Author: J. Mays

• These instructions are intended for displaying a list of the installed MySQL storage engines.
• I’ll be working from a Liquid Web Core Managed CentOS 6.5 server, and I’ll be logged in as root.

Servers can automatically perform tasks that you would otherwise have to perform yourself, such as running scripts. On Linux cloud dedicated servers or VPS servers, the cron utility is the preferred way to automate the running of scripts. In this article, we’ll cover how to view the jobs scheduled in the crontab list. For an introduction to Cron check-out our KB: How To: Automate Server Scripts With Cron. Knowing how to set up crontab is an important skill, but even if you’re not editing these knowing how to view them is important as well.

MariaDB is a drop-in replacement for MySQL. It is easy to install, offers many speed and performance improvements, easy to integrate into most MySQL deployments. Answers for compatibility questions can be found at: MariaDB versus MySQL – Compatibility. MariaDB offers more storage than MySQL, including Cassandra (NoSQL), XtraDB (drop-in replacement for InnoDB), and OQGRAPH.

Apache Cassandra was initially released in 2008 by the Apache Software Foundation. It is a free, open-source, NoSQL type database management system that is designed to address large amounts of information that can be shared across multiple servers and, it provides high availability, so it eliminates the single point of failure issues! It has excellent fault tolerances when operating on basic hardware or in a larger cloud infrastructure. It is used by high-profile companies like Constant Contact, CERN, Comcast, eBay, GitHub, GoDaddy, Hulu, Instagram, Intuit, Netflix, Reddit, The Weather Channel and a multitude of other business concerns. They selected to use Cassandra as it’s a wise choice to host your decentralized, NoSQL database solution.

• These instructions are intended specifically for solving the error: Failed to connect to ‘127.0.0.1:7199’: Connection refused.
• I’ll be working from both Liquid Web Core Managed CentOS 6 and CentOS 7 servers, and I’ll be logged in as root.

We have tutorials on How to Create a Storm Server Backup, and How to Restore a Storm Server Backup.

chkconfig is a command for checking and updating runlevel information for system services. For a primer on runlevels, check out our tutorial: Linux Runlevels Explained.

On September 24th, a vulnerability was reported in the GNU Bourne-Again-Shell (BASh, or Bash), specifically a flaw with how Bash processes values of environment variables, that allows remote code execution of varying types in many common configurations. The overall risk is severe due to bash being configured for use, by default, on most Linux servers.

• These instructions are intended specifically for updating Bash on Red Hat and CentOS.
• I’ll be working from both a Liquid Web Core Managed CentOS 6 server and a Liquid Web Self Managed CentOS 7 server, and I’ll be logged in as root.

• These instructions are intended specifically for updating Bash on Debian and Ubuntu.
• I’ll be working from both a Liquid Web Core Managed Ubuntu 14.04 server and a Liquid Web Self Managed Debian 7.4 server, and I’ll be logged in as root.