fedora 16 yum安装mysql后怎样启动,以及添加为系统服务_MySQL
Fedora
bitsCN.comfedora 16 yum安装mysql后怎样启动,以及添加为系统服务
1 yum 安装mysql
#yum install mysql mysql-server mysql-devel
如果遇到 ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var
可以使用下面的命令:
启动mysql服务
#systemctl start mysqld.service
设置mysqld为开机自启动
#systemctl enable mysqld.service
2、systemctl的用法
该命令为系统进程管理命令; 对比表,以apache / httpd 为例
任务 旧指令 新指令
使某服务自动启动 chkconfig --level 3 httpd on systemctl enable httpd.service
使某服务不自动启动 chkconfig --level 3 httpd off systemctl disable httpd.service
检查服务状态 service httpd status systemctl status httpd.service(服务详细信息) systemctl is-active httpd.service (仅显示是否 Active)
显示所有已启动的服务 chkconfig --list systemctl list-units --type=service
启动某服务 service httpd start systemctl start httpd.service
停止某服务 service httpd stop systemctl stop httpd.service
重启某服务 service httpd restart systemctl restart httpd.service
3、 安装后可以这样查看mysql的相应命令的安装位置
查找mysql服务器文件的安装位置
#rpm -ql mysql-server
查找mysql客户端文件的安装位置
#rpm -ql mysql
4、系统默认没有安装mysql管理数据库,运行安装命令
#mysql_install_db
或者加上参数
#mysql_install_db --user=root --basedir=/usr --datadir=/var/lib/mysql
安装完mysql管理数据库后,可以启动mysql了,可以这样查看相应的basedir和datadir的值。
启动mysql
#mysqld_safe --user=root &
查找mysqld的进程号
#ps aux|grep mysqld
结束mysqld,进程号由上面的命令得到,注意是 /usr/bin/mysqld 的进程号,而不是 /bin/sh /usr/bin/mysqld_safe 的进程号。
#kill 35431
5、下载一个mysql的Linux二进制压缩安装包(版本号差不多就行,比如都是5.5.xx)中的support-files/mysql.server文件,修改其中的两行。
basedir=/usr
datadir=/var/lib/mysql
搜索'start'段,在 $bindir/mysqld_safe --datadir="$datadir" 修改为 $bindir/mysqld_safe --user=root --datadir="$datadir" 。
然后
#cp mysql.server /etc/rc.d/init.d/mysqld
#chmod +x /etc/rc.d/init.d/mysqld
至此,mysql就成功注册为服务了,可以使用 #service mysqld start|stop|restrat 命令来运行mysql了。
启动mysql
#service mysqld start
给mysql的root用户添加密码123
#mysqladmin -u root password 123
使用mysql命令行客户端
#mysql -u root -p 123
6、 启动 mysqld.service 出现无法启动的问题
用service mysqld start启动服务时,出现如下错误:
Redirecting to /bin/systemctl start mysqld.service
Failed to issue method call: Access denied
用systemctl start mysql.service时,出现如下错误:
Failed to issue method call: Unit mysql.service failed to load: No such file or directory. See system logs and 'systemctl status mysql.service' for details.
直接输入mysql出现如下错误:
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
解决方法:mysql的拥有者是root,而mysql是用mysql用户身份执行当然写不进去了,是系统权限的问题,chown -R mysql:mysql /var/lib/mysql/ 就可以了

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics



MySQL is an open source relational database management system. 1) Create database and tables: Use the CREATEDATABASE and CREATETABLE commands. 2) Basic operations: INSERT, UPDATE, DELETE and SELECT. 3) Advanced operations: JOIN, subquery and transaction processing. 4) Debugging skills: Check syntax, data type and permissions. 5) Optimization suggestions: Use indexes, avoid SELECT* and use transactions.

You can open phpMyAdmin through the following steps: 1. Log in to the website control panel; 2. Find and click the phpMyAdmin icon; 3. Enter MySQL credentials; 4. Click "Login".

MySQL is an open source relational database management system, mainly used to store and retrieve data quickly and reliably. Its working principle includes client requests, query resolution, execution of queries and return results. Examples of usage include creating tables, inserting and querying data, and advanced features such as JOIN operations. Common errors involve SQL syntax, data types, and permissions, and optimization suggestions include the use of indexes, optimized queries, and partitioning of tables.

MySQL is chosen for its performance, reliability, ease of use, and community support. 1.MySQL provides efficient data storage and retrieval functions, supporting multiple data types and advanced query operations. 2. Adopt client-server architecture and multiple storage engines to support transaction and query optimization. 3. Easy to use, supports a variety of operating systems and programming languages. 4. Have strong community support and provide rich resources and solutions.

Redis uses a single threaded architecture to provide high performance, simplicity, and consistency. It utilizes I/O multiplexing, event loops, non-blocking I/O, and shared memory to improve concurrency, but with limitations of concurrency limitations, single point of failure, and unsuitable for write-intensive workloads.

MySQL and SQL are essential skills for developers. 1.MySQL is an open source relational database management system, and SQL is the standard language used to manage and operate databases. 2.MySQL supports multiple storage engines through efficient data storage and retrieval functions, and SQL completes complex data operations through simple statements. 3. Examples of usage include basic queries and advanced queries, such as filtering and sorting by condition. 4. Common errors include syntax errors and performance issues, which can be optimized by checking SQL statements and using EXPLAIN commands. 5. Performance optimization techniques include using indexes, avoiding full table scanning, optimizing JOIN operations and improving code readability.

MySQL's position in databases and programming is very important. It is an open source relational database management system that is widely used in various application scenarios. 1) MySQL provides efficient data storage, organization and retrieval functions, supporting Web, mobile and enterprise-level systems. 2) It uses a client-server architecture, supports multiple storage engines and index optimization. 3) Basic usages include creating tables and inserting data, and advanced usages involve multi-table JOINs and complex queries. 4) Frequently asked questions such as SQL syntax errors and performance issues can be debugged through the EXPLAIN command and slow query log. 5) Performance optimization methods include rational use of indexes, optimized query and use of caches. Best practices include using transactions and PreparedStatemen

Effective monitoring of Redis databases is critical to maintaining optimal performance, identifying potential bottlenecks, and ensuring overall system reliability. Redis Exporter Service is a powerful utility designed to monitor Redis databases using Prometheus. This tutorial will guide you through the complete setup and configuration of Redis Exporter Service, ensuring you seamlessly build monitoring solutions. By studying this tutorial, you will achieve fully operational monitoring settings
