自定义mysql-5.5.56版的安装路径讲义-创新互联

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mysql-5.5.56版本（二进制包安装）-自定义安装路径

安装路径：/application/mysql-5.5.56

1.前期准备

mysql依赖

libaio

yum install -y libaio

创建用户mysql，以该用户的身份执行mysql

useradd -s /bin/false -M mysql

下载mysql二进制包并解压

cd /tools wget https://dev.mysql.com/get/Downloads/MySQL-5.5/mysql-5.5.56-linux-glibc2.5-x86_64.tar.gz tar -zxf mysql-5.5.56-linux-glibc2.5-x86_64.tar.gz -C /application/

切换到/application目录，将mysql文件夹名改短,给mysql目录做一个软链接

cd /application/ mv mysql-5.5.56-linux-glibc2.5-x86_64/ mysql-5.5.56 ln -s mysql-5.5.56/ mysql

自定义mysql-5.5.56版的安装路径讲义

递归设置mysql目录的所属组和所属用户

chown -R mysql:mysql mysql-5.5.56/

2.mysql目录内操作

cd mysql

初始化数据库

会在mysql目录内生成一个data目录，存放数据库的目录

./scripts/mysql_install_db --basedir=/application/mysql --datadir=/application/mysql/data/ --user=mysql

更改所属用户和组

chown -R root . chown -R mysql data

除了mysql目录下的data目录所属用户不变，其他所有文件的所属用户改为root

拷贝配置文件

cp support-files/my-medium.cnf /etc/my.cnf

将mysql的配置文件拷贝为/etc/目录下的my.cnf

修改配置文件

sed -i 28i'log-error=/application/mysql/data/mysqld.error' /etc/my.cnf

在配置文件插入了一行，进行配置错误日志

/etc/my.cnf Content:

# Example MySQL config file for medium systems. # # This is for a system with little memory (32M - 64M) where MySQL plays # an important part, or systems up to 128M where MySQL is used together with # other programs (such as a web server) # # MySQL programs look for option files in a set of # locations which depend on the deployment platform. # You can copy this option file to one of those # locations. For information about these locations, see: # http://dev.mysql.com/doc/mysql/en/option-files.html # # In this file, you can use all long options that a program supports. # If you want to know which options a program supports, run the program # with the "--help" option. # The following options will be passed to all MySQL clients [client] #password = your_password port = 3306 socket = /tmp/mysql.sock # Here follows entries for some specific programs # The MySQL server [mysqld] port = 3306 log-error=/application/mysql/data/mysqld.error socket = /tmp/mysql.sock skip-external-locking key_buffer_size = 16M max_allowed_packet = 1M table_open_cache = 64 sort_buffer_size = 512K net_buffer_length = 8K read_buffer_size = 256K read_rnd_buffer_size = 512K myisam_sort_buffer_size = 8M # Don't listen on a TCP/IP port at all. This can be a security enhancement, # if all processes that need to connect to mysqld run on the same host. # All interaction with mysqld must be made via Unix sockets or named pipes. # Note that using this option without enabling named pipes on Windows # (via the "enable-named-pipe" option) will render mysqld useless! # #skip-networking # Replication Master Server (default) # binary logging is required for replication log-bin=mysql-bin # binary logging format - mixed recommended binlog_format=mixed # required unique id between 1 and 2^32 - 1 # defaults to 1 if master-host is not set # but will not function as a master if omitted server-id = 1 # Replication Slave (comment out master section to use this) # # To configure this host as a replication slave, you can choose between # two methods : # # 1) Use the CHANGE MASTER TO command (fully described in our manual) - # the syntax is: # # CHANGE MASTER TO MASTER_HOST=, MASTER_PORT=, # MASTER_USER=, MASTER_PASSWORD= ; # # where you replace , , by quoted strings and # by the master's port number (3306 by default). # # Example: # # CHANGE MASTER TO MASTER_HOST='125.564.12.1', MASTER_PORT=3306, # MASTER_USER='joe', MASTER_PASSWORD='secret'; # # OR # # 2) Set the variables below. However, in case you choose this method, then # start replication for the first time (even unsuccessfully, for example # if you mistyped the password in master-password and the slave fails to # connect), the slave will create a master.info file, and any later # change in this file to the variables' values below will be ignored and # overridden by the content of the master.info file, unless you shutdown # the slave server, delete master.info and restart the slaver server. # For that reason, you may want to leave the lines below untouched # (commented) and instead use CHANGE MASTER TO (see above) # # required unique id between 2 and 2^32 - 1 # (and different from the master) # defaults to 2 if master-host is set # but will not function as a slave if omitted #server-id = 2 # # The replication master for this slave - required #master-host = # # The username the slave will use for authentication when connecting # to the master - required #master-user = # # The password the slave will authenticate with when connecting to # the master - required #master-password = # # The port the master is listening on. # optional - defaults to 3306 #master-port = # # binary logging - not required for slaves, but recommended #log-bin=mysql-bin # Uncomment the following if you are using InnoDB tables #innodb_data_home_dir = /usr/local/mysql/data #innodb_data_file_path = ibdata1:10M:autoextend #innodb_log_group_home_dir = /usr/local/mysql/data # You can set .._buffer_pool_size up to 50 - 80 % # of RAM but beware of setting memory usage too high #innodb_buffer_pool_size = 16M #innodb_additional_mem_pool_size = 2M # Set .._log_file_size to 25 % of buffer pool size #innodb_log_file_size = 5M #innodb_log_buffer_size = 8M #innodb_flush_log_at_trx_commit = 1 #innodb_lock_wait_timeout = 50 [mysqldump] quick max_allowed_packet = 16M [mysql] no-auto-rehash # Remove the next comment character if you are not familiar with SQL #safe-updates [myisamchk] key_buffer_size = 20M sort_buffer_size = 20M read_buffer = 2M write_buffer = 2M [mysqlhotcopy] interactive-timeout

