一、下載mysql安裝包

https://dev.mysql.com/downloads/mysql/5.7.html#downloads

選擇自己需要的版本，我這裡的是5.6.40版本

二、在root根目錄寫安裝的指令碼

vim mysql_install.sh

#!/bin/bash 
PATH=/bin:/sbin:/usr/bin:/usr/sbin:/opt/bin:/opt/sbin:~/bin
export PATH 
# Check if user is root 
if [ $(id -u) != "0" ]; then
    echo "Error: You must be root to run this script, please use root to install"
    exit 1 
fi
clear
echo "========================================================================="
echo "A tool to auto-compile & install MySQL 5.6.40 on RedHat/CentOS Linux "
echo "========================================================================="
cur_dir=$(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 "==========================="
isinstallmysql56="n"
echo "Install MySQL 5.6.40,Please input y"
read -p "(Please input y , n):" isinstallmysql56 
case "$isinstallmysql56" in
y|Y|Yes|YES|yes|yES|yEs|YeS|yeS) 
echo "You will install MySQL 5.6.40"
isinstallmysql56="y"
;; 
*) 
echo "INPUT error,You will exit install MySQL 5.6.40"
isinstallmysql56="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 
#yum -y remove mysql-server mysql mysql-libs 
#yum -y remove php-mysql 
#yum -y install yum-fastestmirror 
#yum -y update 
#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 InstallMySQL56() 
{ 
echo "============================Install MySQL 5.6.22=================================="
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
#mysql directory configuration 
groupadd mysql -g 512 
useradd -u 512 -g mysql -s /sbin/nologin -d /home/mysql mysql 
tar xvf /root/mysql-5.6.40-linux-glibc2.12-x86_64.tar.gz 
mv /root/mysql-5.6.40-linux-glibc2.12-x86_64 /usr/local/mysql
mkdir -p /data/mysql
mkdir -p /log/mysql
chown -R mysql:mysql /data/mysql
chown -R mysql:mysql /usr/local/mysql
chown -R mysql:mysql /log
#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] 
default-character-set=utf8 
[mysqld] 
port= 3306 
socket= /tmp/mysql.sock 
basedir= /usr/local/mysql
datadir= /data/mysql
open_files_limit    = 3072 
back_log = 103 
max_connections = 800 
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 
tmp_table_size = 96M 
max_heap_table_size = 96M 
slow_query_log = 1 
slow_query_log_file = /log/mysql/slow.log 
log-error = /log/mysql/error.log 
long_query_time = 1 
server-id = $SERVERID 
log-bin = mysql-bin 
sync_binlog = 1 
binlog_cache_size = 4M 
max_binlog_cache_size = 8M 
max_binlog_size = 1024M 
expire_logs_days = 60 
key_buffer_size = 32M 
read_buffer_size = 1M 
read_rnd_buffer_size = 16M 
bulk_insert_buffer_size = 64M 
character-set-server=utf8 
default-storage-engine = InnoDB 
binlog_format = row 
innodb_buffer_pool_dump_at_shutdown = 1 
innodb_buffer_pool_load_at_startup = 1 
binlog_rows_query_log_events = 1 
explicit_defaults_for_timestamp = 1 
#log_slave_updates=1 
#gtid_mode=on 
#enforce_gtid_consistency=1 
#innodb_write_io_threads = 8 
#innodb_read_io_threads = 8 
#innodb_thread_concurrency = 0 
transaction_isolation = REPEATABLE-READ 
innodb_additional_mem_pool_size = 16M 
innodb_buffer_pool_size = 512M 
#innodb_data_home_dir = 
innodb_data_file_path = ibdata1:1024M:autoextend 
innodb_flush_log_at_trx_commit = 1 
innodb_log_buffer_size = 16M 
innodb_log_file_size = 512M 
innodb_log_files_in_group = 2 
innodb_max_dirty_pages_pct = 50 
innodb_file_per_table = 1 
innodb_locks_unsafe_for_binlog = 0 
wait_timeout = 14400 
interactive_timeout = 14400 
skip-name-resolve 
[mysqldump] 
quick 
max_allowed_packet = 32M 
EOF
/usr/local/mysql/scripts/mysql_install_db --basedir=/usr/local/mysql --datadir=/data/mysql --defaults-file=/etc/my.cnf --user=mysql 
cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld
chmod 700 /etc/init.d/mysqld
chkconfig --add mysqld 
chkconfig --level 2345 mysqld on 
cat >> /etc/ld.so.conf.d/mysql-x86_64.conf<<EOF
/usr/local/mysql/lib
EOF
ldconfig 
if [ -d "/proc/vz" ];then
ulimit -s unlimited 
fi
/etc/init.d/mysqld start 
cat >> /etc/profile <<EOF
export PATH=$PATH:/usr/local/mysql/bin
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/mysql/lib
EOF
source /etc/profile
/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 5.6.40 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 5.6.40 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 
CheckAndDownloadFiles 2>&1 | tee -a /root/mysql-install.log 
InstallDependsAndOpt 2>&1 | tee -a /root/mysql-install.log 
InstallMySQL56 2>&1 | tee -a /root/mysql-install.log 

CheckInstall 2>&1 | tee -a /root/mysql-install.log

三、把下載的安裝包通過xftp傳到root根目錄和指令碼放在一起

四、執行安裝指令碼 bash mysql_install.sh

這裡需要注意的是如果是在windows環境貼的指令碼傳到linux環境的，需要把編碼設定為unix。個人建議是直接在linux貼指令碼。

如果報EOF的結束錯誤，是因為EOF的前後不能有空格

五、啟動mysql：service mysqld start

六、進入mysql：mysql -uroot -pMANAGER

此處如果報mysql命令找不到：需要把mysql命令對映到/user/bin目錄。

ln -s /usr/local/mysql/bin/mysql /usr/bin