Liunx(centos6.5)安装mysql5.7教程（tar）

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注  1.mysql5.7下载地址：https://dev.mysql.com/downloads/mysql/5.7.html#downloads

1.检查系统是否自带有mysql版本
rpm -qa | grep mysql

2.将其自带的mysql版本全部卸载（非常重要，如不卸载，后面会产生冲突）
rpm -e --nodeps mysql-libs-5.1.73-7.el6.x86_64

3.安装所需要的依赖，分别执行以下命令（有些电脑已经安装 ，最好还是执行一下这一步，不然到后面安装报错就比较麻烦了）输入以下命令，点击回车即可，等待安装完成就行
yum install -y numactl
yum install -y perl

4.解压mysql（我保存在/home目录下，可以根据自己的喜好创建mysql的保存路径）
tar -zxvf mysql-5.7.27-linux-glibc2.12-x86_64.tar.gz

mv mysql-5.7.27-linux-glibc2.12-x86_64 mysql

5.创建数据存放目录，初始化mysql（红框里边是数据库临时密码）

cd /home/mysql

mkdir data

./bin/mysqld --user=root --basedir=/home/mysql --datadir=/home/mysql/data --initialize

6.启动数据库，（如果这里你的安装目录不是/usr/local/mysql,启动都会报错）

sh ./support-files/mysql.server start

解决办法：修改mysql配置文件(红框里边的路径都需要修改)

vi ./support-files/mysql.server

保存退出，复制mysql的启动文件放到/etc/init.d/目录下

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

chmod 755 /etc/init.d/mysqld

cd /home/mysql

chown -R mysql.mysql .  （这部一定要执行，给data目录权限，否则回启动失败）

ln -s /home/mysql/bin/mysql /usr/bin/mysql （把bin目录下的mysql软连接到/usr/bin/目录下）

启动数据库
service mysqld start

7.登陆mysql（输入上一步找到的密码）
mysql -u root -p

8.修改mysql登陆密码
set password = password('123456');

9.开启 mysql 的远程登录
grant all privileges on *.* to 'root' @'%' identified by 'root';

10.刷新权限
flush privileges;

11.关闭防火墙

service iptables stop

15.开放 Linux 的对外访问的端口 3306
/sbin/iptables -I INPUT -p tcp --dport 3306 -j ACCEPT

16.将修改永久保存到防火墙中
/etc/rc.d/init.d/iptables save

 

mysql5.7默认是不带my.cnf配置文件，需要自己手动添加

vi /etc/my.cnf

把下面的配置复制保存即可

[client]
port            = 3306
socket          = /tmp/mysql.sock

[mysqldump]
quick
max_allowed_packet = 128M
#myisam_max_sort_file_size = 10G

[mysql]
no-auto-rehash
max_allowed_packet = 128M
#prompt                         = '(product)\u@\h [\d]> '
default_character_set          = utf8

[myisamchk]
key_buffer_size = 64M
sort_buffer_size = 512k
read_buffer = 2M
write_buffer = 2M

[mysqlhotcopy]
interactive-timeout

[mysqld_safe]
##malloc-lib= /usr/local/mysql/lib/mysql/libjemalloc.so

[mysqld]
skip-name-resolve

character-set-server = utf8
slow-query-log
sync_binlog = 1
binlog_format = row
max_binlog_size = 128M
binlog_cache_size = 1M
expire-logs-days = 5
back_log = 500
long_query_time=1
max_connections=1100
max_user_connections=1000
max_connect_errors=1000
lower_case_table_names = 1

wait_timeout=100
interactive_timeout=100

connect_timeout = 20
slave-net-timeout=30

max-relay-log-size = 256M

relay-log = relay-bin
transaction_isolation = Repeatable-Read

performance_schema=0
#myisam_recover
key_buffer_size = 64M
max_allowed_packet = 16M
#table_cache = 3096
table_open_cache = 6144

table_definition_cache = 4096
sort_buffer_size = 128k
read_buffer_size = 1M
read_rnd_buffer_size = 1M
join_buffer_size = 128k

myisam_sort_buffer_size = 32M
tmp_table_size = 128M
max_heap_table_size = 256M
query_cache_type=0
query_cache_size = 0
bulk_insert_buffer_size = 32M

thread_cache_size = 64
#thread_concurrency = 32
thread_stack = 192K
skip-sla 7ff7 ve-start
log_bin=mysql_log
server-id=3

遇到问题：

参考：https://blog.csdn.net/qq_34885405/article/details/93041509