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第 8 章 MySQL Server

目錄

8.1. MySQL Installation
8.1.1. Installation by apt-get under debian/ubuntu
8.1.2. Installation by source code
8.1.3. MySQL binary distribution
8.1.4. mysql-5.5.21-debian6.0-i686.deb
8.1.5. CentOS 6.2 + MySQL 5.5.25 (RPM)
8.1.6. mysql-admin
8.1.7. Installing MySQL on Linux Using the MySQL Yum Repository
8.1.7.1. MySQL 5.6
8.1.7.2. MySQL 5.7
8.1.8. Firewall
8.1.9. Limit 狀態
8.1.10. 使用 Btrfs 檔案系統存儲mysql數據
8.2. MariaDB
8.2.1. CentOS YUM 安裝 MariaDB
8.2.2. MariaDB Audit Plugin
8.3. Percona
8.3.1. Percona yum Repository
8.3.2. Percona XtraBackup
8.3.2.1. 安裝 XtraBackup
8.3.2.2. innobackupex
8.3.2.3. xbstream
8.3.2.4. xtrabackup
8.3.3. Percona Toolkit - MySQL Management Software
8.4. my.cnf
8.4.1. bind-address
8.4.2. 禁用TCP/IP連結
8.4.3. 配置字符集
8.4.4. 最大連結數 max_connections
8.4.5. 預設引擎 storage-engine
8.4.6. max_allowed_packet
8.4.7. skip-name-resolve
8.4.8. timeout
8.4.9. 與複製有關的參數
8.4.9.1. 用於主庫的選項 Master
8.4.9.2. 用於從庫的選項 Slave
8.4.9.3. 逃過錯誤
8.4.10. 與 InnoDB 有關的配置項
8.4.11. EVENT 設置
8.4.12. 日誌
8.4.13. MySQL 5.7 my.cnf 實例
8.4.14. Example for my.cnf
8.5. SHOW COMMAND
8.5.1. 查看版本
8.5.2. status
8.5.2.1. show status
8.5.2.2. show master status
8.5.2.3. show slave status
8.5.2.4. show plugins
8.5.3. show processlist
8.5.4. variables
8.5.4.1. sql_mode
8.5.4.2. wait_timeout
8.5.4.3. table_lock_wait_timeout
8.5.4.4. low_priority_updates
8.5.4.5. character_set
8.5.4.6. datadir
8.5.4.7. plugin_dir
8.5.4.8. storage_engine
8.5.4.9. timeout
8.5.4.10. max_connections
8.5.5. binary 日誌
8.5.6. DATABASES
8.5.7. TABLE
8.5.8. FUNCTION
8.5.9. PROCEDURE
8.5.10. TRIGGERS
8.5.11. EVENTS
8.5.12. 引擎(ENGINES)
8.5.13. 字符集(Collation)
8.5.14. SHOW GRANTS
8.6. MySQL Plugin
8.6.1. validate_password
8.6.2. MySQL Images manager
8.6.3. MySQL fifo
8.7. Replication
8.7.1. Master Slave
8.7.1.1. Master
8.7.1.2. Slave
8.7.1.3. Testing
8.7.1.4. 將現有資料庫遷移到主從結構資料庫
8.7.1.5. 主從複製安全問題
8.7.2. Master Master(主主)
8.7.2.1. Master A
8.7.2.2. Master B
8.7.2.3. 將Master A 資料庫 同步到 Master B 兩端資料庫內容保持一致
8.7.2.4. Master A - B 同步兩端資料庫
8.7.2.5. Master A 資料庫解除只讀權限
8.7.2.6. 查看主主的工作狀態
8.7.3. Semisynchronous Replication
8.7.3.1. Master
8.7.3.2. Slave 配置
8.7.3.3. 卸載插件
8.7.3.4. my.cnf
8.7.4. multi-master replication
8.7.5. multi-source replication
8.7.6. 與複製有關的問題
8.7.6.1. 主從不同步問題
8.7.6.2. mysql-bin 清理問題
8.7.6.3. 跳過 Last_Errno
8.7.6.4. 重置Slave
8.7.7. GTID
8.7.7.1. Master
8.7.7.2. Slave
8.8. MySQL Custer
8.8.1. Management node (MGM node)
8.8.2. Data node
8.8.3. SQL node
8.8.4. Starting
8.8.5. Shutdown
8.8.6. Testing
8.9. MySQL Proxy
8.9.1. Ubuntu
8.9.2. CentOS
8.9.2.1. FAQ
8.10. MySQL Router
8.10.1. 安裝 MySQL Router
8.10.2. 配置 MySQL Router
8.10.2.1. 主備配置
8.10.2.2. 負載均衡配置
8.10.3. MySQL Router , Haproxy,LVS 的選擇
8.11. Monitoring
8.11.1. Analysis and Optimization
8.11.1.1. mytop - top like query monitor for MySQL
8.11.1.2. mtop - MySQL terminal based query monitor
8.11.1.3. innotop
8.11.1.4. mysqlreport - A friendly report of important MySQL status values
8.11.1.5. mysqltuner - MySQL configuration assistant
8.11.2. Munin
8.11.3. Cacti
8.11.4. Monitoring MySQL with SNMP

