I installed CentOS 7 with minimal configuration (os + dev tools). I am trying to open 80 port for httpdservice, but something wrong with my iptables service ... what's wrong with it? What am I doing wrong? # ifconfig/sbin/service iptables save bash:…
http://stackoverflow.com/questions/24756240/how-can-i-use-iptables-on-centos-7 # sudo service iptables start Redirecting to /bin/systemctl start iptables.service Failed to issue method call: Unit iptables.service failed to load: No such file or direc…
iptables是Linux下不错的防火墙软件,本文主要给大家介绍下iptables的安装.规则增加和清除.开放指定端口.屏蔽指定ip和ip段等CentOS下iptables的基本应用. 一.iptables的安装 yum install iptables 如果CentOS没有默认安装iptables,则执行上述命令.如何知道系统是否有iptables呢?执行以下命令 service iptables status 如果提示 iptables:unrecognized service 则表示系统…
Greenplum 源码安装教程 作者:Arthur_Qin 禾众 Greenplum 主体以及orca ( 新一代优化器 ) 的代码以可以从 Github 上下载.如果不打算查看代码,想下载编译好的二进制版可以访问其母公司 pivotal 官网 下载,具体配置安装流程可以参考<Greenplum 安装>. 正文由此开始: [TOC] 1 Greenplum 介绍 Greenplum is built on PostgreSQL and operates as a data warehouse…