mysql backup sh script and remove old

1#!/bin/bash
2 
3################################################################
4##
5##   MySQL Database Backup Script 
6##   Written By: Rahul Kumar
7##   URL: https://tecadmin.net/bash-script-mysql-database-backup/
8##   Last Update: Jan 05, 2019
9##
10################################################################
11 
12export PATH=/bin:/usr/bin:/usr/local/bin
13TODAY=`date +"%d%b%Y"`
14 
15################################################################
16################## Update below values  ########################
17 
18DB_BACKUP_PATH='/backup/dbbackup'
19MYSQL_HOST='localhost'
20MYSQL_PORT='3306'
21MYSQL_USER='root'
22MYSQL_PASSWORD='mysecret'
23DATABASE_NAME='mydb'
24BACKUP_RETAIN_DAYS=30   ## Number of days to keep local backup copy
25 
26#################################################################
27 
28mkdir -p ${DB_BACKUP_PATH}/${TODAY}
29echo "Backup started for database - ${DATABASE_NAME}"
30 
31 
32mysqldump -h ${MYSQL_HOST} \
33   -P ${MYSQL_PORT} \
34   -u ${MYSQL_USER} \
35   -p${MYSQL_PASSWORD} \
36   ${DATABASE_NAME} | gzip > ${DB_BACKUP_PATH}/${TODAY}/${DATABASE_NAME}-${TODAY}.sql.gz
37 
38if [ $? -eq 0 ]; then
39  echo "Database backup successfully completed"
40else
41  echo "Error found during backup"
42  exit 1
43fi
44 
45 
46##### Remove backups older than {BACKUP_RETAIN_DAYS} days  #####
47 
48DBDELDATE=`date +"%d%b%Y" --date="${BACKUP_RETAIN_DAYS} days ago"`
49 
50if [ ! -z ${DB_BACKUP_PATH} ]; then
51      cd ${DB_BACKUP_PATH}
52      if [ ! -z ${DBDELDATE} ] && [ -d ${DBDELDATE} ]; then
53            rm -rf ${DBDELDATE}
54      fi
55fi
56 
57### End of script ####
58