CentOS6.x/CentOS7.x一键安装MySQL5.6/5.7并定制数据目录

一、系统环境及说明

系统：CentOS6.x_x64  MySQL:社区版5.6.21,开源数据库用的最多的MySQL，编译安装比较繁琐，yum安装版本比较低且默认安装的位置是/var/下，本次采用官方下载的rpm包，通过脚本自动化安装并定制数据目录到独立分区中(本次为/data1目录)

另外补充部分是给出针对Ubuntu/CentOS7的实际配置;最后提供了脚本一键安装;注意的是glibc版本要大于2.12

二、准备安装包

1、官方下载

#https://dev.mysql.com/downloads/mysql/5.6.html#downloads 选择对应的版本和平台软件包：

MySQL-shared-compat-5.6.x-1.el6.x86_64.rpm    #x就是你下的版本号以下类同 MySQL-devel-5.6.x-1.el6.x86_64.rpm MySQL-shared-5.6.x-1.el6.x86_64.rpm MySQL-client-5.6.x-1.el6.x86_64.rpm MySQL-test-5.6.x-1.el6.x86_64.rpm MySQL-server-5.6.x-1.el6.x86_64.rpm

2、本实验用到的包

包含了以下软件包(也是从官方下载)：

MySQL-shared-compat-5.6.21-1.el6.x86_64.rpm MySQL-devel-5.6.21-1.el6.x86_64.rpm MySQL-shared-5.6.21-1.el6.x86_64.rpm MySQL-client-5.6.21-1.el6.x86_64.rpm MySQL-test-5.6.21-1.el6.x86_64.rpm MySQL-server-5.6.21-1.el6.x86_64.rpm

三、安装mysql5.6

1、如果是官方下载的请直接执行下面操作

#rpm -ivh MySQL-shared-compat-5.6.x-1.el6.x86_64.rpm      #提供基础依赖组件，需要第一个安装 #yum remove mysql-libs -y              #御载默认自带的mysql-lib #yum install libaio -y                        #安装libiao #rpm -ivh MySQL-devel-5.6.x-1.el6.x86_64.rpm #rpm -ivh MySQL-shared-5.6.x-1.el6.x86_64.rpm #rpm -ivh MySQL-client-5.6.x-1.el6.x86_64.rpm #rpm -ivh MySQL-test-5.6.x-1.el6.x86_64.rpm #rpm -ivh MySQL-server-5.6.x-1.el6.x86_64.rpm

说明:以上直接安装的数据目录在/var/lib/mysql下 但有时你并不希望 数据目录和/目录在一个分区(磁盘)上 因此可通过脚本重重新初始化安装到别的目录;完成自定制;

2、本实验脚本如下：

将以上rpm包放到一个目录,创建my.cnf文件(公供参考)

cat my.cnf

[mysqld] # GENERAL # user                          = mysql default-storage-engine        = InnoDB socket                        = /data1/mysqldb/data/mysql.sock pid-file                      = /data1/mysqldb/data/mysql.pid # MyISAM # key-buffer-size                = 32M myisam-recover                = FORCE,BACKUP # SAFETY # max-allowed-packet            = 16M max-connect-errors            = 1000000 # DATA STORAGE # datadir                        = /data1/mysqldb/data # BINARY LOGGING # log-bin                        = /data1/mysqldb/log/mysql-bin expire-logs-days              = 14 sync-binlog                    = 1 # CACHES AND LIMITS # tmp-table-size                = 32M max-heap-table-size            = 32M query-cache-type              = 0 query-cache-size              = 0 max-connections                = 500 thread-cache-size              = 50 open-files-limit              = 65535 table-definition-cache        = 1024 table-open-cache              = 2048 # INNODB # innodb-flush-method            = O_DIRECT innodb-log-files-in-group      = 2 innodb-log-file-size          = 64M innodb-flush-log-at-trx-commit = 1 innodb-file-per-table          = 1 innodb-buffer-pool-size        = 256M # LOGGING # log-error                      = /data1/mysqldb/log/mysql-error.log log-queries-not-using-indexes  = 0 slow-query-log                = 1 slow-query-log-file            = /data1/mysqldb/log/mysql-slow.log

注意:生产环境有些优化参数请按需修改;以上仅供参考;您也可以到https://tools.percona.com/  网站填写相关参数生成配置文件;

