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-+++
-date = 2022-11-11
-title = "Fixing Permission Errors in /var/lib/nginx"
-description = "Learn how to fix permission errors related to the Nginx temporary file storage."
-+++
-
-*This is a brief post so that I personally remember the solution as it
-has occurred multiple times for me.*
-
-## The Problem
-
-After migrating to a new server OS, I started receiving quite a few
-permission errors like the one below. These popped up for various
-different websites I'm serving via Nginx on this server, but did not
-prevent the website from loading.
-
-I found the errors in the standard log file:
-
-```sh
-cat /var/log/nginx/error.log
-```
-
-```sh
-2022/11/11 11:30:34 [crit] 8970#8970: *10 open() "/var/lib/nginx/tmp/proxy/3/00/0000000003" failed (13: Permission denied) while reading upstream, client: 169.150.203.10, server: cyberchef.example.com, request: "GET /assets/main.css HTTP/2.0", upstream: "http://127.0.0.1:8111/assets/main.css", host: "cyberchef.example.com", referrer: "https://cyberchef.example.com/"
-```
-
-You can see that the error is `13: Permission denied` and it
-occurs in the `/var/lib/nginx/tmp/` directory. In my case, I
-had thousands of errors where Nginx was denied permission to read/write
-files in this directory.
-
-So how do I fix it?
-
-## The Solution
-
-In order to resolve the issue, I had to ensure the
-`/var/lib/nginx` directory is owned by Nginx. Mine was owned
-by the `www` user and Nginx was not able to read or write
-files within that directory. This prevented Nginx from caching temporary
-files.
-
-```sh
-# Alpine Linux
-doas chown -R nginx:nginx /var/lib/nginx
-
-# Other Distros
-sudo chown -R nginx:nginx /var/lib/nginx
-```
-
-You *may* also be able to change the `proxy_temp_path` in
-your Nginx config, but I did not try this. Here's a suggestion I found
-online that may work if the above solution does not:
-
-```sh
-nano /etc/nginx/http.d/example.com.conf
-```
-
-```conf
-server {
-  ...
-
-  # Set the proxy_temp_path to your preference, make sure it's owned by the 
-  # `nginx` user
-  proxy_temp_path /tmp;
-
-  ...
-}
-```
-
-Finally, restart Nginx and your server should be able to cache temporary
-files again.
-
-```sh
-# Alpine Linux (OpenRC)
-doas rc-service nginx restart
-
-# Other Distros (systemd)
-sudo systemctl restart nginx
-```