MySQL backup strategy

1. Strategy

• Library to back up

iot and analytics library

• Daily backup

Every day 23：00 Back up once

• Hourly temporary backup

Backup temporarily every hour , Delete the backup before one day every morning

2. operation

2.1 Document preparation

• data Prepare under the directory mysql_dump Catalog , For backup
• data/mysql_dump Under the table of contents establish hour_tmp The directory stores daily temporary backup files
• data/mysql_dump Under the table of contents establish mysql_dump.sh Script （ Backup scripts ）

2.2 Backup scripts

#!/bin/bash
##### Defining variables #######
date_now=`date +%Y%m%d%H%M`
dump_dir=$1
mysql_user="root"
mysql_ip="127.0.0.1"
mysql_port=3306
mysql_passwd="[email protected]"


#######  Define the library to be backed up  #################
# The database names to be backed up are one by one 
back_dbs=(
iot
analytics
)

####### Start backup ##########
cd ${dump_dir}
###  Backup each library ##

for back_db in ${back_dbs[@]};
do
  mysqldump -h${mysql_ip} -P${mysql_port} -u${mysql_user} -p${mysql_passwd} -l -F ${back_db} > ./${back_db}.sql
  tar czf ${back_db}-${date_now}.tar.gz ${back_db}.sql --remove-files
done

2.3 Timing task

Strategy ：
1） Daily backup to /data/mysql_dump, Retain 15 God
2） Backup to every hour /data/mysql_dump/hour_tmp, Empty every morning

###########################
# mysql Backup related  #
###########################
# Hourly temporary backup 
30 * * * * /bin/bash /data/mysql_dump/mysql_dump.sh /data/mysql_dump/hour_tmp  > /dev/null 2&>1
# Daily backup 
00 23 * * * /bin/bash /data/mysql_dump/mysql_dump.sh /data/mysql_dump   > /dev/null 2&>1
# Delete files temporarily backed up by hour every day 
10 01 * * * /bin/find /data/mysql_dump/hour_tmp   -name \*.tar.gz -mtime +1| xargs -I {
    } rm -rf {
    }
# Retain 15 Day backup 
05 01 * * * /bin/find /data/mysql_dump -maxdepth 1  -name \*.tar.gz -mtime +15| xargs -I {
    } rm -rf {
    }

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