Merge pull request 'Proxy and SSL support' (#7) from development into main

Reviewed-on: http://gitea.tomsitcafe.com:3000/iron/ds-gitea/pulls/7

README.org

@@ -8,11 +8,13 @@ This role installs and configures a [[https://docs.gitea.com/][Gitea]] server.
 
 It uses SQLite as its default database service - with optional PostgreSQL support.
 
-Use the =ds-ufw= role to configure the firewall.
+The role can set up a reverse proxy with SSL using Nginx.
 
-Use the =ds-posgresql= to configure the database.
+- Use the =ds-ufw= role to configure the firewall.
+- Use the =ds-posgresql= role to configure the database.
+- Use the =ds-nginx= role to install the proxy server.
 
-* Role Workflow
+* Role Behavior
 
 1. Download and install the Gitea binary
 2. (Optionally) Set up the PostgreSQL user and database
@@ -20,14 +22,19 @@ Use the =ds-posgresql= to configure the database.
 4. Create the required directory structure
 5. Wait for the secret creation and storage in SOPS - if secrets are not present
 6. Deploy the Gitea configuration
-7. Deploy the Gitea service file
+7. Deploy the Gitea systemd service file
-8. Enable and start the service
+8. (Optionally) Set up the reverse proxy with optional SSL
+9. Enable and start the service
 
 * Defaults
 
 #+begin_src yaml
 gitea_user: git
 gitea_group: git
+gitea_http_port: 3000
+gitea_ssh_port: 22
+gitea_database_server: ''
+gitea_reverse_proxy: ''
 #+end_src
 
 * Requirements
@@ -38,11 +45,12 @@ gitea_group: git
 - sudo
 - ca-certificates
 - (optional) PosgreSQL database
+- (optional) Nginx server
 
 * Variables
 
 | Variable                   | Type    | Comment                                      |
-|-----------------------+--------+----------------------------------------------|
+|----------------------------+---------+----------------------------------------------|
 | gitea_user                 | string  | Gitea user                                   |
 | gitea_group                | string  | Gitea group                                  |
 | gitea_binary_url           | string  | Download URL of Gitea                        |
@@ -58,6 +66,12 @@ gitea_group: git
 | gitea_jwt_secret           | string  | JWT secret                                   |
 | gitea_database_server      | string  | DB server - 'postgresql' or empty for sqlite |
 | gitea_db_password          | string  | PosgreSQL db password (if pgsql is used)     |
+| gitea_reverse_proxy        | string  | Reverse proxy to use or not set for no proxy |
+| gitea_enable_https         | boolean | Configure HTTPS in the proxy                 |
+| gitea_ssl_cert             | string  | SSL certificate                              |
+| gitea_ssl_key              | string  | SSL key                                      |
+| gitea_enable_http_redirect | boolean | Redirect HTTP to HTTPS                       |
+| gitea_self_signed          | boolean | Generate a self-signed cert and key          |
 
 * Handlers
 
@@ -66,7 +80,7 @@ gitea_group: git
 
 * Secrets
 
-Always store the production secrets in SOPS, or in Ansible Vault.
+Always save the production secrets in SOPS, or in Ansible Vault.
 
 Generate the secrets manually when the playbook stops:
 
@@ -97,9 +111,17 @@ Then re-run the playbook to finish the installation.
     gitea_http_port: 3000
     gitea_root_url: http://gitea.tomsitcafe.com:3000
 
-    # Optional
+    # Optional Postgresql database backend
     gitea_database_server: postgresql
 
+    # Optional Nginx reverse proxy configuration
+    gitea_reverse_proxy: nginx
+    gitea_enable_https: true
+    gitea_self_signed: true
+    gitea_ssl_cert: /var/lib/gitea/certs/cert.pem
+    gitea_ssl_key: /var/lib/gitea/certs/key.pem
+    gitea_enable_http_redirect: true
+
     # In prod put these secrets in SOPS:
     gitea_lfs_jwt_secret: G9bZrRHMhRQ8w4R0KkH2VLnx2rzq81ROQ951IQjlMs4 
     gitea_internal_token: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJuYmYiOjE3NzA2Mzk1Njh9.ybbaeNLFiLbyvxfj4vkqhXSAXKRGpwvP8jIm9YLPgXw

defaults/main.yml

@@ -1,3 +1,5 @@
 ---
 gitea_user: git
 gitea_group: git
+gitea_http_port: 3000
+gitea_ssh_port: 22

tasks/main.yml

@@ -44,6 +44,28 @@
         - Reload_postgresql
   when: gitea_database_server | default('') == "postgresql"
 
