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

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

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[iyunv@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：rrhelei@126.com# ################## #!/bin/bash # Check if user is root if [ $(id -u) != "0" ]; then     echo "Error: You must be root to run this script, please use root to install"     exit 1 fi clear echo "=========================================================================" echo "A tool to auto-compile & install MySQL 5.7.15 on Redhat/CentOS Linux " echo "=========================================================================" cur_dir=$(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 65535 EOF echo "fs.file-max=65535" >> /etc/sysctl.conf } #Install MySQL function InstallMySQL57() { echo "============================Install MySQL 5.7.15==================================" cd $cur_dir #Backup old my.cnf #rm -f /etc/my.cnf if [ -s /etc/my.cnf ]; then     mv /etc/my.cnf /etc/my.cnf.`date +%Y%m%d%H%M%S`.bak fi echo "============================MySQL 5.7.15 installing…………=========================" #mysql directory configuration tar xvf /root/mysql-5.7.15-linux-glibc2.5-x86_64.tar.gz mv /root/mysql-5.7.15-linux-glibc2.5-x86_64 /usr/local/mysql groupadd mysql -g 512 useradd -u 512 -g mysql -s /sbin/nologin -d /home/mysql mysql mkdir -p /data/mysql mkdir -p /data/slowlog chown -R mysql:mysql /data/mysql chown -R mysql:mysql /usr/local/mysql chown -R mysql:mysql /data/slowlog #edit /etc/my.cnf SERVERID=`ifconfig eth0 | grep "inet addr" | awk '{ print $2}'| awk -F. '{ print $3$4}'` cat >>/etc/my.cnf<<EOF [client] port=3306 socket=/tmp/mysql.sock default-character-set=utf8 [mysql] no-auto-rehash default-character-set=utf8 [mysqld] port=3306 character-set-server=utf8 socket=/tmp/mysql.sock basedir=/usr/local/mysql datadir=/data/mysql explicit_defaults_for_timestamp=true lower_case_table_names=1 back_log=103 max_connections=3000 max_connect_errors=100000 table_open_cache=512 external-locking=FALSE max_allowed_packet=32M sort_buffer_size=2M join_buffer_size=2M thread_cache_size=51 query_cache_size=32M #query_cache_limit=4M transaction_isolation=REPEATABLE-READ tmp_table_size=96M max_heap_table_size=96M ###***slowqueryparameters long_query_time=1 slow_query_log = 1 slow_query_log_file=/data/slowlog/slow.log ###***binlogparameters log-bin=mysql-bin binlog_cache_size=4M max_binlog_cache_size=8M max_binlog_size=1024M binlog_format=MIXED expire_logs_days=7 ###***relay-logparameters #relay-log=/data/3307/relay-bin #relay-log-info-file=/data/3307/relay-log.info #master-info-repository=table #relay-log-info-repository=table #relay-log-recovery=1 #***MyISAMparameters key_buffer_size=16M read_buffer_size=1M read_rnd_buffer_size=16M bulk_insert_buffer_size=1M #skip-name-resolve ###***master-slavereplicationparameters server-id=$SERVERID #slave-skip-errors=all #***Innodbstorageengineparameters innodb_buffer_pool_size=512M innodb_data_file_path=ibdata1:10M:autoextend #innodb_file_io_threads=8 innodb_thread_concurrency=16 innodb_flush_log_at_trx_commit=1 innodb_log_buffer_size=16M innodb_log_file_size=512M innodb_log_files_in_group=2 innodb_max_dirty_pages_pct=75 innodb_buffer_pool_dump_pct=75 innodb_lock_wait_timeout=50 innodb_file_per_table=on [mysqldump] quick max_allowed_packet=32M [myisamchk] key_buffer=16M sort_buffer_size=16M read_buffer=8M write_buffer=8M [mysqld_safe] open-files-limit=8192 log-error=/data/mysql/error.log pid-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/mysqld chmod 700 /etc/init.d/mysqld chkconfig --add mysqld chkconfig --level 2345 mysqld on cat >> /etc/ld.so.conf.d/mysql-x86_64.conf<<EOF /usr/local/mysql/lib EOF ldconfig if [ -d "/proc/vz" ];then ulimit -s unlimited fi /etc/init.d/mysqld start cat >> /etc/profile <<EOF export PATH=$PATH:/usr/local/mysql/bin export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/mysql/lib EOF /usr/local/mysql/bin/mysqladmin -u root password $mysqlrootpwd cat > /tmp/mysql_sec_script<<EOF use mysql; delete from mysql.user where user!='root' or host!='localhost'; grant all privileges on *.* to 'sys_admin'@'%' identified by 'MANAGER'; flush privileges; EOF /usr/local/mysql/bin/mysql -u root -p$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 ===================================" clear ismysql="" 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" ]; then echo "Install MySQL 5.7.15 completed! enjoy it." echo "=========================================================================" netstat -ntl else echo "Sorry,Failed to install MySQL!" echo "You can tail /root/mysql-install.log from your server." fi } #The installation log InitInstall 2>&1 | tee /root/mysql-install.log InstallDependsAndOpt 2>&1 | tee -a /root/mysql-install.log InstallMySQL57 > /dev/null CheckInstall 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