Server Fault Asked by posop on November 20, 2021
I cannot connect to a flask app (searx search engine) served by nginx and uwsgi.
My web server shows "502 Bad Gateway nginx"
Here is my nginx error: error log: /var/log/nginx/error.log
[crit] 2688#2688: *4 connect() to unix:/run/uwsgi/app/searx/socket.sock failed
(2: No such file or directory) while connecting to upstream,
client: 216.186.XXX.XXX, server searx.mysite.com,
request: "GET / HTTP/1.1",
upstream: "uwsgi://unix:/run/uwsgi/app/searx/socket.sock:",
host: "searx.mysite.com"
So I can see that the socket.sock are not the same as the upstream.
here is my nginx.conf
user http;
worker_processes auto;
worker_cpu_affinity auto;
events {
multi_accept on;
worker_connections 1024;
}
http {
charset utf-8;
sendfile on;
tcp-nopush on;
tcp_nodelay on;
server_tokens off;
log_not_found off;
types_hash_max_size 4096;
client_max_body_size 16M;
include mime.types;
default_type application/octet-stream;
keepalive_timeout 65;
access_log /var/log/nginx/access.log;
error_log /var/log/nginx/error.log warn;
include /etc/nginx/sites-enabled/*;
}
here is my searx.conf, the only place where I have specified where the .sock file is located:
/etc/nginx/sites-enabled/searx.conf
server {
listen 80;
server_name searx.mysite.com;
location / {
include uwsgi_params;
uwsgi_pass unix:/run/uwsgi/app/searx/socket.sock;
}
root /usr/local/searx/searx-src/searx;
location /static { }
}
When I look in my socket folder there is no file there…
ls -alh /run/uwsgi/app/searx/
total 0
drwxr-xr-x 2 searx searx 40 Jul 22 05:02 .
drwxr-xr-x 3 root root 60 Jul 22 05:02 ..
The command I am using to run uwsgi is:
exec chpst -u http env LC_ALL=en_US.UTF-8 /usr/bin/uwsgi --master --die-on-term --emperor /etc/uwsgi/sites
the command I am using to run nginx:
exec chpst -u root /usr/bin/nginx -c /etc/nginx/nginx.conf -g "daemon off;"
here is my searx uwsgi file
/etc/uwsgi/sites/searx.ini
[uwsgi]
project = searx
uid = searx
gid = searx
base = /usr/local/searx/searx-src
chdir = %(base)/%(project)
env = SEARX_SETTINGS_PATH=/etc/searx/settings.yml
disable-logging = false
workers = 2
chmod-socket = 666
vacuum = true
single-interpreter = true
master = true
plugin = python
lazy-apps = true
enable-threads = true
module = searx.webapp
route-run = fixpathinfo:
virtualenv = /usr/local/searx/searx-pyenv
pythonpath = %(base)
# NOTE: if I add or delete the next line there is no difference in output
socket = /run/uwsgi/app/searx/socket.sock
more digging: in the searx.ini I set disable-logging = false
and found this in the /var/log/uwsgi/current
log:
thunder lock: disabled (you can enable it with --thunder-lock
bind(): Permission denied [core/socket.c line 230]
Wed July 22 15:05:31 2020 - [emperor] curse the uwsgi instance searx.ini (pid: 3320)
Wed July 22 15:05:31 2020 - [emperor] removed uwsgi instance searx.ini
So there is definitely a problem with my searx.ini or how I am calling it?
I am not sure what other information you might need, but am happy to update the question as needed. I have been at this for days, so I would really appreciate any help you can provide.
Found the issue. Answer for google posterity...
Of course it was file permissions:
usermod -a -G http searx
chgrp -R http /usr/local/searx
chmod -R g+w user/local/searx
chgrp -R http /run/uwsgi/app/searx
chmod -R g+w /run/uwsgi/app/searx
Answered by posop on November 20, 2021
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