Add os_config role

group_vars/all/secrets.yml

@@ -1,27 +1,30 @@
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playbook.yml

@@ -1,10 +1,18 @@
 ---
-- name: Deploy homeserver
+- name: Deploy self-hosted services
   hosts: all
   gather_facts: false
   become: true
+  vars:
+    hdd_mount_point: /opt/storage
+    ssd_mount_point: /opt/pi-ssd
+
+    timezone: Europe/Copenhagen
 
   tasks:
+    - name: Run OS configuration role
+      import_role:
+        name: os_config
     - name: Run Docker role
       import_role:
         name: docker

roles/docker/defaults/main.yml

@@ -1,7 +1,6 @@
 ---
 base_domain: sapti.me
-base_volume: /opt/storage/apps
-timezone: Europe/Copenhagen
+base_volume: "{{ hdd_mount_point }}/apps"
 
 services:
   caddy:

roles/docker/tasks/main.yml

@@ -13,11 +13,12 @@
 
 - name: Install Docker
   apt:
-    name: "{{ item }}"
+    name: "{{ pkgs }}"
     state: present
-  loop:
-    - docker-ce
-    - docker-compose-plugin
+  vars:
+    pkgs:
+      - docker-ce
+      - docker-compose-plugin
 
 - name: Create docker-compose symlink
   file:
@@ -25,18 +26,26 @@
     name: /usr/local/bin/docker-compose
     state: link
 
-- name: Install Python bindings for Docker Compose
+- name: Install Python bindings for Docker
   pip:
-    executable: pip3
-    name: docker-compose
+    name: "{{ pkgs }}"
     state: present
+    executable: pip3
+  vars:
+    pkgs:
+      - docker
+      - docker-compose
 
-- name: Create base directory for Docker volumes
-  file:
-    name: "{{ base_volume }}"
-    owner: "{{ ansible_user }}"
-    mode: u=rwx,g=rx,o=rx
-    state: directory
+- name: Start but disable Docker daemon
+  service:
+    name: "{{ unit }}"
+    enabled: false
+    state: started
+  loop:
+    - docker.socket
+    - docker.service
+  loop_control:
+    loop_var: unit
 
 - name: Set up Docker services
   import_tasks: services.yml

roles/docker/tasks/services.yml

@@ -1,4 +1,12 @@
+# vim: ft=yaml.ansible
 ---
+- name: Create base directory for Docker volumes
+  file:
+    name: "{{ base_volume }}"
+    owner: "{{ ansible_user }}"
+    mode: u=rwx,g=rx,o=rx
+    state: directory
+
 - name: Deploy services
   include_tasks: "services/{{ item.service.file }}"
   loop: "{{ services | dict2items(value_name='service') }}"

roles/docker/tasks/services/caddy.yml

@@ -1,3 +1,4 @@
+# vim: ft=yaml.ansible
 ---
 - name: Create Caddy volume directories
   file:
@@ -31,3 +32,5 @@
       - dac_override
     cap_drop:
       - all
+
+# vim: ft=yaml.ansible

roles/docker/tasks/services/emby.yml

@@ -1,3 +1,4 @@
+# vim: ft=yaml.ansible
 ---
 - name: Create Emby volume directories
   file:
@@ -25,6 +26,6 @@
       - "{{ services.emby.volume }}/tvshows:/mnt/share1:rw"
       - "{{ services.emby.volume }}/movies:/mnt/share2:rw"
     published_ports:
-      - "8096:8096"
+      - '8096:8096'
     devices:
       - /dev/vchiq:/dev/vchiq  # MMAL/OMX on Raspberry Pi

roles/docker/tasks/services/monerod.yml

@@ -1,3 +1,4 @@
+# vim: ft=yaml.ansible
 ---
 - name: Create Docker volume for Monero blockchain data
   docker_volume:
@@ -11,11 +12,11 @@
     volumes:
       - monerod_data:/home/monero/.bitmonero:rw
     command:
-      - --rpc-restricted-bind-ip=0.0.0.0
-      - --rpc-restricted-bind-port=18089
+      - '--rpc-restricted-bind-ip=0.0.0.0'
+      - '--rpc-restricted-bind-port=18089'
       - --no-igd
       - --no-zmq
       - --enable-dns-blocklist
     published_ports:
-      - "18080:18080"
-      - "127.0.0.1:18081:18089"
+      - '18080:18080'
+      - '127.0.0.1:18081:18089'

