Kubernetes Monitoring

Kubernetes helps teams deploy and scale containerized applications, but it can also make infrastructure harder to monitor as workloads move across nodes, pods restart, jobs fail, and storage or certificate issues appear.

Nagios XI gives administrators a practical way to monitor Kubernetes and K3s clusters alongside the rest of their infrastructure. Using the Kubernetes with NCPA Wizard, teams can track key cluster health metrics, configure alert thresholds, and bring Kubernetes visibility into the same platform they use for servers, networks, applications, databases, and services.

Kubernetes is usually only one part of a larger environment. Applications may also depend on physical or virtual servers, network devices, databases, storage, DNS, SSL certificates, and cloud services.

Nagios helps bring those systems together in one monitoring platform, giving teams centralized visibility, alerting, dashboards, reports, and status views across both Kubernetes and the infrastructure around it.

With Nagios XI, teams can:

• Monitor Kubernetes alongside the rest of their infrastructure
• Receive alerts when important cluster checks enter warning or critical states
• View Kubernetes health from centralized dashboards
• Connect Kubernetes issues to related server, network, storage, and application problems
• Use existing Nagios XI workflows for notifications, reporting, and troubleshooting

With Nagios XI, teams can monitor important Kubernetes health and workload indicators, including:

• Active nodes
• Deployments
• DaemonSets
• ReplicaSets
• StatefulSets
• Failed jobs
• Pod restarts
• TLS status
• Persistent volume claims
• Unbound persistent volumes
• CPU, memory, disk, and node health indicators
• Kubernetes API and component availability

For a full breakdown of available Kubernetes checks, view the Master Kubernetes K8s/K3s Monitoring With Nagios XI guide.

This helps teams catch issues earlier, understand what changed, and respond before small problems turn into larger outages.

The Kubernetes with NCPA Wizard helps simplify setup by guiding users through the monitoring configuration process inside Nagios XI. Instead of manually building every check, administrators can select the Kubernetes metrics they want to monitor, set warning and critical thresholds, and apply those checks through the XI interface.

The monitoring workflow generally includes preparing Kubernetes access, configuring NCPA, running the wizard, selecting checks, and applying alert thresholds.

Nagios also supports related container and cloud-native monitoring use cases.

For container-level monitoring, teams can use Docker Monitoring resources. For Red Hat OpenShift environments, Nagios XI includes an OpenShift Wizard. For environments already using Prometheus exporters or endpoints, Nagios XI can also help bring Prometheus metrics into XI monitoring workflows.

To get started, use these Nagios resources:

• Master Kubernetes K8s/K3s Monitoring With Nagios XI
• How to Use the Kubernetes with NCPA Wizard in Nagios XI
• Setting Up Kubernetes for Monitoring with NCPA
• Monitoring Kubernetes Clusters with Nagios XI and NCPA
• Nagios XI Admin Guide

These resources walk through the setup process, wizard configuration, access requirements, and available Kubernetes checks.