版本

• CentOS7.2 64位
• MySQL5.7.17

MySQL安裝包

• 下載地址：https://dev.mysql.com/downloads/mysql/5.7.html#downloads
• 版本選擇：Select Operating System: Linux - Generic
• 本教程使用：mysql-5.7.18-linux-glibc2.5-x86_64.tar.gz

安裝前的準備

• CentOS7.2需要安裝libaio

yum install libaio -y

開始安裝

• 解壓

tar -zxvf /data/software/mysql-5.7.17-linux-glibc2.5-x86_64.tar.gz -C /usr/local/
 

• 重命名解壓目錄

cd /usr/local
mv mysql-5.7.17-linux-glibc2.5-x86_64 mysql

• 進入mysql目錄

cd /usr/local/mysql

• 創建MySQL的data目錄

mkdir data

• 新建mysql的用戶和用戶組

groupadd mysql       #添加用戶組
useradd -r -s /sbin/nologin -g mysql mysql -d /usr/local/mysql     #新建msyql用戶禁止登錄shell
chown -R mysql.mysql /usr/local/mysql/    賦予mysql用戶目錄權限
 

• 初始化數據庫

./bin/mysql_install_db --user=mysql --basedir=/usr/local/mysql/ --datadir=/usr/local/mysql/data/

• 復制配置文件

cp -a ./support-files/my-default.cnf /etc/my.cnf

• 如果沒有 my-default.cnf，則直接編輯my.cnf文件vim /etc/my.cnf，將以下內容寫進去

[client]
port = 3306
socket = /tmp/mysql.sock
[mysqld]
port = 3306
collation_server = utf8_general_ci
character_set_server = utf8
socket = /tmp/mysql.sock
basedir = /usr/local/mysql
datadir = /usr/local/mysql/data
pid-file = /usr/local/mysql/data/mysql.pid
user = root
lower_case_table_names=1
back_log = 600
max_connections = 1000
max_connect_errors = 6000
open_files_limit = 65535
table_open_cache = 128
max_allowed_packet = 4M
binlog_cache_size = 1M
max_heap_table_size = 8M
tmp_table_size = 16M
read_buffer_size = 2M
read_rnd_buffer_size = 8M
sort_buffer_size = 8M
join_buffer_size = 8M
thread_cache_size = 8
query_cache_size = 8M
query_cache_limit = 2M
key_buffer_size = 4M
ft_min_word_len = 4
innodb_open_files = 500
innodb_buffer_pool_size = 64M
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
bulk_insert_buffer_size = 8M
myisam_sort_buffer_size = 8M
myisam_max_sort_file_size = 10G
myisam_repair_threads = 1
[mysqldump]
quick
max_allowed_packet = 16M 
[myisamchk]
key_buffer_size = 8M
sort_buffer_size = 8M
read_buffer = 4M
write_buffer = 4M
 

• 添加環境變量

vi /etc/profile # 編輯etc目錄下的profile文件
export PATH=/usr/local/mysql/bin:$PATH
source /etc/profile # 使用source命令使之配置文件生效

• 設置啟動項

systemctl enable mysql.service

• 啟動MySQL

service mysql start

初始化密碼

• 查看初始密碼

cat /root/.mysql_secret

• 修改密碼

# 登錄
mysql -u root -p # 回車後輸入初始密碼
# 修改密碼，註意替換掉命令中的密碼 your_new_password
SET PASSWORD FOR ‘root‘@localhost=PASSWORD(‘your_new_password‘);

設置開機啟動

# 將服務文件拷貝到init.d下，並重命名為mysql
cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysql
# 賦予可執行權限
chmod +x /etc/init.d/mysql
# 添加服務
chkconfig --add mysql
# 顯示服務列表
chkconfig --list
# 如果看到mysql的服務，並且3,4,5都是on的話則成功，如果是off，則鍵入
chkconfig --level 345 mysql on

遠程訪問授權

# 登錄MySQL
mysql -u root -p # 回車後輸入密碼
# 授權命令，註意替換掉命令中的密碼 root_password
GRANT ALL PRIVILEGES ON *.* TO ‘root‘@‘%‘ IDENTIFIED BY ‘root_password‘ WITH GRANT OPTION;
# 重新載入授權表
FLUSH PRIVILEGES;

CentOS7 安裝 MySQL5.7