Sysinit, Logging, and Tuning Review Questions

Q. The systemd command may be used to rebuild a new kernel. True or False? A. False.

Q. Which command is used to manage system services? A. The systemctl command.

Q. Which configuration file must be modified to ensure journal log entries are stored persistently? A. /etc/systemd/journald.conf

Q. What is the PID of the systemd process? A. The PID of the systemd process is 1.

Q. What is a target in systemd? A. A target is a collection of units.

Q. You need to append a text string “Hello world” to the system log file. What would be the command to achieve this? A. logger -i "Hello world"

Q. What is the recommended location to store custom log configuration files? A. /etc/rsyslog.d/

Q. What would the command systemctl list dependencies crond do? A. Display all dependent units associated with the specified service.

Q. Name the two directory paths where systemd unit files are stored. A. /etc/systemd/system/ and /usr/lib/systemd/system/

Q. What would you run to identify the recommended tuning profile for the system? A. tuned-adm recommend

Q. What would the command systemctl get-default do? A. Reveal the current default boot target.

Q. systemd starts multiple services concurrently during system boot. True or False? A. True.

Q. What is the name and location of the boot log file? A. /var/log/boot.log

Q. Which systemctl subcommand is executed after a unit configuration file has been modified to apply the changes? A. The daemon-reload subcommand.

Q. Which other logging service complements the rsyslog service? A. The systemd-journald service.

Q. A RHEL system is booted up. You want to view all messages that were generated during the boot process. Which log file would you look at? A. The /var/log/boot.log file.

Q. What would the command systemctl restart rsyslog do? A. The command provided will restart the rsyslog service.

Q. What are the two common systemd targets production RHEL servers are typically configured to run at? A. The two common systemd boot targets are multi-user and graphical.

Q. By default, log files are rotated automatically every week. True or False? A. True.