新centos6 静态ip 放行端口 hosts主机名 jdk环境变量

0 jdk 环境变量　

vi  /etc/profile

source /etc/profile 刷新环境变量

在尾部增加如下代码：

#JDK全局环境变量配置
export JAVA_HOME=/usr/local/jdk/jdk1.7.0_75
export CLASSPATH=$:CLASSPATH:$JAVA_HOME/lib/
export PATH=$PATH:$JAVA_HOME/bin

1.静态IP　

修改下列项的值

vim /etc/sysconfig/network-scripts/ifcfg-eth0

BOOTPROTO="static"
IPV6INIT="no"
NM_CONTROLLED="yes"
ONBOOT="yes"

IPADDR="192.168.177.130"
NETMASK="255.255.255.0"
GATEWAY="192.168.177.2" #Wangguan
#NETWORK="192.168.177.0" #Ziwang IP
#BCAST="192.168.177.255"
#BROADCAST="192.168.177.255"
DNS1="114.114.114.114"

如果 service network restart 失败

则依次运行 即可

chkconfig NetWorkManager off
chkconfig network on
service NetworkManager stop
service network start

2.修改network

vi /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=trsr01

3 放行端口

　　

列出所有端口

 

netstat -ntlp

 

1、开启端口（以80端口为例）

 

      方法一：

 

         /sbin/iptables -I INPUT -p tcp --dport 80 -j ACCEPT   写入修改

 

         /etc/init.d/iptables save   保存修改

 

        service iptables restart    重启防火墙，修改生效

 

       方法二：

 

       vi /etc/sysconfig/iptables  打开配置文件加入如下语句:

 

       -A INPUT -p tcp -m state --state NEW -m tcp --dport 80 -j ACCEPT   重启防火墙，修改完成

 

 

 

2、关闭端口

 

     方法一：

 

         /sbin/iptables -I INPUT -p tcp --dport 80 -j DROP   写入修改

 

         /etc/init.d/iptables save   保存修改

 

        service iptables restart    重启防火墙，修改生效

 

       方法二：

 

       vi /etc/sysconfig/iptables  打开配置文件加入如下语句:

 

       -A INPUT -p tcp -m state --state NEW -m tcp --dport 80 -j DROP   重启防火墙，修改完成

 

 

 

3、查看端口状态

 

      /etc/init.d/iptables status

 

 

4.关闭防火墙

chkconfig –level 35 iptables off #此方法源自网络，未实验，安全考虑拒绝使用此方法

4 centos6 yum换源

　　vim /etc/yum.repos.d/CentOS-Base.repo

　　之后 yum clean all    yum makecache

# CentOS-Base.repo
#
# The mirror system uses the connecting IP address of the client and the
# update status of each mirror to pick mirrors that are updated to and
# geographically close to the client.  You should use this for CentOS updates
# unless you are manually picking other mirrors.
#
# If the mirrorlist= does not work for you, as a fall back you can try the
# remarked out baseurl= line instead.
#
#

[base]
name=CentOS-6.10 - Base - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos-vault/6.10/os/$basearch/
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos-vault/RPM-GPG-KEY-CentOS-6

#released updates
[updates]
name=CentOS-6.10 - Updates - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos-vault/6.10/updates/$basearch/
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos-vault/RPM-GPG-KEY-CentOS-6

#additional packages that may be useful
[extras]
name=CentOS-6.10 - Extras - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos-vault/6.10/extras/$basearch/
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos-vault/RPM-GPG-KEY-CentOS-6

#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-6.10 - Plus - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos-vault/6.10/centosplus/$basearch/
gpgcheck=1
enabled=0
gpgkey=http://mirrors.aliyun.com/centos-vault/RPM-GPG-KEY-CentOS-6

#contrib - packages by Centos Users
[contrib]
name=CentOS-6.10 - Contrib - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos-vault/6.10/contrib/$basearch/
gpgcheck=1
enabled=0
gpgkey=http://mirrors.aliyun.com/centos-vault/RPM-GPG-KEY-CentOS-6

　　

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