一，檢查環境
1，檢查Linux環境是否已經安裝了MySQL
2，卸載
3，再次檢查發現已被刪除，並檢查還有沒有其他的參與文件
4，將相關的文件刪除掉。至此環境已經清理乾淨。
二，下載安裝包並安裝
1.下載mysql-8.0.13-linux-glibc2.12-x86_64.tar.xz的安裝包
2.解壓mysql-8.0.13-linux-glibc2.12-x86_64.tar.xz
# tar -xvf mysql-8.0.13-linux-glibc2.12-x86_64.tar.xz
3.將解壓的文件重命名mysql，並移動到/usr/local目錄下
-
# mv mysql-8.0.13-linux-glibc2.12-x86_64 mysql -
# mv mysql /usr/local/
4.進入到/usr/local目錄下，創建用戶和用戶組並授權
-
# cd /usr/local/ -
# groupadd mysql -
# useradd -r -g mysql mysql -
# cd mysql/ #注意：進入mysql文件下授權所有的文件 -
# chown -R mysql:mysql ./
5.再/usr/local/mysql目錄下，創建data文件夾
# mkdir data
6..初始化數據庫，並會自動生成隨機密碼，記下等下登陸要用
# bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data
7.修改/usr/local/mysql當前目錄得用戶
-
# chown -R root:root ./ -
# chown -R mysql:mysql data
8.# cp support-files/my-default.cnf /etc/my.cnf
複製過去，其實也就是空白頁，一開始沒有my-default.cnf這個文件，可以用# touch my-default.cnf命令創建一個，並配置權限
# chmod 777 ./my-default.cnf
-
# cd support-files/ -
# touch my-default.cnf -
# chmod 777 ./my-default.cnf -
# cd ../ -
# cp support-files/my-default.cnf /etc/my.cnf
9.配置my.cnf
-
# vim /etc/my.cnf -
[mysqld] -
-
# Remove leading # and set to the amount of RAM for the most important data -
# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%. -
# innodb_buffer_pool_size = 128M -
-
# Remove leading # to turn on a very important data integrity option: logging -
# changes to the binary log between backups. -
# log_bin -
-
# These are commonly set, remove the # and set as required. -
basedir = /usr/local/mysql -
datadir = /usr/local/mysql/data -
socket = /tmp/mysql.sock -
log-error = /usr/local/mysql/data/error.log -
pid-file = /usr/local/mysql/data/mysql.pid -
tmpdir = /tmp -
port = 5186 -
#lower_case_table_names = 1 -
# server_id = ..... -
# socket = ..... -
#lower_case_table_names = 1 -
max_allowed_packet=32M -
default-authentication-plugin = mysql_native_password -
#lower_case_file_system = on -
#lower_case_table_names = 1 -
log_bin_trust_function_creators = ON -
# 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 -
-
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
如果後期mysql運行報錯，可以直接到log-error = /usr/local/mysql/data/error.log目錄下直接查看錯誤日誌
命令:cat /usr/local/mysql/data/error.log
10.開機自啓，進入/usr/local/mysql/support-files進行設置
-
# cd support-files/ -
# cp mysql.server /etc/init.d/mysql -
# chmod +x /etc/init.d/mysql
11.註冊服務
# chkconfig --add mysql
如果命令沒有，在需要處理chkconfig
-
# rpm -aq |grep chkconfig -
# export PATH=/sbin:$PATH -
# chkconfig -
# echo $PATH -
# PATH="$PATH":/sbin -
# echo $PATH
12.查看是否成功
13.etc/ld.so.conf要配置路徑，不然報錯
-
# vim /etc/ld.so.conf -
添加如下內容: -
/usr/local/mysql/lib -
:q
14.配置環境變量
-
# vim /etc/profile -
# source /etc/profile -
-
添加如下內容： -
#MYSQL ENVIRONMENT -
export PATH=$PATH:/usr/local/mysql/bin:/usr/local/mysql/lib
15.登陸，這裏輸入上面第6步隨機生成得密碼，細心點輸入，沒有顯示的，登陸成功如圖所示
16.開啓Navicat遠程連接
-
# mysql -uroot -p #進入數據庫 -
> use mysql;#進入數據庫 -
> select host, user, authentication_string, plugin from user;#查看用戶信息 -
> GRANT ALL ON *.* TO 'root'@'%';#授權root用戶可以遠程登陸 -
> flush privileges;#立即生效 -
> ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY 'Kuaigui2019!';#修改root用戶密碼 -
> FLUSH PRIVILEGES;#立即生效 -
> exit;#退出 -
# service mysql restart#重啓mysql服務
17.navicat連接成功
