Initial base playbooks

Signed-off-by: Nis Wechselberg <enbewe@enbewe.de>

.yamllint.yml

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+---
+extends: 'default'
+
+ignore:
+  - '.ansible/'
+
+rules:
+  braces:
+    max-spaces-inside: 1
+  comments:
+    min-spaces-from-content: 1
+  comments-indentation: false
+  document-start:
+    present: true
+  line-length:
+    max: 120
+  octal-values:
+    forbid-implicit-octal: true
+    forbid-explicit-octal: true
+  quoted-strings:
+    required: true
+    quote-type: 'single'
+  truthy:
+    allowed-values:
+      - 'true'
+      - 'false'

CHANGELOG.md

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+# Changelog
+
+## 1.0.0
+
+* Initial Release

README.md

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+# Ansible Collection - enbewe.base
+
+Collecion of base things for common deployment of systems.
+
+## Playbooks
+
+### enbewe.base.known_hosts
+
+Uses the (host) variable `ssh_ed25519` to register SSH host keys in the known hosts of localhost.
+
+### enbewe.base.access
+
+Install ssh keys as authorized keys in the target system and also configures sudo rights to the ansible user.
+Afterwards tightens ssh security to disallow password logins.
+
+### enbewe.base.motd
+
+Remove components from motd, that are not needed.
+
+### enbewe.base.ubuntu_pro
+
+Configures the enrollment of the machine in Ubuntu Pro, enables the desired services and disables unwanted services.
+
+### enbewe.base.update
+
+Install available updates from package management.

galaxy.yml

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+---
+### REQUIRED
+# The namespace of the collection. This can be a company/brand/organization or product namespace under which all
+# content lives. May only contain alphanumeric lowercase characters and underscores. Namespaces cannot start with
+# underscores or numbers and cannot contain consecutive underscores
+namespace: 'enbewe'
+
+# The name of the collection. Has the same character restrictions as 'namespace'
+name: 'base'
+
+# The version of the collection. Must be compatible with semantic versioning
+version: '1.0.0'
+
+# The path to the Markdown (.md) readme file. This path is relative to the root of the collection
+readme: 'README.md'
+
+# A list of the collection's content authors. Can be just the name or in the format 'Full Name <email> (url)
+# @nicks:irc/im.site#channel'
+authors:
+  - 'Nis Wechselberg <enbewe+ansible@enbewe.de>'
+
+### OPTIONAL but strongly recommended
+# A short summary description of the collection
+description: 'Small base playbooks used for ansible deployments'
+
+# Either a single license or a list of licenses for content inside of a collection. Ansible Galaxy currently only
+# accepts L(SPDX,https://spdx.org/licenses/) licenses. This key is mutually exclusive with 'license_file'
+license:
+  - 'MIT'
+
+# A list of tags you want to associate with the collection for indexing/searching. A tag name has the same character
+# requirements as 'namespace' and 'name'
+tags:
+  - 'linux'
+
+# Collections that this collection requires to be installed for it to be usable. The key of the dict is the
+# collection label 'namespace.name'. The value is a version range
+# L(specifiers,https://python-semanticversion.readthedocs.io/en/latest/#requirement-specification). Multiple version
+# range specifiers can be set and are separated by ','
+dependencies:
+  ansible.posix: '>=2.0.0'
+
+# The URL of the originating SCM repository
+repository: 'https://git.enbewe.de/Coding/ansible-collection-base'
+
+# The URL to any online docs
+# documentation: http://docs.example.com
+
+# The URL to the homepage of the collection/project
+# homepage: http://example.com
+
+# The URL to the collection issue tracker
+# issues: http://example.com/issue/tracker
+
+# A list of file glob-like patterns used to filter any files or directories that should not be included in the build
+# artifact. A pattern is matched from the relative path of the file or directory of the collection directory. This
+# uses 'fnmatch' to match the files or directories. Some directories and files like 'galaxy.yml', '*.pyc', '*.retry',
+# and '.git' are always filtered. Mutually exclusive with 'manifest'
+# build_ignore: []
+
+# A dict controlling use of manifest directives used in building the collection artifact. The key 'directives' is a
+# list of MANIFEST.in style
+# L(directives,https://packaging.python.org/en/latest/guides/using-manifest-in/#manifest-in-commands). The key
+# 'omit_default_directives' is a boolean that controls whether the default directives are used. Mutually exclusive
+# with 'build_ignore'
+# manifest: null

meta/runtime.yml

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+---
+# Collections must specify a minimum required ansible version to upload
+# to galaxy
+requires_ansible: '>=2.18.0'
+
+# Content that Ansible needs to load from another location or that has
+# been deprecated/removed
+# plugin_routing:
+#   action:
+#     redirected_plugin_name:
+#       redirect: ns.col.new_location
+#     deprecated_plugin_name:
+#       deprecation:
+#         removal_version: "4.0.0"
+#         warning_text: |
+#           See the porting guide on how to update your playbook to
+#           use ns.col.another_plugin instead.
+#     removed_plugin_name:
+#       tombstone:
+#         removal_version: "2.0.0"
+#         warning_text: |
+#           See the porting guide on how to update your playbook to
+#           use ns.col.another_plugin instead.
+#   become:
+#   cache:
+#   callback:
+#   cliconf:
+#   connection:
+#   doc_fragments:
+#   filter:
+#   httpapi:
+#   inventory:
+#   lookup:
+#   module_utils:
+#   modules:
+#   netconf:
+#   shell:
+#   strategy:
+#   terminal:
+#   test:
+#   vars:
+
+# Python import statements that Ansible needs to load from another location
+# import_redirection:
+#   ansible_collections.ns.col.plugins.module_utils.old_location:
+#     redirect: ansible_collections.ns.col.plugins.module_utils.new_location
+
+# Groups of actions/modules that take a common set of options
+# action_groups:
+#   group_name:
+#     - module1
+#     - module2

