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Data Repository Prerequisites Checks Failed

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Article ID: 200362

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Updated On:

Products

CA Infrastructure Management CA Performance Management - Usage and Administration DX NetOps

Issue/Introduction

During upgrade of Data Repository the prerequisite checks failed.  We can see from the install log (install_log_install_09-26-2020_03-43-48): 

Prerequisites not fully met during local (OS) configuration for
verify-10.154.99.226.xml:
    HINT (S0305): https://my.vertica.com/docs/9.1.x/HTML/index.htm#cshid=S0305
        TZ is unset for dradmin. Consider updating .profile or .bashrc

Prerequisites not fully met during local (OS) configuration for
verify-10.154.99.224.xml:
    HINT (S0305): https://my.vertica.com/docs/9.1.x/HTML/index.htm#cshid=S0305
        TZ is unset for dradmin. Consider updating .profile or .bashrc
    FAIL (S0020): https://my.vertica.com/docs/9.1.x/HTML/index.htm#cshid=S0020
        Readahead size of  (/dev/mapper/mpathh) is too low for typical systems:
        256 < 2048

Prerequisites not fully met during local (OS) configuration for
verify-10.154.99.225.xml:
    HINT (S0305): https://my.vertica.com/docs/9.1.x/HTML/index.htm#cshid=S0305
        TZ is unset for dradmin. Consider updating .profile or .bashrc

Detected significant differences in the cluster:
    HINT: Differences in RAM (kbytes):
        verify-10.154.99.226.xml: 263876004
        verify-10.154.99.224.xml: 263876008
        verify-10.154.99.225.xml: 263876096
    For more information, see
    https://my.vertica.com/docs/9.1.x/HTML/index.htm#cshid=CLREQ01

System prerequisites failed.  Threshold = FAIL
 Hint: Fix above failures or use --failure-threshold

Cause

FAIL (S0020): https://my.vertica.com/docs/9.1.x/HTML/index.htm#cshid=S0020
        Readahead size of  (/dev/mapper/mpathh) is too low for typical systems:
        256 < 2048

Environment

Performance Management, NetOps

Resolution

After the changes were made as per the Vertica link below, the second installation attempt during the prereq checks passed.  The Vertica installation was successful.

https://my.vertica.com/docs/9.1.x/HTML/index.htm#cshid=S0020

Additional Information

As pointed out this is an upgrade from previous version.  The Vertica setting was probably an optional.  Now going forward this is mandatory.