MySQL报错总结

报错原因：/application/mysql-5.6.44/tmp不存在

解决方法：mkdir /application/mysql-5.6.44/tmp

报错原因： /application/mysql-5.6.44/存放socket 目录没有权限

解决方法：chown -R mysql.mysql /application/mysql-5.6.44/

报错原因：mysql库中的user表找不到

解决方法：初始化MySQL数据库

报错1

FATAL ERROR: please install the following Perl modules before executing ./mysql_install_db:

Data::Dumper

原因

[root@db02 scripts]# yum install-y autoconf

即可

[root@db01 scripts]# /etc/init.d/mysqld start

Starting MySQL.. ERROR! The server quit without updating PID file (/application/mysql-5.6.44/data/db01.pid).

解决：

yum install -y libaio-devel

yum install -y perl-devel

报错2

CMake Error at cmake/readline.cmake:85 (MESSAGE):

Curses library not found. Please install appropriate package,

remove CMakeCache.txt and rerun cmake.On Debian/Ubuntu, package name is libncurses5-dev, on Redhat and derivates it is ncurses-devel.

Call Stack (most recent call first):

cmake/readline.cmake:128 (FIND_CURSES)

cmake/readline.cmake:218 (MYSQL_USE_BUNDLED_EDITLINE)

CMakeLists.txt:454 (MYSQL_CHECK_EDITLINE)

-- Configuring incomplete, errors occurred!

See also "/root/mysql-5.6.44/CMakeFiles/CMakeOutput.log".

See also "/root/mysql-5.6.44/CMakeFiles/CMakeError.log".

解决

1. yum install -y ncurses-devel

2. rm -rf CMakeCache.txt

3. 再次执行一下

[root@db03 mysql-5.6.44]# echo $?

0

代表就可以了

报错3

解决

问题，就是编译安装好后，输入mysql 报-bash: mysql: command not found

原因没有添加变量

[root@db01 scripts]# vim /etc/profile.d/mysql.sh

export PATH="/opt/mysql/bin:$PATH"

#加载环境变量

[root@db01 scripts]# source /etc/profile

#查看所有的环境变量

[root@db01 scripts]# echo $PATH

/opt/mysql/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin

#检查端口

[root@db01 scripts]# netstat -lntup

tcp6 0 0 :::3306 :::* LISTEN 34209/mysqld

报错4

原因：

没有安装依赖libaio-deve

yum install -y libaio-deve 即可

报错5

解决

1.回到 cd mysql-5.6.44

2.然后把rm -rf CMakeCache.txt

3.cmake . -DCMAKE_INSTALL_PREFIX=/opt/mysql-5.6.44 -DMYSQL_DATADIR=/opt/mysql-5.6.44/data -DMYSQL_UNIX_ADDR=/opt/mysql-5.6.44/tmp/mysql.sock -DDEFAULT_CHARSET=utf8 -DDEFAULT_COLLATION=utf8_general_ci -DWITH_EXTRA_CHARSETS=all -DWITH_INNOBASE_STORAGE_ENGINE=1 -DWITH_FEDERATED_STORAGE_ENGINE=1 -DWITH_BLACKHOLE_STORAGE_ENGINE=1 -DWITHOUT_EXAMPLE_STORAGE_ENGINE=1 -DWITH_ZLIB=bundled -DWITH_SSL=bundled -DENABLED_LOCAL_INFILE=1 -DWITH_EMBEDDED_SERVER=1 -DENABLE_DOWNLOADS=1 -DWITH_DEBUG=0

4.make

5.make install

6.cp mysql.server /etc/init.d/mysqld

7.cp my-default.cnf /etc/my.cnf

8. mkdir /opt/mysql-5.6.44/tmp

8.ln -s /opt/mysql-5.6.44 /opt/mysql

9. chown -R mysql.mysql /opt/*

10. cd /opt/mysql-5.6.44/scripts

11. yum install -y autoconf

12./mysql_install_db --user=mysql --basedir=/opt/mysql --datadir=/opt/mysql/data

13. echo $?

返回0 就可以了

14. /etc/init.d/mysqld start

报错6

启动多实例3309的时候发现3309 起不来，

原因是内存不够，要加到2G或以上