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Error Initializing Docker: "graphdriver: expected integer"

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Problem

Docker fails to start with the following error message.

Error starting daemon: error initializing graphdriver: expected integer

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Environment

  • Platform9 Managed Kubernetes - All Versions

  • Docker

  • CentOS

  • LVM

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Cause

The node may have been re-used from a previous Kubernetes cluster for which the Docker volume group (LVM) was not recreated.

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Resolution

Warning: The following will erase any data associated with the logical volume(s) contained within the volume group. If you are uncertain about this operation, it may be recommended to perform a backup following the guide provided under the Additional Information section.

  1. Remove any logical volumes associated with the volume group.

  1. Remove the volume group.

  1. Re-create the volume group following the instructions outlined in the Platform9 Managed Kubernetes CentOS prerequisitesarrow-up-right.

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Additional Information

LVM: Taking a Backup Using Snapshotsarrow-up-right

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