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You run a task and Nginx throws the following error:
upstream timed out (110: Connection timed out) while reading response header from upstream
This can be truly annoying and at times difficult to pinpoint.
To fix this error, create a new file called limits.conf at the location /etc/nginx/conf.d and copy the following lines of code into it. This is assuming that conf.d is set to be included in nginx.conf.
proxy_connect_timeout 600; proxy_send_timeout 600; proxy_read_timeout 600; send_timeout 600;
This effectively takes these limits up to 5 minutes. Restart Nginx and run your task again to see if it throws the error again
service nginx restart
If you still get a timeout error then try doubling the values above and tweak them until you get it right.