8.1. MySQL Installation

http://downloads.mysql.com/archives.php

8.1.1. Installation by apt-get under debian/ubuntu

安裝環境 ubuntu 8.10

sudo apt-get install mysql-server
		

New password for the MySQL "root" user

		
         ┌──────────────────────┤ Configuring mysql-server-5.0 ├─────────────────────┐
         │ While not mandatory, it is highly recommended that you set a password for the MySQL administrative "root" user.  │
         │                                                                                                                  │
         │ If that field is left blank, the password will not be changed.                                                   │
         │                                                                                                                  │
         │ New password for the MySQL "root" user:                                                                          │
         │                                                                                                                  │
         │ ****____________________________________________________________________________________________________________ │
         │                                                                                                                  │
         │                                                      <Ok>                                                        │
         │                                                                                                                  │
         └─────────────────────────────────────────────────────────────┘
		
		

Repeat password for the MySQL "root" user

		
         ┌───┤ Configuring mysql-server-5.0 ├────┐
         │                                             │
         │                                             │
         │ Repeat password for the MySQL "root" user:  │
         │                                             │
         │ ****_______________________________________ │
         │                                             │
         │                   <Ok>                      │
         │                                             │
         └─────────────────────────┘
         
		

create database

		
create database example;

mysql> SHOW GRANTS;
+----------------------------------------------------------------------------------------------------------------------------------------+
| Grants for root@localhost                                                                                                              |
+----------------------------------------------------------------------------------------------------------------------------------------+
| GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' IDENTIFIED BY PASSWORD '*C6325DAF39AE6CC34E960D3C65F1398FE467E1D0' WITH GRANT OPTION |
+----------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)

GRANT ALL PRIVILEGES ON example.* TO 'dbuser'@'localhost' IDENTIFIED BY '******' WITH GRANT OPTION;
FLUSH PRIVILEGES;

./mysql -udbuser -p
Enter password:

./mysql -udbuser -p example < /tmp/example_china_copy.sql

./mysql -uroot
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 6
Server version: 5.0.45 Source distribution

Type 'help;' or '\h' for help. Type '\c' to clear the buffer.

mysql> use example;
Database changed
mysql> show tables;
		
		

配置檔案樣本

debian:~# ls /usr/share/doc/mysql-server-5.0/examples/
my-huge.cnf.gz  my-innodb-heavy-4G.cnf.gz  my-large.cnf.gz  my-medium.cnf.gz  my-small.cnf  ndb_mgmd.cnf
		

8.1.2. Installation by source code

		
./configure \
--prefix=/usr/local/$MYSQL_DIR \
--enable-assembler \
--enable-local-infile \
--with-charset=utf8 \
--with-collation=utf8_general_ci \
--with-extra-charsets=none \
--with-openssl \
--with-pthread \
--with-unix-socket-path=/var/lib/mysql/mysql.sock \
--with-mysqld-user=mysql \
--with-mysqld-ldflags \
--with-client-ldflags \
--with-comment \
--with-big-tables \
--without-ndb-debug \
--without-docs \
--without-debug \
--without-bench

make && make install
		
		

