- Lab
- A Cloud Guru
Working with Kernel Modules
The Linux system provides a framework for loadable modules which can add or remove certain functionality without the need for a restart. In this lab, you will be tasked with installing and removing kernel modules, as well as displaying additional information about them.
Path Info
Table of Contents
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Challenge
Get a Count of the Current Installed Modules and Save It to /root/current_count.txt
Display all the loaded modules:
lsmod
Save the count of all the loaded modules to
/root/current_count.txt
:lsmod | wc -l > /root/current_count.txt
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Challenge
Remove the target_core_mod Module and All Its Dependencies
To remove the
target_core_module
, theiscsi_target_mod
dependency must be removed (the-v
option can be used to display additional information):modprobe -r iscsi_target_mod
Validate the modules have been removed:
lsmod | grep target
-
Challenge
Install the nfsd Module
Install the
nfsd
module using themodprobe
command (the-v
option can be used to display additional information):modprobe -v nfsd
Validate that the module was loaded:
lsmod | grep nfsd
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Challenge
Display the Dependencies for the nfsd Module and Save the Names to /root/dependencies.txt
Display information for the
nfsd
module:modinfo nsfd
Save the names of the dependencies to
/root/dependencies.txt
:modinfo nfsd | grep depends > /root/dependencies.txt
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Challenge
Get a Final Count of the Modules and Save It to /root/updated_count.txt
Add the output from
lsmod | wc -l
to the/root/updated_count.txt
file:lsmod | wc -l > /root/updated_count.txt
What's a lab?
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Follow along with the author’s guided walkthrough and build something new in your provided environment!
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