How To
Summary
This article provides instructions on how to modify the DNS settings of a QRadar Appliance.
Steps
The administrators who want to modify the DNS settings of a QRadar Appliance use one of the following methods:
Note: Networking changes to a QRadar Appliance must be done using the qchange_netsetup script.
- Modify the DNS settings by using the qchange_netsetup script.
- Modify the DNS settings manually:
Note: the following is not supported, and provided as a curtesy.- Modify the /etc/resolv.conf file to use the new DNS settings by using vim:
vim /etc/resolv.conf
The lines to modify in the resolv.conf file are:nameserver <IP>
- Modify the ifcfg file for the desired interface to use the new DNS settings by using vim:
Note: This step guarantees that the changes will not be overwritten during a patch.vim /etc/sysconfig/network-scripts/ifcfg-$(cat /etc/management_interface)
The lines to modify in the ifcfg file are:DNS1=<IP> DNS2=<IP> PEERDNS=no
Result
The administrator has changed the DNS settings of a QRadar Appliance. If problems are found during this process, use qchange_netsetup instead.
- Modify the /etc/resolv.conf file to use the new DNS settings by using vim:
Document Location
Worldwide
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Document Information
Modified date:
24 May 2024
UID
ibm17152531