On Wed, Oct 28, 2015 at 9:23 PM, Susheel Jalali <susheel.jal...@coscend.com> wrote: > Dear Baptiste, Ben and Jesse, > > We have been facing the same issue that HAProxy backend is not able to > pull the right Web servers using our local DNS. We applied Baptiste’s > updated patches to server.c and dns.c and re-installed with a clean > make/make install. Still the same erroneous result. > > Hope the following test results help resolve the DNS issue. If the > issue is already resolved, please let us know what we could be missing? > > In our case, Product1, Product2, Product3 are being served by the same > Web server and same port. The logs show that the request to backend > “product1” is getting redirected to product1.local.domain, default > backend and to other backend servers (product2.local.domain, > product3.local.domain). > > Here are the HAProxy configuration, relevant “info” logs and the patches > applied. We would appreciate any vectors. > > Patches applied: > 0001 (UPDATED): http://marc.info/?l=haproxy&m=144605173426350&w=2 > 0002: http://marc.info/?l=haproxy&m=144605551527649&q=p3 > > +++++++++++ > HAProxy Configuration > +++++++++++ > global > [..] > > defaults > [..] > > frontend webapps-frontend > #Product1 > acl host_https req.hdr(Host) <FQDN> > acl path_subdomain_p1 path_beg -i /Product1 > use_backend subdomain_p1-backend if host_https path_subdomain_p1 > > #Product2 > acl host_https req.hdr(Host) <FQDN> > acl path_subdomain_p2 path_beg -i /Product2 > use_backend subdomain_p2-backend if host_https path_subdomain_p2 > > default_backend webapps-backend > > backend webapps-backend > server server-id DefaultProductServer.internal.domain:80 check > > backend subdomain_p1-backend > http-request set-header Host <internal_IPxx.yy.zz.ww:APPLICATION_PORT> > > reqirep ^([^\ ]*)\ /Product1/*([^\ ]*)\ (.*)$ \1\ /\2\ \3 > rspirep ^(Location:)\ (https?://([^/]*))/(.*)$ Location:\ > /Product1/\3 > > server <server-id> <servername1.internal.domain>:80 check resolvers > haproxy-dns > > backend subdomain_p2-backend > [..] > > resolvers HAProxy-dns > nameserver dnsserver 10.10.10.1:53 > resolve_retries 3 > timeout retry 1s > hold valid 10s > > ++++++++++ > Logs: Info > ++++++++++ > Oct 28 14:51:41 localhost haproxy[12167]: 192.168.100.153 - - > [28/Oct/2015:19:51:41 +0000] "GET /Product1/ HTTP/1.1" 302 235 "" "" > 49936 640 "webapps-frontend~" "subdomain_p1-backend" "Product1.prod0" 33 > 0 0 5 38 ---- 1 1 0 0 0 0 0 "" "" > > Oct 28 14:51:41 localhost haproxy[12167]: 192.168.100.153 - - > [28/Oct/2015:19:51:41 +0000] "GET /Product1/ HTTP/1.1" 302 235 "" "" > 49936 640 "webapps-frontend~" "subdomain_p1-backend" "Product1.prod0" 33 > 0 0 5 38 ---- 1 1 0 0 0 0 0 "" "" > > Oct 28 14:51:41 localhost haproxy[12167]: 192.168.100.153 - - > [28/Oct/2015:19:51:41 +0000] "GET > /Product1/interface/login/login_frame.php?site=default HTTP/1.1" 200 > 1159 "" "" 49936 678 "webapps-frontend~" "subdomain_p1-backend" > "Product1.prod0" 4 0 0 15 19 ---- 1 1 0 1 0 0 0 "" "" > > Oct 28 14:51:41 localhost haproxy[12167]: 192.168.100.153 - - > [28/Oct/2015:19:51:41 +0000] "GET > /Product1/interface/login/login_frame.php?site=default HTTP/1.1" 200 > 1159 "" "" 49936 678 "webapps-frontend~" "subdomain_p1-backend" > "Product1.prod0" 4 0 0 15 19 ---- 1 1 0 1 0 0 0 "" "" > > Oct 28 14:51:41 localhost haproxy[12167]: 192.168.100.153 - - > [28/Oct/2015:19:51:41 +0000] "GET /interface/themes/style_oemr.css > HTTP/1.1" 404 283 "" "" 49936 698 "webapps-frontend~" "webapps-backend" > "DefaultProductServer.prod0" 22 0 1 6 29 ---- 3 3 0 1 0 0 0 "" "" > > Oct 28 14:51:41 localhost haproxy[12167]: 192.168.100.153 - - > [28/Oct/2015:19:51:41 +0000] "GET /interface/themes/style_oemr.css > HTTP/1.1" 404 283 "" "" 49936 698 "webapps-frontend~" "webapps-backend" > "DefaultProductServer.prod0" 22 0 1 6 29 ---- 3 3 0 1 0 0 0 "" "" > > Oct 28 14:51:41 localhost haproxy[12167]: 192.168.100.153 - - > [28/Oct/2015:19:51:41 +0000] "GET /interface/login/login_title.php > HTTP/1.1" 404 283 "" "" 49936 727 "webapps-frontend~" "webapps-backend" > "DefaultProductServer.prod0" 3 0 1 2 6 ---- 5 5 0 1 0 0 0 "" "" > > Oct 28 14:51:41 localhost haproxy[12167]: 192.168.100.153 - - > [28/Oct/2015:19:51:41 +0000] "GET /interface/login/login_title.php > HTTP/1.1" 404 283 "" "" 49936 727 "webapps-frontend~" "webapps-backend" > "DefaultProductServer.prod0" 3 0 1 2 6 ---- 5 5 0 1 0 0 0 "" "" > > Oct 28 14:51:41 localhost haproxy[12167]: 192.168.100.153 - - > [28/Oct/2015:19:51:41 +0000] "GET /interface/login/filler.php HTTP/1.1" > 404 278 "" "" 49941 733 "webapps-frontend~" "webapps-backend" > "DefaultProductServer.prod0" 2 0 0 2 4 ---- 5 5 1 2 0 0 0 "" "" > > Oct 28 14:51:41 localhost haproxy[12167]: 192.168.100.153 - - > [28/Oct/2015:19:51:41 +0000] "GET /interface/login/filler.php HTTP/1.1" > 404 278 "" "" 49941 733 "webapps-frontend~" "webapps-backend" > "DefaultProductServer.VM0" 2 0 0 2 4 ---- 5 5 1 2 0 0 0 "" "" > > Oct 28 14:51:41 localhost haproxy[12167]: 192.168.100.153 - - > [28/Oct/2015:19:51:41 +0000] "GET /interface/login/login.php HTTP/1.1" > 404 277 "" "" 49942 733 "webapps-frontend~" "webapps-backend" > "DefaultProductServer.VM0" 4 0 0 2 6 ---- 5 5 0 1 0 0 0 "" "" > > Oct 28 14:51:41 localhost haproxy[12167]: 192.168.100.153 - - > [28/Oct/2015:19:51:41 +0000] "GET /interface/login/login.php HTTP/1.1" > 404 277 "" "" 49942 733 "webapps-frontend~" "webapps-backend" > "DefaultProductServer.VM0" 4 0 0 2 6 ---- 5 5 0 1 0 0 0 "" "" > > Oct 28 14:51:41 localhost haproxy[12167]: 192.168.100.153 - - > [28/Oct/2015:19:51:41 +0000] "GET /Product1/interface/themes/login.css > HTTP/1.1" 200 5603 "" "" 49936 734 "webapps-frontend~" > "subdomain_p1-backend" "Product1.VM0" 3 0 0 5 8 ---- 5 5 0 1 0 0 0 "" "" > > Oct 28 14:51:41 localhost haproxy[12167]: 192.168.100.153 - - > [28/Oct/2015:19:51:41 +0000] "GET /Product1/interface/themes/login.css > HTTP/1.1" 200 5603 "" "" 49936 734 "webapps-frontend~" > "subdomain_p1-backend" "Product1.VM0" 3 0 0 5 8 ---- 5 5 0 1 0 0 0 "" "" > > Oct 28 14:56:02 localhost haproxy[12167]: 192.168.100.153 - - > [28/Oct/2015:19:56:02 +0000] "GET /Product2/ HTTP/1.1" 302 235 "" "" > 50017 378 "webapps-frontend~" "subdomain_p2-backend" "Product2.VM0" 2 0 > 0 6 8 ---- 1 1 0 0 0 0 0 "" "" > > Oct 28 14:56:02 localhost haproxy[12167]: 192.168.100.153 - - > [28/Oct/2015:19:56:02 +0000] "GET /Product2/ HTTP/1.1" 302 235 "" "" > 50017 378 "webapps-frontend~" "subdomain_p2-backend" "Product2.VM0" 2 0 > 0 6 8 ---- 1 1 0 0 0 0 0 "" "" > > Oct 28 14:56:02 localhost haproxy[12167]: 192.168.100.153 - - > [28/Oct/2015:19:56:02 +0000] "GET > /Product2/interface/login/login_frame.php?site=default HTTP/1.1" 200 > 1159 "" "" 50017 386 "webapps-frontend~" "subdomain_p2-backend" > "Product2.VM0" 2 0 0 18 20 ---- 1 1 0 1 0 0 0 "" "" > > Oct 28 14:56:02 localhost haproxy[12167]: 192.168.100.153 - - > [28/Oct/2015:19:56:02 +0000] "GET > /Product2/interface/login/login_frame.php?site=default HTTP/1.1" 200 > 1159 "" "" 50017 386 "webapps-frontend~" "subdomain_p2-backend" > "Product2.VM0" 2 0 0 18 20 ---- 1 1 0 1 0 0 0 "" "" > > Oct 28 14:56:02 localhost haproxy[12167]: 192.168.100.153 - - > [28/Oct/2015:19:56:02 +0000] "GET /interface/themes/style_oemr.css > HTTP/1.1" 404 283 "" "" 50017 406 "webapps-frontend~" "webapps-backend" > "DefaultProductServer.VM0" 8 0 0 2 10 ---- 3 3 0 1 0 0 0 "" "" > > Oct 28 14:56:02 localhost haproxy[12167]: 192.168.100.153 - - > [28/Oct/2015:19:56:02 +0000] "GET /interface/themes/style_oemr.css > HTTP/1.1" 404 283 "" "" 50017 406 "webapps-frontend~" "webapps-backend" > "DefaultProductServer.VM0" 8 0 0 2 10 ---- 3 3 0 1 0 0 0 "" "" > > Oct 28 14:56:02 localhost haproxy[12167]: 192.168.100.153 - - > [28/Oct/2015:19:56:02 +0000] "GET /interface/login/login_title.php > HTTP/1.1" 404 283 "" "" 50017 417 "webapps-frontend~" "webapps-backend" > "DefaultProductServer.VM0" 3 0 1 1 6 ---- 5 5 0 1 0 0 0 "" "" > > Oct 28 14:56:02 localhost haproxy[12167]: 192.168.100.153 - - > [28/Oct/2015:19:56:02 +0000] "GET /interface/login/login_title.php > HTTP/1.1" 404 283 "" "" 50017 417 "webapps-frontend~" "webapps-backend" > "DefaultProductServer.VM0" 3 0 1 1 6 ---- 5 5 0 1 0 0 0 "" "" > > Oct 28 14:56:02 localhost haproxy[12167]: 192.168.100.153 - - > [28/Oct/2015:19:56:02 +0000] "GET /interface/login/login.php HTTP/1.1" > 404 277 "" "" 50017 423 "webapps-frontend~" "webapps-backend" > "DefaultProductServer.VM0" 2 0 1 1 4 ---- 5 5 1 2 0 0 0 "" "" > > Oct 28 14:56:02 localhost haproxy[12167]: 192.168.100.153 - - > [28/Oct/2015:19:56:02 +0000] "GET /interface/login/login.php HTTP/1.1" > 404 277 "" "" 50017 423 "webapps-frontend~" "webapps-backend" > "DefaultProductServer.VM0" 2 0 1 1 4 ---- 5 5 1 2 0 0 0 "" "" > > Oct 28 14:56:02 localhost haproxy[12167]: 192.168.100.153 - - > [28/Oct/2015:19:56:02 +0000] "GET /interface/login/filler.php HTTP/1.1" > 404 278 "" "" 50023 423 "webapps-frontend~" "webapps-backend" > "DefaultProductServer.VM0" 3 0 0 3 6 ---- 5 5 0 1 0 0 0 "" "" > > Oct 28 14:56:02 localhost haproxy[12167]: 192.168.100.153 - - > [28/Oct/2015:19:56:02 +0000] "GET /interface/login/filler.php HTTP/1.1" > 404 278 "" "" 50023 423 "webapps-frontend~" "webapps-backend" > "DefaultProductServer.VM0" 3 0 0 3 6 ---- 5 5 0 1 0 0 0 "" "" > > Oct 28 14:56:02 localhost haproxy[12167]: 192.168.100.153 - - > [28/Oct/2015:19:56:02 +0000] "GET /Product2/interface/themes/login.css > HTTP/1.1" 200 5603 "" "" 50022 423 "webapps-frontend~" > "subdomain_p2-backend" "Product2.VM0" 4 0 0 5 9 ---- 5 5 0 1 0 0 0 "" "" > > Oct 28 14:56:02 localhost haproxy[12167]: 192.168.100.153 - - > [28/Oct/2015:19:56:02 +0000] "GET /Product2/interface/themes/login.css > HTTP/1.1" 200 5603 "" "" 50022 423 "webapps-frontend~" > "subdomain_p2-backend" "Product2.VM0" 4 0 0 5 9 ---- 5 5 0 1 0 0 0 "" "" > > -- -- > Sincerely, > > Susheel Jalali > Coscend Communications Solutions > susheel.jal...@coscend.com > > www.Coscend.com > ------------------------------------- >
Hi Susheel, I don't think your issue is related to DNS resolution. When you have the 404, your URL does not start with /Product1, that's why they are not redirected to Product1 backend. Baptiste
