Make process generally smoother

group_vars/all/vars.yml

@@ -17,6 +17,9 @@ escalation_method: doas
 
 sshd_port: 2500
 
+# Username for the priviledged user
+admin_username: maestro
+
 # Username for unpriviledged user
 username: dogeystamp
 
@@ -129,6 +132,9 @@ enable_nameserver: yes
 # SSL ACME (Let's Encrypt)
 enable_ssl: yes
 
+# nginx: necessary for gitea, synapse, wiki, and website.
+enable_webserver: yes
+
 # Git server
 enable_gitea: yes
 

hosts.example

@@ -0,0 +1,7 @@
+# Copy this to hosts.
+
+# fallback_host would be the DHCP address given to the host.
+# It will be changed to local_ip during execution of the connection role.
+
+[sv]
+your_hostname fallback_host=192.168.0.109 ansible_port=2500 ansible_connection=ssh ansible_ssh_private_key_file=~/.ssh/keys/patria

roles/networking/connection/tasks/main.yml

@@ -9,13 +9,36 @@
     enabled: yes
     state: started
 
-- name: Disable existing eth0 connection
+- name: Send script to remove externally managed eth0 connection
-  community.general.nmcli:
+  template:
-    conn_name: eth0
+    src: rmconn.sh
-    state: absent
+    dest: /root/rmconn.sh
-  register: networkmanager_config
+    mode: 700
+  register: rmconn
 
-- name: Set static IP address
+- name: Run rmconn every 30 minutes
+  cron:
+    name: "Ensure eth0 is not externally managed"
+    minute: "*/30"
+    job: "/root/rmconn.sh"
+    state: present
+
+- name: Run rmconn every minute (temporarily)
+  cron:
+    name: "Ensure eth0 is not externally managed (temporary)"
+    minute: "*"
+    job: "/root/rmconn.sh"
+    state: present
+  when: rmconn.changed
+
+- name: Run rmconn at boot
+  cron:
+    name: "Ensure eth0 is not externally managed (at reboot)"
+    special_time: reboot
+    job: "/root/rmconn.sh"
+    state: present
+
+- name: Create NetworkManager connection
   community.general.nmcli:
     dns4: "{{ dns_forward }}"
     dns4_ignore_auto: yes
@@ -25,11 +48,21 @@
     conn_name: wired
     ifname: "{{ interface }}"
     type: ethernet
-  when: networkmanager_config.changed
+  register: nmcli_conf
+  poll: 0
+  async: 1000
 
-- name: Cronjob to remove externally managed eth0 connection
+- name: Set ansible_host to static IP
+  set_fact:
+    ansible_host: "{{ local_ip }}"
+
+- name: Reconnect to new IP
+  wait_for_connection:
+    timeout: 240
+
+  when: nmcli_conf.changed
+
+- name: Remove rmconn task at every minute
   cron:
-    name: "Ensure eth0 is not externally managed"
+    name: "Ensure eth0 is not externally managed (temporary)"
-    minute: "*/10"
+    state: absent
-    job: "/usr/bin/nmcli connection down eth0 > /dev/null 2>&1; /usr/bin/nmcli connection down wired > /dev/null 2>&1; /usr/bin/nmcli connection up wired > /dev/null"
-    state: present

roles/networking/connection/templates/rmconn.sh

@@ -0,0 +1,8 @@
+#!/bin/sh
+
+sleep 30
+
+/usr/bin/nmcli connection down {{ interface }}      > /dev/null 2>&1
+/usr/bin/nmcli connection down "Wired connection 1" > /dev/null 2>&1
+/usr/bin/nmcli connection down wired                > /dev/null 2>&1
+/usr/bin/nmcli connection up   wired                > /dev/null

roles/networking/ssl/tasks/main.yml

@@ -1,6 +1,10 @@
-- name: Ensure nginx is installed
+- name: Ensure relevant packages are installed
   community.general.pacman:
-    name: nginx
+    name:
+      - nginx
+      - certbot
+      - certbot-nginx
+
     state: present
 
 - name: Create directories for ACME
@@ -37,7 +41,7 @@
   register: result
   when: cert_file.stat.exists
 
