DevOps
Nginx Wrong SSL Certificate for Domain: SNI Server Block
Resolve Nginx wrong SSL certificate domain with diagnostics, underlying causes, verified fixes and safe recovery steps.
Tag
Production Debugging
12 articles
DevOps
WordPress HTTP 500 After Plugin Update: Fatal Error Recovery
Resolve WordPress 500 after plugin update with diagnostics, underlying causes, verified fixes and safe recovery steps.
DevOps
Nginx Too Many Redirects: HTTPS Proxy Loop Fix
Resolve Nginx too many redirects fix with diagnostics, underlying causes, verified fixes and safe recovery steps.
DevOps
SSH Permission Denied Publickey: Authorized Keys Fix
Resolve SSH Permission denied publickey fix with diagnostics, underlying causes, verified fixes and safe recovery steps.
DevOps
Linux df Full but du Small: Deleted Open Files Fix
Resolve Linux df du mismatch disk full with diagnostics, underlying causes, verified fixes and safe recovery steps.
Databases
MySQL Error 1045: Access Denied for User Host
Resolve MySQL error 1045 access denied with diagnostics, underlying causes, verified fixes and safe recovery steps.
DevOps
PM2 Node.js Restart Loop: Find the Real Crash
Resolve PM2 app restarting repeatedly with diagnostics, underlying causes, verified fixes and safe recovery steps.
CI/CD
GitHub Actions Permission Denied: SSH and Workflow Tokens
Resolve GitHub Actions permission denied deploy with diagnostics, underlying causes, verified fixes and safe recovery steps.
DevOps
Docker Compose ENOTFOUND db: Service DNS Troubleshooting
Resolve Docker Compose ENOTFOUND db with diagnostics, underlying causes, verified fixes and safe recovery steps.
DevOps
Certbot Renewal Failed: Repair Nginx Certificate Renewal
Resolve Certbot renewal failed with diagnostics, underlying causes, verified fixes and safe recovery steps.