Node health checks are mechanisms used to monitor the status and performance of nodes in a cluster. In Kubernetes, these checks ensure that nodes are functioning properly and can handle workloads. There are typically two types of health checks:
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Liveness Probes: These checks determine if a node or a container is running. If a liveness probe fails, Kubernetes can restart the container to restore its functionality.
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Readiness Probes: These checks assess whether a node or a container is ready to accept traffic. If a readiness probe fails, Kubernetes will stop sending traffic to that container until it passes the check again.
These health checks help maintain the overall reliability and availability of applications running in the cluster by ensuring that only healthy nodes and containers are utilized.
