What does such an entry in the hosting log mean for a site?

Question

Journaling

Good day!
Tell me, what does such an entry in the log mean, why is it marked [warning]?
Thank you!

2018/11/11 14:31:17 [warn] 19357#0: *7150006 an upstream response is buffered to a temporary file /tmp/nginx_proxy_temp/0000112353 while reading upstream, client: 99.99.99.99, server: mysite.ru, request: "GET /mebel/ HTTP/2.0", upstream: " 127.0.0.1:8080/mebel ", host: "mysite.ru", referrer: " https://mysite.ru/model-32/ "

Answer 1

The error is caused by insufficient nginx buffer size. This is not an error as such. It can appear during complex operations, when processes do not have enough memory. Look at the logs, if the error appears rarely, then there is no point in worrying, if the error pops up regularly when performing some very important and frequently used process, then you can try to increase the allocated memory limit or try to optimize the process.