cloud-init shows error "Error persisting instance-data.json"

Solution In Progress - Updated -

Issue

  • We found the following error from cloud-init is recorded in /var/log/messages

    2020-03-01 12:34:56,789 - __init__.py[WARNING]: Error persisting instance-data.json: 'utf8' codec can't decode byte 0xa0 in position 1: invalid continuation byte
    2020-03-01 12:34:56,789 - __init__.py[WARNING]: Error persisting instance-data.json: 'utf8' codec can't decode byte 0xa1 in position 2: invalid start byte
    
  • The error is observed in overcloud nodes, or instances running on overcloud nodes

Environment

  • Red Hat OpenStack Platform 13
  • Red Hat Enterprise Linux 7.6
  • Red Hat Enterprise Linux 7.7

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