Question: how to kdump in redhat?
Answer: Step:1 Install 'kexec-tools' using yum command. Step:2 Update the GRUB2 file to Reserve Memory for Kdump kernel. Step:3. ...  Step:4 Start and enable kdump service. Step:5 Now Test Kdump by manually crashing the system. Step:6 Use 'crash' command to analyze and debug crash dumps.