Rocky Linux8.6 : System Backup and Restore

1.Website data backup

1-1. Backup under /var/www/html

①Creating backup script files

# cd /var/www/system
# vi backup_html.sh
Contents of backup_html.sh

#!/bin/bash

TODAY=`/bin/date +%Y%m%d`
DAY_AGO=`/bin/date --date '10day ago' +%Y%m%d`

HTML_DIR="/var/www/html"

BACKUP_DIR="/var/www/backup/html_bak"
RUN_FLAG="/var/www/backup/html_bak/html_flag"

/bin/mkdir -p ${BACKUP_DIR}
/bin/touch ${RUN_FLAG}

/bin/tar vfcz ${BACKUP_DIR}/html_back_${TODAY}.tar.gz ${HTML_DIR}

/bin/chmod 644 ${BACKUP_DIR}/html_back_${TODAY}.tar.gz

if [ -f ${BACKUP_DIR}/html_back_${DAY_AGO}.tar.gz ];
  then
    /bin/rm -f ${BACKUP_DIR}/html_back_${DAY_AGO}.tar.gz
fi

/bin/rm -f ${RUN_FLAG}

➁authorization

# chmod 700 backup_html.sh

➂Create save directory

# mkdir -p /var/www/backup/html_bak
# chmod 777 /var/www/backup/html_bak

④Periodic execution
Add settings to cron for periodic backups

# crontab -e
0 6 * * */var/www/system/backup_html.sh > /dev/null 2>&1

2. MySQL database backup

①Creating backup script files

# cd /var/www/system
# vi db_my_backup.sh

#!/bin/bash

export LANG=ja_JP.eucJP
export PATH="$PATH":/usr/local/mysql/bin
export MYSQL_HOME=/usr/local/mysql
export MYLIB=${MYSQL_HOME}/lib
export MANPATH="${MANPATH}":${MYSQL_HOME}/man
export LD_LIBRARY_PATH="${LD_LIBRARY_PATH}":"${MYLIB}"

MYUSER="root"
MYPASS="xxxxxxxxxxx" #MySQL connection password

TIME_STRING=`/bin/date '+%Y%m%d'`
DAY_AGO=`/bin/date --date '10day ago' +%Y%m%d`

DB_BAK_DIR="/var/www/backup/db_bak"
RUN_FLAG="${DB_BAK_DIR}/db_my_flag"

MYSQL_BACKUP_FILE=${DB_BAK_DIR}/mysql_backup_"${TIME_STRING}".dump

/bin/mkdir -p ${DB_BAK_DIR}
/bin/touch ${RUN_FLAG}

mysqldump -u${MYUSER} -p${MYPASS} --all-databases > ${MYSQL_BACKUP_FILE}
/bin/gzip ${MYSQL_BACKUP_FILE}

if [ -f ${DB_BAK_DIR}/${MT_DB}"${DAY_AGO}".dump.gz ];
then
/bin/rm -f ${DB_BAK_DIR}/${MT_DB}"${DAY_AGO}".dump.gz
fi

if [ -f ${DB_BAK_DIR}/${XOOPS_DB}"${DAY_AGO}".dump.gz ];
then
/bin/rm -f ${DB_BAK_DIR}/${XOOPS_DB}"${DAY_AGO}".dump.gz
fi

if [ -f ${DB_BAK_DIR}/${GEEKLOG_DB}"${DAY_AGO}".dump.gz ];
then
/bin/rm -f ${DB_BAK_DIR}/${GEEKLOG_DB}"${DAY_AGO}".dump.gz
fi

/bin/rm -f ${RUN_FLAG}

➁authorization

# chmod 700 db_my_backup.sh

➂Create save directory

# mkdir -p /var/www/backup/db_bak
# chmod 777 /var/www/backup/db_bak

④Periodic execution
Add settings to cron for periodic backups

# crontab -e
0 7 * * * /var/www/system/db_my_backup.sh > /dev/null 2>&1

3. Restore backup files under html

① Store HTML backup files in "/ (root)" directory

# cd /var/www/backup/html_bak
# cp html_back_20220610.tar.gz /    ←Specify the backup file with the latest date

➁Expand file

# cd /
# tar zxvf html_back_20220610.tar.gz

4. Restore Mysql Backup Files

①Save DB backup file to any directory
(In the example, the directory is "/var/www/backup/db_bak") Extract data

# cd /var/www/backup/db_bak
# gzip -d mysql_backup_20220610.dump.gz  ←Specify the backup file with the latest date

➁Restore MySQL

# mysql -u root -p < mysql_backup_20220610.dump
Enter password: ←Root password for MySQL
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