init commit

.gitignore

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+# Secrets and sensitive inventory
+inventory/*.ini
+inventory/host_vars/
+inventory/group_vars/*_vault.yml
+.vault_pass.txt
+
+# SSH keys
+*.pem
+id_rsa*
+id_ed25519*
+
+# Local config
+.ansible.cfg

README.md

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+# semaphore
+
+Ansible GUI for infrastructure management

playbooks/add-gitea-ssh-key.yml

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+---
+- name: Add SSH key from Gitea
+  hosts: all
+  become: true
+
+  tasks:
+    - name: Ensure .ssh directory exists
+      file:
+        path: "/home/{{ username }}/.ssh"
+        state: directory
+        owner: "{{ username }}"
+        group: "{{ username }}"
+        mode: '0700'
+
+    - name: Add public key from Gitea to authorized_keys
+      ansible.posix.authorized_key:
+        user: "{{ username }}"
+        key: "https://gitea.purpleraft.com/{{ username }}.keys"
+        state: present
+        manage_dir: false  # we already ensured it

playbooks/add-usertogroup.yml

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+---
+- name: Ensure user is in specified group
+  hosts: all
+  become: true
+  gather_facts: false
+
+  vars:
+    check_user: "{{ check_user }}"
+    check_group: "{{ check_group }}"
+
+  tasks:
+    - name: Ensure group exists
+      group:
+        name: "{{ check_group }}"
+        state: present
+
+    - name: Check if user exists
+      getent:
+        database: passwd
+        key: "{{ check_user }}"
+      register: user_check
+      changed_when: false
+      failed_when: user_check.ansible_facts.getent_passwd[check_user] is not defined
+
+    - name: Add user to group (non-destructively)
+      user:
+        name: "{{ check_user }}"
+        groups: "{{ check_group }}"
+        append: true

playbooks/check-reboot-needed.yml

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+- name: Check if reboot is required
+  hosts: all
+  gather_facts: false
+  become: true
+  vars:
+    reboot_machines: false  # default, override via --extra-vars
+
+  tasks:
+    - name: Check for /var/run/reboot-required
+      stat:
+        path: /var/run/reboot-required
+      register: reboot_flag
+
+    - name: Display reboot status
+      debug:
+        msg: "{{ inventory_hostname }} {{ 'REQUIRES' if reboot_flag.stat.exists else 'does NOT require' }} a reboot."
+
+    - name: Reboot if required and reboot_machines flag is true
+      reboot:
+        msg: "Rebooting due to /var/run/reboot-required"
+        pre_reboot_delay: 5
+      when:
+        - reboot_flag.stat.exists
+        - reboot_machines | bool

playbooks/check-time-sync.yml

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+- name: Quick check of time offset using ntpdate
+  hosts: all
+  become: true
+  gather_facts: false
+  vars:
+    ntp_check_target: "pool.ntp.org"
+
+  tasks:
+
+    - name: Ensure ntpdate is installed
+      apt:
+        name: ntpdate
+        state: present
+        update_cache: true
+
+    - name: Query time offset from {{ ntp_check_target }}
+      command: "ntpdate -q {{ ntp_check_target }}"
+      register: ntp_offset
+      changed_when: false
+      failed_when: ntp_offset.rc != 0
+
+    - name: Try to extract final offset line
+      set_fact:
+        ntp_offset_summary: "{{ ntp_offset.stdout_lines | select('search', 'adjust time') | list | first | default('No offset line found') }}"
+
+    - name: Show full ntpdate output per host
+      debug:
+        msg: |
+          [{{ inventory_hostname }}]
+          Offset summary: {{ ntp_offset_summary }}
+          Raw output:
+          {{ ntp_offset.stdout_lines | join('\n') }}

playbooks/check-useringroup.yml

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+---
+- name: Check if user is in specified group
+  hosts: all
+  gather_facts: false
+  become: true
+
+  vars_prompt:
+    - name: check_user
+      prompt: "Enter the username to check"
+      private: no
+
+    - name: check_group
+      prompt: "Enter the group to verify membership"
+      private: no
+
+  tasks:
+    - name: Get groups for specified user
+      ansible.builtin.command: "id -nG {{ check_user }}"
+      register: user_groups
+      changed_when: false
+      failed_when: user_groups.rc != 0
+
+    - name: Set fact if user is in group
+      set_fact:
+        user_in_group: "{{ check_group in user_groups.stdout.split() }}"
+
+    - name: Report user group membership
+      debug:
+        msg: >
+          User '{{ check_user }}' {{ 'IS' if user_in_group else 'IS NOT' }}
+          in the '{{ check_group }}' group on {{ inventory_hostname }}.

