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