并在目录中创建一个install.sh脚本内容如下:

cat install.sh

#!/bin/bash

src_dir=$(pwd)

cd $src_dir

rpm -ivh MySQL-shared-compat-5.6.21-1.el6.x86_64.rpm

yum remove mysql-libs -y

yum install libaio -y

rpm -ivh MySQL-devel-5.6.21-1.el6.x86_64.rpm

rpm -ivh MySQL-shared-5.6.21-1.el6.x86_64.rpm

rpm -ivh MySQL-client-5.6.21-1.el6.x86_64.rpm

rpm -ivh MySQL-test-5.6.21-1.el6.x86_64.rpm

rpm -ivh MySQL-server-5.6.21-1.el6.x86_64.rpm

#service mysql start && echo "mysql5.6.21 has installes sucess!"

#mysql_root_pwd=`gawk -F : '{ print $4 }' /root/.mysql_secret`

#echo "A random root password has been set. You will find it in '/root/.mysql_secret'."

#echo "The random root password was:'${mysql_root_pwd// }'"

service mysql stop

[ -d /data1/mysqldb/data ] || mkdir -p /data1/mysqldb/data

[ -d /data1/mysqldb/log ] || mkdir -p /data1/mysqldb/log

chown mysql.mysql /data1/mysqldb -R

cd $src_dir

cp ${src_dir}/my.cnf /etc

cd /usr/bin

./mysql_install_db --user=mysql --basedir=/usr --datadir=/data1/mysqldb/data  #迁移数据目录到/data1/mysqldb/data下可自行定制

cd /var/lib

mv mysql /tmp

mkdir mysql

chown mysql.mysql mysql

service mysql start && echo "Mysql root password was empty.Please change when you login mysql."

ln -s /data1/mysqldb/data/mysql.sock  /var/lib/mysql/mysql.sock      #由于一些mysql工具默认到这里找mysql.sock所以做个软链

  四、注意问题

1、关闭selinux否则脚本安装不成功

2、安装后系统自带的postfix和crontab工具被御了，重新yum安装 一次即可

3、mysql服务的root密码为空，请自行修改root密码

或在脚本中添加以下行 在mysql迁移好目录启动后自动修改mysql root密码

mysqladmin -u root password "123.com"     

补充部分:

CentOS7.x安装 mysql 5.7.21

到mysql官方下载Linux通用包wget https://cdn.mysql.com/Downloads/MySQL-5.7/mysql-5.7.21-linux-glibc2.12-x86_64.tar.gz

解压：

tar -xvf mysql-5.7.21-linux-glibc2.12-x86_64.tar.gz  -C /usr/local ln -sv mysql-5.7.21-linux-glibc2.12-x86_64  mysql

添加环境变量

cat /etc/profile.d/mysql.sh export PATH=/usr/local/mysql/bin:$PATH

初始化:

#useradd -r mysql #mkdir -pv /data/mysql #chown mysql.mysql /data/mysql #mysqld --initialize-insecure  --datadir=/data/mysql --user=mysql --basedir=/usr/local/mysql/ #mkdir /usr/local/mysql/etc/my.cnf.d #chown mysql.mysql -R /usr/local/mysql/etc #cp /etc/my.cnf /usr/local/mysql/etc/ #cat /usr/local/mysql/etc/my.cnf

[mysqld] datadir=/data/mysql socket=/tmp/mysql.sock [mysqld_safe] log-error=/usr/local/mysql/log/error.log pid-file=/var/run/mysql/mysql.pid !includedir /usr/local/mysql/etc/my.cnf.d

复制启动脚本：

#cp /usr/local/mysql/suppor-files/mysql.server /etc/init.d/mysqld #touch /usr/local/mysql/log/error.log  #chwon mysql.mysql /usr/local/mysql/log/error.log #chmod 755 /usr/local/mysql/log/error.log #chkconfig --add mysqld #chkconfig mysqld on #service mysqld start

Ubuntu 16.04上安装

下载同样的包

安装的步骤与上面CentOS7类似，不同的是ubuntu 16.04上不支持service 方式管理

因此需要复制

#cp /usr/local/mysql/suppor-files/mysql.server /etc/init.d/mysqld #sudo systemctl daemon-reload #chown root.mysql /usr/local/mysql -R #chmod 775 /usr/local/mysql -R #systemctl enable mysqld #systemctl start mysqld #systemctl status mysqld

如图:

mysql -uroot -p

如图：

注意安装后mysql root密码为空;请自行设置 root密码;以下脚本一键安装亦是如此！

一键安装脚本

以上在CentOS7上安装和Ubuntu 16.04下安装大同小异,均可以安装成功;因此整理成一键安装脚本!

