From dac0eb9c367beefa026d638ae650fef0ab536a55 Mon Sep 17 00:00:00 2001 From: allen Date: Wed, 11 Feb 2026 08:34:02 -0800 Subject: [PATCH] Update README.md --- README.md | 174 ------------------------------------------------------ 1 file changed, 174 deletions(-) diff --git a/README.md b/README.md index d4ea59c..e69de29 100644 --- a/README.md +++ b/README.md @@ -1,174 +0,0 @@ -# RHEL 8.10 Offline Update Script - -An interactive bash script for applying RHEL 8.10 updates from a local ISO file in air-gapped or disconnected environments. - -## Overview - -This script guides administrators through the process of mounting an update ISO and applying patches to RHEL 8.10 systems that cannot reach Red Hat's CDN or Satellite servers. - -## Requirements - -- RHEL 8.10 system -- Root or sudo access -- Update ISO: `Full_Latest_RHEL8_x86_64_patches_2026-01-13.iso` -- ~35 GB free disk space (if copying ISO locally) - -## Quick Start - -```bash -# Download the script -chmod +x rhel8-iso-update.sh - -# Run with sudo -sudo ./rhel8-iso-update.sh -``` - -## Features - -- **Interactive prompts** - Confirms each action before proceeding -- **External media detection** - Automatically finds the ISO on USB drives -- **Unmounted USB support** - Detects and offers to mount USB devices -- **Progress feedback** - Color-coded output for easy reading -- **Reboot detection** - Checks if a reboot is needed after updates -- **Cleanup options** - Offers to remove configs and unmount when finished - -## What the Script Does - -| Step | Action | -|------|--------| -| 1 | Locates the ISO file (local storage or external media) | -| 2 | Creates mount point at `/media/JanPatch` | -| 3 | Mounts the ISO | -| 4 | Creates repo file at `/etc/yum.repos.d/JanPatch.repo` | -| 5 | Refreshes DNF cache | -| 6 | Displays available updates | -| 7 | Applies updates | -| 8 | Checks if reboot is required | -| 9 | Cleanup (optional) | - -## Usage Examples - -### ISO Already Copied to Server - -If the ISO is already at `/var/isos/Full_Latest_RHEL8_x86_64_patches_2026-01-13.iso`: - -```bash -sudo ./rhel8-iso-update.sh -``` - -The script will detect it and proceed. - -### ISO on USB Drive - -1. Plug in the USB drive containing the ISO -2. Run the script: - -```bash -sudo ./rhel8-iso-update.sh -``` - -3. The script will detect the USB and offer options: - - Copy ISO to local storage (recommended for faster updates) - - Use ISO directly from USB (no wait, but slower updates) - -### Manual ISO Path - -If your ISO is in a non-standard location, the script will prompt you to enter the path manually. - -## Configuration - -Default paths used by the script: - -| Setting | Value | -|---------|-------| -| ISO filename | `Full_Latest_RHEL8_x86_64_patches_2026-01-13.iso` | -| Default ISO path | `/var/isos/` | -| Mount point | `/media/JanPatch` | -| Repo file | `/etc/yum.repos.d/JanPatch.repo` | -| Repo name | `dvd-rhel-patches` | - -To change these defaults, edit the Configuration section at the top of the script. - -## Repository Configuration - -The script creates the following repo file: - -```ini -[dvd-rhel-patches] -name=DVD for RHEL Patches -baseurl=file:///media/JanPatch -enabled=1 -gpgcheck=0 -``` - -GPG checking is disabled to avoid signature issues in disconnected environments. - -## Cleanup - -At the end of the process, the script offers to: - -- Disable the `dvd-rhel-patches` repository -- Remove the repo file -- Unmount the ISO -- Unmount USB drives (if used) -- Delete the ISO file to free up space - -All cleanup actions require confirmation. - -## Troubleshooting - -### Script won't run - -```bash -# Make sure it's executable -chmod +x rhel8-iso-update.sh - -# Run with sudo -sudo ./rhel8-iso-update.sh -``` - -### ISO not detected on USB - -- Ensure the USB drive is plugged in before running the script -- Try running `lsblk` to verify the system sees the drive -- The script searches up to 3 directories deep on external media - -### "No repodata found" error - -The ISO structure may differ from expected. Check the ISO contents: - -```bash -sudo mount -o loop /path/to/iso /mnt/temp -ls -la /mnt/temp -find /mnt/temp -name "repodata" -type d -``` - -Update the `baseurl` in `/etc/yum.repos.d/JanPatch.repo` to point to the directory containing `repodata/`. - -### Updates failing with dependency errors - -Try disabling other repos and using only the ISO: - -```bash -sudo dnf update --disablerepo="*" --enablerepo="dvd-rhel-patches" -``` - -## Manual Process - -If you prefer to run the steps manually, see the accompanying guide: [RHEL 8.10 Offline Update Guide](rhel8-iso-update-guide.md) - -## Files - -| File | Description | -|------|-------------| -| `rhel8-iso-update.sh` | Interactive update script | -| `rhel8-iso-update-guide.md` | Manual step-by-step guide | -| `README.md` | This file | - -## Author - -Cybersecurity Team - -## Last Updated - -January 2026