1. Here I will install Mysql in the /usr/local/mysql directory, and it can also be installed in other places;
mkdir /usr/local/mysql
2. Download the installation package from the MySQL official website
3. Unzip and copy
tar -zxvf mysql-5.7.11-Linux-glibc2.5-x86_64.tar.gz
mv mysql-5.7.11-Linux-glibc2.5-x86_64/* /usr/local/mysql/
4. Create the data directory
mkdir /usr/local/mysql/data
5. Create mysql user group and its users
groupadd mysql
useradd -r -g mysql mysql
If it already exists, it doesn't matter, it doesn't affect the installation
6. Initialize data
[root@localhost mysql] ./bin/mysql_install_db --user=mysql --basedir=/usr/local/mysql/ --datadir=/usr/local/mysql/data/
2016-01-20 02:47:35 [WARNING] mysql_install_db is deprecated. Please consider switching to mysqld --initialize
2016-01-20 02:47:45 [WARNING] The bootstrap log isn't empty:
2016-01-20 02:47:45 [WARNING] 2016-01-19T18:47:36.732678Z 0 [Warning] --bootstrap is deprecated. Please consider using --initialize instead
2016-01-19T18:47:36.750527Z 0 [Warning] Changed limits: max_open_files: 1024 (requested 5000)
2016-01-19T18:47:36.750560Z 0 [Warning] Changed limits: table_open_cache: 431 (requested 2000)
7. Copy the configuration file to /etc/my.cnf
cp -a ./support-files/my-default.cnf /etc/my.cnf (select y)
I don't have my-default.cnf installed, I copied it from somewhere else
8. The MySQL service script is placed in the system service
cp -a ./support-files/mysql.server /etc/init.d/mysqld
Modify my.cnf file
# These are commonly set, remove the # and set as required.
basedir = /usr/local/mysql
datadir = / usr/local/mysql/data
port = 3306
# server_id = .....
socket = /tmp/mysql.sock //Because someone has installed mysql in the test environment before me, so I don't know why this address, I Write /var/lib/mysql.sock to make
character-set-server = utf8
# Remove leading # to set options mainly useful for reporting servers.
# The server defaults are faster for transactions and fast SELECTs.
# Adjust sizes as needed, experiment to find the optimal values.
# join_buffer_size = 128M
# sort_buffer_size = 2M
# read_rnd_buffer_size = 2M
9. Create In
ln -s /usr/local/mysql/ /usr/bin/
10. Start the service
service mysqld start
11. Initialize password
mysql5.7 will generate an initialization password in the root .mysql_secret file.
[root@localhost ~]# cat /root/.mysql_secret
# Password set for user 'root@localhost' at 2017-03-16 00:52:34
ws;fmT7yh0CM
12. Log in and change the password. If the wrong password is always reported here, you can write it in my.cnf
Original: https://blog.csdn.net/lisongjia123/article/details/57418989
After you can log in without a password:
After logging in with the modified password, log in again, and then use alter to modify the password and it can be used normally.
[root@localhost ~]# mysql -u root -p
alter user root@localhost identified by 'tiger';
flush privileges;
13. Log out and log in again, complete
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
+--------------------+
rows in set (0.11 sec)
原创：https://www.cnblogs.com/xiaotao726/p/6562265.html
