centos65上安装mysql一 梳理了一下centos上安装mysql的三种方法:一是通过源码安装,二是用通用二进制包,三是通过不同linux release到系统包安装,centos上是RPM包安装。 先来rpm包装 0 环境 [root@host2 ~]# uname -a Linux host2 2.6.32-504.3.3.el6.x86_64
centos65上安装mysql一梳理了一下centos上安装mysql的三种方法:一是通过源码安装,二是用通用二进制包,三是通过不同linux release到系统包安装,centos上是RPM包安装。
先来rpm包装
0
环境
[root@host2 ~]# uname -a
Linux host2 2.6.32-504.3.3.el6.x86_64 #1 SMP Wed Dec 17 01:55:02 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
[root@host2 ~]# cat /etc/issue
CentOS release 6.5 (Final)
Kernel \r on an \m
1
下载
http://dev.mysql.com/downloads/
2
检查是否安装
[root@host2 ~]# rpm -qa | grep -i mysql
文件名
MySQL-5.6.22-1.linux_glibc2.5.x86_64.rpm-bundle.tar
3
删除已安装
[root@host2 ~]# rpm -e mysql-libs-5.1.71-1.el6.x86_64 --nodeps
[root@host2 ~]#
4
查验,这样删还是会留下一些东西
[root@host2 ~]# find / -name mysql
[root@host2 ~]# find / -name *mysql*
/etc/selinux/targeted/modules/active/modules/mysql.pp
/usr/lib/python2.6/site-packages/sos/plugins/mysql.pyc
/usr/lib/python2.6/site-packages/sos/plugins/mysql.pyo
/usr/lib/python2.6/site-packages/sos/plugins/mysql.py
/usr/share/vim/vim72/syntax/mysql.vim
/usr/share/selinux/devel/include/services/mysql.if
/usr/share/selinux/targeted/mysql.pp.bz2
/usr/share/doc/rsyslog-5.8.10/rsyslog_mysql.html
/usr/share/doc/rsyslog-5.8.10/ommysql.html
/usr/share/man/man5/mysql_table.5.gz
/usr/lib64/libreoffice/program/libmysqllo.so
/selinux/booleans/allow_user_mysql_connect
/selinux/booleans/mysql_connect_any
/var/lib/yum/yumdb/m/b642f65e3df41063e068158061ae2e08f22e3dad-mysql-libs-5.1.71-1.el6-x86_64
[root@host2 ~]# rpm -qa | grep -i mysql
[root@host2 ~]#
5
查验有否mysql用户和组
[root@host2 ~]# nl /etc/group | grep mysql
[root@host2 ~]# nl /etc/shadow | grep mysql
[root@host2 ~]#
6
解包
[root@host2 mysql_rpm]# tar -xvf MySQL-5.6.22-1.linux_glibc2.5.x86_64.rpm-bundle.tar
MySQL-shared-compat-5.6.22-1.linux_glibc2.5.x86_64.rpm #RHEL兼容包
MySQL-client-5.6.22-1.linux_glibc2.5.x86_64.rpm #MySQL客户端程序
MySQL-shared-5.6.22-1.linux_glibc2.5.x86_64.rpm #MySQL的共享库
MySQL-server-5.6.22-1.linux_glibc2.5.x86_64.rpm #MySQL服务端程序
MySQL-test-5.6.22-1.linux_glibc2.5.x86_64.rpm #MySQL的测试组件
MySQL-devel-5.6.22-1.linux_glibc2.5.x86_64.rpm #MySQL的库和头文件
MySQL-embedded-5.6.22-1.linux_glibc2.5.x86_64.rpm #MySQL的嵌入式程序
[root@host2 mysql_rpm]#
7
[root@host2 mysql_rpm]# rpm -ivh MySQL-server-5.6.22-1.linux_glibc2.5.x86_64.rpm
[root@host2 mysql_rpm]# rpm -ivh MySQL-server-5.6.22-1.linux_glibc2.5.x86_64.rpm
Preparing... ########################################### [100%]
1:MySQL-server ########################################### [100%]
warning: user mysql does not exist - using root
warning: group mysql does not exist - using root
2015-01-20 13:10:42 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2015-01-20 13:10:42 5645 [Note] InnoDB: Using atomics to ref count buffer pool pages
2015-01-20 13:10:42 5645 [Note] InnoDB: The InnoDB memory heap is disabled
2015-01-20 13:10:42 5645 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2015-01-20 13:10:42 5645 [Note] InnoDB: Memory barrier is not used
2015-01-20 13:10:42 5645 [Note] InnoDB: Compressed tables use zlib 1.2.3
2015-01-20 13:10:42 5645 [Note] InnoDB: Using Linux native AIO
2015-01-20 13:10:42 5645 [Note] InnoDB: Not using CPU crc32 instructions
2015-01-20 13:10:42 5645 [Note] InnoDB: Initializing buffer pool, size = 128.0M
2015-01-20 13:10:42 5645 [Note] InnoDB: Completed initialization of buffer pool
2015-01-20 13:10:42 5645 [Note] InnoDB: The first specified data file ./ibdata1 did not exist: a new database to be created!
