Add cluster config for apache and nginx

apache/cluster.conf

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+#Use this example to proxy HTTPS traffic to a document server cluster, where the node addresses are “backendserver-address1, backendserver-address2, ...”.
+# Replace {{SSL_CERTIFICATE_PATH}} with the path to the ssl certificate file
+# Replace {{SSL_KEY_PATH}} with the path to the ssl private key file
+
+Listen 80
+Listen 443
+LoadModule mpm_event_module modules/mod_mpm_event.so
+LoadModule authn_core_module modules/mod_authn_core.so
+LoadModule authz_core_module modules/mod_authz_core.so
+LoadModule unixd_module modules/mod_unixd.so
+LoadModule proxy_module modules/mod_proxy.so
+LoadModule proxy_balancer_module modules/mod_proxy_balancer.so
+LoadModule proxy_http_module modules/mod_proxy_http.so
+LoadModule proxy_wstunnel_module modules/mod_proxy_wstunnel.so
+LoadModule lbmethod_byrequests_module modules/mod_lbmethod_byrequests.so
+LoadModule rewrite_module modules/mod_rewrite.so
+LoadModule headers_module modules/mod_headers.so
+LoadModule slotmem_shm_module modules/mod_slotmem_shm.so
+LoadModule setenvif_module modules/mod_setenvif.so
+LoadModule ssl_module modules/mod_ssl.so
+LoadModule socache_shmcb_module modules/mod_socache_shmcb.so
+LoadModule log_config_module modules/mod_log_config.so
+#Include conf/extra/httpd-ssl.conf
+
+Header add Set-Cookie "SERVERID=sticky.%{BALANCER_WORKER_ROUTE}e; path=/" env=BALANCER_ROUTE_CHANGED
+
+<Proxy "balancer://nodes_polling">
+    BalancerMember "http://backendserver-address1" route=addr01
+    BalancerMember "http://backendserver-address2" route=addr02
+    ProxySet stickysession=SERVERID
+</Proxy>
+
+<Proxy "balancer://nodes_ws">
+    BalancerMember "ws://backendserver-address1" route=addr01
+    BalancerMember "ws://backendserver-address2" route=addr02
+    ProxySet stickysession=SERVERID
+</Proxy>
+
+<IfModule unixd_module>
+  User daemon
+  Group daemon
+</IfModule>
+
+
+SSLPassPhraseDialog  builtin
+SSLSessionCache        "shmcb:/usr/local/apache2/logs/ssl_scache(512000)"
+SSLSessionCacheTimeout  300
+
+<VirtualHost *:443>
+ServerName localhost
+SSLEngine on
+SSLCertificateFile "{{SSL_CERTIFICATE_PATH}}"
+SSLCertificateKeyFile "{{SSL_KEY_PATH}}"
+SSLCipherSuite EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:ECDHE-RSA-AES128-SHA:DHE-RSA-AES128-GCM-SHA256:AES256+EDH:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES128-SHA256:DHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA:ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:AES256-GCM-SHA384:AES128-GCM-SHA256:AES256-SHA256:AES128-SHA256:AES256-SHA:AES128-SHA:DES-CBC3-SHA:HIGH:!aNULL:!eNULL:!EXPORT:!DES:!MD5:!PSK:!RC4
+SSLProtocol All -SSLv2 -SSLv3
+SSLCompression off
+SSLHonorCipherOrder on
+
+SetEnvIf Host "^(.*)$" THE_HOST=$1
+RequestHeader setifempty X-Forwarded-Proto https
+RequestHeader setifempty X-Forwarded-Host %{THE_HOST}e
+ProxyAddHeaders Off
+
+RewriteEngine on
+
+RewriteCond %{HTTP:Upgrade} =websocket [NC]
+RewriteRule /(.*) balancer://nodes_ws/$1 [P,L]
+RewriteCond %{HTTP:Upgrade} !=websocket [NC]
+RewriteRule /(.*) balancer://nodes_polling/$1 [P,L]
+</VirtualHost>
+
+<VirtualHost *:80>
+    ServerName site.com
+    RewriteEngine On
+    RewriteCond %{HTTPS} off
+    RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L]
+</VirtualHost>
+

nginx/cluster.yml

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+#Use this example for proxy traffic to the document server running at 'backendserver-address'.
+
+upstream docservice {
+  hash $remote_addr consistent;
+  server backendserver-address-1;
+  server backendserver-address-2;
+}
+
+map $http_host $this_host {
+    "" $host;
+    default $http_host;
+}
+
+map $http_x_forwarded_proto $the_scheme {
+     default $http_x_forwarded_proto;
+     "" $scheme;
+}
+
+map $http_x_forwarded_host $the_host {
+    default $http_x_forwarded_host;
+    "" $this_host;
+}
+
+map $http_upgrade $proxy_connection {
+  default upgrade;
+  "" close;
+}
+
+proxy_set_header Upgrade $http_upgrade;
+proxy_set_header Connection $proxy_connection;
+proxy_set_header X-Forwarded-Host $the_host;
+proxy_set_header X-Forwarded-Proto $the_scheme;
+proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+
+
+server {
+  listen 0.0.0.0:80;
+  listen [::]:80 default_server;
+  server_tokens off;
+
+  location / {
+    proxy_pass http://docservice;
+    proxy_http_version 1.1;
+  }
+}