systemd

    1

    Author, harden, and debug systemd units for production services and scheduled tasks.

    Free

    1 installSecurity scanned

    Works with the AI tools you already use

    Claude CodeClaude CodeCursorCursorCodex CLICodex CLIMuseMuseDotsDots+22 more

    systemd

    Example session with this skill installed

    I need a systemd service file for a Node.js app at /opt/api/server.js running as 'apiuser'. It needs to restart on failure, use 2GB max RAM, and have strict security hardening.

    • Read your context and instructions
    • Compiled the systemd

    I have generated a hardened systemd service unit for your Node.js application. This configuration includes automatic restarts, resource limits, and filesystem isolation.

    systemd Service Configuration

    [Unit]
Description=Node.js API Server
After=network.target

[Service]
Type=simple
User=apiuser
Group=apiuser
WorkingDirectory=/opt/api
ExecStart=/usr/bin/node /opt/api/server.js

# Restart policy
Restart=on-failure
RestartSec=5s

# Resource Limits
MemoryMax=2G
LimitNOFILE=65535

# Security Hardening
PrivateTmp=true
NoNewPrivileges=true
ProtectSystem=strict
ProtectHome=true
PrivateDevices=true
ProtectKernelTunables=true
ProtectControlGroups=true
RestrictNamespaces=true

# Allow writing to specific application paths if needed
# ReadWritePaths=/var/log/api-app

[Install]
WantedBy=multi-user.target

    Next steps

    1. Save this content to /etc/systemd/system/api-server.service.
    2. Run sudo systemctl daemon-reload to register the new unit.
    3. Start and enable the service with sudo systemctl enable --now api-server.service.

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    About this skill

    The problem

    Managing Linux services manually via scripts is error-prone and lacks native recovery, resource limits, and unified logging. Developers often struggle with correct unit file syntax, leading to services that fail to restart on crash or leak privileges.

    What it does

    • Generates hardened systemd service units for Node.js, Python, and Go applications.
    • Configures timer units with cron-like scheduling and persistence for background tasks.
    • Implements security best practices like PrivateTmp, NoNewPrivileges, and ProtectSystem.
    • Sets up socket activation to start services only when traffic arrives.
    • Manages drop-in overrides to modify package-provided units without touching original files.

    Frameworks & tools

    Linux distributions using systemd (Ubuntu, Debian, CentOS, Fedora, RHEL), journalctl, and systemctl.

    Why this beats prompting it yourself

    Generic LLMs often forget to include essential Restart logic or LimitNOFILE settings required for production-grade stability. This skill enforces a security-first approach, ensuring every service is isolated and monitored correctly from the start.

    Use cases

    • Deploying a Node.js API with automatic restarts and logging to the system journal.
    • Replacing fragile cron jobs with reliable systemd timers and randomized delays.
    • Hardening an existing public-facing service to prevent filesystem access.
    • Debugging startup failures using journalctl filtering and boot-level logs.

    Known limitations

    Does not support non-systemd init systems like OpenRC (Alpine Linux) or macOS launchd. Focuses on system management, not container orchestration like Docker.

    How to install

    Works the same in every agent - Claude, Cursor, Codex, Copilot and 20+ more.

    ~30 seconds
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      Download the ZIP

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      Unzip into your skills folder

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    3. 3

      Ask your agent to use it

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    Security scanned

    Verified clean 12 days ago

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    Listed12 days ago

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