Opened 5 months ago

Closed 5 months ago

#2550 closed defect (duplicate)

Using the 'sudo ./nginx -t' command results in the issue of the ownership of the 'proxy_temp' and other temporary folders being changed.

Reported by: 333eelrm@… Owned by:
Priority: major Milestone:
Component: documentation Version: 1.20.x
Keywords: configuration check Cc: 333eelrm@…
uname -a: Linux localhost.localdomain 3.10.0-957.el7.x86_64 #1 SMP Thu Nov 8 23:39:32 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
nginx -V: nginx version: nginx/1.20.2
built by gcc 4.8.5 20150623 (Red Hat 4.8.5-36) (GCC)
built with OpenSSL 1.0.2i 22 Sep 2016
TLS SNI support enabled
configure arguments: --prefix=/vdata/k8s/deployer/app/openresty/nginx --with-pcre=../pcre-8.40 --with-zlib=../zlib-1.2.11 --with-openssl=../openssl-OpenSSL_1_0_2i --with-http_stub_status_module --with-http_ssl_module --with-stream --add-module=../nginx-module-vts-0.1.18 --add-module=../nginx-module-stream-sts-0.1.1 --add-module=../nginx-module-sts-0.1.1

Description

Hello, I am a DevOps professional from a Chinese company responsible for Nginx product operations. You can call me Peng Li. We encountered the following issue when using Nginx open-source version 1.20.2 in our production environment. On October 12th, we made modifications to the nginx_8000.conf configuration file and executed the 'sudo nginx -t' command. Following this, we noticed that the owner of all temporary files in the nginx directory had been changed to "nobody." Upon consulting the documentation, we discovered that this occurred due to the 'user' directive in the configuration file not being set to the current user.

In light of the above issue, we examined the source code of the '-t' command and have some reservations about its functionality. As a tool for checking and validating Nginx configurations, wouldn't it be more reasonable for 'nginx -t' to produce an error when the user specified in the configuration file via the 'user' directive doesn't match the current owner of the temp files, rather than directly altering the user of the temp folder to "nobody"? We sincerely hope that the official developers can provide us with a detailed explanation. We deeply appreciate your assistance!

Change History (1)

comment:1 by Maxim Dounin, 5 months ago

Resolution: duplicate
Status: newclosed

The nginx -t command does various configuration testing, including creating logs and directories, and fixing ownership of appropriate directories - much like during normal nginx startup. Since nginx does fix ownership of directories during startup - this is something nginx -t is expected to do as well, to ensure that nginx startup will actually succeed with the configuration being tested.

Duplicate of #1791.

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