On Wed, Sep 30, 2015 at 1:27 PM, Susheel Jalali <[email protected]>
wrote:

> Dear Bryan and HAProxy Developers:
>
> As requested, here is the complete haproxy config content.
>
> The relevant error logs are below:
>
> -- --
> global
>     log         127.0.0.1 local2
>     log-tag     haproxy
>     chroot      /var/haproxy/lib
>     pidfile      /var/run/haproxy.pid
>     user         haproxy
>     group       haproxy
>     nbproc      1
>     maxconn       256
>     spread-checks  5
>     daemon
>     stats socket  /var/haproxy/stats
>


The above seems normal but maxconn=256 is pretty low but maybe that's
appropriate for your apps.



>
> defaults
>     mode        http
>     log         global
>     option      httplog
>

The logs you show below do not conform to this 'httplog' format and seem to
be a modified CLF, so I don't know for sure what values are in the logs
below.




>     option      dontlognull
>

When debugging problems, should probably log as much as you can and then
decide what logs to hide when everything is working.



>     option      forwardfor
>     option      abortonclose
>     option      http-server-close
>     option      redispatch
>     retries     3
>

All seem normal


>     timeout queue           86400
>     timeout client          86400
>     timeout server          86400
>     timeout connect         86400
>     timeout http-keep-alive  30
>     timeout http-request      10
>     timeout check             20
>     maxconn                 50000
>

Default time values are in milliseconds so http-request must be completed
in 10 ms. This might work fine on a LAN but will be an issue on a WAN or
internet. I'm guessing that you assumed that time units default to seconds
instead of milliseconds? If so, then these values are still a problem but
then some will be way too long -- do you really want requests to queue and
to wait to connect to a backend server for a full day (86,400 seconds / 24
hours)?




>
>
> frontend webapps-frontend
>     bind          *:80
>
>     acl host_coscend    req.hdr(Host) coscend.com:80
>

This will only match if the Host header value includes the port which is
uncommon especially for port :80



>
>     acl path_subdomain_p1 path_beg -i /Product1
>
>     use_backend subdomain_p1-backend if host_coscend path_subdomain_p1
>
>     default_backend webapps-backend
>
> backend webapps-backend
> [ - - -]
>     option       http-server-close
>     server Product1.VM0 12.12.12.112:6012 cookie pad-p check
>

server is named "Product1.VM0" here but appears in logs below as "Product1"
which leads me to believe that this config is not used to produce the logs.



>
> backend subdomain_p1-backend
>     http-request set-header Host 12.12.12.112:6012
>             reqirep ^([^\ :]*)\ /Product1/(.*)     \1\ /\2
>     acl hdr_location res.hdr(Location) -m found
>     rspirep ^Location:\ (http?://12.12.12.112(:[0-9]+)?)?(/.*) Location:\
> /Product1  if hdr_location
>     server Product1.VM0 12.12.12.112:6012 cookie pad-p check
>
>
server is named "Product1.VM0" here but appears in logs below as "Product1"
which leads me to believe that this config is not used to produce the logs.



