![]() While not a collection agent, Graphite offers a simple method for getting measurements into a time-series database. Teams typically use Graphite to track the performance of: The tool specializes in visualizing data but requires a third-party solution for data collection. Graphite is an open-source solution that collects, stores, and displays time-series data in real-time. Read about the best Docker container monitoring tools that allow you to track activities and keep your Docker-based setup in good health. A robust alerting system based on custom triggers and notifications.A range of official and community plugins.Various advanced features (trend prediction, problem forecasting, event correlation, etc.).Agents that allow you to track thousands of servers and monitor a range of metrics.As far as free tools go, this one offers the most out-of-the-box capabilities. Unlike some free New Relic alternatives, Zabbix is a deep, enterprise-grade platform capable of monitoring large-scale IT environments. You can also choose a Docker installation if necessary. The Zabbix team maintains repositories and packages for Debian, Ubuntu, and CentOS. The tool enables you to track different metrics, including: Zabbix consists of two main components, the Zabbix Server and the monitoring agent you install on each system you wish to monitor. Zabbix is an open-source, PHP-based monitoring software that offers several database backend options ( MySQL, PostgreSQL, TimescaleDB, and Oracle). Users define everything in agent config files.Allows you to track all essential metrics. ![]() ![]() Broad monitoring capabilities for a free tool.Nagios also offers a paid version of its software (Nagios XI) that enables more comprehensive features (performing checks, sending notifications, processing performance data, etc.). The tool relies on a pull model where a central server connects to agents on each node, triggers a check cycle, and returns the results. Nagios may not be ideal for modern cloud deployments and containers. If you require charts, you will have to connect Nagios to another monitoring solution. While Nagios Core tracks all key metrics, the tool does not show graphs. Nagios Core is available for free under a GNU license and allows you to track all essential metrics, including: Nagios Core is an open-source monitoring tool that has been on the market since 2002. While these monitoring solutions may not be as feature-rich as New Relic or other paid options, these free tools still hold value in the right use case.Learn what else your server management strategy should account for besides reliable monitoring. ![]()
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