Linux(CentOS7)安装MySQL-5.7(二)【已验证安装MySQL5.7不需要cmake】

数据库 waitig 592℃ 百度已收录 0评论

1. 从官网下载mysql-5.7.14-linux-glibc2.5-x86_64.tar.gz  官网:
http://dev.mysql.com/downloads/mysql/

# wget -c
http://cdn.mysql.com//Downloads/MySQL-5.7/mysql-5.7.14-linux-glibc2.5-x86_64.tar.gz
2. 创建mysql的用户组/用户, data目录及其用户目录
# groupadd mysql# useradd -r -g mysql mysql# mkdir -p /data/mysqldb
3. 解压安装包并将解压包里的内容拷贝到mysql的安装目录/home/mysql
# tar -xzvf mysql-5.7.14-linux-glibc2.5-x86_64.tar.gz# cd mysql-5.7.14-linux-glibc2.5-x86_64
# mv * /usr/local/mysql
# mkdir -p /usr/local/mysql 创建mysql安装目录,可以把解压的mysql-5.7.14-linux-glibc2.5-x86_64文件夹下的文件移到目录下
4. 初始化mysql数据库

  1. # cd /usr/local/mysql
  2. # ./bin/mysql_install_db –user=mysql –basedir=/usr/local/mysql –datadir=/data/mysqldb
  3. 2015-11-1002:09:17 [WARNING] mysql_install_db is deprecated. Please consider switching to mysqld –initialize
  4. 2015-11-1002:09:23 [WARNING] The bootstrap logisn’t empty:
  5. 2015-11-1002:09:23 [WARNING] 2015-11-10T10:09:18.114182Z 0 [Warning] –bootstrap is deprecated. Please consider using –initialize instead
  6. 2015-11-10T10:09:18.129343Z 0 [Warning] Changed limits: max_open_files: 1024 (requested 5000)
  7. 2015-11-10T10:09:18.129408Z 0 [Warning] Changed limits: table_open_cache: 431 (requested 2000)

p.s. : mysql5.7新特性:由上面可以看出,
mysql_install_db 已经不再推荐使用了,建议改成
mysqld –initialize 完成实例初始化。
# ./bin/mysqld –user=mysql –basedir=/usr/local/mysql –datadir=/data/mysqldb –initialize
改用
mysqld –initialize
后,如果 datadir 指向的目标目录下已经有数据文件, 会出现如下提示:
# ./bin/mysqld –user=mysql –basedir=/usr/local/mysql –datadir=/data/mysqldb –initialize
2016-04-08T01:46:53.153530Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use –explicit_defaults_for_timestamp server option (see documentation
for more details).

2016-04-08T01:46:53.155856Z 0 [ERROR] –initialize specified but the data directory has files in it. Aborting.
2016-04-08T01:46:53.155879Z 0 [ERROR] Aborting
由上可知, 我们需要清空mysql的data目录, 执行清空命令如下:
# cd /data/mysqldb# rm -fr *
然后重新执行初始化命令如下:
    cd /usr/local/mysql

  • # ./bin/mysqld –user=mysql –basedir=/usr/local/mysql –datadir=/data/mysqldb –initialize
  • 2016-04-08T01:47:57.556677Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use –explicit_defaults_for_timestamp server option (see documentation for more details).
  • 2016-04-08T01:47:59.945537Z 0 [Warning] InnoDB: New logfiles created, LSN=45790
  • 2016-04-08T01:48:00.333528Z 0 [Warning] InnoDB: Creating foreign key constraint system tables.
  • 2016-04-08T01:48:00.434908Z 0 [Warning] No existing UUID has been found, so we assume that this is thefirsttime that this server has been started. Generating anew UUID: ece26421-fd2b-11e5-a1e3-00163e001e5c.
  • 2016-04-08T01:48:00.440125Z 0 [Warning] Gtid table is not ready to be used. Table ‘mysql.gtid_executed’ cannot be opened.
  • 2016-04-08T01:48:00.440904Z 1 [Note] A temporary password is generated for root@localhost: **mjT,#x_5sW

牢记上面的随机密码, 如上**mjT,#x_5sW, 下面我们修改密码时需要用到。
5. 检测下是否能启动mysql服务
# cd /usr/local/mysql# ./support-files/mysql.server start
Starting MySQL. ERROR! The server quit without updating PID file (/usr/local/mysql/data/localhost.localdomain.pid). #没有经过cmake编辑过的,初始化数据库会失败;
解决办法:vim support-files/mysql.server 指定datadir=/data/mysqldb basedir=/usr/local/mysql
Starting MySQL.. SUCCESS!

