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    Unable to read consumer identity _YUM

    While running the yum update command, we receive the error message Unable to read consumer identity

    YUM


    Error:

    Loaded plugins: katello, product-id, rhnplugin, security, subscription-manager
    Updating certificate-based repositories.
    Unable to read consumer identity


    Resolution:

    If RHN Classic or RHN Satellite is used for updating the system, disable subscription-manager:

    1)  RHEL6: Edit /etc/yum/pluginconf.d/subscription-manager.conf and make enabled = 0

    chkconfig rhnsd off
    service rhnsd stop


    Red Hat Subscription Manager
    If Red Hat Subscription Manager (RHSM) is used for updating the system, disable RHN Classic / Satellite:

    chkconfig rhsmcertd off
    service rhsmcertd stop

    Run rm -f /etc/sysconfig/rhn/systemid

    Refresh yum cache

    After making the above changes, execute the following commands to refresh the yum cache:


    # rm -fr /var/cache/yum/*

    # yum clean all

    # yum makecache

    Root Cause

    The yum plugins of RHN Classic and subscription-manager (RHSM) were enabled, which means user was using both RHN Classic/Satellite and subscription-manager to manage system.
    Redhat KB #78153




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