RHEL

I got a RHEL 7.1 instance on amazon aws, now i am trying to install softwares using yum, but even very common softwares aren't available. For example, $ sudo yum install lynx Loaded plugins: amazon-id, rhui-lb No package lynx available. Error: Nothing to do I am new to linux and yum . What's to be done so I can install softwares easily using yum . Should I be adding repos? Here, I tried doing what's said here -> Top 5 Yum Repositories for CentOS/RHEL 7/6/5 and Fedora , and here -> Install RepoForge (RPMForge) Repository On RHEL, CentOS, Scientific Linux 7/6.x/5.x/4.x but to no use. Appreciate

一、 Linux kernel官网 https://www.kernel.org There are several main categories into which kernel releases may fall: Prepatch Prepatch or "RC" kernels are mainline kernel pre-releases that are mostly aimed at other kernel developers and Linux enthusiasts. They must be compiled from source and usually contain new features that must be tested before they can be put into a stable release. Prepatch kernels are maintained and released by Linus Torvalds. Mainline Mainline tree is maintained by Linus Torvalds. It's the tree where all new features are introduced and where all the exciting new development

I am doing data format conversion between POJO to CSV and vice versa. In this while converting CSV to Object file(Unmarshalling) i am getting illegal argument exception for int data type. Only for string its working fine. Below is my POJO @CsvRecord(separator="//|",crlf="UNIX",generateHeaderColumns=false) public class EmployeeVO implements Serializable{ private static final long serialVersionUID = -663135747565879908L; @DataField(pos=1) private String name; @DataField(pos=3) private Integer age; @DataField(pos=2) private String grade; // getter setter } csv data sumit|4th standrad|22 the above

准备工作: 记录两个node的当前信息: ifconfig -a 如果db和ap的启动顺序有固定要求,需要检查相应的启动脚本(/sysadmin/hacmp下) lsvg -o df -k 测试: 1.网卡故障: a.拔掉service网卡网线: IP地址由standby网卡接管,应用无影响 ifconfig -a(standby网卡IP改变) b.插回service网卡网线: 不自动发生接管 c.拔掉standby网卡网线: IP地址由原service网卡接管,应用无影响 ifconfig -a(原service网卡IP恢复) d.插回standby网卡网线: 不自动发生接管 e.将service,standby网卡网线同时拔掉: node2接管node1的服务及IP 在node2上: tail -f /tmp/hacmp.out (可查看hacmp服务日志) ifconfig -a (查看node1的serviceIP是否已切换) lsvg -o (查看node1的VG是否都已varyon) df -k (查看node1的文件系统是否都已mount上) ps -ef |grep * (检查node1的服务进程是否都已启动) 在node1上: 启动hacmp smit clstart f.对node2执行相同操作. 2.主机故障: (应为非正常关机,但为保护server硬件

I am currently attempting to get neo4j installed properly on an EC2 instance with RHEL. Currently I can not hit the server on port 7474 from a browser to see the neo4j webadmin or browser. As of right now I can successfully access localhost:7474 which leads me to believe it is some level of access issue with remote connections. What I have done so far: Installed Oracle Java 1.7 on the EC2 instance Installed neo4j-community-2.0.1 Added org.neo4j.server.webserver.address=0.0.0.0 to the neo4j-server.properties Added a custom TCP rule in EC2 UI for port 7474 allowing 0.0.0.0/0 Added 7474 to

Rsyslog 是一个自由开源的日志记录程序，在 CentOS 8 和 RHEL 8 系统上默认可用。它提供了一种从客户端节点到单个中央服务器的“集中日志”的简单有效的方法。日志集中化有两个好处。首先，它简化了日志查看，因为系统管理员可以在一个中心节点查看远程服务器的所有日志，而无需登录每个客户端系统来检查日志。 如果需要监视多台服务器，这将非常有用，其次，如果远程客户端崩溃，你不用担心丢失日志，因为所有日志都将保存在中心的 Rsyslog 服务器上。rsyslog 取代了仅支持 UDP 协议的 syslog。它以优异的功能扩展了基本的 syslog 协议，例如在传输日志时支持 UDP 和 TCP 协议，增强的过滤功能以及灵活的配置选项。让我们来探讨如何在 CentOS 8 / RHEL 8 系统中配置 Rsyslog 服务器。 预先条件 我们将搭建以下实验环境来测试集中式日志记录过程： Rsyslog 服务器 CentOS 8 Minimal IP 地址： 10.128.0.47 客户端系统 RHEL 8 Minimal IP 地址： 10.128.0.48 通过上面的设置，我们将演示如何设置 Rsyslog 服务器，然后配置客户端系统以将日志发送到 Rsyslog 服务器进行监视。 让我们开始！ 在 CentOS 8 上配置 Rsyslog 服务器 默认情况下，Rsyslog

After years of being away from Ruby, I'm back full-force and have just cut my first gem, which includes an executable. Everything works like a charm. The problem I am facing, however, is that I ALSO have a startup script (not part of the gem istelf) that daemonizes the executable. Additionally, I'd also like for the startup script to point the executable at configuration in a place like /var/ To the best of my knowledge, there's no way with rubygems, gemspec, etc., to specify files getting blown out to other parts of your system during install (e.g. startup script to /etc/init.d, and config to

目前，我们常见的系统大概就是Windows、 Linux 和Mac OS了。Windows系统应该是大部分人最早开始接触的系统，毕竟Windows系统使用起来相当方便，只需要点点鼠标，外加会简单的打字，一般看视频、听音乐、上网都是没问题的。追求完美体验的用户可能会更加喜欢Mac OS系统，相比Windows系统而言，Mac OS用户界面更加的华丽，设计很人性化，用户体验会好很多。至于Linux，则主要安装在服务器上，一般人基本不太会接触，但是对于运维、开发人员而言，可能是不得不掌握的一种操作系统。 当然，随着信息技术的发展，全民素质的提高，越来越多的人开始了解Linux并尝试去使用Linux，Linux也逐渐进入了大家的视线。像Ubuntu、Debian、CentOS等Linux系统因为有着类似Windows的桌面和相对人性化的设计而在为人所熟知，大部分初学者基本会安装上述系统来体验一下所谓的Linux系统，如果你对Linux系统也有一定的兴趣，可以去看看 《Linux就该这么学》 这本书，是一本比较好的Linux入门书籍。 今天，我在这里向大家介绍一下如何为RedHat7更换yum源。选择RedHat的原因很简单：1、RedHat的老板是红帽公司（全球最大的开源技术厂商）；2、，RedHat是全世界内使用最广泛的Linux系统。3、RedHat系统具有极强的性能与稳定性

StackOverflow has yet to fail me, so don't let me down this time! I need to build FFmpeg on RHEL4 ... yes, 4! The version of make on RHEL4 is 3.80 , and the Makefile that ./configure generates when configuring FFmpeg does not seem to be compatible. When I make it throws a parse error every time. This happens on pretty much every software pkg I try and build. My applications group (at work) will not upgrade this machine, so please skip the suggestions to upgrade to RHEL5 or 6. What are my options for installing FFmpeg? Your question specified that doing a proper upgrade (i.e., upgrading the