Pods are failing to start on a node due to IP address exhaustion in OpenShift

Solution Verified - Updated -

Issue

  • Pods are failing to create on a node. The following errors are present in the node log file:

    atomic-openshift-node[19006]: E0121 12:14:30.367335   19006 pod_workers.go:182] Error syncing pod ... failed: rpc error: code = 2 desc = NetworkPlugin cni failed to set up pod ... network: CNI request failed with status 400: 'failed to run IPAM for : failed to run CNI IPAM ADD: no IP addresses available in network: openshift-sdn\n'
    

Environment

  • OpenShift Container Platform
    - 3.6
    - 3.7

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase of over 48,000 articles and solutions.

Current Customers and Partners

Log in for full access

Log In
Close

Welcome! Check out the Getting Started with Red Hat page for quick tours and guides for common tasks.