2015-01-20 13:10:42 5645 [Note] InnoDB: Setting file ./ibdata1 size to 12 MB
2015-01-20 13:10:42 5645 [Note] InnoDB: Database physically writes the file full: wait...
2015-01-20 13:10:42 5645 [Note] InnoDB: Setting log file ./ib_logfile101 size to 48 MB
2015-01-20 13:10:42 5645 [Note] InnoDB: Setting log file ./ib_logfile1 size to 48 MB
2015-01-20 13:10:43 5645 [Note] InnoDB: Renaming log file ./ib_logfile101 to ./ib_logfile0
2015-01-20 13:10:43 5645 [Warning] InnoDB: New log files created, LSN=45781
2015-01-20 13:10:43 5645 [Note] InnoDB: Doublewrite buffer not found: creating new
2015-01-20 13:10:43 5645 [Note] InnoDB: Doublewrite buffer created
2015-01-20 13:10:43 5645 [Note] InnoDB: 128 rollback segment(s) are active.
2015-01-20 13:10:43 5645 [Warning] InnoDB: Creating foreign key constraint system tables.
2015-01-20 13:10:43 5645 [Note] InnoDB: Foreign key constraint system tables created
2015-01-20 13:10:43 5645 [Note] InnoDB: Creating tablespace and datafile system tables.
2015-01-20 13:10:43 5645 [Note] InnoDB: Tablespace and datafile system tables created.
2015-01-20 13:10:43 5645 [Note] InnoDB: Waiting for purge to start
2015-01-20 13:10:43 5645 [Note] InnoDB: 5.6.22 started; log sequence number 0
A random root password has been set. You will find it in '/root/.mysql_secret'.
2015-01-20 13:10:44 5645 [Note] Binlog end
2015-01-20 13:10:44 5645 [Note] InnoDB: FTS optimize thread exiting.
2015-01-20 13:10:44 5645 [Note] InnoDB: Starting shutdown...
2015-01-20 13:10:45 5645 [Note] InnoDB: Shutdown completed; log sequence number 1625977
2015-01-20 13:10:45 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2015-01-20 13:10:45 5667 [Note] InnoDB: Using atomics to ref count buffer pool pages
2015-01-20 13:10:45 5667 [Note] InnoDB: The InnoDB memory heap is disabled
2015-01-20 13:10:45 5667 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2015-01-20 13:10:45 5667 [Note] InnoDB: Memory barrier is not used
2015-01-20 13:10:45 5667 [Note] InnoDB: Compressed tables use zlib 1.2.3
2015-01-20 13:10:45 5667 [Note] InnoDB: Using Linux native AIO
2015-01-20 13:10:45 5667 [Note] InnoDB: Not using CPU crc32 instructions
2015-01-20 13:10:45 5667 [Note] InnoDB: Initializing buffer pool, size = 128.0M
2015-01-20 13:10:45 5667 [Note] InnoDB: Completed initialization of buffer pool
2015-01-20 13:10:45 5667 [Note] InnoDB: Highest supported file format is Barracuda.
2015-01-20 13:10:45 5667 [Note] InnoDB: 128 rollback segment(s) are active.
2015-01-20 13:10:45 5667 [Note] InnoDB: Waiting for purge to start
2015-01-20 13:10:45 5667 [Note] InnoDB: 5.6.22 started; log sequence number 1625977
2015-01-20 13:10:45 5667 [Note] Binlog end
2015-01-20 13:10:45 5667 [Note] InnoDB: FTS optimize thread exiting.
2015-01-20 13:10:45 5667 [Note] InnoDB: Starting shutdown...
2015-01-20 13:10:47 5667 [Note] InnoDB: Shutdown completed; log sequence number 1625987
A RANDOM PASSWORD HAS BEEN SET FOR THE MySQL root USER !
You will find that password in '/root/.mysql_secret'.
You must change that password on your first connect,
no other statement but 'SET PASSWORD' will be accepted.
See the manual for the semantics of the 'password expired' flag.
Also, the account for the anonymous user has been removed.
In addition, you can run:
/usr/bin/mysql_secure_installation
which will also give you the option of removing the test database.
This is strongly recommended for production servers.
See the manual for more instructions.
Please report any problems at http://bugs.mysql.com/
The latest information about MySQL is available on the web at
