Tags: Tools

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OpenLDAP
In part one of this short tutorial series, Jack Wallen explains how to install OpenLDAP.

How to Install OpenLDAP on Ubuntu Server 18.04

The Lightweight Directory Access Protocol (LDAP) allows for the querying and modification of an X.500-based directory service. In other words, LDAP is used over a Local Area Network (LAN) to manage and access a distributed directory service. LDAPs primary purpose is to provide a set of records in a...
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Managing Changes in Open Source Projects

Why bother having a process for proposing changes to your open source project? Why not just let people do what they're doing and merge the features when they're ready? Well, you can certainly do that if you're the only person on the project. Or maybe if it's just you and a few friends. But if the...
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CI/CD Gets Governance and Standardization

Kubernetes, microservices and the advent of cloud native deployments have created a Renaissance-era in computing. As developers write and deploy code as part of continuous integration and continuous delivery (CI/CD) production processes, an explosion of tools has emerged for CI/CD processes, often...
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Why Unikernels Are Great for DevOps

Unikernels are single-purpose virtual machines (VM). They only run one application—which is interesting when you think about it, because that’s precisely how a lot of DevOps practitioners provision their applications today. There is way too much software to provision nowadays—pools of app servers,...
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How to Set the PATH Variable in Linux

In Linux, your PATH is a list of directories that the shell will look in for executable files when you issue a command without a path. The PATH variable is usually populated with some default directories, but you can set the PATH variable to anything you like. When a command name is specified by...
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How Service Meshes Are a Missing Link for Microservices

It is now widely assumed that making the shift to microservices and cloud native environments will only lead to great things — and yet. As the rush to the cloud builds in momentum, many organizations are rudely waking up to more than a few difficulties along the way, such as how Kubernetes and...
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Kubernetes
This tutorial describes the steps required to set up a multi-node Kubernetes cluster for development purposes.

Kubernetes Setup Using Ansible and Vagrant

This blog post describes the steps required to set up a multi node Kubernetes cluster for development purposes. This setup provides a production-like cluster that can be set up on your local machine. Why do we require multi node cluster setup? Multi node Kubernetes clusters offer a production-like...
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A Linux Sysadmin’s Guide to Network Management, Troubleshooting and Debugging

A system administrator’s routine tasks include configuring, maintaining, troubleshooting, and managing servers and networks within data centers. There are numerous tools and utilities in Linux designed for administrative purposes. In this article, we will review some of the most used command-line...
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mlocate
In this series of articles, we’ll look at the mlocate tool and examine how to quickly and easily tune it to your own specifications.

Finding Files with mlocate

Learn how to locate files in this tutorial from our archives. It’s not uncommon for a sysadmin to have to find needles buried deep inside haystacks. On a busy machine, there can be hundreds of thousands of files present on your filesystems. What do you do when you need to make sure one particular...
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The What and the Why of the Cluster API

Throughout the evolution of software tools there exists a tension between generalization and partial specialization. A tool’s broader adoption is a form of natural selection, where its evolution is predicated on filling a given need, or role, better than its competition. This premise is imbued in...
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