Force redis sync rdb snapshot, backup, tar gzip pack and rotate older then 5 days

redis.backup.sh

#!/bin/bash
# 25 0 * * * /root/redis.backup.sh

PRIVATE_IPV4=`cat /etc/network/interfaces | grep -A 2 'iface eth1' | head -n +2 | tail -n 1 | awk '{print $2}'`

# 1. Dump RDB
(printf "select 2\r\nsave\r\n" | nc ${PRIVATE_IPV4} 6379) || exit 1

# 2. Copy dump
SRCPATH="/var/lib/redis/6379"
SRCFILE="dump.rdb"
DESTPATH="/var/lib/backup/redis"
DESTFILE=`date '+%Y-%m-%d-%H%M%S'`-redis-topx.rdb.tar.gz
DEST="${DESTPATH}/${DESTFILE}"
cd ${SRCPATH} && tar cfz ${DEST} ${SRCFILE}

# 3. Manage soft link
SOFT="${DESTPATH}/redis-topx.rdb.tar.gz"
ln -Tfs ${DEST} ${SOFT}

# 4. Rotate old
find ${DESTPATH}/*-redis-topx.rdb.tar.gz -mtime +5 -exec rm {} \; > /dev/null 2>&1