I follow this to deploy a flash application (simple hello world) on Ubuntu 16-04. digital ocean tutorial
Everything is working fine until uWSGI service testing . After that, I performed the described step and, when I finally reached the bottom level and checked the IP address of the server, I got:
502 Bad Gateway
Good. I searched and checked my error log, I got the following: -
2017/01/16 05:29:27 [crit] 20714#20714: *2 connect() to unix:/home/sajjan/project/project.sock failed (2: No such file or directory) while connecting to upstream, client: xx.9.xxx.xxx, server: 138.xxx.xx.xxx, request: "GET / HTTP/1.1", upstream: "uwsgi://unix:/home/sajjan/project/project.sock:", host: "xx.xx.xx.xx"
So, after registering the error log, I created the project.sock file manually. Go to the server IP again and then the same error "502 Bad Gateway"
I checked the error log again and found this
2017/01/16 06:07:11 [crit] 20874#20874: *1 connect() to unix:/home/sajjan/project/project.sock failed (13: Permission denied) while connecting to upstream, client: 47.9.237.113, server: XX.XX.XX.XX, request: "GET / HTTP/1.1", upstream: "uwsgi://unix:/home/sajjan/project/project.sock:", host: " XX.XX.XX.XX "
I found out the permission question and changed the resolution using the following command
sudo chmod 666 project.sock
Now I checked the resolution (using ls -l filename)
-rw-rw-rw- 1 root root 0 Jan 16 05:31 project.sock
Now I am returning to check the IP address of the server, but found the same "502 Bad Gateway". Again I checked the error log and found this:
017/01/16 06:13:31 [error] 20897#20897: *6 connect() to unix:/home/sajjan/project/project.sock failed (111: Connection refused) while connecting to upstream, client: 47.9.237.113, server: XX.XX.XX.XX, request: "GET /favicon.ico HTTP/1.1", upstream: "uwsgi://unix:/home/sajjan/project/project.sock:", host: " XX.XX.XX.XX ", referrer: "http:// XX.XX.XX.XX /"
Over the past two days I have been looking for errors higher than the last two days, but nothing seemed to me. I checked these answers, but stackanswer-1 stackanswer-2 did not help, and with them I checked the entire digital community stream, but nothing works.
I am completely starting servers and know little about ubuntu. If you can help me figure out what I'm doing wrong, or suggest some of the best tutorials / ways to deploy my flash drive application, then I would really appreciate it.
These are my files.
hello.py
from flask import Flask app = Flask(__name__) @app.route("/") def hello(): return "<h1 style='color:blue'>Hello There!</h1>" if __name__ == "__main__": app.run(host='0.0.0.0')
project.ini
[uwsgi] module = wsgi:app master = true processes = 5 socket = /home/sajjan/project/project.sock chmod-socket = 660 vacuum = true die-on-term = true
wsgi.py
from hello import app if __name__ == "__main__": app.run()
Below is the file: / etc / nginx / sites-available / project
server { listen 80; server_name 138.197.28.107; location / { include uwsgi_params; uwsgi_pass unix:/home/sajjan/project/project.sock; } }
When I run the command:
sudo service uwsgi restart
output:
Failed to restart wsgi.service: Unit wsgi.service not found.
and conclusion
sudo service nginx status/restart
then it shows that nginx is working.
Help me, if there is anything else you want to know, let me know. thanks
EDIT:
I created a project.service file and its code:
[Unit] Description=uWSGI instance to serve project After=network.target [Service] User=sajjan Group=www-data WorkingDirectory=/home/sajjan/project Environment="PATH=/home/sajjan/project/venv/bin" ExecStart=/home/sajjan/project/venv/bin/uwsgi --ini project.ini [Install] WantedBy=multi-user.target
I realized that I need to execute the command below:
sudo systemctl start project
Output:
Warning: project.service changed on disk. Run 'systemctl daemon-reload' to reload units.
and when i started
sudo systemcl reload project
then print:
Failed to reload project.service: Job type reload is not applicable for unit project.service. See system logs and 'systemctl status project.service' for details.
and when I check "systemctl status project.service"
● project.service - uWSGI instance to serve project Loaded: loaded (/etc/systemd/system/project.service; enabled; vendor preset: enabled) Active: failed (Result: exit-code) since Mon 2017-01-16 17:49:29 UTC; 6min ago Main PID: 27157 (code=exited, status=203/EXEC) Jan 16 17:49:29 learningwithpython systemd[1]: Started uWSGI instance to serve project. Jan 16 17:49:29 learningwithpython systemd[1]: project.service: Main process exited, code=exited, status=203/EXEC Jan 16 17:49:29 learningwithpython systemd[1]: project.service: Unit entered failed state. Jan 16 17:49:29 learningwithpython systemd[1]: project.service: Failed with result 'exit-code'.