refactor: split ansible book into roles

roles/common/files/aleidk_key

@@ -0,0 +1,25 @@
+$ANSIBLE_VAULT;1.1;AES256
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+63326335356431646465

roles/common/files/aleidk_key.pub

@@ -0,0 +1,10 @@
+$ANSIBLE_VAULT;1.1;AES256
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+3931

roles/common/files/robo_key

@@ -0,0 +1,25 @@
+$ANSIBLE_VAULT;1.1;AES256
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roles/common/files/robo_key.pub

@@ -0,0 +1,10 @@
+$ANSIBLE_VAULT;1.1;AES256
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+6364

roles/common/handlers/main.yaml

@@ -0,0 +1,4 @@
+- name: Restart sshd
+  ansible.builtin.service:
+    name: sshd
+    state: restarted

roles/common/meta/arguments_specs.yaml

@@ -0,0 +1,19 @@
+---
+argument_specs:
+  main:
+    short_description: Main entry point for the common role
+    author:
+      - aleidk
+    options:
+      extra_groups:
+        type: "list"
+        elements: "str"
+        required: false
+        description:
+          - "Additional groups that will be added to each user"
+      robo_allowed_commands:
+        type: "list"
+        elements: "str"
+        required: false
+        description:
+          - "Commands that robo will be allowed to execute over SSH"

roles/common/tasks/main.yaml

@@ -0,0 +1,44 @@
+# yaml-language-server: $schema=https://raw.githubusercontent.com/ansible/ansible-lint/refs/heads/main/src/ansiblelint/schemas/tasks.json
+
+- name: Create a user group named docker
+  loop: "{{ extra_groups }}"
+  ansible.builtin.group:
+    name: "{{ item }}"
+
+- name: Setup users
+  loop: "{{ users }}"
+  ansible.builtin.user:
+    state: present
+    name: "{{ item.name }}"
+    system: "{{ item.system }}"
+    shell: "{{ item.shell }}"
+    create_home: true
+    password: "{{ (item.password != '!' or item.password != '*') | ternary(item.password | password_hash('sha512'), item.password) }}"
+    groups: "{{ item.groups + extra_groups }}"
+
+- name: Add SSH public key to users
+  loop: "{{ users }}"
+  ansible.posix.authorized_key:
+    user: "{{ item.name }}"
+    state: present
+    exclusive: true
+    key: "{{ item.ssh_keys.pub }}"
+    key_options: "{{ 'command=\"' + robo_allowed_commands | join('; ') + '\"' if robo_allowed_commands is defined and item.name == 'robo' else omit }}"
+
+- name: Disable password authentication for SSH
+  become: true
+  notify: Restart sshd
+  ansible.builtin.lineinfile:
+    path: /etc/ssh/sshd_config
+    regexp: '^#?PasswordAuthentication'
+    line: 'PasswordAuthentication no'
+    state: present
+
+- name: Allow authentication via ssh keys
+  become: true
+  notify: Restart sshd
+  ansible.builtin.lineinfile:
+    path: /etc/ssh/sshd_config
+    regexp: '^#?PubkeyAuthentication'
+    line: 'PubkeyAuthentication yes'
+    state: present

roles/common/vars/main.yaml

@@ -0,0 +1,33 @@
+# yaml-language-server: $schema=https://raw.githubusercontent.com/ansible/ansible-lint/refs/heads/main/src/ansiblelint/schemas/vars.json
+---
+users:
+  - name: aleidk
+    shell: /bin/sh
+    system: false
+    groups:
+      - wheel
+    password: !vault |
+              $ANSIBLE_VAULT;1.1;AES256
+              36376130326263316235653963663466333735313338636630326230636636663938313532356231
+              6234333364653934653665353438353562313838616236310a323738346137373061366433306238
+              61333637663466646631353032613431333263336436313261373637356562343834326563643637
+              3861326166353836330a333563623030346563353264313333363132633238636463623761313635
+              3432
+    ssh_keys:
+      priv: "{{ lookup('file', 'files/aleidk_key') }}"
+      pub: "{{ lookup('file', 'files/aleidk_key.pub') }}"
+
+  - name: robo
+    shell: /bin/sh
+    system: true
+    groups: []
+    password: !vault |
+              $ANSIBLE_VAULT;1.1;AES256
+              65633362306631393332636364393639336561353261613037346363633737363236616262613538
+              3061643566343533393838613261616362373965616538650a396638623038666635323739393038
+              66313636633963306663383631376264383761343534643465663135646162643339336266646264
+              6433373636316237330a343139363432653737376465633538636639626238613266646664366166
+              3136
+    ssh_keys:
+      priv: "{{ lookup('file', 'files/robo_key') }}"
+      pub: "{{ lookup('file', 'files/robo_key.pub') }}"