Can you name tools for system diagnostics or monitoring?

Tools commonly used for system diagnostics and monitoring include:

• Prometheus — a monitoring and alerting system with a powerful query language for collecting metrics.
• Grafana — visualization of metrics, often used together with Prometheus.
• Nagios — a classic tool for monitoring the status of servers and services.
• Zabbix — a comprehensive monitoring system with support for agents and agentless data collection.
• ELK Stack (Elasticsearch, Logstash, Kibana) — for collecting, storing, and analyzing logs.
• top, htop — utilities for real-time resource monitoring on Unix systems.
• netstat, ss — for diagnosing network connections.
• strace, ltrace — for tracing system calls and library functions.

These tools help track the status of applications, servers, networks, and quickly identify problems.