-bash: ./scripts/mysql_install_db: /usr/bin/perl: bad interpreter: No such file or directory解决办法

今天安装mysql5.6.12安装有些许报错，我在这里贴出来，给大家分享一下：

安装完成后，初始化数据库报错如下：

[root@localhost mysql]# ./scripts/mysql_install_db --user=mysql
-bash: ./scripts/mysql_install_db: /usr/bin/perl: bad interpreter: No such file or
directory
貌似提示注释器错误，没有/usr/bin/perl文件或者档案，解决办法（安装perl跟perl-devel即可）：
执行 yum -y install perl perl-devel
后在初始化数据库即可。

启动mysql报错如下：
[root@localhost mysql]# /etc/init.d/mysqld start
Starting MySQL.............. ERROR! The server quit without updating PID file (/var/lib/mysql/localhost.localdomain.pid).
查看日志文件有以下错误日志:
2013-08-08 13:07:44 21805 [ERROR] Fatal error: Can't open and lock privilege tables: Table 'mysql.user' doesn't exist
130808 13:07:45 mysqld_safe mysqld from pid file /var/lib/mysql/localhost.localdomain.pid ended
解决办法：cp ./support-files/my-default.cnf /etc/my.cnf 后再重启即可

根据度娘的结果，有大虾说是机器内存的问题，我在这里贴出其解决方案：

查看日志文件，看看有什么提示！

生成my.cnf
sudo cp support-files/my-medium.cnf /etc/my.cnf

#下面是安装使用过程中出现的一些问题及解决方法

一．不能用root用户运程连接mysql

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为MySQL的root用户添加远程访问权限：

[root@localhost ~]# mysql -uroot -p
Enter password: （此处输入密码登录）
Welcome to the MySQL monitor. Commands end with ; or /g.
Your MySQL connection id is 35 to server version: 5.0.22

Type 'help;' or '/h' for help. Type '/c' to clear the buffer.

mysql> grant all on *.* to root@'%' identified by 'your_password';
Query OK, 0 rows affected (0.01 sec)

mysql> exit
Bye

[root@localhost ~]# /etc/init.d/mysqld restart

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二．Mysqld启动失败

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1） mysql相关进程僵死

查找mysql相关进程：sudo ps –A ｜ grep mysql

杀死相关进程：sudo kill -9 process_id

重启mysqld：sudo /etc/init.d/mysqld restart

2）优化后出现

Starting MySQL..The server quit without updating PID file ([失败]ocal/mysql/data/localhost.localdomain.pid).

这个问题主要出现的原因是因为my.cnf的配置过于高，当前的机器无法满足，导致了MYSQL启动失败，估计以后也会有很多人遇到这个问题，网上的标准是：

如果内存是128M，则复制/usr/local/share/mysql/my-medium.cnf为/etc/my.cnf

# This is for a system with little memory (32M - 64M) where MySQL plays

# an important part, or systems up to 128M where MySQL is used together with

# other programs (such as a web server)

如果内存是512M，则复制/usr/local/share/mysql/my-large.cnf为/etc/my.cnf

# This is for a large system with memory = 512M where the system runs mainly

# MySQL.

如果内存是1-2G，则复制/usr/local/share/mysql/my-huge.cnf为/etc/my.cnf

# This is for a large system with memory of 1G-2G where the system runs mainly

# MySQL.

实际上需要在my-medium.cnf的基础上进行修改，增强部分配置，不能直接使用my-large.cnf和my-huge.cnf。

除非你的服务器配置相当高。

3）./mysql-bin.index not found

权限问题修改数据目录的权限及/usr/local/mysql/bin/mysqld 的权限。

4）Error Code : 1418
This function has none of DETERMINISTIC, NO SQL, or READS SQL DATA in its declaration and binary logging is enabled (you *might* want to use the less safe log_bin_trust_function_creators variable)
(0 ms taken)

解决方法如下：

1. mysql> SET GLOBAL log_bin_trust_function_creators = 1;

2. 在my.ini(linux下为my.conf)文件中 [mysqld] 标记后加一行内容为 log-bin-trust-function-creators=1

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