playbooks/access.yml

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+---
+- name: 'Configure access permissions'
+  hosts: 'all'
+
+  vars:
+    ssh_public_keys_exclusive: true
+
+  tasks:
+    - name: 'Install ssh keys in target system'
+      ansible.posix.authorized_key:
+        user: '{{ ansible_user }}'
+        key: '{{ ssh_public_keys }}'
+        exclusive: '{{ ssh_public_keys_exclusive }}'
+
+    - name: 'Allow ansible user to use sudo'
+      become: true
+      ansible.builtin.template:
+        src: 'sudoers.d/ansible.j2'
+        dest: '/etc/sudoers.d/ansible'
+        owner: 'root'
+        group: 'root'
+        mode: 'u=rw,g=r,o='
+
+    - name: 'Disallow ssh password login'
+      become: true
+      ansible.builtin.lineinfile:
+        path: '/etc/ssh/sshd_config'
+        regexp: '^#?PasswordAuthentication '
+        line: 'PasswordAuthentication no'
+
+    - name: 'Disallow ssh root login without key'
+      become: true
+      ansible.builtin.lineinfile:
+        path: '/etc/ssh/sshd_config'
+        regexp: '^#?PermitRootLogin '
+        line: 'PermitRootLogin prohibit-password'

playbooks/known_hosts.yml

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+---
+- name: 'Install SSH keys as known hosts'
+  hosts: 'all'
+  serial: 1
+  gather_facts: false
+
+  tasks:
+    - name: 'Register host key'
+      delegate_to: 'localhost'
+      throttle: 1
+      when: 'ssh_ed25519'
+      ansible.builtin.known_hosts:
+        name: '{{ inventory_hostname }}'
+        key: '{{ inventory_hostname }} ssh-ed25519 {{ ssh_ed25519 }}'

playbooks/motd.yml

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+---
+- name: 'Configure Motd components'
+  hosts: 'all'
+
+  tasks:
+    - name: 'Remove components from motd, that are not needed'
+      become: true
+      ansible.builtin.file:
+        state: 'file'
+        path: '/etc/update-motd.d/{{ item }}'
+        mode: 'u=rw,g=r,o=r'
+      loop:
+        - '10-help-text'
+        - '50-motd-news'

playbooks/templates/sudoers.d/ansible.j2

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+# {{ ansible_managed }}
+
+# Allow user for ansible to use sudo without password
+{{ ansible_user }}    ALL=(ALL:ALL) NOPASSWD: ALL

playbooks/ubuntu_pro.yml

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+---
+- name: 'Configure Ubuntu Pro subscription'
+  hosts: 'ubuntu_pro'
+
+  tasks:
+    - name: 'Install required software'
+      become: true
+      ansible.builtin.apt:
+        name: 'ubuntu-advantage-tools'
+        state: 'present'
+
+    - name: 'Register this host on Ubuntu Pro (pro attach <token>)'
+      become: true
+      ansible.builtin.command: 'pro attach {{ ubuntu_pro_token }}'
+      register: 'reg_pro_attach'
+      changed_when: 'reg_pro_attach.rc == 0'
+      failed_when:
+        - 'reg_pro_attach.rc != 0'
+        - '"This machine is already attached to" not in reg_pro_attach.stderr_lines[0]'
+
+    - name: 'Enable selected Ubuntu Pro services'
+      become: true
+      ansible.builtin.command: 'pro enable {{ item }}'
+      register: 'reg_pro_enable'
+      changed_when: 'reg_pro_enable.rc == 0'
+      failed_when:
+        - 'reg_pro_enable.rc != 0'
+        - '"is already enabled" not in reg_pro_enable.stdout_lines[1]'
+        - '"is not available for" not in reg_pro_enable.stdout_lines[1]'
+      loop: '{{ ubuntu_pro_enabled_services }}'
+
+    - name: 'Disable selected Ubuntu Pro services'
+      become: true
+      ansible.builtin.command: 'pro disable {{ item }}'
+      register: 'reg_pro_disable'
+      changed_when: 'reg_pro_disable.rc == 0'
+      failed_when:
+        - 'reg_pro_disable.rc != 0'
+        - '"is not currently enabled not" in reg_pro_disable.stdout_lines[0]'
+      loop: '{{ ubuntu_pro_disabled_services }}'

playbooks/update.yml

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+---
+- name: 'Install updates through package management'
+  hosts: 'all'
+
+  pre_tasks:
+    - name: 'Update package cache if needed'
+      become: true
+      ansible.builtin.apt:
+        update_cache: true
+        cache_valid_time: 3600
+
+  tasks:
+    - name: 'Install all available update'
+      become: true
+      ansible.builtin.apt:
+        upgrade: 'dist'
+
+    - name: 'Remove unneeded dependencies and leftover packages from cache'
+      become: true
+      ansible.builtin.apt:
+        autoclean: true
+        autoremove: true