-- name: Determine whethe certificate should be regenerated
+- name: Determine whether the certificate should be regenerated
   set_fact:
     cert_regen: yes
   when: not cert_file.stat.exists or result.expired | bool

roles/services/gitea/meta/main.yml

@@ -1,2 +0,0 @@
-dependencies:
-  - role: webserver

roles/services/gitea/tasks/main.yml

@@ -18,6 +18,20 @@
     state: present
   notify: Restart gitea
 
+- name: Find owner of data folder
+  stat:
+    path: "{{ dataroot }}/gitea/"
+  register: data_folder
+
+- name: Ensure data folder is under correct owner
+  file:
+    path: "{{ dataroot }}/gitea/"
+    state: directory
+    recurse: yes
+    owner: gitea
+    group: gitea
+  when: data_folder.stat.pw_name != "gitea"
+
 - name: Ensure gitea is stopped
   service:
     name: gitea

roles/services/synapse/handlers/main.yml

@@ -0,0 +1,4 @@
+- name: Restart synapse
+  service:
+    name: synapse
+    state: restarted

roles/services/synapse/meta/main.yml

@@ -1,2 +0,0 @@
-dependencies:
-  - role: webserver

roles/services/synapse/tasks/main.yml

@@ -7,16 +7,19 @@
   copy:
     src: signing.key.secret
     dest: /etc/synapse/signing.key
+  notify: Restart synapse
 
 - name: Deploy matrix homeserver configuration
   template:
     src: homeserver.yaml.j2
     dest: /etc/synapse/homeserver.yaml
+  notify: Restart synapse
 
 - name: Deploy matrix logging configuration
   template:
     src: log.config.j2
     dest: /etc/synapse/log.config
+  notify: Restart synapse
 
 - name: Change systemd unit file to allow access to dataroot
   lineinfile:
@@ -25,6 +28,22 @@
     regexp: "^ReadWritePaths.*"
     line: "ReadWritePaths={{ dataroot }}/synapse/"
     state: present
+  notify: Restart synapse
+
+- name: Find owner of data folder
+  stat:
+    path: "{{ dataroot }}/synapse/"
+  register: data_folder
+
+- name: Ensure data folder is under correct owner
+  file:
+    path: "{{ dataroot }}/synapse/"
+    state: directory
+    recurse: yes
+    owner: synapse
+    group: synapse
+  when: data_folder.stat.pw_name != "synapse"
+  notify: Restart synapse
 
 - name: Enable matrix service
   service:

roles/services/website/meta/main.yml

@@ -1,2 +0,0 @@
-dependencies:
-  - role: webserver

roles/services/wiki/meta/main.yml

@@ -1,2 +0,0 @@
-dependencies:
-  - role: webserver

roles/system/handlers/main.yml

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

roles/system/tasks/essential.yml

@@ -12,6 +12,16 @@
     update_cache: yes
     upgrade: yes
 
+- name: Determine if reboot for kernel update is needed
+  shell:
+    cmd: "if [[ $(pacman -Q linux | cut -d \" \" -f 2) > $(uname -r) ]]; then echo reboot; fi"
+  register: reboot_check
+
+- name: Reboot for kernel update
+  reboot:
+  when:
+    reboot_check.stdout == "reboot"
+
 - name: Install utility packages
   community.general.pacman:
     name: "{{ util_pack }}"
@@ -30,7 +40,7 @@
   ansible.posix.authorized_key:
     user: "{{ username }}"
     state: present
-    key: "{{ lookup('file', '~/.ssh/keys/{{ ansible_hostname }}.pub')}}"
+    key: "{{ lookup('file', '~/.ssh/keys/{{ inventory_hostname }}.pub')}}"
 
 - name: Enable cron daemon
   service:

roles/system/tasks/initial.yml

@@ -0,0 +1,56 @@
+- name: Determine whether initial setup is needed
+  set_fact:
+    initial_setup: yes
+  when:
+    ansible_user != admin_username
+
+- name: Fallback to su
+  set_fact:
+    ansible_become_method: "su"
+    ansible_become_user: "root"
+    ansible_become_password: "root"
+  when:
+    initial_setup is defined
+
+- setup:
+
+- name: Install opendoas
+  community.general.pacman:
+    name: opendoas
+    state: present
+
+- name: Configure doas
+  template:
+    src: doas.conf.j2
+    dest: /etc/doas.conf
+
+- name: Create priviledged user
+  user:
+    name: "{{ admin_username }}"
+    groups: wheel
+
+- name: Deploy SSH key to admin user
+  ansible.posix.authorized_key:
+    user: "{{ admin_username }}"
+    state: present
+    key: "{{ lookup('file', '~/.ssh/keys/{{ inventory_hostname }}.pub')}}"
+
+- name: Reset variables to before fallback
+  set_fact:
+    ansible_become_method: "{{ escalation_method }}"
+    ansible_user: "{{ admin_username }}"
+    ansible_ssh_password: ""
+  when:
+    initial_setup is defined
+
+- name: Reconnect as new administrator
+  wait_for_connection:
+    timeout: 10
+  when:
+    initial_setup is defined
+
+- name: Delete initial user
+  user:
+    name: "alarm"
+    force: yes
+    state: absent

