[Updated 2018-06-11.] You can assign multiple IP addresses to an EC 2 instance. Here is a brief summary that will get you started on using the most recent AWS capabilities.
How to install the AWS CLI tools on Fedora, quick and easy
The AWS Command Line Interface (CLI) is a set of tools AWS provides to allow you to administer your AWS cloud infrastructure and other services in the command line on Windows, Mac and Linux. Installing them is quick and easy. Here is a quick guide to get you started.
How to verify the remaining validity of your letsencrypt certificates
In order to figure out how many days your letsencrypt certificates have left, you could check an online services such as:
However, that won’t work for a mail server that’s not also running a web server using the same certificate.
In this case, your best bet is to check the certificate file directly using the openssl command as follows:
openssl x509 -noout -dates -in /etc/letsencrypt/live/smtp.yourmailserverdomainname.com/cert.pem
How to set up remote access via SFTP to a web server root directory on RHEL/CentOS/Fedora using key pairs
Your users want to access a web server instance as a staging or production environment for DevOps… They want access to the web server document root of the sites they manage. Your job is to maintain the integrity of the whole system in terms of cyber security.
If you happen to be running a web server on Linux—for example in EC2 on Amazon AWS—and need to provide site owners remote access in a secure and responsible manner, here is how to do it.
How to get a grip on your log files growing outta control: set up and force logrotate
Logs that grow in size uncontrollably can cause unintended consequences. If you keep ignoring the situation, it will only get worse until you run our of disc space, the system starts being unresponsive or processes begin to crash.