playbooks/check_unallocated_disk.yml

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+---
+- name: Check unallocated disk space
+  hosts: all
+  become: true
+  gather_facts: false
+
+  tasks:
+
+    - name: Get block device sizes
+      command: lsblk -b -o NAME,SIZE,TYPE -dn
+      register: lsblk_output
+
+    - name: Parse lsblk output into structured facts
+      set_fact:
+        disks: "{{ disks | default({}) | combine({ item.split()[0]: item.split()[1]|int }) }}"
+      loop: "{{ lsblk_output.stdout_lines }}"
+      when: "'disk' in item"
+
+    - name: Get partition sizes for each disk
+      command: lsblk -b -o NAME,SIZE,TYPE -n
+      register: partition_output
+
+    - name: Initialize disk usage map
+      set_fact:
+        used_space: "{{ used_space | default({}) }}"
+
+    - name: Sum partition sizes under each disk
+      set_fact:
+        used_space: >-
+          {{
+            used_space | combine({
+              (item.0): (used_space[item.0]|default(0)) + (item.1.split()[1]|int)
+            })
+          }}
+      with_nested:
+        - "{{ disks.keys() | list }}"
+        - "{{ partition_output.stdout_lines }}"
+      when: item.1.startswith(item.0) and 'part' in item.1
+
+    - name: Show disk usage summary
+      debug:
+        msg: >-
+          Disk /dev/{{ item.key }}: Total {{ item.value|int // 1024**3 }} GB,
+          Used {{ used_space[item.key]|default(0)|int // 1024**3 }} GB,
+          Unallocated {{ (item.value|int - used_space[item.key]|default(0)|int) // 1024**3 }} GB
+      loop: "{{ disks|dict2items }}"

playbooks/configure-chrony.yml

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+- name: Configure Chrony NTP Client
+  hosts: all
+  become: true
+  tasks:
+    - name: Ensure chrony is installed
+      apt:
+        name: chrony
+        state: present
+        update_cache: true
+
+    - name: Disable systemd-timesyncd if present
+      systemd:
+        name: systemd-timesyncd
+        enabled: false
+        state: stopped
+      ignore_errors: true
+
+    - name: Ensure sources.d directory exists
+      file:
+        path: /etc/chrony/sources.d
+        state: directory
+        mode: "0755"
+
+    - name: Deploy atomic source
+      copy:
+        src: templates/ntp/atomic.sources
+        dest: /etc/chrony/sources.d/atomic.sources
+        owner: root
+        group: root
+        mode: "0644"
+
+    - name: Deploy navy source
+      copy:
+        src: templates/ntp/navy.sources
+        dest: /etc/chrony/sources.d/navy.sources
+        owner: root
+        group: root
+        mode: "0644"
+
+    - name: Deploy fallback pool
+      copy:
+        src: templates/ntp/fallback.sources
+        dest: /etc/chrony/sources.d/fallback.sources
+        owner: root
+        group: root
+        mode: "0644"
+
+    - name: Reload NTP sources
+      command: chronyc reload sources
+      register: reload_output
+      changed_when: "'Sources reloaded' in reload_output.stdout"

