Thanks for the suggestion. I tried this and there was no change in behavior.
-----Original Message----- From: Jarno Huuskonen <jarno.huusko...@uef.fi> Sent: Thursday, October 15, 2020 00:25 To: Wesley Lukehart <wlukeh...@innoflight.com>; haproxy@formilux.org Subject: Re: Heath check responds up even when server is down Hi, On Thu, 2020-10-15 at 01:27 +0000, Wesley Lukehart wrote: > Hello fine people. Short time lurker, first time poster. > > Was on version 2.0.5 with CentOS 7.6 and everything was working fine > with Exchange 2019. > Upgraded to 2.2.3 and now when we put Exchange into maintenance mode > HAProxy does not change status – it reports that all services are > still up (L7OK/200). > > Example backend: > backend be_ex2019_oab > mode http > balance roundrobin > option httpchk GET /oab/healthcheck.htm > option log-health-checks > http-check expect status 200 > server <servername> <IP_Address>:443 check ssl inter 15s verify > required ca-file <Path_to_crt_file> > server <servername> <IP_Address>:443 check ssl inter 15s verify > required ca-file <Path_to_crt_file> > > If I stop the app pool for a service in IIS, or stop all of IIS, > HAProxy will properly show the service/services as down – as it gets a > non 200 response (503 or 404). > > When putting the Exchange server into maintenance mode, there is no > http response. > When I check with a browser I get “ERR_HTTP2_PROTOCOL_ERROR” or > “Secure Connection Failed”. Basically no response. > When I check with wget from the haproxy server I get “HTTP request > sent, awaiting response... Read error (Connection reset by peer) in headers.” > Yet HAProxy is happy and continues to try to send mail to the down > server – not good. > > Any Ideas? Does the health check work if you try with something like this: option httpchk http-check connect ssl http-check send meth GET uri /oab/healthcheck.htm ver HTTP/1.1 hdr Host somehost.example.org http-check expect status 200 ( https://cbonte.github.io/haproxy-dconv/2.2/configuration.html#4.2-http-check%20connect ) -Jarno -- Jarno Huuskonen
