下载mysql，https://dev.mysql.com/downloads/mysql/5.6.html#downloads , 选择Linux - Generic , 下载64位的tar.gz文件

1、新建mysql用户和组

# groupadd mysql

# useradd -g mysql -G hadoop -d /usr/local/mysql mysql

# groups mysql     #验证

# id mysql        #验证

2、解压并安装mysql ， mysql-5.6.40-linux-glibc2.12-x86_64.tar.gz放在/opt/software目录下的（这个位置随意）

# cd /opt/software

# tar -zxvf mysql-5.6.40-linux-glibc2.12-x86_64.tar.gz

# mv mysql-5.6.40-linux-glibc2.12-x86_64 /usr/local/mysql

# cd /usr/local/mysql

# chown -R mysql:mysql ./

# su - mysql

$ scripts/mysql_install_db --user=mysql --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data    #安装mysql，会自动生成my.cnf和，mysql.server文件

$ exit

3、修改配置文件

# mv my.cnf /etc/my.cnf

# vi /etc/my.cnf

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

# chmod +x /etc/rc.d/init.d/mysql

# chkconfig --del mysql //删除原有的mysql服务

# chkconfig --add mysql   //添加mysql服务

# chkconfig --level 345 mysql on //设置开机自启动 ,可以使用service启动mysql

# vi /etc/profile    #增加mysql环境变量

export    PATH=/usr/local/mysql/bin:$PATH

my.cnf

[client]

port            = 3306

socket          = /usr/local/mysql/data/mysql.sock

[mysqld]

port            = 3306

socket          = /usr/local/mysql/data/mysql.sock

skip-external-locking

key_buffer_size = 256M

sort_buffer_size = 2M

read_buffer_size = 2M

read_rnd_buffer_size = 4M

query_cache_size= 32M

max_allowed_packet = 16M

myisam_sort_buffer_size=128M

tmp_table_size=32M

table_open_cache = 512

thread_cache_size = 8

wait_timeout = 86400

interactive_timeout = 86400

max_connections = 600

# Try number of CPU's*2 for thread_concurrency

thread_concurrency = 32

#isolation level and default engine

default-storage-engine = INNODB

transaction-isolation = READ-COMMITTED

server-id  = 1

basedir    = /usr/local/mysql

datadir    = /usr/local/mysql/data

pid-file=/usr/local/mysql/data/hostname.pid

#open performance schema

log-warnings

sysdate-is-now

binlog_format = MIXED

log_bin_trust_function_creators=1

log-error  = /usr/local/mysql/data/hostname.err

log-bin=/usr/local/mysql/arch/mysql-bin

#other logs

#general_log =1

#general_log_file  = /usr/local/mysql/data/general_log.err

#slow_query_log=1

#slow_query_log_file=/usr/local/mysql/data/slow_log.err

#for replication slave

#log-slave-updates

#sync_binlog = 1

#for innodb options

innodb_data_home_dir = /usr/local/mysql/data/

innodb_data_file_path = ibdata1:500M:autoextend

innodb_log_group_home_dir = /usr/local/mysql/arch

innodb_log_files_in_group = 2

innodb_log_file_size = 200M

innodb_buffer_pool_size = 2048M

innodb_additional_mem_pool_size = 50M

innodb_log_buffer_size = 16M

innodb_lock_wait_timeout = 100

#innodb_thread_concurrency = 0

innodb_flush_log_at_trx_commit = 1

innodb_locks_unsafe_for_binlog=1

#innodb io features: add for mysql5.5.8

performance_schema

innodb_read_io_threads=4

innodb-write-io-threads=4

innodb-io-capacity=200

#purge threads change default(0) to 1 for purge

innodb_purge_threads=1

innodb_use_native_aio=on

#case-sensitive file names and separate tablespace

innodb_file_per_table = 1

lower_case_table_names=1

[mysqldump]

quick

max_allowed_packet = 16M

[mysql]

no-auto-rehash

[mysqlhotcopy]

interactive-timeout

[myisamchk]

key_buffer_size = 256M

sort_buffer_size = 256M

read_buffer = 2M

write_buffer = 2M

4、启动mysql

# ps -ef|grep mysql 

# kill -9 $(pgrep mysql)    #若存在mysql进程，则全部kill

# ps aux|grep mysql kill -9   #或者这样kill

# su - mysql

$ service mysql start        #启动方法一

$ ./support-files/mysql.server start    #启动方法二

$ bin/mysqld_safe &    #启动方法三，一定要加&,否则启动完后不会退出命令

5、新建用户及授权

# su - mysql

$ mysql

$ > show databases;

$ > use mysql;    #使用mysql数据库

$ > select host,password,user from mysql.user;        #图一

图一

> update mysql.user set password=password('123456') where user='root';    #更改密码

> create database testone;    #创建数据库testone

> delete from mysql.user where user=''    #否则新建的localhost用户无法登陆

> grant all privileges on testone.* to hadoop@'%' identified by '123456';

> flush privileges;

> quit

$ service mysql restart

$ mysql -uhadoop -p123456    #可使用

6、查看mysql连接进程

$ mysql -uroot -p123456

mysql> show processlist;

mysql>  kill 2;

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原文链接：https://www.jianshu.com/p/cfe0d9d56b56
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• 发表于 2020-01-12 13:23:55
• 阅读 ( 827 )
• 分类：数据库

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