playbooks/create-user.yml

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+---
+- name: Create a user with SSH access and optional groups
+  hosts: all
+  become: true
+  gather_facts: false
+
+  vars:
+    username: "{{ username }}"
+    authorized_key: "{{ authorized_key }}"
+    extra_groups: "{{ extra_groups | default('') }}"
+    extra_groups_list: "{{ extra_groups.split(',') | map('trim') | list if extra_groups else [] }}"
+    default_shell: "{{ default_shell | default('/bin/bash') }}"
+
+  tasks:
+    - name: Ensure each extra group exists
+      ansible.builtin.group:
+        name: "{{ item }}"
+        state: present
+      loop: "{{ extra_groups_list }}"
+      when: extra_groups_list | length > 0
+
+    - name: Ensure user account exists
+      ansible.builtin.user:
+        name: "{{ username }}"
+        shell: "{{ default_shell }}"
+        groups: "{{ extra_groups_list }}"
+        append: true
+        create_home: true
+        state: present
+
+    - name: Set authorized SSH key
+      ansible.builtin.authorized_key:
+        user: "{{ username }}"
+        key: "{{ authorized_key }}"
+        state: present

playbooks/deploy_sshd_config.yml

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+---
+- name: Deploy complete SSH server configuration
+  hosts: all
+  become: true
+  gather_facts: false
+
+  tasks:
+    - name: Deploy base /etc/ssh/sshd_config file
+      template:
+        src: templates/sshd/sshd_config.j2
+        dest: /etc/ssh/sshd_config
+        owner: root
+        group: root
+        mode: "0644"
+      notify: Reload SSH
+
+    - name: Deploy hardened global ssh config include
+      template:
+        src: templates/sshd/00-global.conf.j2
+        dest: /etc/ssh/sshd_config.d/00-global.conf
+        owner: root
+        group: root
+        mode: "0644"
+      notify: Reload SSH
+
+    - name: Deploy LAN password bypass config include
+      template:
+        src: templates/sshd/99-lan-bypass.conf.j2
+        dest: /etc/ssh/sshd_config.d/99-lan-bypass.conf
+        owner: root
+        group: root
+        mode: "0644"
+      notify: Reload SSH
+
+    - name: Validate sshd configuration syntax
+      command: sshd -t
+      changed_when: false
+
+  handlers:
+    - name: Reload SSH
+      service:
+        name: ssh
+        state: reloaded

playbooks/enable_user_password_reset.yml

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+---
+- name: Allow user to set their own password
+  hosts: all
+  become: true
+  gather_facts: false
+
+  vars:
+    username: "{{ username }}"
+
+  tasks:
+    - name: Unlock password so user can run passwd
+      ansible.builtin.command: "passwd -d {{ username }}"
+      when: not ansible_check_mode
+
+    - name: Ensure user is not locked
+      ansible.builtin.user:
+        name: "{{ username }}"
+        password_lock: false

playbooks/install-essential-tools.yml

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+---
+- name: Ensure essential tools are installed on all hosts
+  hosts: all
+  become: true
+
+  vars:
+    essential_packages:
+      - curl
+      - git
+      - jq
+      - htop
+      - unzip
+      - ca-certificates
+      - net-tools
+      - acl
+
+  tasks:
+    - name: Install common tools
+      apt:
+        name: "{{ essential_packages }}"
+        state: present
+        update_cache: yes