http://www.mysql.com
Support MySQL by buying support/licenses at http://shop.mysql.com
New default config file was created as /usr/my.cnf and
will be used by default by the server when you start it.
You may edit this file to change server settings
[root@host2 mysql_rpm]#
8
已经有了mysql用户和组
[root@host2 mysql_rpm]# id mysql
uid=495(mysql) gid=492(mysql) groups=492(mysql)
[root@host2 mysql_rpm]# nl /etc/group | grep mysql
60 mysql:x:492:
[root@host2 mysql_rpm]# cat /etc/group | grep mysql
mysql:x:492:
[root@host2 mysql_rpm]# cat /etc/shadow | grep mysql
mysql:!!:16455::::::
[root@host2 mysql_rpm]#
9
RPM安装方式文件分布
Table 2.6 MySQLInstallation Layout for Linux RPM Packages from the MySQL DeveloperZone
Directory |
Contentsof Directory |
---|---|
|
Clientprograms and scripts |
|
Themysqldserver |
|
Logfiles, databases |
|
Manualin Info format |
|
Unixmanual pages |
|
Include(header) files |
|
Libraries |
|
Miscellaneoussupport files, including error messages, character set files,sample configuration files, SQL for database installation |
|
Benchmarks |
10
copy配置文件
# 没有这一步也可以按内置参数
[root@host2 mysql_rpm]# cp /usr/share/mysql/my-default.cnf /etc/my.cnf
[root@host2 mysql_rpm]#
11
start
[root@host2 mysql_rpm]# service mysql status
MySQL is not running [FAILED]
[root@host2 mysql_rpm]# service mysql start
Starting MySQL.. [ OK ]
11
查验
[root@host2 mysql_rpm]# netstat -anpl | grep mysql
tcp 0 0 :::3306 :::* LISTEN 5924/mysqld
unix 2 [ ACC ] STREAM LISTENING 76015 5924/mysqld /var/lib/mysql/mysql.sock
[root@host2 mysql_rpm]#
12
安装客户端
[root@host2 mysql_rpm]# rpm -ivh MySQL-client-5.6.22-1.linux_glibc2.5.x86_64.rpm
Preparing... ########################################### [100%]
1:MySQL-client ########################################### [100%]
[root@host2 mysql_rpm]#
13
连到mysql并修改
[root@host2 mysql_rpm]# nl /root/.mysql_secret
1 # The random password set for the root user at Tue Jan 20 13:10:43 2015 (local time): F76Wy1A4G9ZuLcaG
[root@host2 mysql_rpm]# mysql -p mysql
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 4
Server version: 5.6.22
Copyright (c) 2000, 2014, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> show databases;
ERROR 1820 (HY000): You must SET PASSWORD before executing this statement
mysql>
mysql> SET PASSWORD = PASSWORD('123456');
Query OK, 0 rows affected (0.31 sec)
mysql> flush privileges;
mysql> \q
Bye
[root@host2 mysql_rpm]#
附:
这样安装后的文件
[root@host2 mysql_rpm]# ll /usr/bin/mysql*
-rwxr-xr-x. 1 root root 11558 Nov 21 14:26 /usr/bin/mysqlbug
-rwxr-xr-x. 1 root root 4334 Nov 21 14:26 /usr/bin/mysql_convert_table_format
-rwxr-xr-x. 1 root root 26356 Nov 21 14:26 /usr/bin/mysqld_multi
-rwxr-xr-x. 1 root root 24691 Nov 21 14:26 /usr/bin/mysqld_safe
-rwxr-xr-x. 1 root root 7424 Nov 21 14:26 /usr/bin/mysqldumpslow
-rwxr-xr-x. 1 root root 1366 Nov 21 14:26 /usr/bin/mysql_fix_extensions
-rwxr-xr-x. 1 root root 34938 Nov 21 14:26 /usr/bin/mysqlhotcopy
-rwxr-xr-x. 1 root root 34612 Nov 21 14:26 /usr/bin/mysql_install_db
-rwxr-xr-x. 1 root root 4701102 Nov 21 14:28 /usr/bin/mysql_plugin
-rwxr-xr-x. 1 root root 10106 Nov 21 14:26 /usr/bin/mysql_secure_installation
-rwxr-xr-x. 1 root root 17584 Nov 21 14:26 /usr/bin/mysql_setpermission
-rwxr-xr-x. 1 root root 8681526 Nov 21 14:28 /usr/bin/mysqltest
-rwxr-xr-x. 1 root root 4381081 Nov 21 14:26 /usr/bin/mysql_tzinfo_to_sql
-rwxr-xr-x. 1 root root 4859343 Nov 21 14:28 /usr/bin/mysql_upgrade
-rwxr-xr-x. 1 root root 3976 Nov 21 14:26 /usr/bin/mysql_zap
[root@host2 mysql_rpm]#
[root@host2 mysql_rpm]# ll /var/lib/mysql/mysql*