roles/docker/tasks/services/nextcloud.yml

@@ -1,3 +1,4 @@
+# vim: ft=yaml.ansible
 ---
 - name: Create Nextcloud volume directories
   file:
@@ -34,22 +35,22 @@
           image: "mariadb:{{ services.nextcloud.mariadb_version }}"
           restart: unless-stopped
           command:
-            - --transaction-isolation=READ-COMMITTED
+            - '--transaction-isolation=READ-COMMITTED'
             - --log-bin
-            - --binlog-format=ROW
-            - --innodb_read_only_compressed=OFF
+            - '--binlog-format=ROW'
+            - '--innodb_read_only_compressed=OFF'
           environment:
             MYSQL_DATABASE: nextcloud
             MYSQL_USER: nextcloud
-            MYSQL_PASSWORD: "{{ secrets.nextcloud.mysql.pw }}"
-            MYSQL_ROOT_PASSWORD: "{{ secrets.nextcloud.mysql.pw }}"
+            MYSQL_PASSWORD: "{{ secrets.nextcloud.mysql_pw }}"
+            MYSQL_ROOT_PASSWORD: "{{ secrets.nextcloud.mysql_pw }}"
           volumes:
             - "{{ services.nextcloud.volume }}/db:/var/lib/mysql:rw"
 
         redis:
           image: "redis:{{ services.nextcloud.redis_version }}"
           restart: unless-stopped
-          command: "redis-server --requirepass={{ secrets.nextcloud.redis.pw }}"
+          command: "redis-server --requirepass={{ secrets.nextcloud.redis_pw }}"
           tmpfs:
             - /var/lib/redis
 
@@ -70,9 +71,9 @@
             MYSQL_HOST: mysql
             MYSQL_DATABASE: nextcloud
             MYSQL_USER: nextcloud
-            MYSQL_PASSWORD: "{{ secrets.nextcloud.mysql.pw }}"
+            MYSQL_PASSWORD: "{{ secrets.nextcloud.mysql_pw }}"
             REDIS_HOST: redis
-            REDIS_HOST_PASSWORD: "{{ secrets.nextcloud.redis.pw }}"
+            REDIS_HOST_PASSWORD: "{{ secrets.nextcloud.redis_pw }}"
             PHP_MEMORY_LIMIT: 2G
             PHP_UPLOAD_LIMIT: 16G
           volumes:
@@ -80,7 +81,7 @@
             - "{{ services.nextcloud.volume }}/apache2/apache2.conf:/etc/apache2/apache2.conf:ro"
             - "{{ services.nextcloud.volume }}/apache2/remoteip.conf:/etc/apache2/conf-enabled/remoteip.conf:ro"
           ports:
-            - "127.0.0.1:8080:80"
+            - '127.0.0.1:8080:80'
           depends_on:
             - mysql
             - redis

roles/docker/tasks/services/restic.yml

@@ -1,3 +1,4 @@
+# vim: ft=yaml.ansible
 ---
 - name: Deploy Restic with Docker Compose
   docker_compose:
@@ -14,7 +15,7 @@
             RUN_ON_STARTUP: false
             BACKUP_CRON: '0 30 3 * * *'
             RESTIC_REPOSITORY: "b2:{{ secrets.restic.b2.bucket }}:{{ services.restic.repo }}"
-            RESTIC_PASSWORD: "{{ secrets.restic.pw }}"
+            RESTIC_PASSWORD: "{{ secrets.restic.repo_pw }}"
             RESTIC_BACKUP_SOURCES: /mnt/volumes
             RESTIC_BACKUP_ARGS: >-
               --tag docker-volumes
@@ -40,7 +41,7 @@
             RUN_ON_STARTUP: false
             PRUNE_CRON: '0 0 4 * * *'
             RESTIC_REPOSITORY: "b2:{{ secrets.restic.b2.bucket }}:{{ services.restic.repo }}"
-            RESTIC_PASSWORD: "{{ secrets.restic.pw }}"
+            RESTIC_PASSWORD: "{{ secrets.restic.repo_pw }}"
             RESTIC_PRUNE_ARGS: >-
               --verbose
             B2_ACCOUNT_ID: "{{ secrets.restic.b2.id }}"
@@ -54,7 +55,7 @@
             RUN_ON_STARTUP: false
             CHECK_CRON: '0 30 4 * * *'
             RESTIC_REPOSITORY: "b2:{{ secrets.restic.b2.bucket }}:{{ services.restic.repo }}"
-            RESTIC_PASSWORD: "{{ secrets.restic.pw }}"
+            RESTIC_PASSWORD: "{{ secrets.restic.repo_pw }}"
             RESTIC_CHECK_ARGS: >-
               --verbose
             B2_ACCOUNT_ID: "{{ secrets.restic.b2.id }}"

roles/docker/tasks/services/snowflake.yml

@@ -1,3 +1,4 @@
+# vim: ft=yaml.ansible
 ---
 - name: Deploy snowflake-proxy Docker container
   docker_container:

roles/docker/tasks/services/watchtower.yml

@@ -1,3 +1,4 @@
+# vim: ft=yaml.ansible
 ---
 - name: Deploy Watchtower Docker container
   docker_container:

roles/docker/tasks/services/wireguard.yml

@@ -1,3 +1,4 @@
+# vim: ft=yaml.ansible
 ---
 - name: Create Wireguard volume directory
   file:

roles/docker/templates/Caddyfile.j2

@@ -3,7 +3,7 @@
 }
 
 {{ services.nextcloud.domain }} {
-    tls {{ secrets.tls.email }}
+    tls {{ secrets.tls_email }}
 
     rewrite /.well-known/caldav /remote.php/dav
     rewrite /.well-known/carddav /remote.php/dav
@@ -13,39 +13,27 @@
         -Server
     }
 
