Clément Désiles
ea93eb8c59
The fallback was created via cp as root:root 0600 and relied on a separate chown task to fix ownership. When that chown did not take, sshd could not read /etc/ssh/authorized_keys/<user> in the unprivileged session, so pubkey auth failed whenever the encrypted home was locked. Replace the cp + chown pair with a single idempotent copy that keeps the file root-owned but world-readable (0644). It contains only public keys, so 0644 is safe and passes StrictModes.
89 lines
2.2 KiB
YAML
89 lines
2.2 KiB
YAML
---
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- name: Load OS-specific variables
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ansible.builtin.include_vars: "{{ item }}"
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with_first_found:
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- "vars/{{ ansible_facts['os_family'] }}.yml"
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- "vars/debian.yml"
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- name: Install OpenSSH
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ansible.builtin.package:
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name: "{{ ssh_package_name }}"
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state: present
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- name: Install UFW
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ansible.builtin.package:
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name: ufw
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state: present
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- name: Enable SSH
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ansible.builtin.service:
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name: "{{ ssh_service_name }}"
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enabled: true
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- name: Allow SSH incoming connections
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community.general.ufw:
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rule: allow
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port: "{{ ssh_port }}"
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proto: tcp
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from: "{{ item.src }}"
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direction: in
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comment: "{{ item.comment }}"
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loop: "{{ ssh_allowed_networks }}"
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# TODO
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# - name: Add SSH public key to authorized_keys
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# authorized_key:
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# user: "{{ item }}"
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# state: present
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# key: "{{ lookup('file', '~/.ssh/id_rsa.pub') }}"
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# comment: "{{ lookup('env', 'USER') | default('ansible') }}@{{ lookup('pipe', 'hostname -s') }}"
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# loop: "{{ ssh_users.split() }}"
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- name: Authorized keys fallback (when home cannot be mounted)
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when: ssh_authorized_keys_fallback_enabled
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block:
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- name: Create the directory
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ansible.builtin.file:
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path: "{{ ssh_authorized_keys_fallback_dir }}"
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state: directory
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owner: root
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group: root
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mode: "0755"
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- name: Backup authorized_keys out of HOME dir (if unavailable at startup)
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ansible.builtin.copy:
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src: "/home/{{ item }}/.ssh/authorized_keys"
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dest: "{{ ssh_authorized_keys_fallback_dir }}/{{ item }}"
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remote_src: true
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owner: root
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group: root
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mode: "0644"
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loop: "{{ ssh_users.split() }}"
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- name: Remove motd on Debian
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ansible.builtin.file:
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path: /etc/motd
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state: absent
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when: ansible_facts['os_family'] == 'Debian'
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- name: Hardening sshd_config
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ansible.builtin.template:
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src: templates/sshd_config.j2
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dest: "{{ sshd_config }}"
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owner: root
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group: root
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mode: "0600"
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validate: "{{ sshd_binary }} -t -f %s"
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notify: Restart SSH service
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- name: Enable UFW
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community.general.ufw:
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state: enabled
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- name: Enable UFW service at startup
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ansible.builtin.systemd:
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name: ufw
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enabled: true
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state: started
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