mysql恢复脚本(利用master的备份搭建slave)

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#!/bin/bash     #################################################################################################### #传参列表 #sh 100.sh 192.168.1.1 mysql mysqlbak-192.168.1.2-4003-2020-10-29 /home/backup 192.168.1.3 4003 192.168.1.2 4003   remote_backup_host=$1 #远程备份文件服务器IP rsync_dir=$2          #远程服务器备份路径对应的rsync tag r_filename=$3         #备份文件前缀，格式mysqlbak-数据库实例IP-数据库实例PORT-YYYY-MM-DD r_bacupdir=$4         #恢复机器上传备份文件的路径 r_host=$5             #新建slave对应的主机IP r_port=$6             #新建slave对应的实例port r_masterhost=$7       #master实例的IP r_masterport=$8       #master实例对应的port   ####待完成的功能 #r_mysqlversion=$9 #r_type=${10}        #r_gtid=${11}     ####################################全局变量########################################################## repl_user='slave_client' repl_password='xxxxxx'   ######################################################################################################   function check_parameters() {     if [[ $total_parameters -lt 8 ]];then         echo "参数个数不匹配,请检查"         echo "------------usage-----------------"         echo "remote_backup_host=\$1 #远程备份文件服务器IP"         echo "rsync_dir=\$2          #远程服务器备份路径对应的rsync tag"         echo "r_filename=\$3         #备份文件前缀，格式mysqlbak-数据库实例IP-数据库实例PORT-YYYY-MM-DD"         echo "r_bacupdir=\$4         #恢复机器上传备份文件的路径"         echo "r_host=\$5             #新建slave对应的主机IP"         echo "r_port=\$6             #新建slave对应的实例port"         echo "r_masterhost=\$7       #master实例的IP"         echo "r_masterport=\$8       #master实例对应的port"         exit     fi }   #检查恢复的机器r_host上是否存在r_port对应的服务 function check_r_port() {     check_port=$(netstat -nltp | awk '{print $4}' | awk -F':' '{if($NF=='$r_port')print $NF}' | wc -l)     if [[ $check_port -ne 0 ]];then         echo "$r_host上$r_port端口已被占用,请检查"         exit     else         echo "$r_host上不存在$r_port端口"     fi }   #将备份文件传到待恢复的机器上 function download_backup_file() {       echo "开始拷贝备份文件到$r_host主机$r_bacupdir目录下"     /usr/bin/rsync -aP --bwlimit=150000 root@${remote_backup_host}::${rsync_dir}/${r_filename}.xbstream ${r_bacupdir} >/dev/null 2>&1     if [[ $? -ne 0 ]];then         echo "备份数据文件不存在或传输失败,请检查"         exit     else         echo "完成拷贝备份文件$r_filename.xbstream"     fi           echo "开始拷贝参数文件到$r_host主机$r_bacupdir目录下"     /usr/bin/rsync -auv root@${remote_backup_host}::mysql/${r_filename}.cnf ${r_bacupdir} >/dev/null 2>&1     if [[ $? -ne 0 ]];then         echo "备份参数文件不存在或传输失败,请检查"         exit     else         echo "完成拷贝参数文件$r_filename.cnf"     fi }     #解压备份文件 function unpack() {     if [[ ! -d ${r_bacupdir}/${r_filename}/ ]];then         mkdir -p ${r_bacupdir}/${r_filename}/     else         rm -fr ${r_bacupdir}/${r_filename}/*     fi           #解压xbstream文件     /usr/bin/xbstream -C ${r_bacupdir}/${r_filename} -x -v  < ${r_bacupdir}/${r_filename}.xbstream >/dev/null 2>&1     if [[ $? -ne 0 ]];then         echo "xbstream file unpack faild"     fi           #解压qp文件，加压完成后清理qp文件，最终删除xbstream备份文件     /usr/bin/innobackupex --decompress --parallel=4 ${r_bacupdir}/${r_filename} >/dev/null 2>&1     if [[ $? -ne 0 ]];then         echo "qp file unpack faild"     else         find ${r_bacupdir}/${r_filename} -name "*.qp" | xargs rm         rm -f ${r_bacupdir}/${r_filename}.xbstream     fi }     #修改参数文件并拷贝到指定路径下,默认/etc/mysql/my${r_port}.cnf function modify_cfg_file() {     #修改server-id,由IP末尾2分位和端口拼接组成     suffix_ip=$(echo $r_host | awk -F'.' '{print $3$4}')     server_id="$suffix_ip$r_port"     sed -i "s#server-id.