roles/system/tasks/main.yml

@@ -1,2 +1,3 @@
+- include_tasks: initial.yml
 - include_tasks: essential.yml
 - include_tasks: sshd.yml

roles/system/tasks/sshd.yml

@@ -3,11 +3,27 @@
     dest: /etc/ssh/sshd_config
     regexp: "^#PasswordAuthentication yes"
     line: "PasswordAuthentication no"
-  notify: Restart sshd
+  register: sshd_config
 
 - name: Change SSH port
   lineinfile:
     dest: /etc/ssh/sshd_config
     regexp: "^#Port 22"
     line: "Port {{ sshd_port }}"
-  notify: Restart sshd
+  register: sshd_config
+
+- name: Restart SSHD
+  service:
+    name: sshd
+    state: restarted
+  when: sshd_config.changed
+
+- name: Reset ansible_ssh_port
+  set_fact:
+    ansible_ssh_port: "{{ sshd_port }}"
+  when: sshd_config.changed
+
+- name: Reconnect under new port
+  wait_for_connection:
+    timeout: 10
+  when: sshd_config.changed

roles/system/templates/doas.conf.j2

@@ -0,0 +1 @@
+permit nopass :wheel

run.yml

@@ -2,27 +2,42 @@
 - hosts: sv
   become: yes
 
+  gather_facts: no
+
+  pre_tasks:
+    - import_tasks: tasks/set_host.yml
+    - import_tasks: tasks/ssh_port.yml
+
   roles:
     - role: system
-
+    
-    - role: dotfiles
-      when: enable_dotfiles
-
     - role: filesystems
       when: enable_filesystems
 
     - role: networking/connection
       when: enable_connection
 
+    - role: firewall
+      when: enable_firewall
+
     - role: networking/ddclient
       when: enable_ddclient
 
     - role: networking/nameserver
       when: enable_nameserver
 
+    - role: services/sftp
+      when: enable_sftpr
+
+    - role: services/mail
+      when: enable_mail
+
     - role: networking/ssl
       when: enable_ssl
 
+    - role: services/webserver
+      when: enable_webserver
+
     - role: services/gitea
       when: enable_gitea
 
@@ -35,8 +50,5 @@
     - role: services/website
       when: enable_website
 
-    - role: services/sftp
+    - role: dotfiles
-      when: enable_sftpr
+      when: enable_dotfiles
-
-    - role: services/mail
-      when: enable_mail

tasks/set_host.yml

@@ -0,0 +1,15 @@
+- name: Determine if host is up at static IP
+  local_action: "command ping -c 1 {{ local_ip }}"
+  become: no
+  ignore_errors: true
+  register: up_static
+
+- name: Switch ansible_host to fallback IP
+  set_fact:
+    ansible_host: "{{ fallback_host }}"
+  when: up_static.rc != 0
+
+- name: Switch ansible_host to static IP
+  set_fact:
+    ansible_host: "{{ local_ip }}"
+  when: up_static.rc == 0

tasks/ssh_port.yml

@@ -0,0 +1,42 @@
+- name: Set default user for SSH
+  set_fact:
+    ansible_user: "{{ admin_username }}"
+
+- name: Attempt ssh connection
+  become: no
+  wait_for_connection:
+    timeout: 10
+  ignore_errors: true
+  register: ssh_result_default
+
+- name: Set ssh to fallback port
+  set_fact:
+    ansible_ssh_port: 22
+  when:
+    - ssh_result_default is failed
+
+- name: Attempt ssh connection
+  become: no
+  wait_for_connection:
+    timeout: 10
+  ignore_errors: true
+  register: ssh_result_port
+  when:
+    - ssh_result_default is failed
+
+- name: Set ssh to fallback port and default Arch Linux ARM credentials
+  set_fact:
+    ansible_ssh_port: "22"
+    ansible_user: "alarm"
+    ansible_ssh_password: "alarm"
+  when:
+    - ssh_result_default is failed
+    - ssh_result_port is failed
+
+- name: Attempt ssh connection
+  become: no
+  wait_for_connection:
+    timeout: 10
+  when:
+    - ssh_result_default is failed
+    - ssh_result_port is failed