srwxrwxrwx. 1 mysql mysql 0 Jan 20 13:35 /var/lib/mysql/mysql.sock
/var/lib/mysql/mysql:
total 1628
-rw-------. 1 mysql mysql 8820 Jan 20 13:10 columns_priv.frm
-rw-------. 1 mysql mysql 0 Jan 20 13:10 columns_priv.MYD
-rw-------. 1 mysql mysql 4096 Jan 20 13:10 columns_priv.MYI
-rw-------. 1 mysql mysql 9582 Jan 20 13:10 db.frm
[root@host2 mysql_rpm]# ll /var/lib/mysql/
total 110624
-rw-rw----. 1 mysql mysql 56 Jan 20 13:35 auto.cnf
-rw-r-----. 1 mysql root 2021 Jan 20 13:35 host2.err
-rw-rw----. 1 mysql mysql 5 Jan 20 13:35 host2.pid
-rw-rw----. 1 mysql mysql 12582912 Jan 20 13:35 ibdata1
-rw-rw----. 1 mysql mysql 50331648 Jan 20 13:35 ib_logfile0
-rw-rw----. 1 mysql mysql 50331648 Jan 20 13:10 ib_logfile1
drwx--x--x. 2 mysql mysql 4096 Jan 20 13:10 mysql
srwxrwxrwx. 1 mysql mysql 0 Jan 20 13:35 mysql.sock
drwx------. 2 mysql mysql 4096 Jan 20 13:10 performance_schema
-rw-r--r--. 1 root root 122 Jan 20 13:10 RPM_UPGRADE_HISTORY
-rw-r--r--. 1 mysql mysql 122 Jan 20 13:10 RPM_UPGRADE_MARKER-LAST
drwxr-xr-x. 2 mysql mysql 4096 Jan 20 13:10 test
[root@host2 mysql_rpm]#
[root@host2 mysql_rpm]# ll /usr/share/
drwxr-xr-x. 28 root root 4096 Jan 20 13:10 mysql
[root@host2 mysql_rpm]# ll /usr/share/mysql/
total 1504
-rwxr-xr-x. 1 root root 1153 Nov 21 14:26 binary-configure
drwxr-xr-x. 2 root root 4096 Jan 20 13:10 bulgarian
drwxr-xr-x. 2 root root 4096 Jan 20 13:10 charsets
drwxr-xr-x. 2 root root 4096 Jan 20 13:10 czech
drwxr-xr-x. 2 root root 4096 Jan 20 13:10 danish
-rwxr-xr-x. 1 root root 25575 Nov 21 13:39 dictionary.txt
drwxr-xr-x. 2 root root 4096 Jan 20 13:10 dutch
drwxr-xr-x. 2 root root 4096 Jan 20 13:10 english
-rwxr-xr-x. 1 root root 505241 Nov 21 13:39 errmsg-utf8.txt
drwxr-xr-x. 2 root root 4096 Jan 20 13:10 estonian
-rwxr-xr-x. 1 root root 742787 Nov 21 13:40 fill_help_tables.sql
drwxr-xr-x. 2 root root 4096 Jan 20 13:10 french
drwxr-xr-x. 2 root root 4096 Jan 20 13:10 german
drwxr-xr-x. 2 root root 4096 Jan 20 13:10 greek
drwxr-xr-x. 2 root root 4096 Jan 20 13:10 hungarian
-rwxr-xr-x. 1 root root 3963 Nov 21 13:39 innodb_memcached_config.sql
drwxr-xr-x. 2 root root 4096 Jan 20 13:10 italian
drwxr-xr-x. 2 root root 4096 Jan 20 13:10 japanese
drwxr-xr-x. 2 root root 4096 Jan 20 13:10 korean
-rwxr-xr-x. 1 root root 773 Nov 21 13:39 magic
-rwxr-xr-x. 1 root root 1126 Nov 21 14:26 my-default.cnf
-rwxr-xr-x. 1 root root 1061 Nov 21 14:26 mysqld_multi.server
-rwxr-xr-x. 1 root root 844 Nov 21 14:26 mysql-log-rotate
-rwxr-xr-x. 1 root root 1695 Nov 21 13:39 mysql_security_commands.sql
-rwxr-xr-x. 1 root root 10815 Nov 21 14:26 mysql.server
-rwxr-xr-x. 1 root root 3464 Nov 21 13:39 mysql_system_tables_data.sql
-rwxr-xr-x. 1 root root 93220 Nov 21 13:39 mysql_system_tables.sql
-rwxr-xr-x. 1 root root 10410 Nov 21 13:39 mysql_test_data_timezone.sql
drwxr-xr-x. 2 root root 4096 Jan 20 13:10 norwegian
drwxr-xr-x. 2 root root 4096 Jan 20 13:10 norwegian-ny
drwxr-xr-x. 2 root root 4096 Jan 20 13:10 polish
drwxr-xr-x. 2 root root 4096 Jan 20 13:10 portuguese
drwxr-xr-x. 2 root root 4096 Jan 20 13:10 romanian
drwxr-xr-x. 2 root root 4096 Jan 20 13:10 russian
drwxr-xr-x. 3 root root 4096 Jan 20 13:10 SELinux
drwxr-xr-x. 2 root root 4096 Jan 20 13:10 serbian
drwxr-xr-x. 2 root root 4096 Jan 20 13:10 slovak
drwxr-xr-x. 2 root root 4096 Jan 20 13:10 spanish
drwxr-xr-x. 2 root root 4096 Jan 20 13:10 swedish
drwxr-xr-x. 2 root root 4096 Jan 20 13:10 ukrainian
[root@host2 mysql_rpm]#
http://dev.mysql.com/doc/refman/5.6/en/linux-installation-rpm.html
-----------------
blog.csdn.net/beiigang

