redis-manager/prepare_reboot_redis.sh

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#!/bin/bash
# Paramètres pouvant être modifiés :
# MANAGERS : Liste des managers redis.
# MANAGER_PORT : Port du manager.
# DURATION : Temps approximatif du reboot.
#
# Ensuite dans le script il y a un sleep 30 et un count qui va jusquà 10, à modifier si on a besoin de plus de temps pour que le cluster soit modifié.
# Les logs (sur RHEL6 et RHEL7) sont envoyés dans /var/log/cron si le lancement de ce script est ajouté en crontab.
############
MANAGERS="10.166.119.48 10.166.119.47"
MANAGER_PORT=45000
############
DURATION=300
WAIT=1
SERVER_IP=$(ip route get 10 | head -n 1 | awk '{print $NF}')
echo "Preparing redis for reboot."
for MANAGER in ${MANAGERS}; do
OUTPUT_ROLE=$(timeout 1 curl -s ${MANAGER}:${MANAGER_PORT}/manager_status 2>&1)
echo ${OUTPUT_ROLE} | grep -q 'active'
if [ $? == 0 ]; then
ACTIVE_MANAGER=${MANAGER}
break
else
continue
fi
done
if [ -z ${ACTIVE_MANAGER} ]; then
echo "No active manager found."
echo "Managers tried : ${MANAGERS}"
exit 2
else
echo "Active manager is : ${ACTIVE_MANAGER}"
fi
COUNT=0
while [ $WAIT == 1 ]; do
echo "Asking ${MANAGER}..."
OUTPUT=$(timeout 1 curl -s ${MANAGER}:${MANAGER_PORT}/prepare_for_reboot/${SERVER_IP}\&duration=${DURATION} 2>&1)
echo "$OUTPUT" | grep -q 'DONE'
if [ $? == 0 ]; then
WAIT=0
else
COUNT=$(($COUNT+1))
echo $COUNT
sleep 30
fi
if [ $COUNT == 10 ]; then
echo "Error, manager taking too long to modify the cluster"
exit 2
fi
done
echo "Ready for reboot"