hatan4ik · January 24, 2019 20:34 · Oct 12, 2012 · Jul 22, 2011 · Jul 22, 2011
diff --git a/keepalived.conf b/keepalived.conf
@@ -36,7 +36,7 @@ virtual_server 10.0.2.16 53 {
 
 }
 
-# Check for TCP (might work)
+# Check for TCP
 virtual_server 10.0.2.16 53 {
   delay_loop 6
   lb_algo wlc

diff --git a/keepalived.conf b/keepalived.conf
@@ -12,6 +12,7 @@ vrrp_instance dns_test {
         }
 }
 
+# Check for UDP
 virtual_server 10.0.2.16 53 {
   delay_loop 6
   lb_algo wlc
@@ -34,3 +35,26 @@ virtual_server 10.0.2.16 53 {
   }
 
 }
+
+# Check for TCP (might work)
+virtual_server 10.0.2.16 53 {
+  delay_loop 6
+  lb_algo wlc
+  protocol TCP
+
+  real_server 10.0.2.20 53 {
+    weight 100
+    TCP_CHECK {
+      connect_timeout 6
+    }
+  }
+
+  real_server 10.0.2.21 53 {
+    weight 100
+    TCP_CHECK {
+      connect_timeout 6
+    }
+  }
+
+}
+
diff --git a/dnscheck b/dnscheck
@@ -0,0 +1,18 @@
+#!/bin/bash 
+#$Id: keepalivepin,v 1.2 2006/02/27 07:30:41 hmy Exp hmy $
+#use dig check the powerdns's status.
+#in the dns database,have a IN TXT RR keepalivepin.vmmatrix.net,content is "AaBbCcDdEeFf"
+# Source: http://puppet-manifest-share.googlecode.com/svn/trunk/vmx-puppet/modules/lvs/files/keepalived.dns-pin
+#
+RR=keepalivepin.vmmatrix.net
+[ $# -le 1 ]&&{ echo "usage: ${0} -h <ip>"; exit 126;}
+while getopts "h:" OPT;do
+        case $OPT in 
+                h)host=$OPTARG;;
+                *)echo "usage: $0 -h <ip>"&&exit 1;;
+        esac
+done
+
+
+dig @${host} txt ${RR}|grep "\<AaBbCcDdEeFf\>" >/dev/null
+exit $?
diff --git a/keepalived.conf b/keepalived.conf
@@ -0,0 +1,36 @@
+vrrp_instance dns_test {
+        interface eth0
+        state MASTER
+        virtual_router_id 51
+        priority 100
+        authentication {
+                auth_type PASS
+                auth_pass p4ssw0rd
+        }
+        virtual_ipaddress {
+                10.0.2.16/24 dev eth0
+        }
+}
+
+virtual_server 10.0.2.16 53 {
+  delay_loop 6
+  lb_algo wlc
+  protocol UDP
+
+  real_server 10.0.2.20 53 {
+    weight 100
+    MISC_CHECK {
+      connect_timeout 6
+      misc_path "/etc/keepalived/dnscheck -h 10.0.2.20"
+    }
+  }
+
+  real_server 10.0.2.21 53 {
+    weight 100
+    MISC_CHECK {
+      connect_timeout 6
+      misc_path "/etc/keepalived/dnscheck -h 10.0.2.21"
+    }
+  }
+
+}