Detailed tutorial on installing Mysql5.7.19 on Centos7 under Linux

1. Download MySQL

URL: https://dev.mysql.com/downloads/mysql/

2. Select the source package, click to download the general version

Just download it without logging in

3. Unzip and compile

tar -zxvf mysql-5.7.19.tar.gz
cd mysql-5.7.19.tar.gz

Create a data directory mkdir -p /data/mysql

Compile with cmake first. If there is no such command, you need to install it with yum first.

cmake -DCMAKE_INSTALL_PREFIX=/usr/local/mysql/ #This is the location of the mysql directory after compilation and installation. You can change it yourself -DMYSQL_DATADIR=/data/mysql/ #This points to the data directory -DMYSQL_UNIX_ADDR=/tmp/mysql.sock
-DSYSCONFDIR=/usr/local/mysql-5.7/conf/
-DWITH_MYISAM_STORAGE_ENGINE=1
-DWITH_INNOBASE_STORAGE_ENGINE=1
-DWITH_BLACKHOLE_STORAGE_ENGINE=1
-DWITH_ARCHIVE_STORAGE_ENGINE=1
-DWITH_MEMORY_STORAGE_ENGINE=1
-DWITH_READLINE=1
-DMYSQL_TCP_PORT=3306
-DENABLED_LOCAL_INFILE=1
-DDEFAULT_CHARSET=utf8
-DDEFAULT_COLLATION=utf8_general_ci
-DMYSQL_USER=mysql
-DWITH_SSL=system
-DWITH_ZLIB=system -DDOWNLOAD_BOOST=1 -DWITH_BOOST=/usr/local/boost #Starting from MySQL 5.7.5, the Boost library must be installed

After compiling, make && make install a long wait....then the installation is complete

After the installation is complete, there will be a directory mysql under the path /usr/local/. This directory is the path I compiled and installed.

DCMAKE_INSTALL_PREFIX=/usr/local/mysql/

Generally, for security reasons, we will create a mysql user and mysql group and execute the following command

#Add user group groupadd mysql
#Add user mysql to user group mysql
useradd
-g mysql mysql

Grant mysql permissions

chown -R mysql:mysql mysql
#Add user group groupadd mysql
#Add user mysql to user group mysql
useradd -g mysql mysql

Grant mysql permissions

chown -R mysql:mysql mysql

4. Next, configure the startup direction and set it to start at boot

Configure /ect/my.cnf . If there is no my.cnf, you can create one yourself. This is for reference only.

[client]
ort = 3306
ocket = /tmp/mysql.sock
default-character-set = utf8mb4
[mysqld]
ort = 3306
ocket = /tmp/mysql.sock
asedir = /usr/local/mysql
datadir = /data/mysql
id-file = /data/mysql/mysql.pid
user = mysql
ind-address = 0.0.0.0
erver-id = 1
init-connect = 'SET NAMES utf8mb4'
character-set-server = utf8mb4
#skip-name-resolve
#skip-networking
ack_log = 300
max_connections = 1000
max_connect_errors = 6000
open_files_limit = 65535
table_open_cache = 128
max_allowed_packet = 4M
inlog_cache_size = 1M
max_heap_table_size = 8M
tmp_table_size = 16M
read_buffer_size = 2M
read_rnd_buffer_size = 8M
ort_buffer_size = 8M
join_buffer_size = 8M
key_buffer_size = 4M
thread_cache_size = 8
query_cache_type = 1
query_cache_size = 8M
query_cache_limit = 2M
ft_min_word_len = 4
log_bin = mysql-bi
inlog_format = mixed
expire_logs_days = 30
log_error = /data/mysql/mysql-error.log
low_query_log = 1
long_query_time = 1
low_query_log_file = /data/mysql/mysql-slow.log
erformance_schema = 0
explicit_defaults_for_timestamp
#lower_case_table_names = 1
kip-external-locking
default_storage_engine = InnoDB
#default-storage-engine = MyISAM
innodb_file_per_table = 1
innodb_open_files = 500
innodb_buffer_pool_size = 64M
innodb_write_io_threads = 4
innodb_read_io_threads = 4
innodb_thread_concurrency = 0
innodb_purge_threads = 1
innodb_flush_log_at_trx_commit = 2
innodb_log_buffer_size = 2M
innodb_log_file_size = 32M
innodb_log_files_in_group = 3
innodb_max_dirty_pages_pct = 90
innodb_lock_wait_timeout = 120
ulk_insert_buffer_size = 8M
myisam_sort_buffer_size = 8M
myisam_max_sort_file_size = 10G
myisam_repair_threads = 1
interactive_timeout = 28800
wait_timeout = 28800
[mysqldump]
quick
max_allowed_packet = 16M
[myisamchk]
key_buffer_size = 8M
ort_buffer_size = 8M
read_buffer = 4M
write_buffer = 4M

Next, execute the initialization database statement:

Note that mysql_install_db is no longer recommended. It is recommended to use mysqld –initialize to complete instance initialization.

/usr/local/mysql/bin/mysqld --initialize-insecure --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql

This step is very important. If you start the database directly without initialization, an error will be reported.

ERROR! The server quit without updating PID file (/data/mysql/mysql.pid).

If the initialization fails or reports the following error, you need to clear your /data/mysql directory first, because there is data under the mysql directory, so the initialization execution is terminated.

2017-08-29T13:39:47.241469Z 0 [ERROR] --initialize specified but the data directory has files in it. Aborting.2017-08-29T13:39:47.241536Z 0 [ERROR] Aborting

Clear and then re-initialize

/usr/local/mysql/bin/mysqld --initialize-insecure --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql

Next you can start mysql

service mysqld start

/usr/local/mysql/bin/mysql -uroot -

Because the initialization --initialize-insecure has no password by default, you don't need to enter the password, just confirm it;

If login error occurs

ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)

Check whether you have successfully started the database. You can execute ps -ef | grep mysql to see if the process is started.

Empty password is not safe, so we need to set a password. The "root" in the following command is the password setting area. My password is set to root. You can modify it yourself.

[root@localhost local]# /usr/local/mysql/bin/mysql -e "grant all privileges on *.* to root@'127.0.0.1' identified by \"root\" with grant option;"[root@localhost local]# /usr/local/mysql/bin/mysql -e "grant all privileges on *.* to root@'localhost' identified by \"root\" with grant option;"

Next, log in again to test the password change and if it is successful, you are done!

Summarize

The above is a detailed tutorial on how to install Mysql5.7.19 on Centos7 under Linux. I hope it will be helpful to you. If you have any questions, please leave me a message and I will reply to you in time. I would also like to thank everyone for their support of the 123WORDPRESS.COM website!

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