check_os_eol

check_os_eol

check_os_eol is a Bash script designed to check the End Of Life (EOL) status of various Linux distributions. It reads the OS version from /etc/os-release, compares it with a predefined list of EOL dates, and alerts if the OS is approaching or has surpassed its EOL date.

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Features

  • Supports multiple major Linux distributions including Ubuntu, Debian, Raspbian, CentOS, RHEL, Fedora, Rocky Linux, AlmaLinux, SUSE, and openSUSE.
  • Configurable warning and critical thresholds.
  • Provides human-readable output indicating the EOL status.

Usage

./check_os_eol.sh [WARN_DAYS] [CRIT_DAYS]
  • WARN_DAYS: Number of days before EOL to issue a warning (default: 90 days).
  • CRIT_DAYS: Number of days before EOL to issue a critical alert (default: 30 days).
  • -h: Display help message.

Examples

Check with default thresholds (90 days for warning, 30 days for critical):

./check_os_eol.sh

Check with custom thresholds (e.g., 60 days for warning, 20 days for critical):

./check_os_eol.sh 60 20

Help

To display the help message:

./check_os_eol.sh -h

Output

The script provides output in the following formats:

  • OK: The OS will not reach EOL soon.
  • WARNING: The OS will reach EOL within the specified warning period.
  • CRITICAL: The OS will reach EOL within the specified critical period or is already EOL.
  • UNKNOWN: The OS or its EOL date could not be determined.

Supported Distributions

  • Ubuntu
    • 18.04 (EOL: 2023-04-30)
    • 20.04 (EOL: 2025-04-30)
    • 22.04 (EOL: 2027-04-30)
    • 24.04 (EOL: 2029-04-30)
  • Debian
    • 10 (EOL: 2024-06-30)
    • 11 (EOL: 2026-06-30)
    • 12 (EOL: 2028-06-30)
  • CentOS
    • 7 (EOL: 2024-06-30)
    • 8 (EOL: 2021-12-31)
  • RHEL
    • 7 (EOL: 2024-06-30)
    • 8 (EOL: 2029-05-31)
    • 9 (EOL: 2032-05-31)
  • Fedora
    • 37 (EOL: 2024-12-31)
    • 38 (EOL: 2025-06-30)
  • Rocky Linux
    • 8 (EOL: 2029-05-31)
    • 9 (EOL: 2032-05-31)
  • AlmaLinux
    • 8 (EOL: 2029-05-31)
    • 9 (EOL: 2032-05-31)
  • SUSE
    • SLES 12 (EOL: 2027-10-31)
    • SLES 15 (EOL: 2031-07-31)
    • openSUSE Leap 15.5 (EOL: 2024-12-31)

Installation

  1. Clone the repository:
    git clone https://github.com/pr0j3ctx/check_os_eol.git
  2. Change into the directory:
    cd check_os_eol
  3. Make the script executable:
    chmod +x check_os_eol

Contributing

Contributions are welcome! Please submit a pull request or open an issue to discuss your changes or improvements.

License

This project is licensed under the GNU General Public License v3.0 - see the LICENSE file for details.

Changelog

[Unreleased]

  • Initial release of check_os_eol.

[1.0.0] - 2024-07-08

  • Added support for Ubuntu, Debian, CentOS, RHEL, Fedora, Rocky Linux, AlmaLinux, SUSE, and openSUSE.
  • Configurable warning and critical thresholds.
  • Added human-readable output indicating the EOL status.