-    log {
-        output discard
-    }
-
     reverse_proxy localhost:8080
 }
 
 {{ services.emby.domain }} {
-    tls {{ secrets.tls.email }}
+    tls {{ secrets.tls_email }}
 
     header {
         Strict-Transport-Security "max-age=31536000; includeSubDomains; preload"
         -Server
     }
 
-    log {
-        output discard
-    }
-
     reverse_proxy localhost:8096
 }
 
 {{ services.monerod.domain }}:18089 {
-    tls {{ secrets.tls.email }}
+    tls {{ secrets.tls_email }}
 
     header {
         Strict-Transport-Security "max-age=31536000; includeSubDomains; preload"
         -Server
     }
 
-    log {
-        output discard
-    }
-
     reverse_proxy localhost:18081
 }

roles/docker/templates/daemon.json.j2

@@ -0,0 +1,11 @@
+{
+  "data-root": "{{ ssd_mount_point }}/docker-runtime",
+  "default-address-pools": [
+    {
+      "base": "172.17.0.0/16",
+      "size": 24
+    }
+  ],
+  "ipv6": true,
+  "fixed-cidr-v6": "fd00::/80"
+}

roles/os_config/defaults/main.yml

@@ -0,0 +1,2 @@
+---
+ssh_key: ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPd/4fQV7CL8/KVwbo/phiV5UdXFBIDlkZ+ps8C7FeRf

roles/os_config/tasks/luks.yml

@@ -0,0 +1,3 @@
+# vim: ft=yaml.ansible
+---
+

roles/os_config/tasks/main.yml

@@ -0,0 +1,16 @@
+---
+- name: Configure system packages
+  import_tasks:
+    - pkgs.yml
+
+- name: Configure firewall
+  import_tasks:
+    - ufw.yml
+
+- name: Configure disk encryption
+  import_tasks:
+    - luks.yml
+
+- name: Configure SSH
+  import_tasks:
+    - ssh.yml

roles/os_config/tasks/pkgs.yml

@@ -0,0 +1,17 @@
+# vim: ft=yaml.ansible
+---
+- name: Upgrade system packages
+  apt: 
+    update_cache: true
+    upgrade: full
+
+- name: Install packages via apt
+  apt:
+    name: "{{ pkgs }}"
+    state: present
+  vars:
+    pkgs:
+      - python3-pip
+      - apparmor
+      - haveged
+      - ufw

roles/os_config/tasks/ssh.yml

@@ -0,0 +1,36 @@
+# vim: ft=yaml.ansible
+---
+- name: Add public SSH key to default user
+  authorized_key:
+    user: "{{ ansible_user }}"
+    key: "{{ ssh_key }}"
+    exclusive: true
+
+- name: Allow SSH login with public keys
+  lineinfile:
+    regexp: '^#?PubkeyAuthentication '
+    line: PubkeyAuthentication yes
+    dest: /etc/ssh/sshd_config
+  register: ssh_pubkey
+
+- name: Disallow SSH login with password
+  lineinfile:
+    regexp: '^#?PasswordAuthentication '
+    line: PasswordAuthentication no
+    dest: /etc/ssh/sshd_config
+  register: ssh_pw
+
+- name: Disallow root login over SSH
+  lineinfile:
+    regexp: '^#?PermitRootLogin '
+    line: PermitRootLogin no
+    dest: /etc/ssh/sshd_config
+  register: ssh_root
+
+- name: Restart sshd
+  service:
+    name: sshd
+    state: restarted
+  when: (ssh_pubkey is defined and ssh_pubkey.changed) or
+        (ssh_pw is defined and ssh_pw.changed) or
+        (ssh_root is defined and ssh_root.changed)

roles/os_config/tasks/ufw.yml

@@ -0,0 +1,20 @@
+# vim: ft=yaml.ansible
+---
+- name: Allow necessary ports in UFW
+  community.general.ufw:
+    rule: allow
+    port: "{{ item.port }}"
+    proto: "{{ item.proto | default('tcp') }}"
+  loop:
+    - port: 22     # SSH
+    - port: 80     # HTTP
+    - port: 443    # HTTPS
+    - port: 18080  # monerod P2P
+    - port: 18089  # monerod RPC
+    - port: 51820  # Wireguard
+      proto: udp
+
+- name: Enable UFW
+  community.general.ufw: 
+    state: enabled
+    policy: deny