一分钟完成MySQL5.7安装部署

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Part1:写在最前

MYSQL5.7.15是截止至本文撰写当日，mysql官网的最新社区版，mysql5.7的多项功能优化可以用激动人心来形容，嫌安装麻烦？没关系，跟着本文，带你1分钟搞定MySQL5.7.15数据库安装部署。

Part2:仅仅安装就够了？

不，当然不够，MySQL5.7的多项功能特性更新，无法一一赘述，因此，我们先从和本文最相关的my.cnf，来解读一些MySQL5.7的部分新特性。

在之前我写过一篇MySQL5.6的新特性参数，诸如：

innodb_buffer_pool_dump_at_shutdown=1  它dump的不是数据，是Id号

innodb_buffer_pool_load_at_startup=1

开启这个两个参数当数据库重启后把这些热数据重新加载回去

只有正常关库才会dump热数据块，宕机和kill -9不会

更多5.6安装内容可移步：

http://suifu.blog.51cto.com/9167728/1846671

在5.7里，一个新的系统参数：innodb_buffer_pool_dump_pct,其默认值为25

允许DBA控制每个缓冲池最近使用页的百分比来导出，以减缓导出innodb buffer pool所有页占用过大的磁盘。如果innodb buffer pool里缓存了100个页，那么会将最近使用的25个页导出去，最大值是100，意思为全部导出，如下图所示：

注：在MariaDB10.1里，同样提供了该参数，不过其默认值是100

在线调整innodb_buffer_pool_size,不用重启mysql进程

在MySQL5.6/MariaDB 10.1版本，调整该参数必须重启MySQL进程才可以生效，而mysql5.7版本里，可以直接动态设置，非常方便。

这个功能应用场景如：

1.机器新增内存，DBA忘记调大该参数；

2.工作交接，新来的DBA发现前任DBA对该参数设置不合理。

下面在我机器里进行测试，把512M内存变更为256M，见下图：

需注意的是，在调整buffer_pool期间，用户的请求会被阻塞，直到调整完毕，所以请勿在高峰期调整。

Part3:整个流程分3步

1.mysql官网下载二进制版本的mysql5.7.15安装包(mysql-5.7.15-linux-glibc2.5-x86_64.tar.gz)至/root目录

