indico 2.0 not working

Administrators
1

Dear All,

OS: Ubuntu 18.04
Indico version: 2.0

Indico 2.0 is needed for us to migrate from indico 1.2 database to latest version. So followed the steps given in the link
https://docs.getindico.io/en/stable/installation/production/debian/apache/#deb-apache-pkg

However, indico is failed to run. It has below errors. Please let me know if any configuration glitch?

Pasting below indico service status…its always exited with error:
root@indico21:/opt/indico/log/apache# systemctl status uwsgi.service apache2.service indico-celery.service
● uwsgi.service - LSB: Start/stop uWSGI server instance(s)
Loaded: loaded (/etc/init.d/uwsgi; generated)
Active: active (exited) since Fri 2018-07-20 18:03:00 IST; 1min 32s ago
Docs: man:systemd-sysv-generator(8)
Process: 23895 ExecStop=/etc/init.d/uwsgi stop (code=exited, status=0/SUCCESS)
Process: 23954 ExecStart=/etc/init.d/uwsgi start (code=exited, status=0/SUCCESS)

Jul 20 18:02:59 indico21 systemd[1]: Starting LSB: Start/stop uWSGI server instance(s)…
Jul 20 18:03:00 indico21 uwsgi[23954]: * Starting app server(s) uwsgi
Jul 20 18:03:00 indico21 uwsgi[23954]: …done.
Jul 20 18:03:00 indico21 systemd[1]: Started LSB: Start/stop uWSGI server instance(s).

● apache2.service - The Apache HTTP Server
Loaded: loaded (/lib/systemd/system/apache2.service; enabled; vendor preset: enabled)
Drop-In: /lib/systemd/system/apache2.service.d
└─apache2-systemd.conf
Active: active (running) since Fri 2018-07-20 18:03:00 IST; 1min 32s ago
Process: 23896 ExecStop=/usr/sbin/apachectl stop (code=exited, status=0/SUCCESS)
Process: 23985 ExecStart=/usr/sbin/apachectl start (code=exited, status=0/SUCCESS)
Main PID: 24040 (apache2)
Tasks: 55 (limit: 4664)
CGroup: /system.slice/apache2.service
├─24040 /usr/sbin/apache2 -k start
├─24043 /usr/sbin/apache2 -k start
└─24044 /usr/sbin/apache2 -k start

Jul 20 18:03:00 indico21 systemd[1]: Starting The Apache HTTP Server…
Jul 20 18:03:00 indico21 apachectl[23985]: AH00112: Warning: DocumentRoot [/var/empty/apache] does not exist
Jul 20 18:03:00 indico21 systemd[1]: Started The Apache HTTP Server.

● indico-celery.service - Indico Celery
Loaded: loaded (/etc/systemd/system/indico-celery.service; enabled; vendor preset: enabled)
Active: failed (Result: exit-code) since Fri 2018-07-20 18:03:05 IST; 1min 26s ago
Process: 24299 ExecStart=/opt/indico/.venv/bin/indico celery worker -B (code=exited, status=1/FAILURE)
lines 1-34