*#server-id='${server_id}'#g" $r_bacupdir/$r_filename.cnf           #修改report_host,替换为r_host     sed -i "s#report_host.*#report_host='${r_host}'#g" $r_bacupdir/$r_filename.cnf           if [[ ! -d /etc/mysql ]];then         mkdir -p /etc/mysql         mv $r_bacupdir/$r_filename.cnf /etc/mysql/my${r_port}.cnf     else         mv $r_bacupdir/$r_filename.cnf /etc/mysql/my${r_port}.cnf     fi           if [[ $? -ne 0 ]];then         echo "参数文件修改或者创建失败，请检查"         exit     else         echo "参数文件修改和创建成功"     fi       }     #apply-log function exec_apply_log() {     /usr/bin/innobackupex  --apply-log --use-memory=4G ${r_bacupdir}/${r_filename}   >/dev/null 2>&1     if [[ $? -ne 0 ]];then         echo "执行apply-log失败,请检查"         exit     else         echo "执行apply-log成功"     fi }   #创建目录 function exec_mkdir() {     echo "创建mysql相关目录结构"     mkdir -pv /home/data/my${r_port}/{data,log,socket,tmp}     touch /home/data/my${r_port}/log/error.log }     #copy-back function exec_copy_back() {     /usr/bin/innobackupex --defaults-file=/etc/mysql/my${r_port}.cnf --copy-back --parallel=4  ${r_bacupdir}/${r_filename} >/dev/null 2>&1     if [[ $? -ne 0 ]];then         echo "执行copy-back失败,请检查"         exit     else         echo "执行copy-back成功"     fi }   #mysql相关目录授权 function re_grant() {     echo "mysql相关目录授权"     chown -R mysql:mysql /home/data/my${r_port}/* }   #启动实例并检查是否再1分钟内启动成功 function start_and_check_mysql() {     echo "开始启动$r_host:$r_port实例"     mysqld_safe --defaults-file=/etc/mysql/my${r_port}.cnf --user=mysql >/dev/null 2>&1 &           i=0     while true     do         check_1=$(mysql -S /home/data/my${r_port}/socket/mysqld.sock 2>/dev/null -e "select 1;")               if [[ ! -z $check_1 ]];then             echo "$r_host:$r_port实例已启动成功"             break         else             sleep 5             let i=i+5             if [[ $i -gt 60 ]];then                 echo "$r_host:$r_port实例启动超过1分钟，请检查"                 exit             fi         fi     done }   #change 语句拼接 function change_and_startslave() {     echo "生成gtid_purged_info信息"     cat $r_bacupdir/$r_filename/xtrabackup_binlog_info | xargs -n1 | sed '1,2d' > gtid_purged_info           gtid_purged_content=""     while read line     do         gtid_purged_content=$gtid_purged_content$line     done < gtid_purged_info           echo "拼接启动slave前的初始操作并启动slave"     [ -f change.sql ] && rm -rf change.sql           echo "reset slave all;" >> change.sql     echo "reset master;" >> change.sql     echo "SET @@SESSION.SQL_LOG_BIN= 0;" >> change.sql     echo "SET @@GLOBAL.GTID_PURGED="\'$gtid_purged_content\'";" >> change.sql     echo "SET @@SESSION.SQL_LOG_BIN = 1;"  >> change.sql           echo "CHANGE MASTER TO     MASTER_HOST="\'${r_masterhost}\'",     MASTER_PORT=${r_masterport},     MASTER_USER="\'${repl_user}\'",     MASTER_PASSWORD="\'${repl_password}\'",     MASTER_AUTO_POSITION = 1;" >> change.sql           echo "start slave;" >> change.sql           mysql -S /home/data/my${r_port}/socket/mysqld.sock 2>/dev/null < change.sql }       function main() {     total_parameters=$#     check_parameters     check_r_port     download_backup_file     unpack     modify_cfg_file     exec_apply_log     exec_mkdir     exec_copy_back     re_grant     start_and_check_mysql     change_and_startslave }   main $@