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：
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。
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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[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：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$4}'
`
cat
>>
/etc/my
.cnf<<EOF
[client]
port=3306
socket=
/tmp/mysql
.sock
default-character-
set
=utf8
[mysql]
no-auto-rehash
default-character-
set
=utf8
[mysqld]
port=3306
character-
set
-server=utf8
socket=
/tmp/mysql
.sock
basedir=
/usr/local/mysql
datadir=
/data/mysql
pid-
file
=
/data/mysql/mysql
.pid
explicit_defaults_for_timestamp=
true
lower_case_table_names=1
back_log=103
max_connections=3000
max_connect_errors=100000
table_open_cache=512
external-locking=FALSE
max_allowed_packet=32M
sort_buffer_size=2M
join_buffer_size=2M
thread_cache_size=51
query_cache_size=32M
#query_cache_limit=4M
transaction_isolation=REPEATABLE-READ
tmp_table_size=96M
max_heap_table_size=96M
###***slowqueryparameters
long_query_time=1
slow_query_log = 1
slow_query_log_file=
/data/slowlog/slow
.log
###***binlogparameters
log-bin=mysql-bin
binlog_cache_size=4M
max_binlog_cache_size=4096M
max_binlog_size=1024M
binlog_format=MIXED
expire_logs_days=7
###***relay-logparameters
#relay-log=/data/3307/relay-bin
#relay-log-info-file=/data/3307/relay-log.info
#master-info-repository=table
#relay-log-info-repository=table
#relay-log-recovery=1
#***MyISAMparameters
key_buffer_size=16M
read_buffer_size=1M
read_rnd_buffer_size=16M
bulk_insert_buffer_size=1M
#skip-name-resolve
###***master-slavereplicationparameters
server-
id
=$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
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
1.先source一下环境变量文件使生效
[root@HE2 ~] source /etc/profile
2.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。
本文转自 dbapower 51CTO博客，原文链接：http://blog.51cto.com/suifu/1855415，如需转载请自行联系原作者
