CoreOS disable Consistent Network Device Naming

To disable Consistent Network Device naming in CoreOS, run Then reboot the server Now network interface will look like core@localhost ~ $ ip a 1: lo: mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00


Free Images for Web Developers

Here are some sites that offers free images and photos. http://www.freeimages.com https://unsplash.com/


Change network name to eth0 on Ubuntu/Debian

To change network name to eth0 like in old versions of linux, edit file Find Replace with Now run On reboot, your network name will be changed back to old eth0/eth1 format. CoreOS disable Consistent Network Device Naming


DNS

DNS convert human readable domain name to IP address. To find IP of a web site, you can use commands like nslookup, dig, ping etc.. How to verify name server IP address Check DNS Propagation Flush Cache with Google Public


How to verify name server IP address

Name servers are more than just an A record. You need to create a name server record with Domain Registrar. Verifying name servers are not easy for many TLD, you have to trust your domain registrar. Only they can verify


Mail API

Here are some providers that allow you to send email using API. Many of these providers offer free plans with high monthly limits, so you pay nothing unless you overgrow the free plan. Sparkpost.com – 100K Free Email Per Month.


Google Chrome

Google Chrome profile directory in Ubuntu /home/USER/.config/google-chrome Create a New profile To create a new profile, create a folder First time run For first run, use following command Starting Chrome For regular usage, start google chrome with See what profile


Install Node.js on CentOS 6

To install Node.js on CentOS 6, run following commands as user root Once installed, you have node and npm available. [root@s45-40-135-102 ~]# node –version v6.11.2 [root@s45-40-135-102 ~]# npm –version 3.10.10 [root@s45-40-135-102 ~]# Now you can install required node modules with


Inspecting an object in Python

You may need to inspect an object to see what methods available in it. In python programming language, strings are considered as object. So lets check with simple string variable. The dir() function lists all methods available in the object.


Cpanel SSL A fatal error or timeout occurred while processing this directive

On a Cpanel Server, Clicking on Manage SSL sites I get error A fatal error or timeout occurred while processing this directive When checking the Cpanel error logs at Got following error [2017-07-29 09:57:24 +0000] die [Internal Death while parsing