Linux(centos_7)上安裝MySql5.7
阿新 • • 發佈：2018-11-04
使用wget從官網下載tar包
wget https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.22-linux-glibc2.12-x86_64.tar.gz
將MySql安裝至/usr/local/mysql目錄
解壓安裝包
tar -xvf mysql-5.7.22-linux-glibc2.12-x86_64.tar.gz
移動
mv mysql-5.7.22-linux-glibc2.12-x86_64 /usr/local/
重新命名
mv /usr/local/mysql-5.7.22-linux-glibc2.12-x86_64 /usr/local/mysql
新建data目錄
mkdir /usr/local/mysql/data
新建mysql使用者、mysql使用者組
mysql使用者組
groupadd mysql
mysql使用者
useradd mysql -g mysql
- 將/usr/local/mysql的所有者及所屬組改為mysql
chown -R mysql.mysql /usr/local/mysql
-
配置
/usr/local/mysql/bin/mysql_install_db --user=mysql --basedir=/usr/local/mysql/ --datadir=/usr/local/mysql/data
出現如上圖所示錯誤
則輸入如下命令
/usr/local/mysql/bin/mysqld --user=mysql --basedir=/usr/local/mysql/ --datadir=/usr/local/mysql/data --initialize
出現如下所示錯誤
/usr/local/mysql/bin/mysqld: error while loading shared libraries: libaio.so.1: cannot open shared object file: No such file or directory
則執行以下命令：
yum -y install numactl
得出如下結果後繼續安裝，輸入如下命令
/usr/local/mysql/bin/mysqld --user=mysql --basedir=/usr/local/mysql/ --datadir=/usr/local/mysql/data --initialize
繼續出現如下所示錯誤
/usr/local/mysql/bin/mysqld: error while loading shared libraries: libaio.so.1: cannot open shared object file: No such file or directory
則執行以下命令：
yum install -y libaio
完成後繼續執行
/usr/local/mysql/bin/mysqld --user=mysql --basedir=/usr/local/mysql/ --datadir=/usr/local/mysql/data --initialize
編輯配置檔案
vi /etc/my.cnf
修改前
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
# Settings user and group are ignored when systemd is used.
# If you need to run mysqld under a different user or group,
# customize your systemd unit file for mariadb according to the
# instructions in http://fedoraproject.org/wiki/Systemd
[mysqld_safe]
log-error=/var/log/mariadb/mariadb.log
pid-file=/var/run/mariadb/mariadb.pid
#
# include all files from the config directory
#
!includedir /etc/my.cnf.d
修改後
[mysqld]
datadir=/usr/local/mysql/data
basedir=/usr/local/mysql
socket=/tmp/mysql.sock
user=mysql
port=3306
character-set-server=utf8
# 取消密碼驗證
skip-grant-tables
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
# Settings user and group are ignored when systemd is used.
# If you need to run mysqld under a different user or group,
# customize your systemd unit file for mariadb according to the
# instructions in http://fedoraproject.org/wiki/Systemd
[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
#
# include all files from the config directory
#
開啟服務
將mysql加入服務
cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysql
開機自啟
chkconfig mysql on
開啟
service mysql start
- 設定密碼
登入（由於/etc/my.cnf中設定了取消密碼驗證，所以此處密碼任意）
/usr/local/mysql/bin/mysql -u root -p
操作mysql資料庫
>>use mysql;
修改密碼
>>update user set authentication_string=password('你的密碼') where user='root';
>>flush privileges;
>>exit;
將/etc/my.cnf中的skip-grant-tables刪除
登入再次設定密碼
如果出現操作不了資料庫的狀況，就再次設定skip-grant-tables，再次設定密碼
/usr/local/mysql/bin/mysql -u root -p
>>ALTER USER 'root'@'localhost' IDENTIFIED BY '修改後的密碼';
>>exit;
允許遠端連線
/usr/local/mysql/bin/mysql -u root -p
>>use mysql;
>>update user set host='%' where user = 'root';
>>flush privileges;
>>eixt;
新增快捷方式
ln -s /usr/local/mysql/bin/mysql /usr/bin
注意：本Linux伺服器是在阿里雲的伺服器，遠端訪問資料庫時，需要在阿里雲上開放埠