add notify script

CHANGELOG.md

@@ -1,4 +1,7 @@
 # Changelog
 
+## 0.1.1
+  - Add notify script
+
 ## 0.1.0
   - Initial release

image/env.yml

@@ -10,3 +10,5 @@ KEEPALIVED_UNICAST_PEERS:
 
 KEEPALIVED_VIRTUAL_IPS:
   - 192.168.1.231
+
+KEEPALIVED_NOTIFY: /osixia/keepalived/notify-example.sh

image/service/keepalived/assets/keepalived.conf

@@ -22,4 +22,6 @@ vrrp_instance vip-1 {
     auth_type PASS
     auth_pass {{ keepalived_password }}
   }
+
+  {{ keepalived_notify }}
 }

image/service/keepalived/assets/notify-example.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+
+TYPE=$1
+NAME=$2
+STATE=$3
+
+case $STATE in
+        "MASTER") echo "I'm the MASTER! Whup whup."
+                  exit 0
+                  ;;
+        "BACKUP") "Ok, i'm just a backup, great."
+                  exit 0
+                  ;;
+        "FAULT")  echo "Fault, what ?"
+                  exit 0
+                  ;;
+        *)        echo "Unknown state"
+                  exit 1
+                  ;;
+esac

image/service/keepalived/container-start.sh

@@ -22,6 +22,12 @@ if [ ! -e "$FIRST_START_DONE" ]; then
       sed -i "s|{{ keepalived_priority }}|$KEEPALIVED_PRIORITY|g" /etc/keepalived/keepalived.conf
       sed -i "s|{{ keepalived_password }}|$KEEPALIVED_PASSWORD|g" /etc/keepalived/keepalived.conf
 
+      if [ -n "$KEEPALIVED_NOTIFY" ]; then
+        sed -i "s|{{ keepalived_notify }}|notify $KEEPALIVED_NOTIFY|g" /etc/keepalived/keepalived.conf
+      else
+        sed -i "/{{ keepalived_notify }}/d" /etc/keepalived/keepalived.conf
+      fi
+
       # unicast peers
       KEEPALIVED_UNICAST_PEERS=($KEEPALIVED_UNICAST_PEERS)
       for peer in "${KEEPALIVED_UNICAST_PEERS[@]}"
@@ -53,6 +59,9 @@ if [ ! -e "$FIRST_START_DONE" ]; then
       sed -i "/{{ keepalived_virtual_ips }}/d" /etc/keepalived/keepalived.conf
     fi
 
+    cat /etc/keepalived/keepalived.conf
+    cat /osixia/keepalived/notify-example.sh
+
   fi
 
   touch $FIRST_START_DONE