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PowerScale OneFS Upgrade Planning and Process Guide

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Preserve the Kerberos keytab file

If Kerberos authentication is configured on the cluster, upgrading OneFS might delete the local /etc/<name>.keytab file that is on each node. Choose one of the following methods to preserve the keytab file during the upgrade:

  • Copy the keytab file to the /ifs directory where it can be accessed by all nodes on the cluster instead of saved locally on each node.
  • Add the following text to the /etc/mcp/override/user_preserve_files.xml file of each node on the cluster where <name> is the name of the keytab file: 
    <?xml version="1.0" encoding="UTF-8"?>
<user_preserve>
<files>
<file name="etc/allow_unsupported_boot" recursive="no">
</file>
...
...
<file name="etc/<name>.keytab" recursive="no" />

</files>
</user_preserve>

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