ipfailover - user check script overrides default

When the user supplies a check script, that check script replaces the
default check script.

bug bz1410721
https://bugzilla.redhat.com/show_bug.cgi?id=1410721

Signed-off-by: Phil Cameron <[email protected]>

Author: pecameron

images/ipfailover/keepalived/lib/config-generators.sh

@@ -44,6 +44,8 @@ function generate_global_config() {
 
 #
 #  Generate VRRP checker script configuration section.
+#    When port is 0 always pass
+#    When check script is provided use it instead of default test
 #
 #  Example:
 #      generate_script_config
@@ -61,8 +63,9 @@ function generate_script_config() {
   else
     if [[ -n "${HA_CHECK_SCRIPT}" ]]; then
       echo "   script \"${HA_CHECK_SCRIPT}\""
+    else
+      echo "   script \"</dev/tcp/${serviceip}/${port}\""
     fi
-    echo "   script \"</dev/tcp/${serviceip}/${port}\""
   fi
 
   echo "   interval ${CHECK_INTERVAL_SECS}"
@@ -165,8 +168,6 @@ function generate_vip_section() {
 
 #
 #  Generate vrrpd instance configuration section.
-#    This generates the vrrp_sync_group and vrrp_instance
-#    There is one VIP per vrrp_sync_group
 #
 #  Examples:
 #      generate_vrrpd_instance_config arp 1 "10.1.2.3" enp0s8 "252" "master"