#cat auto_install_mysql.sh

#!/bin/bash #version 2018-04-01 by san setenforce 0 yum install wget -y sourceDir=$(pwd) installDir=/usr/local mysqlData=/data1/mysqldb mysqlBaseDir=/usr/local/mysql mysqldb="mysql-5.7.21-linux-glibc2.12-x86_64.tar.gz" xtrabackup="percona-xtrabackup-24-2.4.8-1.el7.x86_64.rpm" check_mariadb(){ if [ $(rpm -qa|grep mariadb|wc -l) -gt 1 ] then     echo "Find mariadb installed!"     read -t 6 -p "default y|Y remove pause 6 seconds!n|N Cacle install!" yesNo     if [[ $yesNo == "n" || $yesNo == "N" ]]     then     echo "Cacle install mysqldb" && exit 0     else         yum -y remove mariadb mariadb-server         rm -rf /etc/my.cnf     fi fi } check_mariadb [ -f $sourceDir ]||mkdir $sourceDir -pv [[ $(id mysql >/dev/null && echo $?) == 0 ]] && echo "mysql is exsits!" || useradd -r mysql cd $sourceDir [ -f ${sourceDir}/${mysqldb} ] || wget https://cdn.mysql.com/Downloads/MySQL-5.7/mysql-5.7.21-linux-glibc2.12-x86_64.tar.gz tar -xvf  $mysqldb  -C $installDir cd $installDir ln -sv mysql-5.7.21-linux-glibc2.12-x86_64  mysql [ -f /etc/profile.d/mysql.sh ]|| echo "export PATH=$mysqlBaseDir/bin:$PATH" >/etc/profile.d/mysql.sh source /etc/profile.d/mysql.sh #创建mysql数据目录 [ -d $mysqlData ]|| mkdir -pv $mysqlData chown mysql.mysql $mysqlData $mysqlBaseDir/bin/mysqld --initialize-insecure  --datadir=$mysqlData --user=mysql --basedir=$mysqlBaseDir/ [ -d $mysqlBaseDir/etc/my.cnf.d ] || mkdir -pv $mysqlBaseDir/etc/my.cnf.d [ -d $mysqlBaseDir/log ] || mkdir -pv $mysqlBaseDir/log echo ' [mysqld] datadir=/data1/mysqldb socket=/data1/mysqldb/mysql.sock key_buffer_size        = 16M max_allowed_packet      = 16M thread_stack            = 192K thread_cache_size      = 8 query_cache_limit      = 1M query_cache_size        = 64M query_cache_type        = 1 symbolic-links=0 #binlog server-id              = 1 log_bin                = /data1/mysqldb/mysql-bin.log #建议打开 innodb_file_per_table=ON skip_name_resolve=ON [mysqld_safe] log-error=/usr/local/mysql/log/error.log pid-file=/var/run/mysql/mysql.pid !includedir /usr/local/mysql/etc/my.cnf.d ' >/$mysqlBaseDir/etc/my.cnf touch /usr/local/mysql/log/error.log chown mysql.mysql $mysqlBaseDir/* -R chown mysql.mysql /usr/local/mysql/etc/my.cnf.d -R #add manager script cp -rp $mysqlBaseDir/support-files/mysql.server /etc/init.d/mysqld chmod +x /etc/init.d/mysqld chkconfig --add mysqld chkconfig mysqld on systemctl daemon-reload service mysqld start ln -sv /data1/mysqldb/mysql.sock /tmp/mysql.sock ### echo "mysql root password is empty" echo 'install xtrabackup tool' cd $sourceDir [ -f ${sourceDir}/${xtrabackup} ] || wget https://www.percona.com/downloads/XtraBackup/Percona-XtraBackup-2.4.8/binary/RedHat/7/x86_64/percona-xtrabackup-24-2.4.8-1.el7.x86_64.rpm yum install ./percona-xtrabackup-24-2.4.8-1.el7.x86_64.rpm -y