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Modifying a Parameter in kdump
Procedure
- Log in to the server OS as the root user.
- Run the following command to go to the /etc/sysconfig directory.
# cd /etc/sysconfig
- Run the following command to modify the kdump file.
# vi kdump
In the kdump file, change the value of KDUMP_CPUS from 1to the number of current CPU cores. For example, if the current CPU model is E7 8880 and the number of CPU cores is 18, modify KDUMP_CPUS="1" to KDUMP_CPUS="18". See the content in red in Figure 5-34.
- Save the modification and exit.
- Run the systemctl enable kdump.service command.
- Restart the server.
