[mysql]linux上,mysql5.7二进制安装

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[mysql]linux上,mysql5.7二进制安装

luckcheng 2018-03-26 17:53:29 浏览850
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准备
安装包(必须):
Linux - Generic (glibc 2.12) (x86, 64-bit), Compressed TAR Archive
安装libaio、numactl(非必须,如果在初始化mysql的时候报错就需要安装):

yum的两种安装方式:

yum search libaio  # search for info
yum search numactl
yum install libaio # install library
yum install numactl

APT-based安装方式:

apt-cache search libaio # search for info
apt-cache search numactl
apt-get install libaio # install library
apt-get install numactl

在linux上添加mysql用户组以及用户

groupadd mysql
useradd -g mysql -s /sbin/nologin mysql

*解压mysql到指定目录

        这里笔者放到了/usr/local/mysql/
sudo tar zxvf mysql-5.7.21-linux-glibc2.12-x86_64.tar.gz

重命名

sudo mv mysql-5.7.21-linux-glibc2.12-x86_64.tar.gz mysql-5.7.21-3306

简单说一下笔者数据库目录规划

文件类型    实例3306
数据datadir:/usr/local/mysql/mysql-5.7.21-3306/data
参数文件my.cnf:/usr/local/mysql/mysql-5.7.21-3306/etc/my.cnf    
错误日志log-error:/usr/local/mysql/mysql-5.7.21-3306/log/mysql_error.log    
二进制日志log-bin:/usr/local/mysql/mysql-5.7.21-3306/binlogs/mysql-bin   
慢查询日志slow_query_log_file:/usr/local/mysql/mysql-5.7.21-3306/log/mysql_slow_query.log    
套接字socket文件:/usr/local/mysql/mysql-5.7.21-3306/run/mysql.sock   
pid文件:/usr/local/mysql/mysql-5.7.21-3306/run/mysql.pid

所以,我会在mysql-5.7.21-3306目录下创建run、etc、log、binlogs目录,并且赋予权限;

cd mysql-5.7.21-3306
sudo mkdir {run,etc,log,binlogs}
sudo chown -R mysql:mysql {run,etc,log,binlogs}

然后vim在目录下的etc中编辑my.cnf,my.cnf的配置不只是这些,我只配置了我需要的,具体的大家可以自己去好好了解下;

[client]
port=3306
socket=/usr/local/mysql/mysql-5.7.21-3306/run/mysql.sock

[mysqld]
port = 3306
socket = /usr/local/mysql/mysql-5.7.21-3306/run/mysql.sock
pid_file = /usr/local/mysql/mysql-5.7.21-3306/run/mysql.pid
datadir = /usr/local/mysql/mysql-5.7.21-3306/data
default_storage_engine = InnoDB
max_allowed_packet = 512M
max_connections = 2048
open_files_limit = 65535

skip-name-resolve
lower_case_table_names=1

character-set-server = utf8mb4
collation-server = utf8mb4_unicode_ci
init_connect='SET NAMES utf8mb4'


innodb_buffer_pool_size = 128M
innodb_log_file_size = 128M
innodb_file_per_table = 1
innodb_flush_log_at_trx_commit = 0


key_buffer_size = 64M

log-error = /usr/local/mysql/mysql-5.7.21-3306/log/mysql_error.log
log-bin = /usr/local/mysql/mysql-5.7.21-3306/binlogs/mysql-bin
slow_query_log = 1
slow_query_log_file = /usr/local/mysql/mysql-5.7.21-3306/log/mysql_slow_query.log
long_query_time = 5


tmp_table_size = 32M
max_heap_table_size = 32M
query_cache_type = 0
query_cache_size = 0

server-id=1

然后我们通过编辑好的my.cnf初始化mysql

sudo /usr/local/mysql/mysql-5.7.21-3306/bin/mysqld --defaults-file=/usr/local/mysql/mysql-5.7.21-3306/etc/my.cnf --basedir=/usr/local/mysql/mysql-5.7.21-3306 --datadir=/usr/local/mysql/mysql-5.7.21-3306/data --user=mysql --initialize

然后通过my.cnf启动服务

/usr/local/mysql/mysql-5.7.21-3306/bin/mysqld_safe  --defaults-file=/usr/local/mysql/mysql-5.7.21-3306/etc/my.cnf &

这里写图片描述

再查看下端口:

netstat -anp | grep 3306

这里写图片描述

ok,mysql服务已经跑起来了,如果是多实例的话,其实也差不多,大家把端口号改一下,其他步骤重新来一边,ok了;
那么,服务起来了,我们没设置密码,怎么登陆呢?

开始登陆mysql

原来为了加强安全性,MySQL5.7为root用户随机生成了一个密码,在error_log中。笔者这里的事例的话,文件为
/usr/local/mysql/mysql-5.7.21-3306/log/mysql_error.log

使用vim打开查看:

sudo vim /usr/local/mysql/mysql-5.7.21-3306/log/mysql_error.log

这里写图片描述

显示vim行号,第八行

2018-03-26T09:47:13.104037Z 1 [Note] A temporary password is generated for root@localhost: Y3Y)#dEYc(ZN

这里的

Y3Y)#dEYc(ZN

就是我们的启动密码

使用sock方式登录mysql

/usr/local/mysql/mysql-5.7.21-3306/bin/mysql -uroot -S /usr/local/mysql/mysql-5.7.21-3306/run/mysql.sock -p

这里写图片描述

okok,登录成功!

好了,如果我们想修改登录密码的话,传送门:
[mysql]MySQL修改账号密码的3种方法

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