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./ha.sh
#!/bin/bash
echo "$(date): init"
#Screen off
vbetool dpms off
#Clean
cd /share/admin &&./stopInfocepo.sh
#If I was the master sleep a little !
ipPublic="$(dig +short myip.opendns.com @resolver1.opendns.com )"
ipMasterOld="$(nslookup infocepo.com |sed -rn 's#^Address: (.*)$#\1#p' )"
[ "${ipPublic}" = "${ipMasterOld}" ] &&sleep 240
#Wait master down (big loop)
while (nc -zw2 infocepo.com 443 >/dev/null 2>&1 ||(sleep 10 ;nc -zw4 infocepo.com 443 >/dev/null 2>&1 ) );do
if [ -z "$(find /root/ha_synced -type f -mmin -60 2>/dev/null )" ] ;then
haUpdate="$(cd /share/admin ;./bisync.sh /share/admin/ /share/admin/ infocepo.com |grep -w ha.sh )"
if [ ! -z "${haUpdate}" ] ;then
(bash -x /root/enable/ha.sh >>/var/log/ha.log 2>&1 )&
exit 1
fi
rsync --numeric-ids --delete --force --modify-window=1 --ignore-errors --block-size=128.00K --inplace --no-whole-file \
-z --compress-level=9 \
-aAXxv \
--backup-dir=rsync-rollback/$(date '+%Y-%m-%d') \
--exclude=rsync-rollback \
--exclude=.rsync_* \
--rsh="ssh -i /root/.ssh/me@infocepo.com.key -p 1901 -oStrictHostKeyChecking=no" \
infocepo.com:/share/ /share/ &&touch /root/ha_synced
fi
sleep 10
done
#Maybe it's me down ! If INTERNET down, reboot
! ping -w2 -c1 wikipedia.org >/dev/null 2>&1 &&systemctl start kexec.target
#Become master
#Register DNS
ipMasterDown="$(nslookup infocepo.com |sed -rn 's#^Address: (.*)$#\1#p' )"
curl 'https://dynamicdns.park-your-domain.com/update?host=@&domain=infocepo.com&password='"$(cat /share/admin/.namecheap-password )"'&ip='"${ipPublic}"
#Random startup time
sleep $((RANDOM%10))
#Restart if another instance
nc -zw2 "${ipPublic}" 443 >/dev/null 2>&1 &&systemctl start kexec.target
#Start
cd /share/admin &&./infocepoStart.sh &
#Wait DNS propagation
sleep $((240-25))
#Monitor
echo "$(date): up"
[ "${ipPublic}" = "${ipMasterDown}" ] &&ipMasterDown=""
while [ "${ipPublic}" = "$(nslookup infocepo.com |sed -rn 's#^Address: (.*)$#\1#p' )" ] \
&&( ! nc -zw2 "${ipMasterDown}" 443 >/dev/null 2>&1 ) \
&&(nc -zw2 "${ipPublic}" 443 >/dev/null 2>&1 ||nc -zw4 "${ipPublic}" 443 >/dev/null 2>&1 ) \
&&(nc -zw2 "${ipMasterDown}" 1901 >/dev/null 2>&1 ||ping -w2 -c1 debian.org >/dev/null 2>&1 ||ping -w2 -c1 wikipedia.org >/dev/null 2>&1 ) ;do
sleep 4
done
echo "$(date): down"
#Stop
cd /share/admin &&./stopInfocepo.sh
#Comment these lines for production
#if ping -w2 -c1 wikipedia.org >/dev/null 2>&1 ;then
# (bash -x /root/enable/ha.sh >>/var/log/ha.log 2>&1 )&
# exit 1
#fi
#Reboot
systemctl start kexec.target