/usr/local/$MYSQL_DIR/bin/mysql_install_db

other option

--without-isam
--without-innodb
--without-ndbcluster
--without-blackhole
--without-ibmdb2i
--without-federated
--without-example
--without-comment
--localstatedir=/usr/local/mysql/data
		

8.1.3. MySQL binary distribution

		
shell> groupadd mysql
shell> useradd -r -g mysql mysql
shell> cd /usr/local
shell> tar zxvf /path/to/mysql-VERSION-OS.tar.gz
shell> ln -s full-path-to-mysql-VERSION-OS mysql
shell> cd mysql
shell> chown -R mysql .
shell> chgrp -R mysql .
shell> scripts/mysql_install_db --user=mysql
shell> chown -R root .
shell> chown -R mysql data
# Next command is optional
shell> cp support-files/my-medium.cnf /etc/my.cnf
shell> bin/mysqld_safe --user=mysql &
# Next command is optional
shell> cp support-files/mysql.server /etc/init.d/mysql.server
		
		

install core database

		
[root@test mysql]# ./scripts/mysql_install_db
Installing MySQL system tables...
100428 23:16:20 [Warning] '--skip-locking' is deprecated and will be removed in a future release. Please use '--skip-external-locking' instead.
OK
Filling help tables...
100428 23:16:20 [Warning] '--skip-locking' is deprecated and will be removed in a future release. Please use '--skip-external-locking' instead.
OK

To start mysqld at boot time you have to copy
support-files/mysql.server to the right place for your system

PLEASE REMEMBER TO SET A PASSWORD FOR THE MySQL root USER !
To do so, start the server, then issue the following commands:

./bin/mysqladmin -u root password 'new-password'
./bin/mysqladmin -u root -h db.example.com password 'new-password'

Alternatively you can run:
./bin/mysql_secure_installation

which will also give you the option of removing the test
databases and anonymous user created by default.  This is
strongly recommended for production servers.

See the manual for more instructions.

You can start the MySQL daemon with:
cd . ; ./bin/mysqld_safe &

You can test the MySQL daemon with mysql-test-run.pl
cd ./mysql-test ; perl mysql-test-run.pl

Please report any problems with the ./bin/mysqlbug script!
		
		

set root's password

[root@test mysql]# cp support-files/mysql.server /etc/init.d/mysqld
[root@test mysql]# /etc/init.d/mysqld start
Starting MySQL.                                            [  OK  ]

[root@test mysql]# ./bin/mysqladmin -u root password 'chen'
[root@test mysql]# ./bin/mysqladmin -u root -h db.example.com password 'chen'
		

test

		
[root@test mysql]# ./bin/mysql -uroot -pchen
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.1.45 MySQL Community Server (GPL)

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql>
		
		

8.1.4. mysql-5.5.21-debian6.0-i686.deb

		
sudo apt-get install libaio1


sudo groupadd mysql
sudo useradd -r -g mysql mysql

sudo dpkg -i mysql-5.5.21-debian6.0-i686.deb

cd /opt/mysql/
sudo chown -R mysql .
sudo chgrp -R mysql .

cd server-5.5/

sudo support-files/binary-configure

sudo chown -R mysql data

# Next command is optional
shell> cp support-files/my-medium.cnf /etc/my.cnf

shell> bin/mysqld_safe --user=mysql &

# Next command is optional
sudo cp support-files/mysql.server /etc/init.d/mysql
		
		

8.1.5. CentOS 6.2 + MySQL 5.5.25 (RPM)

準備下面的軟件包

# ls -1
MySQL-client-5.5.25-1.el6.x86_64.rpm
MySQL-devel-5.5.25-1.el6.x86_64.rpm
MySQL-server-5.5.25-1.el6.x86_64.rpm
MySQL-shared-5.5.25-1.el6.x86_64.rpm
MySQL-shared-compat-5.5.25-1.el6.x86_64.rpm
		

