mysql8.0.13安裝

1. 檢查是否有安裝mysql，有就刪除

rpm安裝查看：rpm -qa | grep mysql
dpkg安裝查看：dpkg-l|grep mysql
yum安裝查看：yum list installed | grep mysql
源碼安裝查看：查看是否有mysql文件

2. 下載最新版mysql

https://dev.mysql.com/downloads/mysql/
選擇Linux Generic通用版和Compressed TAR Archive壓縮源碼,選擇不登錄直接下載

3. 解壓重命名

tar -zxvf  *.tar.gz
tar -xvJf  *.tar.xz  // 通常後綴爲這個解壓
mv * mysql  // *爲文件名

4. 添加組和用戶並建立存儲文件夾

groupadd mysql  // 添加組
useradd -r -g mysql mysql  // 爲組添加用戶
mkdir /app/software/mysql_data  // 建立數據存儲文件夾

5. 初始化mysql

./bin/mysqld  --user=mysql --lower-case-table-names=1 --initialize-insecure --basedir=/app/source/mysql --datadir=/app/software/mysql_data
# 使用mysql用戶權限進行初始化，並設置數據讀寫忽略大小寫，初始化密碼爲空，和肯定初始化mysql文件夾於存儲文件夾
# 如報錯libaio.so.1, 則：yum install libaio

6. 修改配置/etc/my.cnf

[mysqld]
server-id                      = 1
user　　　　　　　　　　　　　　　　= mysql #指定用戶，使用配置啓動安全需求
port                           = 3306
mysqlx_port                    = 33060
mysqlx_socket                  = /tmp/mysqlx.sock
datadir                        = /app/software/mysql_data
socket                         = /tmp/mysql.sock
pid-file                       = /tmp/mysqld.pid
log-error                      = error.log #默認mysql_data目錄
slow-query-log                 = 1
slow-query-log-file            = slow.log
long_query_time                = 0.2
log-bin                        = bin.log
relay-log                      = relay.log
binlog_format                  = ROW
relay_log_recovery             = 1
character-set-client-handshake = FALSE
character-set-server           = utf8mb4
collation-server               = utf8mb4_unicode_ci
init_connect                   = 'SET NAMES utf8mb4'
innodb_buffer_pool_size        = 1G
join_buffer_size               = 128M
sort_buffer_size               = 2M
read_rnd_buffer_size           = 2M
log_timestamps                 = SYSTEM
lower_case_table_names         = 1
default-authentication-plugin  = mysql_native_password

7. 更改權限，添加服務

chown -R mysql:mysql /app/software/mysql_data #修改全部者
chmod -R 777 /app/software/mysql_data #增長權限

./support-files/mysql.server文件中修改：
basedir=/app/source/mysql
datadir=/app/software/mysql_data

cp -a ./support-files/mysql.server  /etc/init.d/mysql  #添加服務

service mysql start/stop/restart #測試啓動，如報錯，查看error.log,根據錯誤提示解決

8. 設置全局

修改/etc/profile文件，在export PATH...上面：
#set for mysql
export MYSQL_HOME=/app/mysql
export PATH=$PATH:$MYSQL_HOME/bin

刷新配置source /etc/profile

9. 開機啓動

# 設置開機啓動
touch /usr/lib/systemd/system/mysql.service

[Unit]
Description=mysql
After=network.target
After=syslog.target

[Service]
User=mysql
Group=mysql
ExecStart=/app/source/mysql/bin/mysqld --defaults-file=/etc/my.cnf
LimitNOFILE = 5000
#Restart=on-failure
#RestartPreventExitStatus=1
#PrivateTmp=false

[Install]
WantedBy=multi-user.target

systemctl start/stop/restart mysql.service #啓動服務
systemctl enable mysql.service #設爲開機啓動

 10 新增用戶和權限

use mysql;

create user username identified by 'password';

select host, user from user;

show grants for username;

grant all on 數據庫.* to 'username'@'%';

flush privileges;