Added all files

examples/010_templates/playbook/hostname.yml

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+---
+  - hosts: all
+    tasks:
+      - name: get server hostname
+        command: hostname

examples/010_templates/playbook/loadbalancer-default-nginx.yml

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+---
+- hosts: loadbalancer
+  become: true
+  tasks:
+    - name: ensure nginx started
+      service: name=nginx state=started enabled=yes
+
+    - name: de-activate demo nginx site
+      file: path=/etc/nginx/sites-enabled/demo state=absent
+      notify: restart nginx
+
+    - name: activate default nginx site
+      file: src=/etc/nginx/sites-available/default dest=/etc/nginx/sites-enabled/default state=link
+      notify: restart nginx
+
+  handlers:
+    - name: restart nginx
+      service: name=nginx state=restarted

examples/010_templates/playbook/nginx-default.conf

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+
+#user  nobody;
+#Defines which Linux system user will own and run the Nginx server
+
+worker_processes  1;
+#Referes to single threaded process. Generally set to be equal to the number of CPUs or cores.
+
+#error_log  logs/error.log; #error_log  logs/error.log  notice;
+#Specifies the file where server logs. 
+
+#pid        logs/nginx.pid;
+#nginx will write its master process ID(PID).
+
+events {
+    worker_connections  1024;
+    # worker_processes and worker_connections allows you to calculate maxclients value: 
+    # max_clients = worker_processes * worker_connections
+}
+
+
+http {
+    include       mime.types;
+    # anything written in /opt/nginx/conf/mime.types is interpreted as if written inside the http { } block
+
+    default_type  application/octet-stream;
+    #
+
+    #log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
+    #                  '$status $body_bytes_sent "$http_referer" '
+    #                  '"$http_user_agent" "$http_x_forwarded_for"';
+
+    #access_log  logs/access.log  main;
+
+    sendfile        on;
+    # If serving locally stored static files, sendfile is essential to speed up the server,
+    # But if using as reverse proxy one can deactivate it
+    
+    #tcp_nopush     on;
+    # works opposite to tcp_nodelay. Instead of optimizing delays, it optimizes the amount of data sent at once.
+
+    #keepalive_timeout  0;
+    keepalive_timeout  65;
+    # timeout during which a keep-alive client connection will stay open.
+
+    #gzip  on;
+    # tells the server to use on-the-fly gzip compression.
+
+    server {
+        # You would want to make a separate file with its own server block for each virtual domain
+        # on your server and then include them.
+        listen       80;
+        #tells Nginx the hostname and the TCP port where it should listen for HTTP connections.
+        # listen 80; is equivalent to listen *:80;
+        
+        server_name  localhost;
+        # lets you doname-based virtual hosting
+
+        #charset koi8-r;
+
+        #access_log  logs/host.access.log  main;
+
+        location / {
+            #The location setting lets you configure how nginx responds to requests for resources within the server.
+            root   html;
+            index  index.html index.htm;
+        }
+
+        #error_page  404              /404.html;
+
+        # redirect server error pages to the static page /50x.html
+        #
+        error_page   500 502 503 504  /50x.html;
+        location = /50x.html {
+            root   html;
+        }
+
+        # proxy the PHP scripts to Apache listening on 127.0.0.1:80
+        #
+        #location ~ \.php$ {
+        #    proxy_pass   http://127.0.0.1;
+        #}
+
+        # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
+        #
+        #location ~ \.php$ {
+        #    root           html;
+        #    fastcgi_pass   127.0.0.1:9000;
+        #    fastcgi_index  index.php;
+        #    fastcgi_param  SCRIPT_FILENAME  /scripts$fastcgi_script_name;
+        #    include        fastcgi_params;
+        #}
+
+        # deny access to .htaccess files, if Apache's document root
+        # concurs with nginx's one
+        #
+        #location ~ /\.ht {
+        #    deny  all;
+        #}
+    }
+
+
+    # another virtual host using mix of IP-, name-, and port-based configuration
+    #
+    #server {
+    #    listen       8000;
+    #    listen       somename:8080;
+    #    server_name  somename  alias  another.alias;
+
+    #    location / {
+    #        root   html;
+    #        index  index.html index.htm;
+    #    }
+    #}
+
+
+    # HTTPS server
+    #
+    #server {
+    #    listen       443 ssl;
+    #    server_name  localhost;
+
+    #    ssl_certificate      cert.pem;
+    #    ssl_certificate_key  cert.key;
+
+    #    ssl_session_cache    shared:SSL:1m;
+    #    ssl_session_timeout  5m;
+
+    #    ssl_ciphers  HIGH:!aNULL:!MD5;
+    #    ssl_prefer_server_ciphers  on;
+
+    #    location / {
+    #        root   html;
+    #        index  index.html index.htm;
+    #    }
+    #}
+
+}

examples/010_templates/playbook/nginx-default.html

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+<!DOCTYPE html>
+<html>
+<head>
+<title>Welcome to nginx on Debian!</title>
+<style>
+    body {
+        width: 35em;
+        margin: 0 auto;
+        font-family: Tahoma, Verdana, Arial, sans-serif;
+    }
+</style>
+</head>
+<body>
+<h1>Welcome to nginx on Debian!</h1>
+<p>If you see this page, the nginx web server is successfully installed and
+working on Debian. Further configuration is required.</p>
+
+<p>For online documentation and support please refer to
+<a href="http://nginx.org/">nginx.org</a></p>
+
+<p>
+      Please use the <tt>reportbug</tt> tool to report bugs in the
+      nginx package with Debian. However, check <a
+      href="http://bugs.debian.org/cgi-bin/pkgreport.cgi?ordering=normal;archive=0;src=nginx;repeatmerged=0">existing
+      bug reports</a> before reporting a new bug.
+</p>
+
+<p><em>Thank you for using debian and nginx.</em></p>
+
+<h2><a href="SCRIPT/BackupPi_2">BackupPi_2</a></h2>
+<h2><a href="SCRIPT/monitor/index.php?serial_id=0000000000000000">monitor</a></h2>
+<h2><a href="SCRIPT/say/say.php">say</a></h2>
+<h2><a href="SCRIPT/sdt/dt.php">Set DateTime</a></h2>
+    
+</body>
+</html>

examples/010_templates/playbook/stack_restart.yml

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+---
+# Bring stack down
+- hosts: loadbalancer
+  become: true
+  tasks:
+    - service: name=nginx state=stopped
+
+- hosts: webserver
+  become: true
+  tasks:
+    - service: name=apache2 state=stopped
+
+# Restart mysql
+- hosts: database
+  become: true
+  tasks:
+    - service: name=mysql state=restarted
+
+# Bring stack up
+- hosts: webserver
+  become: true
+  tasks:
+    - service: name=apache2 state=started
+
+- hosts: loadbalancer
+  become: true
+  tasks:
+    - service: name=nginx state=started