2.执行下文所述的mysql_auto_install.sh脚本

3.输入您设置的密码登录数据库

Part4:自动化脚本

[root@HE2 ~]# cat mysql_auto_install.sh###### 二进制自动安装数据库脚本root密码MANAGER将脚本和安装包放在/root目录即可#####################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############ ###################author：[e-mail]####################!/bin/bash  # Check if user is rootif [ $(id -u) != "0" ]; then    echo "Error: You must be root to run this script, please use root to install"    exit 1fi clearecho "========================================================================="echo "A tool to auto-compile & install MySQL 5.7.15 on Redhat/CentOS Linux "echo "========================================================================="cur_dir=$(pwd) #set mysql root password    echo "==========================="     mysqlrootpwd="MANAGER"    echo -e "Please input the root password of mysql:"    read -p "(Default password: MANAGER):" mysqlrootpwd    if [ "$mysqlrootpwd" = "" ]; then        mysqlrootpwd="MANAGER"    fi    echo "==========================="    echo "MySQL root password:$mysqlrootpwd"    echo "===========================" #which MySQL Version do you want to install?echo "==========================="      isinstallmysql57="n"    echo "Install MySQL 5.7.15,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 5.7.15"     isinstallmysql57="y"    ;;    *)    echo "INPUT error,You will exit install MySQL 5.7.15"     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_dir cat >>/etc/security/limits.conf<<EOF* soft nproc 65535* hard nproc 65535* soft nofile 65535* hard nofile 65535EOF echo "fs.file-max=65535" >> /etc/sysctl.conf} #Install MySQLfunction InstallMySQL57(){echo "============================Install MySQL 5.7.15=================================="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`.bakfi echo "============================MySQL 5.7.15 installing…………========================="#mysql directory configurationtar xvf /root/mysql-5.7.15-linux-glibc2.5-x86_64.tar.gzmv /root/mysql-5.7.15-linux-glibc2.5-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 addr" | awk '{ print $2}'| awk -F. '{ print $3$4}'`cat >>/etc/my.cnf<<EOF[client]port=3306socket=/tmp/mysql.sockdefault-character-set=utf8 [mysql]no-auto-rehashdefault-character-set=utf8 [mysqld]port=3306character-set-server=utf8socket=/tmp/mysql.sockbasedir=/usr/local/mysqldatadir=/data/mysqlexplicit_defaults_for_timestamp=truelower_case_table_names=1back_log=103max_connections=3000max_connect_errors=100000table_open_cache=512external-locking=FALSEmax_allowed_packet=32Msort_buffer_size=2Mjoin_buffer_size=2Mthread_cache_size=51query_cache_size=32M#query_cache_limit=4Mtransaction_isolation=REPEATABLE-READtmp_table_size=96Mmax_heap_table_size=96M ###***slowqueryparameterslong_query_time=1slow_query_log = 1slow_query_log_file=/data/slowlog/slow.log ###***binlogparameterslog-bin=mysql-binbinlog_cache_size=4Mmax_binlog_cache_size=8Mmax_binlog_size=1024Mbinlog_format=MIXEDexpire_logs_days=7 ###***relay-logparameters#relay-log=/data/3307/relay-bin#relay-log-info-file=/data/3307/relay-log.info#master-info-repository=table#relay-log-info-repository=table#relay-log-recovery=1 #***MyISAMparameterskey_buffer_size=16Mread_buffer_size=1Mread_rnd_buffer_size=16Mbulk_insert_buffer_size=1M #skip-name-resolve ###***master-slavereplicationparametersserver-id=$SERVERID#slave-skip-errors=all #***Innodbstorageengineparametersinnodb_buffer_pool_size=512Minnodb_data_file_path=ibdata1:10M:autoextend#innodb_file_io_threads=8innodb_thread_concurrency=16innodb_flush_log_at_trx_commit=1innodb_log_buffer_size=16Minnodb_log_file_size=512Minnodb_log_files_in_group=2innodb_max_dirty_pages_pct=75innodb_buffer_pool_dump_pct=75innodb_lock_wait_timeout=50innodb_file_per_table=on [mysqldump]quickmax_allowed_packet=32M [myisamchk]key_buffer=16Msort_buffer_size=16Mread_buffer=8Mwrite_buffer=8M [mysqld_safe]open-files-limit=8192log-error=/data/mysql/error.logpid-file=/data/mysql/mysqld.pid EOF    /usr/local/mysql/bin/mysqld --defaults-file=/etc/my.cnf --user=mysql --datadir=/data/mysql --basedir=/usr/local/mysql --initialize-insecure cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqldchmod 700 /etc/init.d/mysqldchkconfig --add mysqldchkconfig --level 2345 mysqld on cat >> /etc/ld.so.conf.d/mysql-x86_64.conf<<EOF/usr/local/mysql/libEOFldconfig if [ -d "/proc/vz" ];thenulimit -s unlimitedfi /etc/init.d/mysqld start  cat >> /etc/profile <<EOFexport PATH=$PATH:/usr/local/mysql/binexport LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/mysql/libEOF /usr/local/mysql/bin/mysqladmin -u root password $mysqlrootpwd cat > /tmp/mysql_sec_script<<EOFuse mysql;delete from mysql.user where user!='root' or host!='localhost';grant all privileges on *.* to 'sys_admin'@'%' identified by 'MANAGER';flush privileges;EOF /usr/local/mysql/bin/mysql -u root -p$mysqlrootpwd -h localhost < /tmp/mysql_sec_script #rm -f /tmp/mysql_sec_script  #/etc/init.d/mysqld restart    echo "============================MySQL 5.7.15 install completed========================="}   function CheckInstall(){echo "===================================== Check install ==================================="clearismysql=""echo "Checking..." if [ -s /usr/local/mysql/bin/mysql ] && [ -s /usr/local/mysql/bin/mysqld_safe ] && [ -s /etc/my.cnf ]; then  echo "MySQL: OK"  ismysql="ok"  else  echo "Error: /usr/local/mysql not found!!!MySQL install failed."fi if [ "$ismysql" = "ok" ]; thenecho "Install MySQL 5.7.15 completed! enjoy it."echo "========================================================================="netstat -ntlelseecho "Sorry,Failed to install MySQL!"echo "You can tail /root/mysql-install.log from your server."fi} #The installation logInitInstall 2>&1 | tee /root/mysql-install.logInstallDependsAndOpt 2>&1 | tee -a /root/mysql-install.logInstallMySQL57 > /dev/nullCheckInstall 2>&1 | tee -a /root/mysql-install.log

Part5:登录&享受吧

输入用户名密码（默认为MANAGER)登录数据库

至此，MySQL5.7.15安装完成

——总结——

MySQL5.7拥有诸多让我们激动和期待的新功能，限于文章篇幅原因，这里仅仅介绍冰山一角。由于笔者的水平有限，编写时间也很仓促，文中难免会出现一些错误或者不准确的地方，不妥之处恳请读者批评指正。

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