+- name: Set up the reverse proxy
+  block:
+    - name: Deploy the site configuration
+      ansible.builtin.template:
+        src: gitea.j2
+        dest: /etc/nginx/sites-available/gitea
+        owner: root
+        group: root
+        mode: '0644'
+      notify: Reload_nginx
+
+    - name: Enable the gitea site
+      ansible.builtin.file:
+        src: /etc/nginx/sites-available/gitea
+        dest: /etc/nginx/sites-enabled/gitea
+        state: link
+        owner: root
+        group: root
+        force: true
+      notify: Reload_nginx
+  when: gitea_reverse_proxy | default('') == "nginx"
+
 - name: Create the gitea group
   ansible.builtin.group:
     name: "{{ gitea_group }}"
@@ -54,7 +76,8 @@
     name: "{{ gitea_user }}"
     group: "{{ gitea_group }}"
     home: /home/{{ gitea_user }}
-    shell: /usr/sbin/nologin
+    shell: /bin/bash
+    password: '*'
     system: true
     create_home: true
     
@@ -71,6 +94,11 @@
     group: "{{ gitea_group }}"
     mode: '0750'
 
+- name: Generate self-signed certificates
+  ansible.builtin.include_tasks:
+    file: self-signed-cert.yml
+  when: gitea_self_signed | default(false)
+
 - name: Pause to generate and save the secrets in SOPS
   ansible.builtin.pause:
     prompt: |

tasks/self-signed-cert.yml

@@ -0,0 +1,18 @@
+---
+- name: Create the certs directory
+  ansible.builtin.file:
+    path: /var/lib/gitea/certs
+    owner: "{{ gitea_user }}"
+    group: "{{ gitea_group }}"
+    mode: '0750'
+    state: directory
+
+- name: Generate the self-signed certs for Gitea
+  ansible.builtin.command: >
+    gitea cert
+    --host {{ gitea_domain }},{{ gitea_ssh_domain }}
+    --out /var/lib/gitea/certs/cert.pem
+    --keyout /var/lib/gitea/certs/key.pem
+  become_user: "{{ gitea_user }}"
+  args:
+    creates: /var/lib/gitea/certs/cert.pem

templates/gitea.j2

@@ -0,0 +1,55 @@
+# {{ ansible_managed }}
+
+{% if gitea_enable_https | default(false) %}
+server {
+    listen 443 ssl http2;
+    server_name {{ gitea_domain }};
+
+    ssl_certificate     {{ gitea_ssl_cert }};
+    ssl_certificate_key {{ gitea_ssl_key }};
+
+    ssl_protocols       TLSv1.2 TLSv1.3;
+    ssl_ciphers         HIGH:!aNULL:!MD5;
+
+    client_max_body_size 50M;
+
+    location / {
+        client_max_body_size 512M;
+        proxy_pass http://localhost:{{ gitea_http_port }};
+        proxy_set_header Connection $http_connection;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }
+}
+
+{% if gitea_enable_http_redirect | default(true) %}
+server {
+    listen 80;
+    server_name {{ gitea_domain }};
+    return 301 https://$host$request_uri;
+}
+{% endif %}
+
+{% else %}
+# HTTP-only configuration
+server {
+    listen 80;
+    server_name {{ gitea_domain }};
+
+    client_max_body_size 50M;
+
+    location / {
+        client_max_body_size 512M;
+        proxy_pass http://localhost:{{ gitea_http_port }};
+        proxy_set_header Connection $http_connection;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }
+}
+{% endif %}

templates/gitea.service.j2

@@ -3,6 +3,10 @@
 [Unit]
 Description=Gitea (Git with a cup of tea)
 After=network.target
+{% if gitea_database_server | default('') == "postgresql" %}
+Wants=postgresql.service
+After=postgresql.service
+{% endif %}
 
 [Service]
 RestartSec=2s