第十四章 监控系统-zabbix数据库备份

一、概述

备份Zabbix数据库可以防止数据库因意外损坏而导致所有的配置数据丢失，备份的目的是灾难恢复。这里选择对单表备份，而非全部备份。排除以下的表（原因是这几个表的数据为监控的历史展示数据，非配置类数据):

history* trends* Acknowledges Alerts Auditlog Events service_alarms

二、编写备份脚本

[root@prd-apm001 ~]$ vim /usr/sbin/zabbix_mysqldump.sh 

#!/bin/bash
#author: itnihao
#mail: itnihao#qq.com
#license: apache 2.0
#from :https://github.com/zabbix-book/zabbix-mysql-backup
#usage: chmod 700 ${PATH}/zabbix_mysqldump.sh
#crontab: 0 3 * * * ${PATH}/zabbix_mysqldump.sh mysqldump

red='\e[0;31m' # 红色  
RED='\e[1;31m' 
green='\e[0;32m' # 绿色  
GREEN='\e[1;32m' 
blue='\e[0;34m' # 蓝色  
BLUE='\e[1;34m' 
purple='\e[0;35m' # 紫色  
PURPLE='\e[1;35m' 
NC='\e[0m' # 没有颜色  

source /etc/bashrc
source /etc/profile

MySQL_USER=zabbix
MySQL_PASSWORD=zabbix
MySQL_HOST=localhost
MySQL_PORT=3306
MySQL_DUMP_PATH=/mysql_backup
MYSQL_BIN_PATH=/usr/bin/mysql
MYSQL_DUMP_BIN_PATH=/usr/bin/mysqldump
MySQL_DATABASE_NAME=zabbix
DATE=$(date '+%Y-%m-%d')

MySQLDUMP () {
    [ -d ${MySQL_DUMP_PATH} ] || mkdir ${MySQL_DUMP_PATH}
    cd ${MySQL_DUMP_PATH}
    [ -d logs    ] || mkdir logs
    [ -d ${DATE} ] || mkdir ${DATE}
    cd ${DATE}
    
    TABLE_NAME_ALL=$(${MYSQL_BIN_PATH} -u${MySQL_USER} -p${MySQL_PASSWORD}  -h${MySQL_HOST} ${MySQL_DATABASE_NAME} -e \
    "show tables"|egrep -v "(Tables_in_zabbix|history*|trends*|acknowledges|alerts|auditlog|events|service_alarms)")
    for TABLE_NAME in ${TABLE_NAME_ALL}
    do
        ${MYSQL_DUMP_BIN_PATH} --opt -u${MySQL_USER} -p${MySQL_PASSWORD} -P${MySQL_PORT} -h${MySQL_HOST} \
        ${MySQL_DATABASE_NAME} ${TABLE_NAME} >${TABLE_NAME}.sql
        sleep 0.01
    done

    [ "$?" == 0 ] && echo "${DATE}: Backup zabbix succeed"     >> ${MySQL_DUMP_PATH}/logs/ZabbixMysqlDump.log
    [ "$?" != 0 ] && echo "${DATE}: Backup zabbix not succeed" >> ${MySQL_DUMP_PATH}/logs/ZabbixMysqlDump.log
    
    cd ${MySQL_DUMP_PATH}/
    [ "$?" == 0 ] && rm -rf $(date +%Y-%m-%d --date='5 days ago')
    exit 0
}

MySQLImport () {
    cd ${MySQL_DUMP_PATH}
    DATE=$(ls  ${MySQL_DUMP_PATH} |egrep "\b^[0-9]+-[0-9]+-[0-9]+$\b")
    echo -e "${green}${DATE}"
    echo -e "${blue}what DATE do you want to import,please input date:${NC}"
    read SELECT_DATE
    if [ -d "${SELECT_DATE}" ];then
        echo -e "you select is ${green}${SELECT_DATE}${NC}, do you want to contine,if,input ${red}(yes|y|Y)${NC},\
        else then exit"
        read Input
        [[ 'yes|y|Y' =~ "${Input}" ]]
        status="$?"
        if [ "${status}" == "0"  ];then
            echo "now import SQL....... Please wait......."
        else
            exit 1
        fi
        cd ${SELECT_DATE}
        for PER_TABEL_SQL in $(ls *.sql)
        do
           ${MYSQL_BIN_PATH} -u${MySQL_USER} -p${MySQL_PASSWORD}  -h${MySQL_HOST} ${MySQL_DATABASE_NAME} < ${PER_TABEL_SQL}
           echo -e "import ${PER_TABEL_SQL} ${PURPLE}........................${NC}"
        done 
        echo "Finish import SQL,Please check Zabbix database"
    else 
        echo "Don't exist ${SELECT_DATE} DIR" 
    fi
}

case "$1" in
MySQLDUMP|mysqldump)
    MySQLDUMP
    ;;
MySQLImport|mysqlimport)
    MySQLImport
    ;;
*)
    echo "Usage: $0 {(MySQLDUMP|mysqldump) (MySQLImport|mysqlimport)}"
    ;;
esac

三、备份数据

[root@prd-apm001 ~]$ sh /usr/sbin/zabbix_mysqldump.sh mysqldump    #备份数据 

四、恢复数据

[root@prd-apm001 ~]$ sh /usr/sbin/zabbix_mysqldump.sh mysqlimport  #恢复数据