拷贝启动程序

cp support-files/mysql.server /etc/init.d/mysql

将mysql的启动程序拷贝到/etc/init.d/目录下，以便启动程序

编辑启动文件，配置启动目录

方法一：

思路是给配置文件提供的变量进行赋值。较麻烦。

sed -i ':a;N;$!ba;s/basedir=\ndatadir=/basedir=\/application\/mysql\ndatadir=\/application\/mysql\/data/g' /etc/init.d/mysql sed -i ':a;N;$!ba;s/mysqld_pid_file_path=\n/mysqld_pid_file_path=\/application\/mysql\/data\/mysqld.pid\n/g' /etc/init.d/mysql

等价于将45、46两行

basedir= datadir= mysqld_pid_file_path= 替换成 basedir=/application/mysql datadir=/application/mysql/data mysqld_pid_file_path=/application/mysql/data/mysql.pid

方法二（推荐）：

思路是将脚本的默认地址（/usr/local/mysql）直接替换成自定义路径（/application/mysql），便不用给变量赋值

sed -i 's#/usr/local/mysql#/application/mysql#g' /etc/init.d/mysql

到这里mysql安装完成可以正常启动

3.后期结尾

命令创建软链接

将mysql命令创建软链接到环境变量的目录，使用户可以在变量找到相应的命令

ln -s /application/mysql/bin/* /usr/local/sbin

设置与修改密码

第一次设置密码：

mysqladmin -u'' password ''

例子：

mysqladmin -u'root' password 'PassWord'

往后修改密码：

mysqladmin -u'' -p'' password ''

例子：

mysqladmin -u'root' -p'PassWord' password 'NewPassWord'

登录mysql

[root@www mysql]# mysql -u'root' -p'PassWord' Welcome to the MySQL monitor. Commands end with ; or \g. ... mysql> #成功登陆到mysql控制台 [root@www mysql]# mysql -uroot -pPassWord Welcome to the MySQL monitor. Commands end with ; or \g. ... mysql> #成功登陆到mysql控制台 [root@www mysql]# mysql -u'root' -p Enter password: #这里输入用户的密码 Welcome to the MySQL monitor. Commands end with ; or \g. ... mysql> #成功登陆到mysql控制台 [root@www mysql]# mysql -uroot -p Enter password: #这里输入用户的密码 Welcome to the MySQL monitor. Commands end with ; or \g. ... mysql> #成功登陆到mysql控制台

键入quit或Ctrl + d退出mysql环境

mysql> quit Bye [root@www mysql]# or mysql> ^DBye [root@www mysql]#

4.常用命令

进入mysql

mysql -u'root' -p'PassWord' mysql -uroot -pPassWord mysql -u'root' -p mysql -uroot -p

启动mysql

service mysql start

停止mysql

service mysql stop

重启mysql

service mysql restart

看了以上关于自定义mysql-5.5.56版的安装路径讲义，希望能给大家在实际运用中带来一定的帮助。本文由于篇幅有限，难免会有不足和需要补充的地方，如有需要更加专业的解答，可在官网联系我们的24小时售前售后，随时帮您解答问题的。

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