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36 lines
1.7 KiB
Markdown
36 lines
1.7 KiB
Markdown
# sshd
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## Description
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This Ansible role configures the OpenSSH daemon (`sshd`) by deploying a templated `sshd_config` file. It applies secure, best-practice settings—such as disabling root login, enforcing public-key authentication, and setting appropriate logging levels—to harden remote access and reduce the risk of misconfiguration or lockout.
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## Overview
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- Renders `sshd_config.j2` into `/etc/ssh/sshd_config` with customizable options
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- Sets file ownership (`root:root`) and permissions (`0644`)
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- Automatically reloads and restarts the SSH service via a Systemd handler
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- Uses a `run_once_sys_svc_sshd` fact to ensure idempotent execution
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## Features
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- **Templated Configuration**
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Delivers a Jinja2-based `sshd_config` with variables for debug logging and PAM support.
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- **Security Defaults**
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- Disables password (`PasswordAuthentication no`) and root login (`PermitRootLogin no`)
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- Enforces public-key authentication (`PubkeyAuthentication yes`)
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- Conditionally sets `LogLevel` to `DEBUG3` when `MODE_DEBUG` is true
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- **Systemd Integration**
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Handles daemon reload and service restart seamlessly on configuration changes.
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- **Idempotency**
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Ensures tasks run only once per play by setting the `run_once_sys_svc_sshd` fact.
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## Further Resources
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- [sshd_config Manual (OpenSSH)](https://man7.org/linux/man-pages/man5/sshd_config.5.html)
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- [Ansible Template Module](https://docs.ansible.com/ansible/latest/collections/ansible/builtin/template_module.html)
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- [Ansible Shell & Handler Best Practices](https://docs.ansible.com/ansible/latest/user_guide/playbooks_handlers.html)
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- [OpenSSH Security Recommendations](https://www.openssh.com/security.html)
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