mysql-5.7.21 二进制安装 | Jemalloc内存优化 | 备份恢复｜修改密码

简介

######数据库目录/usr/local/mysql##################数据目录/data/mysql##################慢日志目录/data/slowlog##################端口号默认3306其余参数按需自行修改############

安装脚本

#!/bin/bashcd /usr/local/src/if [ ! -f  mysql-5.7.21-linux-glibc2.12-x86_64.tar.gz  ]; thenwget https://cdn.mysql.com//Downloads/MySQL-5.7/mysql-5.7.21-linux-glibc2.12-x86_64.tar.gzfiyum install -y autoconf automake imake libxml2-devel expat-devel cmake gcc gcc-c++ libaio libaio-devel bzr bison libtool ncurses-devel  gcc gcc-c++  # Check if user is rootif [ $(id -u) != "0" ]; then    echo "Error: You must be root to run this script, please use root to install"    exit 1ficlearcd     /usr/local/srcif [ ! -f  jemalloc-5.0.1.tar.bz2  ]; thenyum install  bzip2 -ywget       https://github.com/jemalloc/jemalloc/releases/download/5.0.1/jemalloc-5.0.1.tar.bz2tar     -xjvf     jemalloc-5.0.1.tar.bz2cd jemalloc-5.0.1/./configure  -prefix=/usr/local/jemalloc    --libdir=/usr/local/libmake  && make installecho  /usr/local/lib >> /etc/ld.so.confldconfigficp /usr/local/lib/libjemalloc.so            /usr/libecho "========================================================================="echo "A tool to auto-compile & install MySQL 5.7.21 on Redhat/CentOS Linux "echo "========================================================================="cur_dir=$(pwd)#set mysql root password    echo "==========================="    mysqlrootpwd="123456"    echo -e "Please input the root password of mysql:"    read -p "(Default password: 123456):" mysqlrootpwd    if [ "$mysqlrootpwd" = "" ]; then        mysqlrootpwd="123456"    fi    echo "==========================="    echo "MySQL root password:$mysqlrootpwd"    echo "==========================="#which MySQL Version do you want to install?echo "==========================="    isinstallmysql57="n"    echo "Install MySQL 5.7.21,Please input y"    read -p "(Please input y , n):" isinstallmysql57    case "$isinstallmysql57" in    y|Y|Yes|YES|yes|yES|yEs|YeS|yeS)    echo "You will install MySQL 5.7.21"    isinstallmysql57="y"    ;;    *)    echo "INPUT error,You will exit install MySQL 5.7.21"    isinstallmysql57="n"    exit    esac    get_char()    {    SAVEDSTTY=`stty -g`    stty -echo    stty cbreak    #dd if=/dev/tty bs=1 count=1 2> /dev/null    stty -raw    stty echo    stty $SAVEDSTTY    }    echo ""    echo "Press any key to start...or Press Ctrl+c to cancel"    char=`get_char`# Initialize  the installation related content.function InitInstall(){    cat /etc/issue    uname -a    MemTotal=`free -m | grep Mem | awk '{print  $2}'`      echo -e "\n Memory is: ${MemTotal} MB "    #Set timezone    #rm -rf /etc/localtime    #ln -s /usr/share/zoneinfo/Asia/Shanghai /etc/localtime    #Delete Old Mysql program    rpm -qa|grep mysql    rpm -e mysql    #Disable SeLinux    if [ -s /etc/selinux/config ]; then    sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config    fi    setenforce 0}#Installation of depend on and optimization options.function InstallDependsAndOpt(){cd $cur_dircat >>/etc/security/limits.conf<> /etc/sysctl.confsysctl -p}#Install MySQLfunction InstallMySQL57(){echo "============================Install MySQL 5.7.21=================================="cd $cur_dir#Backup old my.cnf#rm -f /etc/my.cnfif [ -s /etc/my.cnf ]; then    mv /etc/my.cnf /etc/my.cnf.`date +%Y%m%d%H%M%S`.bakfiecho "============================MySQL 5.7.21 installing…………========================="#mysql directory configurationcd /usr/local/srctar  xvf   mysql-5.7.21-linux-glibc2.12-x86_64.tar.gzmv mysql-5.7.21-linux-glibc2.12-x86_64   /usr/local/mysqlgroupadd mysql -g 512useradd -u 512 -g mysql -s /sbin/nologin -d /home/mysql mysqlmkdir -p /data/mysqlmkdir -p /data/slowlogchown -R mysql:mysql /data/mysqlchown -R mysql:mysql /usr/local/mysqlchown -R mysql:mysql /data/slowlog#edit /etc/my.cnfSERVERID=`ifconfig eth0 | grep "inet" | awk '{ print $2}'| awk -F. '{ print $3$4}'`cat >>/etc/my.cnf<> /etc/ld.so.conf.d/mysql-x86_64.conf<> /etc/profile < /tmp/mysql_sec_script<&1 | tee /root/mysql-install.logInstallDependsAndOpt 2>&1 | tee -a /root/mysql-install.logInstallMySQL57 > /dev/nullCheckInstall 2>&1 | tee -a /root/mysql-install.log

备份

mysqldump  -uroot -p123456 -B  ultrax        --single-transaction  --master-data=2  > ultrax.sql-A  全备份-B  备份库（表结构和数据）--single-transaction    预防锁   数据一致性   确保本次会话(dump)时，不会看到其他会话已经提交了的数据。--master-data=2     注释记录复制信息                       =1      记录change  master to 语句

查看ＳＱＬ

egrep -v "#|\*|--|^$"    ultrax.sql

恢复

mysql  -uroot -p123456        < /root/ultrax.sql

修改密码

[mysqld]skip-grant-tables./mysqladmin -uroot -p passwordupdate user set password=password('root') where user='root';update user set authentication_string=PASSWORD('123456')  where user='root';