若改用了/usr/local/mysql为mysql的安装目录basedir, 则在启动服务时会出现如下错误:

  • #./support-files/mysql.server start
  • ./support-files/mysql.server: line 276: cd: /usr/local/mysql: No such fileor directory
  • Starting MySQL ERROR! Couldn’t find MySQL server (/usr/local/mysql/bin/mysqld_safe)

由上面可知mysql的tar.gz安装包的默认安装目录为/usr/local/mysql, 这时候我们需要修改/support-files/mysql.server文件的basedir和datadir目录路径为我们环境所在的mysql的basedir和datadir路径,
如下:

  • # vim support-files/mysql.server
  • ————————–
  • basedir=/usr/local/mysql
  • datadir=/data/mysqldb
  • ————————–
  • # ./support-files/mysql.server start
  • Starting MySQL.. SUCCESS!

6. 创建软链接
# ln -s /usr/local/mysql/bin/mysql /usr/bin/mysql
7. 创建配置文件
将默认生成的my.cnf备份
# mv /etc/my.cnf /etc/my.cnf.bak
进入mysql的安装目录支持文件目录
# cd /usr/local/mysql/support-files
拷贝配置文件模板为新的mysql配置文件,
# cp my-default.cnf /etc/my.cnf
可按需修改新的配置文件选项, 不修改配置选项, mysql则按默认配置参数运行.
如下是我修改配置文件/etc/my.cnf, 设置编码为utf8以防乱码
# vim /etc/my.cnf[mysqld]basedir = /usr/local/mysqldatadir = /data/mysqldbcharacter_set_server=utf8init_connect=’SET NAMES utf8′[client]default-character-set=utf8
8. 配置mysql服务开机自动启动
拷贝启动文件到/etc/init.d/下并重命令为mysqld
# cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld
增加执行权限
# chmod 755 /etc/init.d/mysqld
检查自启动项列表中没有mysqld这个,如果没有就添加mysqld
# chkconfig –list mysqld# chkconfig –add mysqld
设置MySQL在345等级自动启动
# chkconfig –level 345 mysqld on
或用这个命令设置开机启动:
# chkconfig mysqld on
9. mysql服务的启动/重启/停止
启动mysql服务
# service mysqld start
重启mysql服务
# service mysqld restart
停止mysql服务
# service mysqld stop
可以先将文件最底部这句删除或注释掉:sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
10. 初始化mysql用户root的密码
先将mysql服务停止
# service mysqld stop
进入mysql安装目录, 执行:
# cd /usr/local/mysql# ./bin/mysqld_safe –skip-grant-tables –skip-networking&[1] 6225[root@localhost mysql]# 151110 02:46:08 mysqld_safe Logging to ‘/data/mysqldb/localhost.localdomain.err’.151110
02:46:08 mysqld_safe Starting mysqld daemon with databases from /data/mysqldb

另外打开一个终端(p.s. 如果是ssh连接登录的, 另外创建一个ssh连接即可), 执行操作如下:
# mysql -u root mysql
#运行此句时,需要先执行上一句:./bin/mysqld_safe
Reading table information for completion of table and column namesYou can turn off this feature to get a quicker startup with -A********************************************************************Type
‘help;’ or ‘\h’ for help. Type ‘\c’ to clear the current input statement.

