Cloud
Using the Rackspace Nova Client
List your Cloud Servers You can list all your servers by simply using the nova client’s list sub-command. Nova Help The nova client comes with a help subcommand. You can find out more about how […]
Month: February 2015
WordPress
WordPress Plugins for Code Snippets
If you’re looking to insert snippets of code into your WordPress site, you might find that the <code> and <pre> tags don’t quite cut the mustard. You could mess around with the CSS and stylise […]
CentOS 7
Install and Configure fail2ban on CentOS 7
To install fail2ban on CentOS/RHEL 7, you first need to make sure you have the EPEL repository enabled. Then you can simply install it with yum as usual. Configure fail2ban You will need to create […]
CentOS 7
Repodata is over 2 weeks old
In Red Hat 7 / CentOS 7, you may need to clear your repository cache if you see the below message when using yum. Repodata is over 2 weeks old. Install yum-cron? Or run: yum […]
CentOS 7
Securing an SSH Server
Nobody likes to log into their server and see this! Over 31,00 failed root login attempts in just a few days!! Disable Root Logins By default (on my system atleast), root logins are enabled. Before […]
Linux
First Attempt at Searching for Failed SSH Logins
Nobody likes to log into their server to see there have been over 31,00 failed login attempts in a few days!! [andy@bashful ~]$ ssh [email protected] Last failed login: Sun Feb 8 16:31:28 UTC 2015 from […]
Java
Using HelloWorld to Test a JDK Installation
To test that your Java Development Kit (JDK) is installed correctly, you need to write a simple Java program, compile it, and run the compiled bytecode. A simple Java HelloWorld example looks like this. You […]
CentOS 7
Getting Started with the Rackspace Nova Client
You will need to export some environment variables used by the Nova client. If you have a UK-based Rackspace cloud account, you will need to enter something like this: …And if you have a US, […]
CentOS 7
Installing the Rackspace Nova Client on CentOS 7
Installing the Rackspace Nova client should just be as simple as installing the below packages. However, you will first need to make sure you have the development tools or the installation will fail with messages […]