#CentOS安装JDK
首先卸载openJDk 第一步:查看Linux自带的JDK是否已安装 (卸载centOS已安装的1.4)
安装好的CentOS会自带OpenJdk,用命令 java -version ,会有下面的信息:
java version "1.6.0" OpenJDK Runtime Environment (build 1.6.0-b09) OpenJDK 64-Bit Server VM (build 1.6.0-b09, mixed mode)
最好还是先卸载掉openjdk,在安装sun公司的jdk.
先查看 rpm -qa | grep java
显示如下信息:
java-1.4.2-gcj-compat-1.4.2.0-40jpp.115 java-1.6.0-openjdk-1.6.0.0-1.7.b09.el5
卸载:
rpm -e --nodeps java-1.4.2-gcj-compat-1.4.2.0-40jpp.115 rpm -e --nodeps java-1.6.0-openjdk-1.6.0.0-1.7.b09.el5
1.在/usr/目录下创建java目录
[root@localhost ~]# mkdir/usr/java [root@localhost ~]# cd /usr/java
2.下载,然后解压
[root@localhost java]# curl -O http://download.oracle.com/otn-pub/java/jdk/7u79-b15/jdk-7u79-linux-x64.tar.gz [root@localhost java]# tar -zxvf jdk-7u79-linux-x64.tar.gz
3.设置环境变量
[root@localhost java]# vi /etc/profile
添加如下内容:
JAVA_HOME=/usr/java/jdk1.7.0_79 JRE_HOME=/usr/java/jdk1.7.0_79/jre CLASS_PATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JRE_HOME/lib PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin export JAVA_HOME JRE_HOME CLASS_PATH PATH
让修改生效:
[root@localhost java]# source /etc/profile
4.验证
[root@localhost java]# java -version java version "1.7.0_79" Java(TM) SE Runtime Environment (build 1.7.0_79-b15) Java HotSpot(TM) 64-Bit Server VM (build 24.79-b02, mixed mode)
#centOS装tomcat
[root@admin local]# cd /usr/local
[root@admin local]# wget http://apache.fayea.com/apache-mirror/tomcat/tomcat-7/v7.0.57/bin/apache-tomcat-7.0.57.tar.gz
[root@admin local]# tar -zxv -f apache-tomcat-7.0.29.tar.gz // 解压压缩包
[root@admin local]# rm -rf apache-tomcat-7.0.29.tar.gz // 删除压缩包
[root@admin local]# mv apache-tomcat-7.0.29 tomcat
#centos6.5关闭防火墙 关闭命令: service iptables stop 永久关闭防火墙:chkconfig iptables off
两个命令同时运行,运行完成后查看防火墙关闭状态 service iptables status
#centos7关闭防火墙 systemctl stop firewalld.service #停止 systemctl disable firewalld.service #禁用 之前的版本: service iptables stop #停止 chkconfig iptables off #禁用
#centOS装mysql数据库 http://www.cnblogs.com/xiaoluo501395377/archive/2013/04/07/3003278.html