If I understand correctly, that sends a redirect request back to the client? We need this for RPCs, so that won't really work.
On Mon, Aug 23, 2010 at 3:50 PM, Jerry Champlin < [email protected]> wrote: > Dustin: > > It's a little more elaborate and potentially dangerous than I was thinking, > but this link illustrates a way to do what I think you are after. > http://www.formilux.org/archives/haproxy/0906/2144.html > > The solution from Maciej Bogucki is pasted below for ease: > > frontend fr1 > > default_backend back_1 > rspirep ^HTTP/...\ [23]0..* \0\nSet-Cookie:\ > cookiexxx=0;path=/;domain=.yourdomain.com > rspirep ^(HTTP/...)\ 5[0-9][0-9].* \1\ 202\ Again\ > > Please\nSet-Cookie:\ > cookiexxx=1;path=/;domain=.yourdomain.com\nRefresh:\ 6\nContent-Length:\ > Lenght_xxx\nContent-Type:\ text/html\n\n<FRAMESET\ cols="100%"><FRAME\ src=" > http://www.yourdomain.com/redispatch.pl";> > > backend back_1 > > cookie cookiexxx > server chk1 127.0.0.1:81 weight 1 check > server chk2 127.0.0.1:82 weight 1 check > server chk3 127.0.0.1:83 weight 1 check cookie 1 backup > > -Jerry > > Jerry Champlin > Absolute Performance Inc. > -- > Enabling businesses to deliver critical applications at lower cost and > higher value to their customers. > > > On Mon, Aug 23, 2010 at 2:13 PM, Dustin Moskovitz <[email protected]>wrote: > >> Hey Jerry, can you elaborate? >> >> To be clear what happens is: >> 1/ proxy receives requests >> 2/ proxy sends request to webserver >> 3/ webserver sends 502 response to proxy >> 4/ proxy forwards 502 response to the end user >> >> I do have other webservers that I want to re-dispatch the request to - is >> that what you mean by backup servers? In any case, it seems like the proxy >> must be the one responsible for handling the failure. >> >> >> On Fri, Aug 20, 2010 at 12:08 PM, Jerry Champlin < >> [email protected]> wrote: >> >>> It seems like you could configure backup servers within the pool to >>> accomplish this although it's not quite as clean as what I suspect you are >>> looking for. >>> >>> -Jerry >>> >>> Jerry Champlin >>> Absolute Performance Inc. >>> -- >>> Enabling businesses to deliver critical applications at lower cost and >>> higher value to their customers. >>> >>> >>> >>> On Fri, Aug 20, 2010 at 12:54 PM, Dustin Moskovitz <[email protected]>wrote: >>> >>>> Hi all, >>>> We run haproxy in front of a bank of nginx servers, which each proxy >>>> requests to a custom web server on the same box. >>>> >>>> I was wondering if it is possible to configure haproxy such that it will >>>> redispatch requests that receive a 502 from nginx to a new server. I looked >>>> through the docs but could not find anything that seemed relevant. >>>> >>>> Dustin >>>> >>> >>> >> >