playbooks/install-standard-docker.yml

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+---
+- name: Install Docker using official Docker documentation steps and set up /opt/docker and /srv/docker
+  hosts: docker
+  become: true
+  gather_facts: true
+
+  vars:
+    docker_keyring_path: /etc/apt/keyrings/docker.asc
+    docker_repo_list_path: /etc/apt/sources.list.d/docker.list
+    docker_acl_path: /opt/docker
+    srv_docker_path: /srv/docker
+    docker_data_user: dockeruser
+    docker_data_group: dockerdata
+    docker_data_uid: 2011
+    docker_data_gid: 2011
+
+  tasks:
+    # --- Prereqs ---
+    - name: Ensure required packages are installed
+      apt:
+        name:
+          - ca-certificates
+          - curl
+          - acl # Required for setfacl
+        state: present
+        update_cache: yes
+
+    - name: Ensure keyring directory exists
+      file:
+        path: /etc/apt/keyrings
+        state: directory
+        mode: "0755"
+
+    - name: Download Docker's official GPG key
+      get_url:
+        url: https://download.docker.com/linux/ubuntu/gpg
+        dest: "{{ docker_keyring_path }}"
+        mode: "0644"
+      register: docker_key_download
+
+    - name: Get native architecture (dpkg --print-architecture)
+      command: dpkg --print-architecture
+      register: dpkg_arch_result
+      changed_when: false
+
+    - name: Add Docker repository to Apt sources
+      copy:
+        dest: "{{ docker_repo_list_path }}"
+        content: |
+          deb [arch={{ dpkg_arch_result.stdout }} signed-by={{ docker_keyring_path }}] https://download.docker.com/linux/ubuntu {{ ansible_lsb.codename }} stable
+      notify: Update apt cache
+
+    - name: Flush handlers to update apt cache before install
+      meta: flush_handlers
+
+    # --- Docker Install ---
+    - name: Install Docker packages
+      apt:
+        name:
+          - docker-ce
+          - docker-ce-cli
+          - containerd.io
+          - docker-buildx-plugin
+          - docker-compose-plugin
+        state: present
+        update_cache: no
+
+    - name: Ensure docker group exists
+      group:
+        name: docker
+        state: present
+
+    - name: Ensure Docker service is enabled and running
+      systemd:
+        name: docker
+        enabled: true
+        state: started
+
+    # --- ACL & Folder Standardization ---
+    - name: Ensure Docker base folder exists with correct ownership
+      file:
+        path: "{{ docker_acl_path }}"
+        state: directory
+        owner: root
+        group: docker
+        mode: "0775"
+
+    - name: Set setgid bit on /opt/docker so group is inherited
+      file:
+        path: "{{ docker_acl_path }}"
+        mode: "2775"
+
+    - name: Check for existing default ACL on Docker folder
+      command: getfacl --access --default {{ docker_acl_path }}
+      register: facl_check
+      changed_when: false
+      failed_when: false
+
+    - name: Set default ACL for docker group if not already present
+      command: setfacl -d -m g:docker:rwx {{ docker_acl_path }}
+      when: "'group:docker:rwx' not in facl_check.stdout"
+
+    # --- New: Dedicated Docker Data User/Group and /srv/docker Setup ---
+    - name: Create docker data group with fixed GID
+      group:
+        name: "{{ docker_data_group }}"
+        gid: "{{ docker_data_gid }}"
+        state: present
+        system: yes
+
+    - name: Create docker data user with fixed UID and GID
+      user:
+        name: "{{ docker_data_user }}"
+        uid: "{{ docker_data_uid }}"
+        group: "{{ docker_data_group }}"
+        shell: /usr/sbin/nologin
+        create_home: no
+        system: yes
+        state: present
+
+    - name: Ensure /srv/docker exists with correct ownership
+      file:
+        path: "{{ srv_docker_path }}"
+        state: directory
+        owner: "{{ docker_data_user }}"
+        group: "{{ docker_data_group }}"
+        mode: "0770"
+
+    - name: Set setgid bit on /srv/docker so group is inherited
+      file:
+        path: "{{ srv_docker_path }}"
+        mode: "2770"
+
+    - name: Set default ACL for dockerdata group on /srv/docker
+      ansible.posix.acl:
+        path: "{{ srv_docker_path }}"
+        entity: "{{ docker_data_group }}"
+        etype: group
+        permissions: rwx
+        default: yes
+        state: present
+
+  handlers:
+    - name: Update apt cache
+      apt:
+        update_cache: yes

