Nginx VHosts & Directives
An installment of the VHosts and Directives series covering the Nginx Location directive, return codes, and rewrite rules for shaping request handling.
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Configure, secure, and tune web servers
Articles in this section walk through practical tasks for running web servers on RHEL, CentOS, Fedora, and other Linux distributions. Coverage spans Nginx configuration, virtual host setup, and the firewall rules that protect them.
Firewalld on RHEL / CentOS 7
Step-by-step setup of firewalld to control traffic to web services, open the right ports, and apply zones that match server roles.
View guide →Resetting a lost root password
Recovery procedure for a forgotten root password on CentOS 7 or Red Hat 7, useful before resuming server configuration work.
View guide →Shutdown from the command line
Clean ways to power down or restart a Linux system from the terminal, with notes on systemd and init-based shutdown behavior.
View guide →Firewalld setup checklist
- Identify the default zone and the services it covers.
- Add HTTP and HTTPS ports to the active zone.
- Reload firewalld and confirm rules persist after reboot.
- Restrict access by source address where the deployment allows.
Root password recovery on RHEL 7 / CentOS 7
- Interrupt GRUB and edit the boot entry to start a shell.
- Remount the filesystem read-write and reload SELinux policy.
- Set a new root password and trigger an automatic system reboot.
- Verify login with the new credentials before restoring services.
Command-line shutdown options
- Use
shutdown -h nowto halt the system immediately. - Use
shutdown -rto schedule a reboot with a wall message. - Use
systemctl powerofforsystemctl rebooton systemd hosts.