Centos7下快速安装mysql5.7

Posted 2021-12-22 feko大魔王

安装mysql5.7

1.提前准备

yum install gcc mysql-libs mysql-devel -y
useradd mysql -s /sbin/nologin -M 
if [ -f /etc/my.cnf ];then
    /bin/mv /etc/my.cnf /etc/my.cnf.bak
fi
mkdir /data/soft/mysql -p        ##mysql程序目录
mkdir /data/db/mysql -p          ##mysql数据目录
mkdir /tmp/mysql                 ##mysql socket文件目录  
mkdir /data/db/mysql/binlog      ##mysql binlog目录
chown -R mysql.mysql /data/soft/mysql
chown -R mysql.mysql /data/db/mysql
chown -R mysql.mysql /tmp/mysql 

2.下载二进制包

wget https://cdn.mysql.com//Downloads/MySQL-5.7/mysql-5.7.36-linux-glibc2.12-x86_64.tar.gz
## 或者网盘下载 链接: https://caiyun.139.com/m/i?185CDQsUyy6B5  提取码:uRG0  
tar zxf mysql-5.7.36-linux-glibc2.12-x86_64.tar.gz
mv mysql-5.7.36-linux-glibc2.12-x86_64/*   /data/soft/mysql/

3.配置my.cnf文件

cat > /data/soft/mysql/my.cnf  <<EOF
[mysql]
default-character-set=utf8
host = localhost
socket=/tmp/mysql/mysql.sock
[mysqld]
user        = mysql
bind-address = 0.0.0.0
socket=/tmp/mysql/mysql.sock
basedir=/data/soft/mysql
datadir=/data/db/mysql/data
log-bin=/data/db/mysql/binlog/binlog
expire_logs_days = 2
server-id=1
#skip-name-resolve
max_connections=4000
default_storage_engine          = InnoDB
character_set_server            = utf8
# INNODB OPTIONS # 
innodb_buffer_pool_size         = 2G
innodb_log_file_size            = 256M
innodb_log_buffer_size          = 32M
innodb_flush_log_at_trx_commit  = 2
innodb_file_per_table           = 1
innodb_open_files               = 2048
# CACHES AND LIMITS # 
tmp_table_size                  = 256M
max_heap_table_size             = 256M
query_cache_type                = 0
query_cache_size                = 0
thread_cache_size               = 32
open_files_limit                = 65535
table_definition_cache          = 4096
table_open_cache                = 2048
interactive_timeout             = 31536000
wait_timeout                    = 31536000
# MyISAM # 
key_buffer_size                 = 32M
#myisam_recover                  = FORCE,BACKUP
# SAFETY # 
max_allowed_packet              = 1024M
max_connect_errors              = 10000
sql_mode                        = NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
innodb                          = FORCE
[mysqldump]
quick
max_allowed_packet = 1024M
[mysql]
no-auto-rehash
# Remove the next comment character if you are not familiar with SQL
#safe-updates
[myisamchk]
key_buffer_size = 128M
sort_buffer_size = 128M
read_buffer = 4M
write_buffer = 4M
[mysqlhotcopy]
interactive-timeout
EOF

4.配置启动脚本

/bin/cp   /data/soft/mysql/support-files/mysql.server /etc/rc.d/init.d/mysqld
sed -i "s#conf=/etc/my.cnf#conf=/data/soft/mysql/my.cnf#g" /etc/rc.d/init.d/mysqld
sed -i "s#conf=/etc/my.cnf#conf=/data/soft/mysql/my.cnf#g" /etc/rc.d/init.d/mysqld
sed -i "s#datadir=/usr/local/mysql/data#datadir=/data/db/mysql#g" /etc/rc.d/init.d/mysqld
sed -i "s#/usr/local/mysql#/data/soft/mysql#g" /etc/rc.d/init.d/mysqld

5.初始化mysql

/data/soft/mysql/bin/mysqld --defaults-file=/data/soft/mysql/my.cnf --user=mysql --basedir=/data/soft/mysql/  --initialize-insecure  ##初始化mysql
chmod +x /etc/init.d/mysqld
chkconfig mysqld on
chkconfig --add mysqld
/etc/init.d/mysqld start  ##启动mysql
mkdir -p /var/lib/mysql
ln -sf /tmp/mysql/mysql.sock  /tmp/mysql.sock
ln -s /tmp/mysql/mysql.sock /var/lib/mysql/mysql.sock 
echo export PATH="$PATH:/data/soft/mysql/bin" >> /etc/profile 
source /etc/profile

6.初始化root密码

mysqladmin  -uroot  password  123456  ##初始化root密码