=========================================================

Errors in apache logs:
root@indico21:/opt/indico/log/apache# tail error.log
[Fri Jul 20 17:36:51.413832 2018] [proxy:error] [pid 21999:tid 140503949506304] (111)Connection refused: AH00957: uwsgi: attempt to connect to 127.0.0.1:8008 (127.0.0.1) failed
[Fri Jul 20 17:36:51.413847 2018] [:error] [pid 21999:tid 140503949506304] [client 158.144.49.87:60356] failed to make connection to backend: 127.0.0.1:8008
[Fri Jul 20 17:36:51.477157 2018] [proxy:error] [pid 22000:tid 140504054372096] (111)Connection refused: AH00957: uwsgi: attempt to connect to 127.0.0.1:8008 (127.0.0.1) failed
[Fri Jul 20 17:36:51.477245 2018] [:error] [pid 22000:tid 140504054372096] [client 158.144.49.87:60360] failed to make connection to backend: 127.0.0.1:8008, referer: https://indico21.tifr.res.in/
[Fri Jul 20 18:03:46.588243 2018] [proxy:error] [pid 24044:tid 139898073896704] (111)Connection refused: AH00957: uwsgi: attempt to connect to 127.0.0.1:8008 (127.0.0.1) failed
[Fri Jul 20 18:03:46.588383 2018] [:error] [pid 24044:tid 139898073896704] [client 158.144.49.87:60920] failed to make connection to backend: 127.0.0.1:8008
[Fri Jul 20 18:03:46.684384 2018] [proxy:error] [pid 24044:tid 139897931220736] (111)Connection refused: AH00957: uwsgi: attempt to connect to 127.0.0.1:8008 (127.0.0.1) failed
[Fri Jul 20 18:03:46.684419 2018] [:error] [pid 24044:tid 139897931220736] [client 158.144.49.87:60930] failed to make connection to backend: 127.0.0.1:8008
[Fri Jul 20 18:03:46.742349 2018] [proxy:error] [pid 24044:tid 139897922828032] (111)Connection refused: AH00957: uwsgi: attempt to connect to 127.0.0.1:8008 (127.0.0.1) failed
[Fri Jul 20 18:03:46.742383 2018] [:error] [pid 24044:tid 139897922828032] [client 158.144.49.87:60934] failed to make connection to backend: 127.0.0.1:8008, referer: https://indico21.tifr.res.in/

=========================================================

indico.ini configuration details:

=========================================================
root@indico21:/etc/uwsgi/apps-available# cat indico.ini
[uwsgi]
uid = indico
gid = www-data
umask = 027

processes = 4
enable-threads = true
socket = 127.0.0.1:8008
stats = /opt/indico/web/uwsgi-stats.sock
protocol = uwsgi

master = true
auto-procname = true
procname-prefix-spaced = indico
disable-logging = true

plugin = python
single-interpreter = true

touch-reload = /opt/indico/web/indico.wsgi
wsgi-file = /opt/indico/web/indico.wsgi
virtualenv = /opt/indico/.venv

vacuum = true
buffer-size = 20480
memory-report = true
max-requests = 2500
harakiri = 900
harakiri-verbose = true
reload-on-rss = 2048
evil-reload-on-rss = 8192

2

can you verify that uwsgi is running? (check with ps aux | grep -i uwsgi)

if it is, check if you have a firewall or selinux blocking anything. usually i wouldn’t expect firewall rules for localhost but check anyway.

3

I’ve got the same issue.

[Wed Oct 14 14:26:35.495424 2020] [proxy:error] [pid 384412:tid 139786958403328] (111)Connection refused: AH00957: uwsgi: attempt to connect to 127.0.0.1:8008 (127.0.0.1) failed
[Wed Oct 14 14:26:35.495457 2020] [:error] [pid 384412:tid 139786958403328] [client 172.28.4.236:53899] AH10101: failed to make connection to backend: 127.0.0.1:8008, referer: http://chamaeleon.synchrotron-soleil.fr/

After i put the line ProxyPass / uwsgi://127.0.0.1:8008/ on my .conf for apache config.

With ps aux | grep -i uwsgi, i’ve got

root      385109  0.0  0.0  12108  1028 pts/0    S+   14:32   0:00 grep --color=auto -i uwsgi
4

so uwsgi is not running.

use systemctl start uwsgi.service to start it and systemctl status uwsgi.service to verify or check for errors

5

Thx for the help
I’ve installed uwsgi with pip install uwsgi in the virtualenv.
uwsgi --version
2.0.19.1

But, uwsgi.service doesn’t exist

6

I’m quite sure that the install guide does not install uwsgi with pip :wink: You only get the systemd unit if you install it using your distribution’s package manager…

7

uwigi is not available in the distribution’s package manager (centos 8) with
dnf install uwsgi.
Someone was able to make it work with systemd on centos 8?.

8

If there’s no python 2 uwsgi on centos 8 you can install uwsgi via pip install uwsgi in your virtualenv, but you will need to create a systemd unit to autostart it yourself.

Alternatively, consider using CentOS7 and only upgrade to CentOS8 with Indico 3.0 (which might even require C8)