安装jdk软件
1.上传软件
使用CRT等客户端远程上传jdk-8u65-linux-x64.tar.gz文件到/export/software目录下
2.解压软件
[root@node1 ~]# cd /export/software/ [root@node1 software]# tar -zxvf jdk-8u65-linux-x64.tar.gz -C /export/server/
3.添加环境变量
[root@node1 software]# vim /etc/profile
# 把如下内容复制到profile文件的最后,注意:记得保存并退出wq # 小技巧 : 按G + o快速到文件末尾 export JAVA_HOME=/export/server/jdk1.8.0_65 export PATH=$PATH:$JAVA_HOME/bin export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
4.重新加载文件(配置生效)
[root@node1 software]# source /etc/profile
5.检查jdk版本
[root@node1 software]# java -version
安装mysql软件
0.卸载mariadb-libs
centos7内部集成了mariadb,而安装mysql的话会和mariadb的文件冲突,所以需要先卸载掉mariadb
[root@node1 software]# rpm -e --nodeps mariadb-libs
1.上传软件
使用CRT等客户端远程上传mysql文件文件到/export/software目录下
2.解压软件
[root@node1 software]# mkdir /export/server/mysql5.7 [root@node1 software]# cd /export/software/mysql\ 5.7.29/ [root@node1 mysql 5.7.29]# tar -xvf mysql-5.7.29-1.el7.x86_64.rpm-bundle.tar -C /export/server/mysql5.7
3.安装mysql
[root@node1 mysql 5.7.29]# cd /export/server/mysql5.7/ [root@node1 mysql5.7]# rpm -ivh mysql-community-common-5.7.29-1.el7.x86_64.rpm mysql-community-libs-5.7.29-1.el7.x86_64.rpm mysql-community-client-5.7.29-1.el7.x86_64.rpm mysql-community-server-5.7.29-1.el7.x86_64.rpm
4.初始化服务
[root@node1 mysql5.7]# mysqld --initialize
5.修改文件用户和组
[root@node1 mysql5.7]# chown mysql:mysql /var/lib/mysql -R
6.启动mysql服务
[root@node1 mysql5.7]# systemctl start mysqld.service
7.设置开启自动启动
[root@node1 mysql5.7]# systemctl enable mysqld.service
8.查看mysql状态
[root@node1 mysql5.7]# systemctl status mysqld
9.登录mysql
[root@node1 mysql5.7]# Pass=$(grep 'A temporary password' /var/log/mysqld.log |awk '{print $NF}') [root@node1 mysql5.7]# mysql -uroot -p"$Pass"
10.修改root密码且授权远程访问
mysql> alter user user() identified by "123456"; mysql> use mysql; mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '123456' WITH GRANT OPTION; mysql> FLUSH PRIVILEGES; mysql> exit;
卸载mysql软件
#关闭mysql服务 [root@binzi ~]# systemctl stop mysqld.service #查找安装mysql的rpm包 [root@binzi ~]# rpm -qa | grep -i mysql #卸载 [root@binzi ~]# yum remove mysql-community-libs-5.7.29-1.el7.x86_64 mysql-community-common-5.7.29-1.el7.x86_64 mysql-community-client-5.7.29-1.el7.x86_64 mysql-community-server-5.7.29-1.el7.x86_64 #查看是否卸载干净 [root@binzi ~]# rpm -qa | grep -i mysql #查找mysql相关目录 删除 [root@binzi ~]# find / -name mysql [root@binzi ~]# rm -rf /var/lib/mysql [root@binzi ~]# rm -rf /var/lib/mysql/mysql [root@binzi ~]# rm -rf /usr/share/mysql #删除默认配置和日志 [root@binzi ~]# rm -rf /etc/my.cnf [root@binzi ~]# rm -rf /var/log/mysqld.log