Vadym Kalsin Author
Monitoring engineer
88 contributions
3.3m contribution views
Skills
- monitoring
- python
- data analysis
- linux
Interested in learning
- docker
- go
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Posts
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Published Tutorial
How To Install and Secure Grafana on Ubuntu 20.04
Grafana is an open-source data visualization and monitoring tool that integrates with complex data sources like Prometheus and ElasticSearch. Grafana lets you create alerts, notifications, and ad-hoc filters for your ... -
Published Tutorial
How To Install Nagios 4 and Monitor Your Servers on Ubuntu 18.04
Nagios is a popular open-source monitoring system. It keeps an inventory of your servers and monitors them so you know your critical services are up and running. Using a monitoring system like Nagios is an essential t... -
Published Tutorial
How To Install and Use PostgreSQL on CentOS 8
PostgreSQL, or Postgres, is a relational database management system that provides an implementation of the SQL querying language. It is a popular choice for many small and large projects and has the advantage of bein... -
Published Tutorial
How To Install and Configure an SNMP Daemon and Client on Ubuntu 18.04
SNMP stands for simple network management protocol. It is a way that servers can share information about their current state, and also a channel through which an administer can modify pre-defined values. In this guide... -
Published Tutorial
How To Install and Use TimescaleDB on CentOS 7
TimescaleDB is an open-source database optimized for storing time series data. It is implemented as an extension of PostgreSQL and combines the ease-of-use of relational databases and the speed of NoSQL databases. By ... -
Published Tutorial
How To Install and Use PostgreSQL on CentOS 7
PostgreSQL, or Postgres, is a relational database management system that provides an implementation of the SQL querying language. It is a popular choice for many small and large projects and has the advantage of bein... -
Published Tutorial
How To Install and Use TimescaleDB on Ubuntu 18.04
TimescaleDB is an open-source database optimized for storing time series data. It is implemented as an extension of PostgreSQL and combines the ease-of-use of relational databases and the speed of NoSQL databases. By ... -
Published Tutorial
How To Install and Secure Grafana on Ubuntu 18.04
Grafana is an open-source data visualization and monitoring tool that integrates with complex data from sources like Prometheus, InfluxDB, Graphite, and ElasticSearch. In this tutorial, you will install Grafana and se... -
Published Tutorial
How To Set Up a Help Desk System with OTRS on Ubuntu 18.04
OTRS, also known as the Open source Ticket Request System, is a help desk and IT service management system. In this tutorial, you will install OTRS Community Edition on an Ubuntu 18.04 server and set up a simple help ... -
Published Tutorial
How To Install and Configure Zabbix to Securely Monitor Remote Servers on CentOS 7
Zabbix is open-source monitoring software for networks and applications. In this tutorial, you will configure a Zabbix-based monitoring system on two CentOS 7 machines. One will be configured as the server, and the ot... -
Published Tutorial
How To Secure Apache with Let's Encrypt on CentOS 7
SSL certificates are used within web servers to encrypt the traffic between the server and client, providing extra security for users accessing your application. Let’s Encrypt provides an easy way to obtain and instal... -
Published Tutorial
How To Install and Configure Zabbix to Securely Monitor Remote Servers on Ubuntu 18.04
Zabbix is open-source monitoring software for networks and applications. In this tutorial, you will configure a Zabbix-based monitoring system on two Ubuntu 18.04 machines. One will be configured as the server, and th... -
Published Tutorial
How To Gather Infrastructure Metrics with Metricbeat on CentOS 7
Metricbeat, the replacement for Topbeat, is a lightweight data shipper that collects CPU and memory statistics from a server and sends the data directly to your Elasticsearch deployment. In this tutorial, you will use... -
Published Tutorial
How To Gather Infrastructure Metrics with Metricbeat on Ubuntu 18.04
Metricbeat, the replacement for Topbeat, is a lightweight data shipper that collects CPU and memory statistics from a server and sends the data directly to your Elasticsearch deployment. In this tutorial, you will use... -
Published Tutorial
How To Install Elasticsearch, Logstash, and Kibana (Elastic Stack) on CentOS 7
In this tutorial for CentOS 7, you will learn how to install all of the components of the Elastic Stack, a collection of open-source software produced by Elastic which allows you to search, analyze, and visualize logs... -
Published Tutorial
How To Install Elasticsearch, Logstash, and Kibana (Elastic Stack) on Ubuntu 16.04
In this tutorial, we will go over the installation of the Elasticsearch ELK Stack on Ubuntu 16.04 (that is, Elasticsearch 2.3.x, Logstash 2.3.x, and Kibana 4.5.x). We will also show you how to configure it to gather a... -
Published Tutorial
How To Install Elasticsearch, Logstash, and Kibana (Elastic Stack) on Ubuntu 18.04
In this tutorial, we will go over the installation of the Elastic Stack on an Ubuntu 18.04 server. You will learn how to install all the components of the Elastic Stack (including Filebeat, a Beat used for forwarding ... -
Published Tutorial
How to Retrieve Let's Encrypt SSL Wildcard Certificates using CloudFlare Validation on CentOS 7
The author selected Code.org to receive a donation as part of the Write for DOnations program. Let's Encrypt is a certificate authority (CA) that provides free... -
Published Tutorial
How to Install and Configure a LEMP Stack using Software Collections on CentOS 7
In this guide, we will demonstrate how to install a LEMP stack on a CentOS 7 server. The CentOS operating system takes care of the first requirement (that being Linux). We will describe how to install the rest of the ... -
Published Tutorial
How To Monitor Nagios Alerts with Alerta on Ubuntu 16.04
Alerta is a web application used to consolidate and de-duplicate alerts from multiple monitoring systems and visualize them on a single screen. Alerta can integrate with many well-known monitoring tools like Nagios, Z...