>
> admin.log
> Sep 30 12:42:29 localhost haproxy[1691]: Proxy webapps-frontend started.
> Sep 30 12:42:29 localhost haproxy[1691]: Proxy webapps-frontend started.
> Sep 30 12:42:29 localhost haproxy[1691]: Proxy webapps-backend started.
> Sep 30 12:42:29 localhost haproxy[1691]: Proxy webapps-backend started.
> Sep 30 12:42:29 localhost haproxy[1691]: Proxy subdomain_p1-backend
> started.
> Sep 30 12:42:29 localhost haproxy[1691]: Proxy HAProxy-stats started.
> Sep 30 12:47:29 localhost haproxy[5690]: Stopping frontend
> webapps-frontend in 0 ms.
> Sep 30 12:47:29 localhost haproxy[5690]: Stopping frontend
> webapps-frontend in 0 ms.
> Sep 30 12:47:29 localhost haproxy[5690]: Stopping backend webapps-backend
> in 0 ms.
> Sep 30 12:47:29 localhost haproxy[5690]: Stopping backend webapps-backend
> in 0 ms.
> Sep 30 12:47:29 localhost haproxy[5690]: Stopping backend
> subdomain_p1-backend in 0 ms.
> Sep 30 12:47:29 localhost haproxy[5690]: Stopping proxy HAProxy-stats in 0
> ms.
> Sep 30 12:47:29 localhost haproxy[5690]: Proxy webapps-frontend stopped
> (FE: 4 conns, BE: 0 conns).
> Sep 30 12:47:29 localhost haproxy[5690]: Proxy webapps-frontend stopped
> (FE: 4 conns, BE: 0 conns).
> Sep 30 12:47:29 localhost haproxy[5690]: Proxy webapps-backend stopped
> (FE: 0 conns, BE: 1 conns).
> Sep 30 12:47:29 localhost haproxy[5690]: Proxy webapps-backend stopped
> (FE: 0 conns, BE: 1 conns).
> Sep 30 12:47:29 localhost haproxy[5690]: Proxy subdomain_p1-backend
> stopped (FE: 0 conns, BE: 1 conns).
> Sep 30 12:47:29 localhost haproxy[5690]: Proxy HAProxy-stats stopped (FE:
> 26 conns, BE: 12 conns).
>
>

Why are proxy frontends repeated twice in the above log but backends (and
other entries) just once? Did you produce this output with a config
different from what you provided above too?





> Info.log
> Conditional backend
> Sep 30 12:47:29 localhost haproxy[1691]: 192.168.100.153 - - "GET
> /CoscendPad HTTP/1.1" 404 262 "" "" 53639 804 "webapps-frontend"
> "subdomain_p1-backend" "Product1" 5 0 0 3 8 ---- 4 4 0 0 0 0 0 "" ""
>

The server "Product1" was connected to (in 0 ms) and responded (in 3 ms)
with a 404 status code of 262 bytes -- if my assumptions about your
modified CLF log format is correct.



>
> Default backend:
> Sep 30 12:47:29 localhost haproxy[1691]: 192.168.100.153 - - "GET
> /favicon.ico HTTP/1.1" 200 4603 "" "" 53639 813 "webapps-frontend"
> "webapps-backend" "Product1" 30 0 0 3 34 ---- 1 1 0 0 0 0 0 "" ""
>
>




>
> Sincerely,
> Susheel Jalali
> Coscend Communications Solutions
> [email protected]
>
> Web site: www.Coscend.com
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> Messages from Coscend Communications Solutions' posted at:
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>
>
> On 10/01/15 01:21, Bryan Talbot wrote:
>
> On Wed, Sep 30, 2015 at 12:37 PM, Susheel Jalali <
> <[email protected]>[email protected]> wrote:
>
>> Dear HAProxy Developers community:
>>
>> After incorporating inputs from some of you, we tested with an updated
>> haproxy.cfg (see below).  Product-1 is still not accessible
>>
>
> Without the complete haproxy config and some logs, it was impossible for
> anyone to understand what issues you might be having. The question was just
> too vague.
>
>>
>> Info.log
>> Conditional backend
>> Sep 30 09:12:44 localhost haproxy[1691]: 192.168.100.153 - - "GET
>> /CoscendPad HTTP/1.1" 404 262 "" "" 53639 804 "webapps-frontend"
>> "subdomain_p1-backend" "Product1" 5 0 0 3 8 ---- 4 4 0 0 0 0 0 "" ""
>>
>>
> From the logs shown it looks like your "conditional" backend is returning
> a 404, but since the log format is not standard; without the haproxy config
> we can only guess at what the log contents mean.
>
> -Bryan
>
>
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>
>
>
>
>

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