Add mastodon-nginx role.

roles/mastodon-nginx/tasks/main.yml

@@ -0,0 +1,29 @@
+---
+# This role install nginx, configures it and sets up a Let's Encrypt certificate for the
+# Mastodon instance
+
+- name: Install nginx and letsencrypt
+  apt: name={{ item }} state=latest update_cache=yes
+  with_items:
+     - nginx
+     - letsencrypt
+- name: Stop nginx for now
+  service: name=nginx state=stopped
+- name: Generate Let's Encrypt TLS certificate for Mastodon instance
+  shell: letsencrypt certonly -n --agree-tos --standalone -d {{ mastodon_hostname }}
+- name: Remove default nginx config in sites-enabled
+  file:
+    path: /etc/nginx/sites-enabled/default
+    state: absent
+- name: Copy Mastodon nginx vhost template to sites-available
+  copy:
+    src: mastodon-nginx.conf
+    dest: /etc/nginx/sites-available/{{ mastodon_hostname }}.conf
+    backup: yes
+- name: Enable Mastodon nginx vhost template
+  file:
+    src: /etc/nginx/sites-available/{{ mastodon_hostname }}.conf
+    dest: /etc/nginx/sites-enabled/{{ mastodon_hostname }}.conf
+    state: link
+- name: Start nginx
+  service: name=nginx state=started

roles/mastodon-nginx/templates/mastodon-nginx.conf

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+map $http_upgrade $connection_upgrade {
+  default upgrade;
+  ''      close;
+}
+
+server {
+  listen 80;
+  listen [::]:80;
+  server_name {{ mastodon_hostname }};
+  # Useful for Let's Encrypt
+  location /.well-known/acme-challenge/ { allow all; }
+  location / { return 301 https://$host$request_uri; }
+}
+
+server {
+  listen 443 ssl http2;
+  listen [::]:443 ssl http2;
+  server_name {{ mastodon_hostname }};
+
+  ssl_protocols TLSv1.2;
+  ssl_ciphers HIGH:!MEDIUM:!LOW:!aNULL:!NULL:!SHA;
+  ssl_prefer_server_ciphers on;
+  ssl_session_cache shared:SSL:10m;
+
+  ssl_certificate     /etc/letsencrypt/live/{{ mastodon_hostname }}/fullchain.pem;
+  ssl_certificate_key /etc/letsencrypt/live/{{ mastodon_hostname }}/privkey.pem;
+
+  keepalive_timeout    70;
+  sendfile             on;
+  client_max_body_size 0;
+
+  root /home/mastodon/live/public;
+
+  gzip on;
+  gzip_disable "msie6";
+  gzip_vary on;
+  gzip_proxied any;
+  gzip_comp_level 6;
+  gzip_buffers 16 8k;
+  gzip_http_version 1.1;
+  gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;
+
+  add_header Strict-Transport-Security "max-age=31536000";
+
+  location / {
+    try_files $uri @proxy;
+  }
+
+  location ~ ^/(emoji|packs|system/accounts/avatars|system/media_attachments/files) {
+    add_header Cache-Control "public, max-age=31536000, immutable";
+    try_files $uri @proxy;
+  }
+
+  location /sw.js {
+    add_header Cache-Control "public, max-age=0";
+    try_files $uri @proxy;
+  }
+
+  location @proxy {
+    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 https;
+    proxy_set_header Proxy "";
+    proxy_pass_header Server;
+
+    proxy_pass http://127.0.0.1:3000;
+    proxy_buffering off;
+    proxy_redirect off;
+    proxy_http_version 1.1;
+    proxy_set_header Upgrade $http_upgrade;
+    proxy_set_header Connection $connection_upgrade;
+
+    tcp_nodelay on;
+  }
+
+  location /api/v1/streaming {
+    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 https;
+    proxy_set_header Proxy "";
+
+    proxy_pass http://127.0.0.1:4000;
+    proxy_buffering off;
+    proxy_redirect off;
+    proxy_http_version 1.1;
+    proxy_set_header Upgrade $http_upgrade;
+    proxy_set_header Connection $connection_upgrade;
+
+    tcp_nodelay on;
+  }
+
+  error_page 500 501 502 503 504 /500.html;
+}