We were running ELOG for many many years in our experiments and the instance was operated on a Debian XEN server as a container. I am now trying to migrate it into our Docker Swarm cluster and I am using the https://hub.docker.com/r/de1lz/elog-docker Docker image, which works very well with our logbooks when I run it as a single container. However, when I put the container behind my load balancer (HAProxy) using the simple HTTP mode (which works very well for all the other HTTP-based services) with this simple configuration:
backend be_elog.km3net.de
mode http
server-template km3net-elog- 1 km3net-elog_elog:8080 check resolvers docker init-addr libc,none
I get a "too many redirects" error when I try to access one of the logbooks. The starting page works fine, but every other link leads to a pile-up of redirects.
Here is the current instance running, where you can see the behaviour: https://elog.test.km3net.de (all log entries deleted and only two logbooks activated)
My question is: what kind of redirect could go wrong here? I don't know how the internal HTTP server of ELOG works, but maybe someone faced similar issues.
My ELOG configuration is also pretty basic, and as I wrote above, everything works when I run it without the load balancer (single instance at the moment). Here is the top part of the configuration, it contains a few dozens of logbooks but they are configured the very same way.
;User Settings
;=============
Password file = login.xml
Admin user = km3net_admin
Self register = 0
Allow password change = 0
Allow config = km3net_admin
;Group Settings:
;====
Group ELOGKM3NET = Operations IT, Operations FR
[Operations IT]
Subdir = Operations_IT
Theme = default
Default encoding = 0
Comment = KM3NeT IT Detector Operations
Attributes = Author, Type, Subject
Options Author = A, B, C
Options Type = PPM-DOM, PPM-DU, Comment, Power cut, New run
Extendable Options = Type
Required Attributes = Author, Type, Subject
Page Title = ELOG - $subject
;Sort Attributes = Author, Type
Quick filter = Date, Type, Author
Resubmit default = 2
Reverse sort = 1
Menu commands = List, New, Edit, Reply, Duplicate, Find, Config, Help, Logout
Preset on first reply Subject = Re: $Subject
Preset on reply author =
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