MySQL 5.7.18 在centos下安装记录

一个朋友找我如何在linux下安装mysql5.7.18，我稍微整理下了下记录，如下：

下载地址：

MySQL5.7.18参数官方网址：https://dev.mysql.com/doc/refman/5.7/en/server-system-variables.html#sysvar_max_user_connections，下载完后的包是mysql-5.7.18-linux-glibc2.5-x86_64.tar.gz

上面的网址如果找不到，就来百度云盘下载：链接: https://pan.baidu.com/s/1bECiEM 密码: c2my

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安装脚本myql_install_5.7.18.sh，可以执行脚本，实现这个一键式安装好mysql5.7.18：

#!/bin/bash# install the basie libuseradd mysql yum install cmake -yyum install -y libtoolizeyum install gcc gcc-c++ -yyum install -y ncurses-devel.x86_64yum install -y cmake.x86_64yum install -y libaio.x86_64yum install -y bison.x86_64yum install -y gcc-c++.x86_64# unziprm -rf /usr/local/mysql-5.7.18*tar -xvf mysql-5.7.18-linux-glibc2.5-x86_64.tar.gz -C /usr/localmv /usr/local/mysql-5.7.18-linux-glibc2.5-x86_64 /usr/local/mysql3308cp my.cnf /tmp/cp /tmp/my.cnf /usr/local/mysql3308/my.cnf# add mysql account,create the basic directoryrm -rf /home/data/mysql3308/datamkdir -p /home/data/mysql3308/datacd /home/data/mysql3308/datachown -R mysql:mysql /usr/local/mysql3308mkdir -p /home/data/mysql3308/binlog/chown -R mysql:mysql /home/data/mysql3308/binlog/# init databasesrm -rf /home/data/mysql3308/data/*cd /usr/local/mysql3308/time /usr/local/mysql3308/bin/mysqld --defaults-file=/usr/local/mysql3308/my.cnf --initialize-insecure --user=mysql# “MySQL Enterprise Audit Security Considerations”#mkdir -p /home/data/mysql/data/ssl/chown -R mysql:mysql  /home/data/mysql/data/sslcd /usr/local/mysql3308/time bin/mysql_ssl_rsa_setup --datadir=/home/data/mysql/data/ssl/# set the auto start on linux server startedrm -rf /etc/init.d/mysqld3308*cp support-files/mysql.server /etc/init.d/mysqld3308chmod 700 /etc/init.d/mysqld3308echo "export PATH=$PATH:/usr/local/mysql3308/bin">>/etc/profile chkconfig --add mysqld3308source /etc/profilevim /etc/init.d/mysqld3308basedir=/usr/local/mysql3308datadir=/home/data/mysql3308/data# start the mysql serverecho "" > /usr/local/mysql3308/mysqld.logchown -R mysql:mysql /usr/local/mysql3308/mysqld.logservice mysqld3308 start

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启动报错：

[root@mydb1 mysql3308]# service mysqld3308 startStarting MySQL SUCCESS! [root@mydb1 mysql3308]# 170605 15:26:25 mysqld_safe A mysqld process already exists[root@mydb1 mysql3308]# 

后台error日志里面的启动报错信息：

2017-06-05T09:09:32.291104Z 0 [Note] Plugin 'FEDERATED' is disabled.2017-06-05T09:09:32.292966Z 0 [Note] InnoDB: Buffer pool(s) load completed at 170605 17:09:322017-06-05T09:09:32.304707Z 0 [Warning] Failed to set up SSL because of the following SSL library error: SSL context is not usable without certificate and private key2017-06-05T09:09:32.304749Z 0 [Note] Server hostname (bind-address): '*'; port: 33062017-06-05T09:09:32.304902Z 0 [Note] IPv6 is available.2017-06-05T09:09:32.304930Z 0 [Note]   - '::' resolves to '::';2017-06-05T09:09:32.304964Z 0 [Note] Server socket created on IP: '::'.2017-06-05T09:09:32.305012Z 0 [ERROR] Can't start server: Bind on TCP/IP port: Address already in use2017-06-05T09:09:32.305023Z 0 [ERROR] Do you already have another mysqld server running on port: 3306 ?2017-06-05T09:09:32.305041Z 0 [ERROR] Aborting2017-06-05T09:09:32.305060Z 0 [Note] Binlog end

解决方法，以下2个操作即可
vim /etc/init.d/mysqld3308
（1）将basedir和datadir变成下面
basedir=/usr/local/mysql3308
datadir=/home/data/mysql3308/data

（2）
把所有的/usr/local/mysql变成/usr/local/mysql3308

然后重启搞定。