This tutorial show how to increase partition size in Linux after increasing the disk space in VM with Citrix XenServer. Basically, there are some steps that we must do some steps in Linux to let Linux “aware” of this change. Scripts: [root@webserver search]# fdisk /dev/xvda WARNING: DOS-compatible mode is deprecated. It’s strongly recommended to switch…
All of us internet users might use at least one cloud service. However, do you think one nice day, your cloud service discontinues and all your files gone? Well, let say your Google Email account is terminated and all your documents/files are gone. It is really terrible. So the need of multiple cloud services for redundant…
This article guides how to take snapshop and restore to a new VM from Vultr snapshots. If you do not know Vultr, you can check Free $10 credit from Vultr – Digital Ocean killer. Take the snapshot Simple, go to the My Servers >> Manage >> Snapshots (BETA), give it a name in label and Take Snapshot…
This article shows how to solve the error when installing Python 2.6.7 on CentOS 6: “Yum broken: No module named yum”. When installing the dropbox service in Linux command line, I did compile python 2.6.7 from source, and after that, the yum command line stopped working. As you can see, it is terrible case as…
Quick note here the necessary steps to install and run Selenium with FireFox browser in CentOS. We will need to setup XWindows for Headless Selenium with FireFox webdriver. First, install Xvfb: [bash]yum -y install firefox Xvfb libXfont Xorg[/bash] Then, install X-desktop: [bash]yum -y groupinstall "X Window System" "Desktop" "Fonts" "General Purpose Desktop"[/bash] Next, launch a XWindows Virtual…
In this quick tutorials, I will mention a method to Auto-Renew / Validate a Let’s encrypt certificates on CloudFlare-enabled websites. As you may know, if you use CloudFlare for DNS/CDN purposes, then you cannot access to several server ports for Let’s Encrypt to validate the certification request. So in this case, we need to use…
