1.jdk安装
官网下载
https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html 下载linux版本jdk-xxx.tar.gz
上传并解压 tar -zxf jdk-xxx.tar.gz
配置环境变量 vi /etc/profile ,复制解压后jdk目录,示例:
JAVA_HOME= /usr/soft/1.8.0_191
PATH=$PATH:$JAVA_HOME/bin
export PATH USER LOGNAME MAIL HOSTNAME HISTSIZE HISTCONTROL
刷新配置 source /etc/profile, 查看是否安装成功java -version
java version "1.8.0_191"
Java(TM) SE Runtime Environment (build 1.8.0_191-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.191-b12, mixed mode)2.Tomcat安装
下载tomcat https://tomcat.apache.org/download-80.cgi
上传并解压 tar apache-tomcat-xx.tar.gz
进入bin目录 cd ./bin, 启动tomcat ./startup.sh
进入logs目录查看日志 tail -f catalina.out
关闭防火墙, 就可以通过浏览器访问了(ip:8080)
service iptables status查看防火墙状态service iptables stop关闭防火墙
3.Mysql安装
环境: CentOS6
如果已经安装过先卸载,查看是否安装rpm -qa | grep mysql, 卸载 yum –y remove 包名 或者 rpm -e --nodeps 包名
安装mysqlyum -y install mysql-server mysql mysql-devel
- 启动：
service mysqld start - 查看：
ps aux | grep mysql - 停止：
service mysqld stop - 重启：
service mysqld restart
创建root管理员 mysqladmin -u root password 123456
登陆 mysql -uroot -p123456
允许其他客户端访问,先关闭防火墙.然后在sql命令界面执行以下操作
mysql> grant all privileges on *.* to 'root'@'%' identified by '123456' with grant option;
Query OK, 0 rows affected (0.01 sec)
mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.02 sec)环境: CentOS7
下载
wget -i -c http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm
安装
yum -y install mysql57-community-release-el7-10.noarch.rpm
yum -y install mysql-community-server
启动
systemctl start mysqld.service
查看状态
systemctl status mysqld.service
查看初始密码
grep "password" /var/log/mysqld.log
grep "password" /var/log/mysqld.log
1 [Note] A temporary password is generated for root@localhost: DcGSI?xMp7Dt回车后会提示输入密码
mysql -uroot -p
修改密码安全策略,否则简单密码如root或者123456不能用
set global validate_password_policy=0;
set global validate_password_length=1;
修改密码
ALTER USER 'root'@'localhost' IDENTIFIED BY 'new password';
授权可视化工具连接
grant all on *.* to root@'%' identified by '数据库密码';
关闭防火墙