通过捆包的方式安装msyql服务

去msyql官网下载mysql8.0.41版本的rpm捆包:
tar xf mysql-8.0.41-1.el7.x86_64.rpm-bundle.tar
yum install *.rpm
grep password /var/log/mysqld.log
登录:
mysql -p
改密码:使用password子命令

vim /etc/my.cnf
validate_password.policy = 0
validate_password.length = 6 #密码长度改成6
或者:
cat >> /etc/my.cnf <<EOF
validate_password.policy=0
validate_password.length=6
EOF

启动:
systemctl enable --now mysqld

改登录密码:
mysql> alter user root@localhost identified by '123456';
或者:
mysqladmin -p password "123456"

查看配置文件/数据目录等:
rpm -ql mysql-community-server

[root@db01 ~]# ll /var/lib/mysql
total 94668
-rw-r----- 1 mysql mysql 56 Apr 14 22:00 auto.cnf
-rw-r----- 1 mysql mysql 180 Apr 14 22:01 binlog.000001
-rw-r----- 1 mysql mysql 493 Apr 15 10:00 binlog.000002
-rw-r----- 1 mysql mysql 157 Apr 15 10:00 binlog.000003
-rw-r----- 1 mysql mysql 48 Apr 15 10:00 binlog.index
-rw------- 1 mysql mysql 1676 Apr 14 22:00 ca-key.pem
-rw-r--r-- 1 mysql mysql 1112 Apr 14 22:00 ca.pem
-rw-r--r-- 1 mysql mysql 1112 Apr 14 22:00 client-cert.pem
-rw------- 1 mysql mysql 1676 Apr 14 22:00 client-key.pem
-rw-r----- 1 mysql mysql 196608 Apr 15 10:02 #ib_16384_0.dblwr
-rw-r----- 1 mysql mysql 8585216 Apr 14 22:00 #ib_16384_1.dblwr
-rw-r----- 1 mysql mysql 3833 Apr 14 22:01 ib_buffer_pool
-rw-r----- 1 mysql mysql 12582912 Apr 15 10:00 ibdata1
-rw-r----- 1 mysql mysql 12582912 Apr 15 10:00 ibtmp1
drwxr-x--- 2 mysql mysql 4096 Apr 15 10:00 #innodb_redo
drwxr-x--- 2 mysql mysql 187 Apr 15 10:00 #innodb_temp
drwxr-x--- 2 mysql mysql 143 Apr 14 22:00 mysql
-rw-r----- 1 mysql mysql 29360128 Apr 15 10:00 mysql.ibd
srwxrwxrwx 1 mysql mysql 0 Apr 15 10:00 mysql.sock
-rw------- 1 mysql mysql 5 Apr 15 10:00 mysql.sock.lock
drwxr-x--- 2 mysql mysql 8192 Apr 14 22:00 performance_schema
-rw------- 1 mysql mysql 1676 Apr 14 22:00 private_key.pem
-rw-r--r-- 1 mysql mysql 452 Apr 14 22:00 public_key.pem
-rw-r--r-- 1 mysql mysql 1112 Apr 14 22:00 server-cert.pem
-rw------- 1 mysql mysql 1680 Apr 14 22:00 server-key.pem
drwxr-x--- 2 mysql mysql 28 Apr 14 22:00 sys
-rw-r----- 1 mysql mysql 16777216 Apr 15 10:02 undo_001
-rw-r----- 1 mysql mysql 16777216 Apr 15 10:02 undo_002