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本篇内容主要给大家讲解一下如何在linux下安装MYSQL数据库,并以安装MYSQL5.6版本为例子教给大家进行登录用户名和密码的修改等操作。 源码下载地址http://dev.mysql.com/downloads/mysql/5.6.html#downloads tar.gz地址:https://dev.mysql.com/get/Downloads/MySQL-5.6/mysql-5.6.37.tar.gz 选择Generic Linux (Architecture Independent), Compressed TAR Archive 选择 No thanks, just start my download. 开始下载 操作系统: centos6.5 x86_64 一、yum安装相关依赖 # yum -y install gcc gcc-c++ gcc-g77 autoconf automake zlib* fiex* libxml* ncurses-devel libmcrypt* libtool-ltdl-devel* make cmake bison git openssl openssl-devel 二、编译安装 1.添加用户 groupadd mysql useradd -r -g mysql mysql 2.编译安装 tar xf mysql-5.6.34.tar.gz cd mysql-5.6.34 #默认情况下是安装在/usr/local/mysql # cmake编译参数可以自己调整 ************************************************************** -- Looking for asprintf -- Looking for asprintf - found -- Check size of pthread_t -- Check size of pthread_t - done -- Using cmake version 2.8.12.2 -- Not building NDB -- Performing Test HAVE_PEERCRED -- Performing Test HAVE_PEERCRED - Success -- Library mysqlclient depends on OSLIBS -lpthread;/usr/lib64/libz.so;m;rt;/usr/lib64/libssl.so;/usr/lib64/libcrypto.so;dl -- Googlemock was not found. gtest-based unit tests will be disabled. You can run cmake . -DENABLE_DOWNLOADS=1 to automatically download and build required components from source. -- If you are inside a firewall, you may need to use an http proxy: export http_proxy=http://example.com:80 -- Library mysqlserver depends on OSLIBS -lpthread;/usr/lib64/libz.so;m;rt;/usr/lib64/libssl.so;/usr/lib64/libcrypto.so;dl;crypt -- CMAKE_BUILD_TYPE: RelWithDebInfo -- COMPILE_DEFINITIONS: HAVE_CONFIG_H -- CMAKE_C_FLAGS: -Wall -Wextra -Wformat-security -Wvla -Wwrite-strings -Wdeclaration-after-statement -- CMAKE_CXX_FLAGS: -Wall -Wextra -Wformat-security -Wvla -Woverloaded-virtual -Wno-unused-parameter -- CMAKE_C_FLAGS_RELWITHDEBINFO: -O3 -g -fabi-version=2 -fno-omit-frame-pointer -fno-strict-aliasing -DDBUG_OFF -- CMAKE_CXX_FLAGS_RELWITHDEBINFO: -O3 -g -fabi-version=2 -fno-omit-frame-pointer -fno-strict-aliasing -DDBUG_OFF -- Configuring done -- Generating done CMake Warning: Manually-specified variables were not used by the project: WITH_READLINE -- Build files have been written to: /root/mysql-5.6.34 ************************************************************** rm -f CMakeCache.txt 3.make && make install 注意事项: 重新编译时,需要清除旧的对象文件和缓存信息。 # make clean # rm -f CMakeCache.txt # rm -rf /etc/my.cnf 4.改变数据存储目录所有者为mysql chown -R mysql.mysql /usr/local/mysql chown -R mysql.mysql /data/mydata 5.启动脚本初始化数据库 cd /usr/local/mysql # scripts/mysql_install_db --user=mysql --basedir=/usr/local/mysql --datadir=/data/mydata 6.注册服务 cp support-files/mysql.server /etc/rc.d/init.d/mysqld #使用默认配置文件 cp support-files/my-default.cnf /etc/my.cnf #让chkconfig管理mysql服务 chkconfig --add mysqld #开机启动 chkconfig mysqld on 编辑 vi /etc/my.cnf配置,加入以下内容 innodb_file_per_table = 1 datadir = /data/mydata log-bin=/data/binlogs/mysql-bin 注意: 经过实际测试innodb_file_per_table = ON这条参数需要innodb_file_per_table = 1 才能生效,具体可以通过 mysql> show variables like '%per_table%';来查询 mkdir /data/binlogs chown -R mysql.mysql /data/binlogs 8.将mysql命令加入环境变量中 vim /etc/profile.d/mysql.sh 加入 export PATH=/usr/local/mysql/bin:$PATH 默认密码为空 9修改 vi /etc/security/limits.conf,然后加入以下内容,退出再重新登陆即可(不需要重启,退出当前的连接shell即可) # ulimit -n 查看参数是否生效 * hard nofile 655350 * soft nofile 655350 否则报错如下: 错误#23: Out of resources when opening file './XX/USER.MYD' (Errcode: 24) 同时 vim /etc/security/limits.d/90-nproc.conf 删除如下这行接触centos对文件操作句柄的限制: * soft nproc 1024 关于mysql的启动和停止 /etc/init.d/mysqld start /etc/init.d/mysqld stop 查看mysql是否已经启动成功 ps -elf |grep mysql |grep -v grep 更改允许IP访问(进入 mysql:2.使用 mysql库:3.查看用户表 :4.更新用户表 :5.强制刷新权限 :) /usr/local/mysql/bin/mysql -u root -p use mysql; SELECT `Host`,`User` FROM user; UPDATE user SET `Host` = '%' WHERE `User` = 'root' LIMIT 1; 更改mysql数据库登录用户密码 可使用navcat客户端连接进去更改登录用户的密码 # mysql -uroot -p Enter password: 【原始安装默认密码空直接回车】 mysql>use mysql; mysql> update user set password=passworD("root") where user='root'; mysql> flush privileges; mysql> exit; 使用客户端连接测试之前一定要开放防火墙3306的连接端口 vi /etc/sysconfig/iptables 在22端口之后即可 -A INPUT -m state --state NEW -m tcp -p tcp --dport 3306 -j ACCEPT 重启防火墙即可生效 service iptables restart |
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