Too many redirects when running behind load balancer?, posted by Tamas Gal on Tue Jul 19 11:01:00 2022
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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 |
Re: Too many redirects when running behind load balancer?, posted by Tamas Gal on Tue Jul 19 11:17:44 2022
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Thanks for the quick reply! Sorry, I forgot to paste the "global" part of the config, I have that URL already set:
[global]
;Main Settings |
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Re: Too many redirects when running behind load balancer?, posted by Tamas Gal on Tue Jul 19 11:24:36 2022
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I also tried the default configuration (example config) and it that works behind the load balancer. So I guess it's related to the password-page,
which causes this redirect loop? Our logbooks are all password protected, so when a logbook URL is clicked, it should first present the login-form, and
that's where it chokes. |
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Re: Too many redirects when running behind load balancer?, posted by Tamas Gal on Tue Jul 19 12:36:04 2022
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My problem is that I don't even reach the page where I can enter a password. If you go to https://elog.test.km3net.de and click on a logbook,
you'll see that it immediately goes into a redirect loop. I already logged the routing but there is nothing else...
Stefan |
Re: Too many redirects when running behind load balancer?, posted by Tamas Gal on Tue Jul 19 12:38:12 2022 
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Attached is the log, where you can see that `Operations+IT` redirects to `Operations+IT/` and that redirects to `Operations+IT` again, which then goes
to `elog.test.km3net.de` and `Operations+IT` again etc. etc.
EDIT: I use the very same load balancer confugration for dozens of other services incl. Apache, Nginx, GitLab, Mattermost, RocketChat |
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Re: Too many redirects when running behind load balancer?, posted by Tamas Gal on Tue Jul 19 12:57:37 2022
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Yes, I used the empty `passwd` file from example. When I then click on one of the logbooks, I get to the page where I can register a user (see attached
screenshot). After clickin on "Save" for the user registration, I again get the redirect error. Once there is a registered user (i.e. a
non-empty password file) the redirect issue is persistent. Any idea where the problem might be? I just emptied the password file again, so you can |
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Re: Too many redirects when running behind load balancer?, posted by Tamas Gal on Fri Jan 20 14:11:52 2023
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The issue is still present and now it's quite urgent to move this last service into the Swarm. Does anyone maybe have an idea what's wrong? To
sum up: if there is a non-empty password file, the login page chokes in an infinite loop of redirects. I am using the same HAProxy load balancer configuration
as for all the other services (running Apache, NGINX, GitLab, XWiki, etc.): |
Invalid Content-Length in header when running behind a load balancer, posted by Tamas Gal on Wed Jan 25 14:36:33 2023
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I am still struggling to get ELOG running behind a load balancer and hope to get some advice here. As already reported in https://elog.psi.ch/elogs/Forum/69542 I
observed an infinite loop of redirects when prompted to log in and using a non-empty password file. Without a password, the service worked as
expected. This was with version 3.1.3. |