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CLOUDSTACK-6989: Add 3 strikes rule for RvR freezing detection

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Sometime in VR ntpd would move time backward to keep sync with NTP server, which
can result in false alarm of keepalived monitering process.

This patch adds 3 strikes for keepalived process dead detection to avoid falsely
shutdown keepalived process due to time adjustment for only once.
This commit is contained in:
Sheng Yang 2014-06-24 16:58:55 -07:00
parent f756d4aa33
commit 75c9a20c77
1 changed files with 15 additions and 0 deletions
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15
systemvm/patches/debian/config/root/redundant_router/check_heartbeat.sh.templ
View File

@ -17,12 +17,27 @@
# under the License.
STRIKE_FILE="[RROUTER_BIN_PATH]/keepalived.strikes"
if [ -e [RROUTER_BIN_PATH]/keepalived.ts2 ]
then
lasttime=$(cat [RROUTER_BIN_PATH]/keepalived.ts2)
thistime=$(cat [RROUTER_BIN_PATH]/keepalived.ts)
diff=$(($thistime - $lasttime))
s=0
if [ $diff -lt 30 ]
then
if [ -e $STRIKE_FILE ]
then
s=`cat $STRIKE_FILE 2>/dev/null`
fi
s=$(($s+1))
echo $s > $STRIKE_FILE
else
rm $STRIKE_FILE
fi
#3 strikes rule
if [ $s -gt 2 ]
then
echo Keepalived process is dead! >> [RROUTER_LOG]
[RROUTER_BIN_PATH]/services.sh stop >> [RROUTER_LOG] 2>&1