Learn how to fix Nginx’s “worker_rlimit_nofile Directive is Duplicate” error. Our Nginx Support team is here to help you with your questions and concerns.
How to Fix the “worker_rlimit_nofile Directive is Duplicate” Error in Nginx
If you have run into the error `worker_rlimit_nofile directive is duplicate` while working with Nginx, you are in luck.
This issue usually arises when the directive is defined in the configuration files more than once, leading to conflicts that prevent Nginx from starting or reloading properly.
This blog post will explain the symptoms, root cause, and steps to fix the error.
An Overview:
What Is `worker_rlimit_nofile`?
The `worker_rlimit_nofile` directive in Nginx specifies the maximum number of open file descriptors per worker process. This directive is useful for performance tuning, especially in high-traffic environments.
However, if this directive is declared more than once, Nginx will fail to parse the configuration correctly.
If you’re using Plesk, check out how to add additional Nginx directives in Plesk to better manage configurations safely.
Common Symptoms
We are likely to run into error messages during the following instances:
- When applying Plesk updates:
nginx: [emerg] “worker_rlimit_nofile” directive is duplicate in /etc/nginx/ulimit.global_params:1
nginx: configuration file /etc/nginx/nginx.conf test failed - During manual testing:
# nginx -t
nginx: [emerg] “worker_rlimit_nofile” directive is duplicate in /etc/nginx/nginx.conf:45 - When enabling Nginx:
/usr/local/psa/admin/bin/nginxmng -e
nginx: [emerg] “worker_rlimit_nofile” directive is duplicate
If you’re experiencing Nginx startup issues in Plesk, you might also encounter the Plesk error: Not starting nginx as it is disabled in config.
Causes & Fixes
Solution 1. Comment on the Duplicate
This error occurs because the `worker_rlimit_nofile` directive is defined in multiple files, such as `nginx.conf` and a global config like `ulimit.global_params`.
Click here for the Solution.
- First, SSH into the server.
- Then, edit the file mentioned in the error:
sudo vi /etc/nginx/nginx.conf - Next, comment out the duplicate line:
#worker_rlimit_nofile 20480; - After that, reload or restart Nginx:
sudo service nginx reloadIf Nginx is down, run this command:
/usr/local/psa/admin/bin/nginxmng -d
/usr/local/psa/admin/bin/nginxmng -e
Solution 2. Adjust Alternate Config File
Click here for the Solution.
- First, SSH into the server.
- Then, open the alternate config file mentioned (e.g., `/etc/nginx/ulimit.global_params`):
sudo vi /etc/nginx/ulimit.global_params - Next, comment on the directive:
#worker_rlimit_nofile 65536; - Reload or restart Nginx again.
In some cases, configuration conflicts may also arise when setting directives like client_max_body_size. If you’re running into issues with that, here’s a guide on how to configure client_max_body_size in Nginx via Plesk.
Additionally, if you suspect that stale or cached data is affecting your Nginx behavior, it might help to clear the Nginx cache in Plesk as part of your troubleshooting process.
[Need assistance with a different issue? Our team is available 24/7.]
Conclusion
The `worker_rlimit_nofile directive is duplicate` error in Nginx is easy to resolve once we identify the duplicated entries.
In brief, our Support Experts demonstrated how to resolve the “worker_rlimit_nofile directive is duplicate” error in Nginx.
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