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--- linux_wiki:load_balancing_haproxy_and_keepalived [2018/04/09 00:19]
billdozor [HA-Proxy]
+++ linux_wiki:load_balancing_haproxy_and_keepalived [2019/05/25 23:50] (current)
@@ Line 173: / Line 173: @@
 OPTIONS="-f /etc/haproxy/config.d/http.cfg"</code>
     * Multiple config files example:<code bash>OPTIONS="-f /etc/haproxy/config.d/http.cfg -f /etc/haproxy/config.d/otherfrontend.cfg"</code>
+==== Additional Config Examples ====
+**Session Persistence**
+  * Cookies: Application layer persistence (app needs to support cookies)<code bash>    #-- Balancing --#
+    balance  leastconn
+    # Use Cookie for Session Persistence
+    cookie SERVERID insert indirect nocache
+    # fullconn: does nothing since we are not using minconn (just makes the dashboard less confusing)
+    fullconn 1000
+    server  web01 10.1.2.50:80 check cookie web01 maxconn 500
+    server  web02 10.1.2.51:80 check cookie web02 maxconn 500</code>
+  * Source IP: Affinity based on source IP hash (app doesn't need to know about it)<code bash>    #-- Balancing --#
+    balance  source
+    # fullconn: does nothing since we are not using minconn (just makes the dashboard less confusing)
+    fullconn 1000
+    server  web01 10.1.2.50:80 check maxconn 500
+    server  web02 10.1.2.51:80 check maxconn 500</code>
 ----