---
title: Scheduling resources
---

# Scheduling resources {#network-observability-scheduling-resources}

Taints and tolerations help you control which nodes host certain pods. Use these tools, along with node selectors, to guide the placement of network observability components.

A node selector specifies a map of key/value pairs that are defined using custom labels on nodes and selectors specified in pods.

For the pod to be eligible to run on a node, the pod must have the same key/value node selector as the label on the node.

## Network observability deployment in specific nodes {#network-observability-multi-tenancy_network_observability_scheduling}

Configure the `FlowCollector` resource using scheduling specifications, including `NodeSelector`, `Tolerations`, and `Affinity`, to control the deployment of network observability components on specific nodes.

The `spec.agent.ebpf.advanced.scheduling`, `spec.processor.advanced.scheduling`, and `spec.consolePlugin.advanced.scheduling` specifications have the following configurable settings:

- `NodeSelector`
- `Tolerations`
- `Affinity`
- `PriorityClassName`

```yaml {title="Sample FlowCollector resource for spec.<component>.advanced.scheduling"}
apiVersion: flows.netobserv.io/v1beta2
kind: FlowCollector
metadata:
  name: cluster
spec:
# ...
advanced:
  scheduling:
    tolerations:
    - key: "<taint key>"
      operator: "Equal"
      value: "<taint value>"
      effect: "<taint effect>"
      nodeSelector:
        <key>: <value>
      affinity:
        nodeAffinity:
        requiredDuringSchedulingIgnoredDuringExecution:
          nodeSelectorTerms:
          - matchExpressions:
            - key: name
              operator: In
              values:
              - app-worker-node
      priorityClassName: """
# ...
```

**Additional resources**
{._additional-resources}

- [Understanding taints and tolerations](/openshift-docs-markdown/nodes/scheduling/nodes-scheduler-taints-tolerations#nodes-scheduler-taints-tolerations-about_nodes-scheduler-taints-tolerations)
- [Assign Pods to Nodes (Kubernetes documentation)](https://kubernetes.io/docs/concepts/scheduling-eviction/assign-pod-node/)
- [Pod Priority and Preemption (Kubernetes documentation)](https://kubernetes.io/docs/concepts/scheduling-eviction/pod-priority-preemption/#priorityclass)