MySQL5.6新特性: 1.优化器的改进:主要体现在索引条件pushdown以及多范围的读取数据，可降低过载。
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2,InnoDB的改进:MySQL InnoDB 存储引擎团队主要提供了 NOSQL 的访问接口，可通过 Memcached 的 API 直接访问 InnoDB 的表。
3，更好的复制:改进数据完整性和高可用性及性能方面大大提升。
安装环境， 一台Centos6.5 推荐二进制安装。 本文已经经过测试，作为生产库来说没有问题。每个公司需求不同可以稍稍改动，本文使用的是mysql-5.6.25-linux-glibc2.5-x86_64.tar.gz
如版本不同可以更改脚本的109 和110行替换mysql安装包名称。
2.开始安装，安装时把安装包放在root和脚本放在root下即可。
脚本如下:
[root@centos4 ~]# cat install-mysql.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############
######日志目录/log/mysql############
######端口号默认3306其余参数按需自行修改############
##################
#author：zhangbin
##################
#!/bin/bash
PATH=/bin:/sbin:/usr/bin:/usr/sbin:/opt/bin:/opt/sbin:~/bin
export PATH
# Check if user is root
if [ $(id -u) != "0" ]; then
echo "Error: You must be root to run this script, please use root to install"
exit 1
fi
clear
echo "========================================================================="
echo "A tool to auto-compile & install MySQL 5.6.25 on Redhat/CentOS Linux "
echo "========================================================================="
cur_dir=$(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 5.6.25,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 5.6.25"
isinstallmysql56="y"
;;
*)
echo "INPUT error,You will exit install MySQL 5.6.25"
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< * 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-5.6.25-linux-glibc2.5-x86_64.tar.gz mv /root/mysql-5.6.25-linux-glibc2.5-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< [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 = $SERVERID log-bin = mysql-bin sync_binlog = 1 binlog_cache_size = 4M max_binlog_cache_size = 4096M max_binlog_size = 1024M expire_logs_days = 60 key_buffer_size = 32M read_buffer_size = 1M read_rnd_buffer_size = 16M bulk_insert_buffer_size = 64M character-set-server=utf8 default-storage-engine = InnoDB binlog_format = row innodb_buffer_pool_dump_at_shutdown = 1 innodb_buffer_pool_load_at_startup = 1 binlog_rows_query_log_events = 1 explicit_defaults_for_timestamp = 1 #log_slave_updates=1 #gtid_mode=on #enforce_gtid_consistency=1 #innodb_write_io_threads = 8 #innodb_read_io_threads = 8 #innodb_thread_concurrency = 0 transaction_isolation = REPEATABLE-READ innodb_additional_mem_pool_size = 16M innodb_buffer_pool_size = 512M #innodb_data_home_dir = innodb_data_file_path = ibdata1:1024M:autoextend innodb_flush_log_at_trx_commit = 1 innodb_log_buffer_size = 16M innodb_log_file_size = 512M innodb_log_files_in_group = 2 innodb_max_dirty_pages_pct = 50 innodb_file_per_table = 1 innodb_locks_unsafe_for_binlog = 0 wait_timeout = 14400 interactive_timeout = 14400 skip-name-resolve [mysqldump] quick max_allowed_packet = 32M EOF /usr/local/mysql/scripts/mysql_install_db --basedir=/usr/local/mysql --datadir=/data/mysql --defaults-file=/etc/my.cnf --user=mysql cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld chmod 700 /etc/init.d/mysqld chkconfig --add mysqld chkconfig --level 2345 mysqld on cat >> /etc/ld.so.conf.d/mysql-x86_64.conf< /usr/local/mysql/lib EOF ldconfig if [ -d "/proc/vz" ];then ulimit -s unlimited fi /etc/init.d/mysqld start cat >> /etc/profile < export PATH=$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 $mysqlrootpwd cat > /tmp/mysql_sec_script< use mysql; delete from mysql.user where user!='root' or host!='localhost'; grant all privileges on *.* to 'sys_admin'@'%' identified by 'MANAGER'; flush privileges; EOF /usr/local/mysql/bin/mysql -u root -p$mysqlrootpwd -h localhost < /tmp/mysql_sec_script #rm -f /tmp/mysql_sec_script /etc/init.d/mysqld restart echo "============================MySQL 5.6.25 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 5.6.25 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 3.执行完毕输入: [root@centos4 ~]# source /etc/profile 启动： [root@centos4 ~]# /etc/init.d/mysqld start 4.解决无法远程连接数据库的出现1045 access denied for user 'root'@localhhost' using password yes 5.在mysql中执行 在mysql命令行中执行 SET PASSWORD FOR'root'@'localhost' = PASSWORD('123456'); GRANT ALL PRIVILEGES ON *.* TO 'root' @'%' IDENTIFIED BY '123456' WITH GRANT OPTION; flush privileges; 若以上方法不好使则: use mysql; UPDATE user SETPassword=PASSWORD('123456') where USER='root'; flush privileges;
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