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How to add DNS in /etc/resolv.conf .

  • 1.  How to add DNS in /etc/resolv.conf .

    Posted Mon May 10, 2021 09:29 AM

    My QRadar 7.4.1 has stopped taking automatic update. After troubleshooting I found that my /etc/resolv.conf is empty.

    Can anyone please guide me how to add DNS in QRadar 7.4.1. Thanks.



    #QRadar
    #Support
    #SupportMigration


  • 2.  RE: How to add DNS in /etc/resolv.conf .

    Posted Thu May 20, 2021 03:55 AM

    Version: 7.4.1

    To see which interface is the management interface

    # cat /etc/management_interface

    Check this interface to see if the DNS is set on it.

    # cat /etc/sysconfig/network-scripts/ifcfg-eno1 -> if this had DNS enties

    DNS=10.64.100.240

    DNS=10.64.101.240

    if The /etc/resolv.conf is empty - so we need to add the DNS entries to it

    # vi /etc/resolv.conf

    nameserver 10.64.100.240

    nameserver 10.64.101.240

    Ensure you have backend access to the server before restarting the network interface. It's just good practice.

    Restart the networking services

    # systemctl restart network.service



    #QRadar
    #Support
    #SupportMigration


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