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刪除已經安裝版本

yum list installed mysql [root@localhost ~]# yum list installed mysql Loaded plugins: fastestmirror, refresh-packagekit, security Loading mirror speeds from cached hostfile * base: mirrors.cn99.com * extras: mirrors.cn99.com * updates: mirrors.cn99.com Installed Packages mysql.x86_64 yum remove mysql.x86_64 1.下載安裝 wget https://cdn.mysql.com//Downloads/MySQL-5.7/mysql-5.7.20-linux-glibc2.12-x86_64.tar.gz (axel多線程下載: axel -n 10 https://cdn.mysql.com//Downloads/MySQL-5.7/mysql-5.7.20-linux-glibc2.12-x86_64.tar.gz ) tar -xvzf mysql-5.7.20-linux-glibc2.12-x86_64.tar.gz mv mysql-5.7.20-linux-glibc2.12-x86_64 /usr/local/mysql 添加用戶及用戶分組、目錄權限 groupadd mysql useradd mysql -g mysql cd mysql chown -R mysql . chgrp -R mysql . 安裝依賴庫 yum install libaio yum install -y libnuma.so.1 安裝數據庫（數據庫初始化） cd /usr/local/mysql mkdir data cd /usr/local/mysql/bin ./mysql_install_db --user=mysql --basedir=/usr/local/mysql/ --datadir=/usr/local/mysql/data -------註意,數據存儲目錄，因為/目錄空間很小不夠使用，所以我把數據存儲到 /data/mysql57下了,即 mkdir /data/mysql57 chown -R mysql /data/mysql57 chgrp -R mysql /data/mysql57 cd /usr/local/mysql/bin ./mysql_install_db --user=mysql --basedir=/usr/local/mysql/ --datadir=/data/mysql57 這裏可能會遇到的問題： Installing MySQL system tables..../bin/mysqld: error while loading shared libraries: libnuma.so.1: cannot open shared object file: No such file or directory 原因：是用yum 安裝的libnuma.so.1，安裝時默認安裝的是32的，但db需要的是64位的 解決辦法：1.如果已經安裝了libnuma.so.1，先yum remove libnuma.so.1；安裝 yum -y install numactl.x86_64 2.啟動登陸 cd /usr/local/mysql/support-files ./mysql.server start 登錄mysql，此版本最新版不許空密碼登錄，實際上有個初始化密碼保存在/root/.mysql_secret這個文件裏面，用這個密碼第一次登錄後，再修改密碼。因此先cat查看下初始化密碼（隨機的，每次安裝看到的密碼都不一樣）： [root@localhost ~]# cat /root/.mysql_secret cd /usr/local/mysql/bin ./mysql -uroot -pI+0tKc3(kDS/ 改mysql的root密碼，新密碼在此為‘leizm‘ mysql> set password=password(‘12root‘); Query OK, 0 rows affected, 1 warning (0.00 sec) GRANT ALL PRIVILEGES ON *.* TO root@‘%‘ identified by ‘123456a‘; flush privileges; 3. 添加系統服務 shell> cp support-files/mysql.server /etc/init.d/mysqldshell> service mysqld start http://blog.51cto.com/pengjc/1861088 如果啟動過程或mysql客戶端連接有問題配置 my.cnf vi /etc/my.cnf [mysqld] bind-address=0.0.0.0 #mysql安裝根目錄 basedir = /usr/local/mysql #datadir=/var/lib/mysql datadir=/data/mysql57 #socket=/var/lib/mysql/mysql.sock socket=/data/mysql57/mysql.sock user=mysql # Disabling symbolic-links is recommended to prevent assorted security risks symbolic-links=0 #Port number to use for connections. port=15024 #innodb_buffer_pool_size=256M max_allowed_packet = 32M #query_cache_size = 128M max_connections=300 log-bin=mysql-bin server-id=10632 [client] socket =/data/mysql57/mysql.sock [mysqld_safe] log-error=/var/log/mysqld.log pid-file=/var/run/mysqld/mysqld.pid MySql5.7 配置文件 my.cnf 設置 http://www.voidcn.com/article/p-zrikccdi-hr.html

mysql安裝-CentOS6下解壓安裝mysql-5.7.20-linux-glibc2.12-x86_64.tar.gz