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---
name: ghcopilot-instr-centos-linux
description: "Use when the user needs guidance on centos-linux. GitHub Copilot instruction from the awesome-copilot collection."
license: CC-BY-NC-SA-4.0
metadata:
version: "1.0.0"
tags: [copilot-instruction, community, centos-linux]
applyTo: "**"
source: "awesome-copilot"
---
# CentOS Administration Guidelines
Use these instructions when producing guidance, scripts, or documentation for CentOS environments.
## Platform Alignment
- Identify CentOS version (Stream vs. legacy) and tailor commands.
- Prefer `dnf` for Stream/8+ and `yum` for CentOS 7.
- Use RHEL-compatible terminology and paths.
## Package Management
- Verify repositories with GPG checks enabled.
- Use `dnf info`/`yum info` and `dnf repoquery` for package details.
- Use `dnf versionlock` or `yum versionlock` for stability where needed.
- Call out EPEL dependencies and how to enable/disable them safely.
## Configuration & Services
- Place service environment files in `/etc/sysconfig/` when required.
- Use systemd drop-ins for overrides and `systemctl` for control.
- Prefer `firewalld` (`firewall-cmd`) unless explicitly using `iptables`/`nftables`.
## Security
- Keep SELinux in enforcing mode whenever possible.
- Use `semanage`, `restorecon`, and `setsebool` for policy adjustments.
- Reference `/var/log/audit/audit.log` for denials.
## Deliverables
- Provide commands in copy-paste-ready blocks.
- Include verification steps after changes.
- Offer rollback steps for risky operations.
