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

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#!/bin/bash
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# for ANY state transition.
# "notify" script is called AFTER the
# notify_* script(s) and is executed
# with 3 arguments provided by keepalived
# (ie don't include parameters in the notify line).
# arguments
# $1 = "GROUP"|"INSTANCE"
# $2 = name of group or instance
# $3 = target state of transition
# ("MASTER"|"BACKUP"|"FAULT")
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TYPE=$1
NAME=$2
STATE=$3
case $STATE in
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"MASTER") echo "I'm the MASTER! Whup whup." > /proc/1/fd/1
exit 0
;;
"BACKUP") echo "Ok, i'm just a backup, great." > /proc/1/fd/1
exit 0
;;
"FAULT") echo "Fault, what ?" > /proc/1/fd/1
exit 0
;;
*) echo "Unknown state" > /proc/1/fd/1
exit 1
;;
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esac