👀 Views: 0 💬 Answers: 1 📅 Created: 2025-06-15

nginx ssl ubuntu certificates Nginx

I'm learning this framework and I'm reviewing some code and I've searched everywhere and can't find a clear answer. I've been struggling with this for a few days now and could really use some help. After upgrading my server from Ubuntu 22.04 to 22.10, I've encountered a persistent scenario with Nginx not recognizing my SSL certificates. The behavior message in the Nginx behavior log is as follows: ``` nginx: [emerg] SSL_CTX_use_PrivateKey_file("/etc/ssl/private/example.com.key") failed (SSL: behavior:0B080074:x509 certificate routines:X509_check_private_key:key values mismatch) ``` I checked that the certificate and the key file paths are correct, and they do exist. Here's the relevant part of my Nginx configuration: ```nginx server { listen 443 ssl; server_name example.com; ssl_certificate /etc/ssl/certs/example.com.crt; ssl_certificate_key /etc/ssl/private/example.com.key; location / { proxy_pass http://localhost:3000; } } ``` To troubleshoot, I verified that both the certificate and private key are for the same domain, and I've confirmed they are not corrupted by running: ``` openssl x509 -in /etc/ssl/certs/example.com.crt -text -noout openssl rsa -in /etc/ssl/private/example.com.key -check ``` Both commands return without any errors, showing that the files themselves appear to be valid. I also tried re-issuing the certificate using Certbot: ``` certbot certonly --standalone -d example.com ``` However, the same behavior continues. I have also checked the file permissions and ensured that the Nginx user has appropriate permissions to read both files, which they do. Is there a possibility that this could be due to changes in how SSL is handled in the new Ubuntu version, or am I missing something obvious? Any insights would be greatly appreciated! For context: I'm using Nginx on Ubuntu. What am I doing wrong? Has anyone dealt with something similar? This is part of a larger service I'm building. Has anyone dealt with something similar? This is happening in both development and production on Ubuntu 20.04. The project is a service built with Nginx. Is there a better approach?