Linux 系统：第十章：服务器环境搭建，附 Java 面经

备份：cp profile profile.bak

修改：vim profile

大写 G，进入文件末尾，输入 i 进行修改模式，末尾添加以下配置：

JAVA_HOME=/opt/jdk1.8.0_152

PATH=$JAV{A}_{H}OME/bin:$PATH

export JAVA_HOME PATH

然后保存退出：按 Esc+：wq

执行当前连接刚刚配置的脚本文件使配置文件生效：source /etc/profile???? 或者 reboot 重启

查看 jdk 版本：java -version

java version "1.8.0_152"

Java(TM) SE Runtime Environment (build 1.8.0_152-b16)

Java HotSpot(TM) 64-Bit Server VM (build 25.152-b16, mixed mode)

查看：path 路径：echo $PATH

/opt/jdk1.8.0_152/bin:/opt/jdk1.8.0_152/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin

查看：JAVA_HOME 路径：echo $JAVA_HOME

/opt/jdk1.8.0_152

Tomcat 安装与配置

进入 opt 目录：cd /opt

在 opt 目录下上传 apache-tomcat-8.5.24.tar.gz

解压：?tar -zxvf apache-tomcat-8.5.24.tar.gz

启动 tomcat： /opt/apache-tomcat-8.5.24/bin/startup.sh

如果报错进入 logs 目录查看：cd /opt/apache-tomcat-8.5.24/logs

查看日志：less catalina.out

MySQL 的安装与配置

进入 opt 目录：cd /opt

在 opt 目录下上传 MySQL-server-5.5.52-1.el6.x86_64.rpm 和 MySQL-client-5.5.52-1.el6.x86_64.rpm

忽略依赖关系执行删除：rpm -e --nodeps mariadb-libs-1:5.5.56-2.el7.x86_64

安装服务端：rpm -ivh /opt/MySQL-server-5.5.52-1.el6.x86_64.rpm

安装客户端：rpm -ivh /opt/MySQL-client-5.5.52-1.el6.x86_64.rpm

查看版本：mysqladmin --version

mysqladmin? Ver 8.42 Distrib 5.5.52, for Linux on x86_64

启动 MySQL 服务：systemctl start mysql.service

查看服务状态：systemctl status mysql.service

查看端口：netstat -anp|grep 3306

查看 mysql 运行的进程：ps -ef|grep mysql|grep -v grep

设置 root 用户和密码：mysqladmin -u root password

New password:

Confirm new password:

登录 mysql：mysql -u root -p

Enter password:

Welcome to the MySQL monitor.? Commands end with ; or \g.

Your MySQL connection id is 3

Server version: 5.5.52 MySQL Community Server (GPL)

Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql>

查看数据库：show databases;

使用 test 数据库：user test;

查看表：show tables;

退出：exit；

然后去 windows 的 sqlYog 连接，主机改为 linux 连接：192.168.134.100，用户名：root，密码：root

测试连接不上，linux 中查看防火墙：systemctl status firewalld.service

● firewalld.service - firewalld - dynamic firewall daemon

Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)

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Active: inactive (dead)

Docs: man:firewalld(1)

8 月 12 07:32:47 rich systemd[1]: Starting firewalld - dynamic firewall daemon...