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Wednesday, March 20, 2019

Extend or increase LVM Partition’s size using lvextend command

Resizing the file system size is an important task of Linux admin’s profile. In Linux , LVM(Logical Volume Manager) provides the facility to increase and reduce the file system size. In...

Hướng dẫn cài đặt và cấu hình OpenVPN server trên CentOS 6

1. Giới thiệu: - Bài viết này sẽ hướng dẫn khách hàng cách cài đặt và cấu hình OpenVPN server trên hệ điều hành CentOS 6. - Trước khi bắt đầu, khách hàng...

How to Log Linux IPTables Firewall Dropped Packets to a Log File

This article is part of our ongoing Linux IPTables series of articles. When things are not working as expected with your IPTables rules, you might want to log the IPTables dropped...

RAID on Linux

1. raid 0         ->stripping 2. raid 1         ->mirroring 3. raid 2 onwards ->parity check TO CREATE RAID Step 1. fdisk  /dev/sda  ->create 3 partitons and label as fd Step 2. partprobe Step 3. fdisk -l Step 4. mdadm -C /dev/md0 -n...

Fencing and Adding a Failover to Clustering – Part 3

In the previous two guides, we’ve discussed how to install cluster, creating a cluster and adding nodes to the cluster, also we’ve studied how cluster.conf appears to be after the necessary...

High-Availability Storage with GlusterFS on CentOS 7 – Mirror across two storage servers

This tutorial shows how to set up a high-availability storage with two storage servers (CentOS 7.2) that use GlusterFS. Each storage server will be a mirror of the other storage server,...

Hướng dẫn cài đặt phần mềm Monitor Zabbix

1. Zabbix là gì? Zabbix là một giải pháp giám sát mạng phân tán, mã nguồn mở, mạnh mẽ, có nhiều tính năng độc đáo và khả năng tùy biến cao. Zabbix...

Set Up DKIM (DomainKeys Identified Mail) Working With Postfix On CentOS Using OpenDKIM

This tutorial shows how to get DKIM working on a CentOS box running Postfix using OpenDKIM, I'll also cover some simple trouble shooting tips and advice for future upgrade on your...

18 Tar Command Examples in Linux

The Linux “tar” stands for tape archive, which is used by large number of Linux/Unix system administrators to deal with tape drives backup. The tar command used to rip a collection...

How to Sync Cluster Configuration and Verify Failover Setup in Nodes – Part 4

Hello folks. First of all, my apologies for the delay of the last part of this cluster series. Let’s get on to work without getting any more delayed. As we many of...

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Cài hệ điều hành trên hệ thống RAID.

Cài hệ điều hành trên hệ thống RAID. Cho đĩa CD cài đặt Windows XP vào ổ CDROM , khởi động máy tính cho phép...

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