Monitoring

The author selected the Open Source Initiative to receive a donation as part of the Write for DOnations program. Introduction> Introduction # Zabbix is open-source monitoring software for networks and applications.

Introduction> Introduction # Prometheus is a powerful, open-source monitoring system that collects metrics from your services and stores them in a time-series database. It offers a multi-dimensional data model, a flexible query language, and diverse visualization possibilities through tools like Grafana.

The author selected Girls Who Code to receive a donation as part of the Write for DOnations program. Note: This tutorial is for Traefik v1. If you wish to install and configure Traefik v2, use this newer tutorial.

The author selected the Internet Archive to receive a donation as part of the Write for DOnations program. Introduction> Introduction # The Elastic Stack — formerly known as the ELK Stack — is a collection of open-source software produced by Elastic which allows you to search, analyze, and visualize logs generated from any source in any format, a practice known as centralized logging.

How To Monitor System Logins> How To Monitor System Logins # A fundamental component of authentication management is monitoring the system after you have configured your users. We will be exploring these concepts on a Ubuntu 22.

Introduction> Introduction # In this tutorial, we will cover the installation of Nagios 4, a very popular open source monitoring system, on CentOS 7 or RHEL 7. We will cover some basic configuration, so you will be able to monitor host resources via the web interface.

Introduction> Introduction # The Elastic Stack — formerly known as the ELK Stack — is a collection of open-source software produced by Elastic which allows you to search, analyze, and visualize logs generated from any source in any format, a practice known as centralized logging.

Introduction> Introduction # The ability to send e-mail alerts is essential for the day to day management of any VPS. For system administrators (and users alike), being able to take advantage of this [new] possibility not only makes things easier, but also provides you with many allies in your combat against thieves or downtime with triggers you can create.

Introduction> Introduction # Foreman is an open source tool that can help with the management of servers, by providing an easy way to interact with Puppet (or Chef) to automate tasks and application deployment.

Introduction> Introduction # In this tutorial, we will cover the installation of Nagios 4, a very popular open source monitoring system, on Ubuntu 14.04. We will cover some basic configuration, so you will be able to monitor host resources via the web interface.

Note: This tutorial is for an older version of the ELK stack, which is not compatible with the latest version. The latest version of this tutorial is available at How To Install Elasticsearch, Logstash, and Kibana (ELK Stack) on Ubuntu 14.

Introduction> Introduction # In this tutorial, we will go over the installation of Icinga, an open source monitoring system, on Ubuntu 14.04. We will cover some basic configuration, so you will be able to monitor network services and host resources via the web interface.

Introduction> Introduction # In this tutorial, we will cover the installation of Graylog2 (v0.20.2), and configure it to gather the syslogs of our systems in a centralized location. Graylog2 is a powerful log management and analysis tool that has many use cases, from monitoring SSH logins and unusual activity to debugging applications.

Introduction> Introduction # A large part of being a system administrator is collecting accurate information about your servers and infrastructure. There are a number of tools and options for gathering and processing this type of information.

Status: Deprecated> Status: Deprecated # This article covers a version of CentOS that is no longer supported. If you are currently operating a server running CentOS 6, we highly recommend upgrading or migrating to a supported version of CentOS.

Status: Deprecated> Status: Deprecated # This article covers a version of Ubuntu that is no longer supported. If you are currently operate a server running Ubuntu 12.04, we highly recommend upgrading or migrating to a supported version of Ubuntu:

Introduction> Introduction # Docker can be an efficient way to run web applications in production, but you may want to run multiple applications on the same Docker host. In this situation, you’ll need to set up a reverse proxy since you only want to expose ports 80 and 443 to the rest of the world.

Status: Deprecated> Status: Deprecated # This article covers a version of Ubuntu that is no longer supported. If you are currently operate a server running Ubuntu 12.04, we highly recommend upgrading or migrating to a supported version of Ubuntu:

Introduction> Introduction # In this tutorial, we will go over the installation of the Elasticsearch ELK Stack on Ubuntu 14.04—that is, Elasticsearch 2.2.x, Logstash 2.2.x, and Kibana 4.5.x. We will also show you how to configure it to gather and visualize the syslogs of your systems in a centralized location, using Filebeat 1.

Introduction> Introduction # Gathering information about your systems and applications can give you the information you need to make informed decisions about your infrastructure, servers, and software. There are many different ways to acquire this kind of information, and display it in a way that allows for easy comprehension.