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Requesting a persistent volume in Trident returns with an EOF error

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Category:
astra_trident
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snapx
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Applies to

  • Trident for Kubernetes 19.07 and higher
  • Trident for Openshift 19.07 and higher

Issue

The following error ends the PV creation attempt: Post "http://127.0.0.1:8000/trident/v1/backend": EOF

Additional symptoms and behavior seen:

  • worker nodes have full connectivity and resolve all names correctly
  • /etc/resolv.conf in worker nodes have a "search domains" directive, that works as expected
  • pods running on these worker nodes will inherit options and search domains from their host, and add a ndots:5 directive
  • pods only resolve FQDNs, but when removing "ndots:5" or search domains inside the pod, the pod is able to resolve any name
  • apart from name resolution, some destinations are unreachable (ping : no route to host)
  • the kube-apiserver is slow to answer any query with kubectl
  • an ONTAPI https request test to the SVM shows that it's responding normally to, for example a system-get-version API call (*)

 

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