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Initial Settings after installing the CentOS 7

1) To change the hostname permanently, edit the following file: sudo vi /etc/hostname Here you can simply put the name of your system (in my case, I have assigned it CentOS-7): After that, edit the hosts file: sudo vi /etc/hosts Here add the same name, that you have added in the /etc/hostname file, after 127.0.0.1: After reboot, it will display the new hostname. 2) After login…

Setup Local Yum Repository on CentOS / RHEL / Scientific Linux 6.4

We have already shown you how to create a local repository on Ubuntu systems. Today we are going to learn about setting up local yum repository on CentOS 6.4 and other RPM based distributions. As I noted in my previous tutorial about local repository, if you have to installed software, security updates and fixes often in multiple systems in your…

Cobbler Quickstart Guide

Cobbler can be a somewhat complex system to get started with, due to the wide variety of technologies it is designed to manage, but it does support a great deal of functionality immediately after installation with little to no customization needed. Before getting started with cobbler, you should have a good working knowledge of PXE as well as the automated…

디스크 볼륨 사이즈를 내 맘대로!

lvm 활용 A에서 Z까지시스템 관리자라면 한 번쯤은 파일시스템이 꽉 차 서버가 멈춰버렸던 경험을 갖고있을 것이다. 불필요한 파일을 지우는 임시 요법으로 해결할 수 없을 경우에는 할 수없이 기존 시스템을 백업하고 파티션을 새로 구성해 운영체제를 설치하곤 했을것이다. 그러나 이제 이런 막노동(?)으로부터 해방이다. 리눅스 커널 2.4가 lvm이라는유용한 기능을 제공하기 때문이다.김용일 유니워크——————————————————————————–로지컬 볼륨 매니저(Logical Volume Manager, 이하 lvm)는 기존에 있던 파티션을 합쳐새롭게 구성하는 기능이다.컴퓨터를…

Configuring Lustre

Configuring Lustre You can use the administrative utilities provided with Lustre to set up a system with many different configurations. This chapter shows how to configure a simple Lustre system comprised of a combined MGS/MDT, an OST and a client, and includes the following sections: Configuring the Lustre File System Additional Lustre Configuration Basic Lustre Administration More Complex Configurations Operational…

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