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I am trying to proxy tomcat with haproxy. Tomcat and haproxy are dockerized inside containers gis-web & web-gateway (both are added to docker bridge network)

I added sample.war app to webapps inside tomcat and I can see my sample app on host:8080/sample

This is the part of HaProxy configuration which does the proxyfing:

frontend http-in
    bind 0.0.0.0:80
    mode http
   
        acl IS_SAMPLE path_beg /sample
    use_backend gis_web if IS_SAMPLE

 backend gis_web
    mode http
    server gis_web_srv gis-web maxconn 1000 check port 8080

After setting this up i expected my sample app would be visible at host:80/sample

Also I get this error inside my docker logs:

Server gis_web/gis_web_srv is DOWN, reason: Layer4 connection problem, info: "No route to host", check duration: 1001ms.
0 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue.
backend 'gis_web' has no server available!

What am I doing wrong ? Is this somehow connected with gis_web_srv should that alias be pointing somewhere?

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  • Is "gis-web" a typo for "gis_web" ?
    – Gerard H. Pille
    Commented Jul 31, 2020 at 11:58
  • No , gis_web is name for backend and gis-web is name of the container which acts as dns for ip host:8080
    – Goran
    Commented Jul 31, 2020 at 12:05
  • So the haproxy container has no route to the gis-web/tomcat container.
    – Gerard H. Pille
    Commented Jul 31, 2020 at 13:15

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