• 1.jdk安装
• 2.Tomcat安装
• 3.Mysql安装

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

参考: https://www.cnblogs.com/brianzhu/p/8575243.html