Next upstream based on custom http code

2015-12-10 Thread Frank Liu
Hi There are a few options for when to try next upstream : http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_next_upstream Is it possible to configure a custom http code so that upstream servers can send that code if it wants to send nginx to upstream ? Thanks Frank