mysql_xtrabackup.sh

#!/bin/bash
### Use innobackupex Backup Mysql Database For Everyday

# 必须设置 

# 

Backup_dir='/home/mysql_bak'        

Mysql_sock='/var/lib/mysql/mysql.sock'

User='root'

Password=''

# 按 , 号分割,可写多个
Database=''


########################################################################################
function chk_mysql_runing(){
local ps_chk=$(ps -ef |grep -v grep |grep -c mysql)
local netstat_chk=$(netstat -lntp |grep -c mysqld)
if [[ "${ps_chk}" != '0' ]] && [[ "${netstat_chk}" != '0' ]];then
    # mysql runing
    return 0
else
    # mysql not runing
    return 1
fi
}
########################################################################################
function chk_user_pass_sock(){
local mysql_cmd=$(which mysql)


if [[ "${Database}" != '' ]] ;then
    local chk_d=1 # 设置变量为1
else
    local chk_d=0 # 没有设置为0
fi
if [[ "${User}" != '' ]] ;then
    local chk_u=2
else
    local chk_u=0
fi
if [[ "${Password}" != '' ]] ;then
    local chk_p=4
else
    local chk_p=0
fi

local last_chk=$(( chk_d + chk_u + chk_p ))

if [[ ${last_chk} -eq 0 ]] || [[ ${last_chk} -eq 4 ]];then # not set all 
    local chk_cmd=$("${mysql_cmd}" -S"${Mysql_sock}"  -e "show status like 'Uptime'" |grep -c 'Uptime' )
    Command="${CMD} -S ${Mysql_sock} --backup ${Everyday_bak_dir}"
elif [[ ${last_chk} -eq 1 ]] || [[ ${last_chk} -eq 5 ]];then  # set db
    local chk_cmd=$("${mysql_cmd}" -S"${Mysql_sock}"  -e "show status like 'Uptime'" |grep -c 'Uptime' )
    Command="${CMD} -S ${Mysql_sock} --databases="${Database}" --backup ${Everyday_bak_dir}"

elif [[ ${last_chk} -eq 2 ]];then # set user
    local chk_cmd=$("${mysql_cmd}" -S"${Mysql_sock}" -u"${User}" -e "show status like 'Uptime'" |grep -c 'Uptime' )
    Command="${CMD} -S ${Mysql_sock} -u"${User}" --backup ${Everyday_bak_dir}"

elif [[ ${last_chk} -eq 3 ]];then # set user db
    local chk_cmd=$("${mysql_cmd}" -S"${Mysql_sock}" -u"${User}" -e "show status like 'Uptime'" |grep -c 'Uptime' )
    Command="${CMD} -S ${Mysql_sock} -u"${User}" --databases="${Database}" --backup ${Everyday_bak_dir}"


elif [[ ${last_chk} -eq 6 ]];then # set user pass 
    local chk_cmd=$("${mysql_cmd}" -S"${Mysql_sock}" -u"${User}" -p"${Password}" -e "show status like 'Uptime'" |grep -c 'Uptime' )
    Command="${CMD} -S ${Mysql_sock} -u"${User}" -p"${Password}" --backup ${Everyday_bak_dir}"

elif [[ ${last_chk} -eq 7 ]];then # set all
    local chk_cmd=$("${mysql_cmd}" -S"${Mysql_sock}" -u"${User}" -p"${Password}" -e "show status like 'Uptime'" |grep -c 'Uptime' )
    #local chk_cmd=$("${mysql_cmd}" -S"${Mysql_sock}" -u"${User}" -p"${Password}" -e "show databases" |grep -c "${Database}" )
    Command="${CMD} -S ${Mysql_sock} -u"${User}" -p"${Password}" --databases="${Database}" --backup ${Everyday_bak_dir}"

else
    echo "Check Error For Function chk_user_pass_sock"
    exit 2
fi
if [[ "${chk_cmd}" == '1' ]] ;then
    return 0
else
    return 1
fi

}


########################################################################################
if [[ ${UID} -ne 0 ]];then

    echo "Please Use Root Run This Scripts"
    exit 1
else


########################################################################################

Today=$(date +%F)

Everyday_bak_dir="${Backup_dir}/${Today}"

if [[ ! -d "${Everyday_bak_dir}" ]];then
    mkdir -p "${Everyday_bak_dir}"
fi
########################################################################################
CMD=$(which innobackupex)


if chk_mysql_runing ;then
    # mysql runing
    if chk_user_pass_sock ;then
        ${Command}
        echo "mysql backup is ok"
    else
        echo "ERROR , mysql backup is EROOR "
    fi
        
else
    # mysql not runing
    echo "Please Start Mysql Services"
fi

########################################################################################
#Auto Crontab
path_dir=$(cd "$(dirname "${0}")" && pwd)
file=$(echo "$0"|awk -F '/' '{print $NF}')
abs_file="${path_dir}/${file}"
log_file="${abs_file}.log"

if [[ $(grep -c "${abs_file}" /etc/crontab) -eq 0  ]] && [[ $UID -eq 0 ]]
then
    echo "00 04 * * * ${USER} ${SHELL} ${abs_file} &>> ${log_file} ">> /etc/crontab
fi
########################################################################################
fi