使用 yum 本地安裝 rpm, yum 可以幫你解決依賴于衝突

# yum localinstall MySQL-*
		
# /etc/init.d/mysql start
Starting MySQL... SUCCESS!

# /usr/bin/mysqladmin -u root password 'tUG26WSslP30bkbwtMhn'
		

8.1.6. mysql-admin

$ sudo apt-get install mysql-admin
		

運行mysql-admin

/usr/bin/mysql-admin
		

運行 mysql-query-browser

mysql-query-browser --query="SELECT * FROM users"
		

8.1.7. Installing MySQL on Linux Using the MySQL Yum Repository

8.1.7.1. MySQL 5.6

http://dev.mysql.com/doc/mysql-repo-excerpt/5.6/en/linux-installation-yum-repo.html

yum localinstall http://dev.mysql.com/get/mysql-community-release-el6-5.noarch.rpm
			

安裝MySQL Server

yum install mysql-server
chkconfig mysqld on
service mysqld start		
			

修改root密碼

mysqladmin -u root password 'new-password'		
			

安全設置嚮導

/usr/bin/mysql_secure_installation		
			

8.1.7.2. MySQL 5.7

			
yum localinstall -y http://dev.mysql.com/get/mysql57-community-release-el7-7.noarch.rpm
yum install mysql-server -y
systemctl enable mysqld
systemctl start mysqld

cp /etc/my.cnf{,.original}

cat >> /etc/security/limits.d/20-nofile.conf <<EOF

mysql soft nofile 40960
mysql hard nofile 40960
EOF

cat >> /etc/my.cnf.d/default.cnf <<EOF
[mysqld]
skip-name-resolve
max_connections=8192
default-storage-engine=INNODB

#wait_timeout=30
#interactive_timeout=30

character-set-server=utf8
collation_server=utf8_general_ci
init_connect='SET NAMES utf8'

explicit_defaults_for_timestamp=true

query_cache_type=1
query_cache_size=512M

[client]
character_set_client=utf8

EOF
			
			

MySQL 5.7 會隨機分配一個密碼給用戶

grep "A temporary password" /var/log/mysqld.log
			

登陸後修改密碼

ALTER USER root@localhost identified by 'MQiEge1ikst7S_6tlXzBOmt_4b';
ALTER USER root@localhost PASSWORD EXPIRE NEVER;
			

8.1.8. Firewall

iptables

iptables -A INPUT -i eth0 -p tcp -s xxx.xxx.xxx.xxx --dport 3306 -j ACCEPT
		

8.1.9. Limit 狀態

$ sudo cat /proc/`pidof mysqld`/limits
Limit                     Soft Limit           Hard Limit           Units     
Max cpu time              unlimited            unlimited            seconds   
Max file size             unlimited            unlimited            bytes     
Max data size             unlimited            unlimited            bytes     
Max stack size            10485760             unlimited            bytes     
Max core file size        0                    unlimited            bytes     
Max resident set          unlimited            unlimited            bytes     
Max processes             62662                62662                processes 
Max open files            20480                20480                files     
Max locked memory         65536                65536                bytes     
Max address space         unlimited            unlimited            bytes     
Max file locks            unlimited            unlimited            locks     
Max pending signals       62662                62662                signals   
Max msgqueue size         819200               819200               bytes     
Max nice priority         0                    0                    
Max realtime priority     0                    0                    
Max realtime timeout      unlimited            unlimited            us   		
		

8.1.10. 使用 Btrfs 檔案系統存儲mysql數據

		
#!/bin/sh
systemctl stop mysqld

btrfs subvolume create /srv/@mysql
btrfs subvolume list /srv/

UUID=$(blkid | grep btrfs | sed -e 's/.*UUID="\([^"]*\)".*/\1/')
# UUID=786f570d-fe5c-4d5f-832a-c1b0963dd4e6 /srv btrfs defaults 1 1
cat << EOF >> /etc/fstab
UUID=${UUID} /var/lib/mysql  btrfs   noatime,nodiratime,subvol=@mysql 0 2
EOF

mkdir /tmp/mysql
mv /var/lib/mysql/* /tmp/mysql/

mount /var/lib/mysql/
chown mysql:mysql /var/lib/mysql

mv /tmp/mysql/* /var/lib/mysql/

systemctl start mysqld