MySQL5.7安装部署 / 憋错料

简介

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

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：

wKiom1fjcbXjsiZ7AACrCgT08qo965.jpg

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：

wKioL1fjdMSSu3ApAAES8CSuJE4611.jpg

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。

实战

Part1: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

Part2:自动化脚本

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[[email protected] ~]# 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：[email protected]#

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

#!/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

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"

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

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

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=4096M

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=50

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

/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."

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."

}

#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

1.先source一下环境变量文件使生效

[[email protected] ~] source /etc/profile

2.输入用户名密码（默认为MANAGER)登录数据库

wKioL1fg55bRtezyAAEwCj3jwm4534.jpg

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。

时间： 2024-10-12 11:05:34

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