Linux
We have found the following guide very useful in this process. This works for both dedicated servers as well as VPS nodes: cPanel Servers If your server has cPanel installed you first need to remove filesystem from the exclude line in /etc/yum.conf. If you don’t the yum
configuration
Introduction Ntopng is an opensource network traffic monitoring system that provides a web interface for real-time network monitoring. It very useful tool that helps you learn more about your network traffic. Ntopng provides several tools for monitoring various protocols, traffic variants and bandwidth across multiple time frames. You can install
backup
PostedSeptember 19, 2013 136kviews SECURITY BACKUPS UBUNTU * Justin Ellingwood Introduction Duplicity is a versatile local and remote backup program that can implement a number of transfer protocols and third-party storage solutions. In this guide, we will discuss how to install duplicity on an Ubuntu 12.04 VPS. We will be
configuration
https://www.thegeekdiary.com/centos-rhel-7-how-to-setup-yum-repository-using-locally-mounted-dvd/ yum is the primary tool for getting, installing, deleting, querying, and managing Red Hat Enterprise Linux RPM software packages from official Red Hat software repositories, as well as other third-party repositories. The post below describes step by step procedure to use a locally mounted RHEL
backup
change_tape.sh #!/bin/sh # after tar complete backup command # tar -v –create –tape-length=1G –file=/dev/nst24 /usr –new-volume-script=/root/change_tape.sh # mtx -f /dev/sg28 status | grep Full| awk -F: '{print $1}' | awk '{print $3}' > /root/tapelist.txt mtx -f /dev/sg28
file system
To create a partition start GNU parted as follows: # parted /dev/sdb Output: GNU Parted 2.3 Using /dev/sdb Welcome to GNU Parted! Type 'help' to view a list of commands. (parted) Creates a new GPT disklabel i.e. partition table: (parted) mklabel gpt Sample outputs: Warning:
file system
I've been using btrfs since 2012, and while as of 2014, it's far from done, it's gone a long way in that time. I thought I'd post some tips and scripts from things I've learned through my own use and
file system
https://wiki.archlinux.org/index.php/Sparse_file This article contains information regarding sparse files, their creation, maintenance, and expansion. Contents [hide] * 1Sparse Files * 1.1What is a sparse file? * 1.2Advantages * 1.3Disadvantages * 2Creating sparse files * 2.1Making existing files sparse * 2.2Formatting the file with a filesystem * 2.
Network
phillips@phillips-ThinkPad-T420:~$ cat bin/3Gwifi_net_office.sh #!/bin/sh # For dropbox sync ~/Dropbox # This script help update routing table for forward main traffic to wifi -> 3G # and keep office network connection via eth0 wlanip=`ip -4 addr show wlan0 | grep inet| awk '{print $2}' | awk
Linux
在 CentOS 7 上設置 grub2 此文章主要以 Things to Know About Grub2 為基礎，而對象是那些開啟 /etc/grub2.cfg（或 /boot/grub2/grub.cfg）編輯開機選單的用戶。 另外請參閱 上游關於 grub2 的文檔 和 grub 的使用手冊。 1. 開機選單是自動建立出來的 請勿嘗試手動編輯開機選單，因為它是按照 /boot/ 目錄內的檔案自動建立出來的。然而你可以調整 /etc/default/grub 檔內定義的通用設定，及在 /etc/grub.d/40_custom 檔內加入個別自訂項目。 /etc/default/grub
backup
http://cyrilwang.blogspot.tw/2013/09/glusterfs.html 去年我介紹過利用 lsyncd 這個套件來達成目錄的同步備援，今天則要利用 glusterfs 來達成類似的效果。雖說類似，但是 lsyncd 與 glusterfs 相比有下列差別： * lsyncd 監測目錄的變動，並定期 (或達到一定的異動次數) 將異動同步到另外一個目錄。因為 lsyncd 採用 inotify 監測技術，所以如果目錄內的檔案或子目錄一多，就可能會產生無法監測的問題。 * lsyncd 本身並沒有支援高可用性，必須利用其它機制 (如 heartbeat) 來達成高可用性。 * 被同步的目錄通常僅能當做備援，無法作為負載平衡之用。不但在資源使用上較為浪費，擴充性也比較差。 嚴格來說，拿 lsyncd 與 glusterfs 相比並不是一件公平且合理的事情，因為 glusterfs
configuration
Environment Red Hat Enterprise Linux 7 device-mapper-multipath LUNs with ALUA enabled Issue All paths for a LUN are grouped all together even though they come with different priority from the external storage. The output of "multipath -ll" shows something like the following: mpatha (360021868018107e0c000000000000098) dm-16 IBM ,2145 size=