在數據庫優化中,應根據查詢需求選擇索引策略:1.當查詢涉及多個列且條件順序固定時,使用複合索引;2.當查詢涉及多個列但條件順序不固定時,使用多個單列索引。複合索引適用於優化多列查詢,單列索引則適合單列查詢。

要優化MySQL慢查詢,需使用slowquerylog和performance_schema:1.啟用slowquerylog並設置閾值,記錄慢查詢;2.利用performance_schema分析查詢執行細節,找出性能瓶頸並優化。

MySQL和SQL是開發者必備技能。 1.MySQL是開源的關係型數據庫管理系統,SQL是用於管理和操作數據庫的標準語言。 2.MySQL通過高效的數據存儲和檢索功能支持多種存儲引擎,SQL通過簡單語句完成複雜數據操作。 3.使用示例包括基本查詢和高級查詢,如按條件過濾和排序。 4.常見錯誤包括語法錯誤和性能問題,可通過檢查SQL語句和使用EXPLAIN命令優化。 5.性能優化技巧包括使用索引、避免全表掃描、優化JOIN操作和提升代碼可讀性。

MySQL異步主從復制通過binlog實現數據同步,提升讀性能和高可用性。 1)主服務器記錄變更到binlog;2)從服務器通過I/O線程讀取binlog;3)從服務器的SQL線程應用binlog同步數據。

MySQL是一個開源的關係型數據庫管理系統。 1)創建數據庫和表:使用CREATEDATABASE和CREATETABLE命令。 2)基本操作:INSERT、UPDATE、DELETE和SELECT。 3)高級操作:JOIN、子查詢和事務處理。 4)調試技巧:檢查語法、數據類型和權限。 5)優化建議:使用索引、避免SELECT*和使用事務。

MySQL的安裝和基本操作包括:1.下載並安裝MySQL,設置根用戶密碼;2.使用SQL命令創建數據庫和表,如CREATEDATABASE和CREATETABLE;3.執行CRUD操作,使用INSERT,SELECT,UPDATE,DELETE命令;4.創建索引和存儲過程以優化性能和實現複雜邏輯。通過這些步驟,你可以從零開始構建和管理MySQL數據庫。

InnoDBBufferPool通過將數據和索引頁加載到內存中來提升MySQL數據庫的性能。 1)數據頁加載到BufferPool中,減少磁盤I/O。 2)臟頁被標記並定期刷新到磁盤。 3)LRU算法管理數據頁淘汰。 4)預讀機制提前加載可能需要的數據頁。

MySQL適合初學者使用,因為它安裝簡單、功能強大且易於管理數據。 1.安裝和配置簡單,適用於多種操作系統。 2.支持基本操作如創建數據庫和表、插入、查詢、更新和刪除數據。 3.提供高級功能如JOIN操作和子查詢。 4.可以通過索引、查詢優化和分錶分區來提升性能。 5.支持備份、恢復和安全措施,確保數據的安全和一致性。


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