playbooks/ntpdig-check.yml

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+- name: Check time synchronization using ntpdig (modern method)
+  hosts: all
+  become: true
+  gather_facts: false
+  vars:
+    ntp_check_target: "pool.ntp.org"
+
+  tasks:
+
+    - name: Remove legacy ntpdate package (if present)
+      apt:
+        name: ntpdate
+        state: absent
+
+    - name: Ensure ntpsec-ntpdate is installed (provides ntpdig)
+      apt:
+        name: ntpsec-ntpdate
+        state: present
+        update_cache: true
+
+    - name: Query time offset using ntpdig from {{ ntp_check_target }}
+      command: "ntpdig {{ ntp_check_target }}"
+      register: ntpdig_output
+      changed_when: false
+      failed_when: ntpdig_output.rc != 0
+
+    - name: Parse correct offset and error from ntpdig output
+      set_fact:
+        ntpdig_offset: "{{ ntpdig_output.stdout | regex_search('[+-][0-9]+\\.[0-9]+(?=\\s+\\+/-)', '\\0') | default('N/A') }}"
+        ntpdig_error:  "{{ ntpdig_output.stdout | regex_search('\\+/-\\s+([0-9]+\\.[0-9]+)', '\\1') | default('N/A') }}"
+
+    - name: Show parsed ntpdig result
+      debug:
+        msg: |
+          [{{ inventory_hostname }}]
+          Offset: {{ ntpdig_offset }} sec
+          Estimated error: ±{{ ntpdig_error }} sec
+          Raw output:
+          {{ ntpdig_output.stdout_lines | join('\n') }}

playbooks/reboot.yml

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+---
+- name: Reboot system immediately
+  hosts: all
+  become: true
+  tasks:
+    - name: Reboot the machine
+      ansible.builtin.reboot:
+        msg: "Rebooting"
+        reboot_timeout: 600

playbooks/requirements.yml

@@ -0,0 +1,2 @@
+# Empty role list
+roles: []

playbooks/templates/ntp/atomic.sources

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+server atomicmidnight.internal.purpleraft.com iburst prefer

playbooks/templates/ntp/fallback.sources

@@ -0,0 +1,3 @@
+pool 0.pool.ntp.org iburst
+pool 1.pool.ntp.org iburst
+pool 2.pool.ntp.org iburst

playbooks/templates/ntp/navy.sources

@@ -0,0 +1,2 @@
+server tick.usno.navy.mil iburst prefer
+server tock.usno.navy.mil iburst

playbooks/templates/sshd/00-global.conf.j2

@@ -0,0 +1,25 @@
+Port 22
+AddressFamily inet
+PermitRootLogin no
+
+PasswordAuthentication no
+KbdInteractiveAuthentication no
+ChallengeResponseAuthentication no
+PermitEmptyPasswords no
+
+UsePAM yes
+AllowGroups {{ ssh_access_group | default('sshusers') }}
+
+PubkeyAuthentication yes
+AuthorizedKeysFile .ssh/authorized_keys
+
+X11Forwarding no
+PrintMotd no
+PrintLastLog yes
+
+LoginGraceTime 30s
+MaxAuthTries 3
+MaxSessions 2
+
+AcceptEnv LANG LC_*
+Subsystem sftp /usr/lib/openssh/sftp-server

playbooks/templates/sshd/99-lan-bypass.conf.j2

@@ -0,0 +1,11 @@
+Match Address 10.0.0.0/8
+    PasswordAuthentication yes
+
+Match Address 192.168.0.0/16
+    PasswordAuthentication yes
+
+Match Address 206.202.209.9/32
+    PasswordAuthentication yes
+
+Match Address 100.64.0.0/10
+    PasswordAuthentication yes

playbooks/templates/sshd/sshd_config.j2

@@ -0,0 +1,4 @@
+# Base sshd_config — managed by Ansible
+# Delegates all settings to config fragments
+
+Include /etc/ssh/sshd_config.d/*.conf

playbooks/test.yml

@@ -0,0 +1,13 @@
+- name: Semaphore connection test
+  hosts: all
+  gather_facts: false
+  become: true
+
+  tasks:
+    - name: Print the hostname
+      command: hostname
+      register: result
+
+    - name: Show result
+      debug:
+        msg: "Connected to {{ inventory_hostname }} (hostname: {{ result.stdout }})"

playbooks/update-upgrade.yml

@@ -0,0 +1,13 @@
+- name: Update APT packages
+  hosts: all
+  become: true
+  tasks:
+    - name: Update package cache
+      apt:
+        update_cache: yes
+
+    - name: Upgrade packages
+      apt:
+        upgrade: safe
+        autoremove: yes
+        autoclean: yes