mysql> use mysql;Database changedmysql>
UPDATE user SET password=PASSWORD(‘root’) WHERE user=’root’;ERROR 1054 (42S22): Unknown column ‘password’ in ‘field list’
mysql> update user set authentication_string
= PASSWORD(‘root’) where user = ‘root’;Query OK, 1 row affected, 1 warning (0.02 sec)Rows matched: 1 Changed: 1 Warnings: 1
#MySQL5.7新特性,Users表中没有password字段了,authentication_string
就是password

mysql> flush privileges;Query OK, 0 rows affected (0.00
sec)mysql> \s————–mysql Ver 14.14 Distrib 5.7.9, for linux-glibc2.5 (x86_64) using EditLine wrapperConnection id: 2Current database: mysqlCurrent user: root@SSL: Not in useCurrent pager: stdoutUsing outfile: ”Using delimiter: ;Server version: 5.7.9
MySQL Community Server (GPL)Protocol version: 10Connection: Localhost via UNIX socketServer characterset: utf8Db characterset: utf8Client characterset: utf8Conn. characterset: utf8UNIX socket: /tmp/mysql.sockUptime: 4 min 47 secThreads: 1 Questions: 43 Slow
queries: 0 Opens: 127 Flush tables: 1 Open tables: 122 Queries per second avg: 0.149————–mysql> exit;Bye

到此, 设置完mysql用户root的密码且确保mysql编码集是utf8, 注意上面,
新版本的mysql.user表里的密码字段是authentication_string
快捷键ctrl + c停止# ./bin/mysqld_safe …命令, 重新启动mysql服务, 用新密码连接mysql:
# service mysqld startStarting MySQL SUCCESS! [root@localhost bin]# mysql -uroot -pEnter password: Welcome to the MySQL monitor. Commands end with ; or \g.Your
MySQL connection id is 3Server version: 5.7.9************************************************************************Type ‘help;’ or ‘\h’ for help. Type ‘\c’ to clear the current input statement.mysql> use mysql;ERROR 1820 (HY000): You must reset your password
using ALTER USER statement before executing this statement.mysql > exit;Bye

咦?又要我改密码, 我们通过mysqladmin来修改密码, 先输入原密码是上面步骤修改的新密码root, 再设置新密码!!!
# cd /usr/local/mysql# ./bin/mysqladmin -u root -p password
#这个password是参数,不是要设置成root密码的值Enter password: New password: Confirm new password: Warning: Since password will be sent to server in plain text, use ssl connection
to ensure password safety.# mysql -uroot -pEnter password: Welcome to the MySQL monitor. Commands end with ; or \g.Your MySQL connection id is 6Server version: 5.7.9 MySQL Community Server (GPL)Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights
reserved.******************************************************************************Type ‘help;’ or ‘\h’ for help. Type ‘\c’ to clear the current input statement.mysql> use mysql;Reading table information for completion of table and column namesYou can
turn off this feature to get a quicker startup with -ADatabase changedmysql>

或直接:
# ./bin/mysqladmin -uroot -p’g!#l4:6+rMnT’ password ‘root’
mysqladmin: [Warning] Using a password on the command line interface can be insecure.Warning: Since password will be sent to server in plain
text, use ssl connection to ensure password safety.

其中,g!#l4:6+rMnT就是我们在使用mysqld
–initialize
时牢记下的随机密码
11. mysql远程授权
格式如下:
mysql> grant all [privileges] on db_name.table_name to ‘username’@’host’ identified by ‘yourpassword’;
示例如下:
mysql> grant all privileges on *.* to ‘root’@’%’ identified by ‘root‘;Query
OK, 0 rows affected, 1 warning (0.04 sec)mysql>
FLUSH PRIVILEGES;Query OK, 0 rows affected (0.00 sec)
或用
mysql> grant all on *.* to ‘root’@’%’ identified by ‘root‘;到此,
完成了mysql的安装 及配置!!!
注:最后windows远程访问linux-mysql连接失败,没有开放端口3306:解决:iptables -I INPUT -p tcp –dport 3306 -j ACCEPT


本文由【waitig】发表在等英博客
本文固定链接:Linux(CentOS7)安装MySQL-5.7(二)【已验证安装MySQL5.7不需要cmake】
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