MySQL8.0.19安装

官网下载安装包：mysql-8.0.19-linux-glibc2.12-x86_64.tar.xz

安装环境：CentOS Linux release 7.5.1804 (Core)

解压安装包：

xz -d mysql-8.0.-linux-glibc2.-x86_64.tar.xz
tar -xvf mysql-8.0.-linux-glibc2.-x86_64.tar

环境变量：

yum install -y gcc gcc-c++ make cmake automake ncurses-devel bison bison-devel tcp_wrappers-devel libaio libaio-devel perl-Data-Dumper net-tools

创建相关用户和组：

[root@localhost ~]# groupadd mysql
[root@localhost ~]# useradd -g mysql -d /home/mysql -m -p mysql mysql

创建相关目录：

[root@localhost ~]# mkdir -p /data/mysql/;chown -R mysql.mysql /data/mysql/
[root@localhost ~]# mkdir -p /data/tmp/;chown -R mysql.mysql  /data/tmp/

编辑配置文件：

[root@localhost tmp]# vim /etc/my.cnf
[root@localhost mysql]# cat /etc/my.cnf
[client]
port=
socket  = /tmp/mysql.sock

## The MySQL server
[mysqld]
port =
socket  = /tmp/mysql.sock
user = mysql
skip-external-locking
skip-name-resolve
#skip-grant-tables
#skip-networking
###################################### dir
basedir=/usr/local/mysql
datadir=/data/mysql
tmpdir=/data/tmp
secure_file_priv=/data/tmp
###################################### some app
log-error=mysql.err
pid-file=/data/mysql/mysql.pid
local-infile=
event_scheduler=
federated
default-storage-engine=InnoDB
#default-time-zone= '+8:00'
log_timestamps=SYSTEM
character-set-client-handshake = FALSE
character-set-server = utf8mb4
collation-server = utf8mb4_unicode_ci
init_connect='SET NAMES utf8mb4'

#fulltext
innodb_optimize_fulltext_only
ft_min_word_len=
#ft_max_word_len
innodb_ft_min_token_size=

###################################### memory allocate and myisam configure
max_connections=
max_connect_errors=

key_buffer_size = 16M
max_allowed_packet = 16M
table_open_cache =
sort_buffer_size = 2M
read_buffer_size = 2M
read_rnd_buffer_size = 2M
join_buffer_size=2M
myisam_sort_buffer_size = 4M
#net_buffer_length = 2M
thread_cache_size = 

tmp_table_size=1G
max_heap_table_size=1G

#thread_concurrency =
###################################### replication
server-id =
log-bin=mysql-bin
binlog_format=mixed
max_binlog_size=1G
log_slave_updates=true
log_bin_trust_function_creators=true
binlog_expire_logs_seconds= #binlog过期时间，单位秒
replicate-ignore-db=mysql
replicate-ignore-db=test
replicate-ignore-db=information_schema
replicate-ignore-db=performance_schema
replicate-wild-ignore-table=mysql.%
replicate-wild-ignore-table=test.%
replicate-wild-ignore-table=information_schema.%
replicate-wild-ignore-table=performance_schema.%

lower_case_table_names =
#read_only=
master_info_repository=TABLE
relay_log_info_repository=TABLE

###################################### slow-query
long_query_time=
slow_query_log=
slow_query_log_file=/data/mysql/slow-query.log
interactive_timeout=
wait_timeout=

###################################### innodb configure
innodb_file_per_table

innodb_data_home_dir = /data/mysql
innodb_log_group_home_dir = /data/mysql
innodb_buffer_pool_size =4G
innodb_log_file_size = 1G
innodb_log_files_in_group =
innodb_log_buffer_size = 32M
innodb_flush_log_at_trx_commit =
sync_binlog=
sql-mode="STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO"
##########################################
[mysqldump]
quick
max_allowed_packet = 16M

[mysql]
no-auto-rehash
default-character-set = utf8mb4
prompt=\\U \\h \\R:\\m:\\s \\d>

[myisamchk]
key_buffer_size = 20M
sort_buffer_size = 20M
read_buffer = 2M
write_buffer = 2M

[mysqlhotcopy]
interactive-timeout

根目录：

[root@localhost ~]# mv mysql-8.0.-linux-glibc2.-x86_64 /usr/local/mysql
[root@localhost ~]# chown -R mysql.mysql /usr/local/mysql

进行初始化，默认密码为空：

[root@localhost ~]# /usr/local/mysql/bin/mysqld  --initialize-insecure --basedir=/usr/local/mysql --datadir=/data/mysql/ --user=mysql

查看日志有没有报错：

[root@localhost ~]# cat /data/mysql/mysql.err
--20T15::46.156633+:  [System] [MY-] [Server] /usr/local/mysql/bin/mysqld (mysqld 8.0.) initializing of server in progress as process 

--20T15::31.118120+:  [Warning] [MY-] [Server] root@localhost is created with an empty password ! Please consider switching off the --initialize-insecure option.

环境变量与开机自启：

[root@localhost mysql]# vim /etc/profile
#在最后添加
export MYSQL_HOME=/usr/local/mysql
PATH=$PATH:$MYSQL_HOME/bin/
[root@localhost mysql]# source /etc/profile

　[root@localhost mysql]# cd /usr/local/mysql
　[root@localhost mysql]# cp -f support-files/mysql.server /etc/init.d/mysqld

　[root@localhost mysql]# chmod 755 /etc/init.d/mysqld

　[root@localhost mysql]# chkconfig --add mysqld

　[root@localhost mysql]# chkconfig mysqld on

启动数据库：

[root@localhost mysql]# /etc/init.d/mysqld start

修改密码与创建用户，8.0已取消grant权限自动创建用户，要用create user创建用户再用grant赋予权限：

[root@localhost ~]# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is
Server version: 8.0. MySQL Community Server - GPL

Copyright (c) , , Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
root@localhost localhost :: (none)>ALTER USER 'root'@'localhost' IDENTIFIED BY 'password';
Query OK,  rows affected (0.01 sec)
root@localhost localhost :: (none)>CREATE USER ceshi@'localhost' IDENTIFIED BY 'password';
Query OK,  rows affected (0.01 sec)

root@localhost localhost :: (none)>grant SELECT on *.* to 'ceshi'@'localhost';
Query OK,  rows affected,  warning (0.00 sec)

root@localhost localhost :: (none)>show grants for ceshi@localhost;
+--------------------------------------------+
| Grants for ceshi@localhost                 |
+--------------------------------------------+
| GRANT SELECT ON *.* TO `ceshi`@`localhost` |
+--------------------------------------------+
 row in set (0.00 sec)