Bobcares

modprobe command not found – Causes and Fixes

by | Feb 6, 2020

Are you frustrated with the error “modprobe command not found”? We’ll help you to fix it.

Modprobe helps in the easy handling of loadable kernel modules. But, it often throws tricky errors.

At Bobcares, we often receive requests to fix these errors as part of our Server Management Services.

Today, let’s have a deep look at the modprobe and see how our Support Engineers fix this error for our customers.

 

A brief look at modprobe

Before discussing the error, let’s have a look at the modprobe.

Modprobe is a Linux program. It helps to add, remove and list modules from the kernel.

And, these loadable kernel modules extend the running kernel. Linux maintains a /lib/modules/$(uname-r) directory for these modules.

And, modprobe searches this directory and load the required module.

 

How we fix the error “modprobe command not found”?

Sometimes, while executing the modprobe command, we get a ‘command not found‘ error.

Let’s now discuss the various causes and how our Support Engineers eliminate this error easily.

 

1. Permission restrictions

Recently, one of our customers approached us with a modprobe error.

He searched for the a module module_name in /lib/modules/$(uname-r) directory.

Then, he tried to load the module using the modprobe command. But, he got the below error.

modprobe command not found

The problems finding the modprobe happens due to an unconfigured $PATH.

Our Support Engineers confirmed that the actual location of the modprobe binary was at /sbin/modprobe. On checking, we found that the user didn’t run the command as root.

Modprobe commands should always run as root. So, executing the command as root resolved the error.

sudo modprobe module_name

 

2. Case of containers

Similarly, executing modprobe command in containers will also return ‘command not found‘ error.

In containers, there is no isolation between the host and the application. Usually, containers that run on a machine usually share the host kernel.

So, these containers do not have kernels on their own. Thus, they return errors when using the modprobe command.

And for the same reason, such modprobe errors can happen in Docker containers, OpenVZ, LXC containers, etc.

 

[Need more assistance to fix this error?- We’re available 24/7.]

 

Conclusion

In short, the modprobe command not found error occurs usually when we execute the command as a non-user. In today’s writeup, we discussed how our Support Engineers fix this error for our customers easily.

PREVENT YOUR SERVER FROM CRASHING!

Never again lose customers to poor server speed! Let us help you.

Our server experts will monitor & maintain your server 24/7 so that it remains lightning fast and secure.

GET STARTED

var google_conversion_label = "owonCMyG5nEQ0aD71QM";

0 Comments

Submit a Comment

Your email address will not be published. Required fields are marked *

Never again lose customers to poor
server speed! Let us help you.

Privacy Preference Center

Necessary

Necessary cookies help make a website usable by enabling basic functions like page navigation and access to secure areas of the website. The website cannot function properly without these cookies.

PHPSESSID - Preserves user session state across page requests.

gdpr[consent_types] - Used to store user consents.

gdpr[allowed_cookies] - Used to store user allowed cookies.

PHPSESSID, gdpr[consent_types], gdpr[allowed_cookies]
PHPSESSID
WHMCSpKDlPzh2chML

Statistics

Statistic cookies help website owners to understand how visitors interact with websites by collecting and reporting information anonymously.

_ga - Preserves user session state across page requests.

_gat - Used by Google Analytics to throttle request rate

_gid - Registers a unique ID that is used to generate statistical data on how you use the website.

smartlookCookie - Used to collect user device and location information of the site visitors to improve the websites User Experience.

_ga, _gat, _gid
_ga, _gat, _gid
smartlookCookie
_clck, _clsk, CLID, ANONCHK, MR, MUID, SM

Marketing

Marketing cookies are used to track visitors across websites. The intention is to display ads that are relevant and engaging for the individual user and thereby more valuable for publishers and third party advertisers.

IDE - Used by Google DoubleClick to register and report the website user's actions after viewing or clicking one of the advertiser's ads with the purpose of measuring the efficacy of an ad and to present targeted ads to the user.

test_cookie - Used to check if the user's browser supports cookies.

1P_JAR - Google cookie. These cookies are used to collect website statistics and track conversion rates.

NID - Registers a unique ID that identifies a returning user's device. The ID is used for serving ads that are most relevant to the user.

DV - Google ad personalisation

_reb2bgeo - The visitor's geographical location

_reb2bloaded - Whether or not the script loaded for the visitor

_reb2bref - The referring URL for the visit

_reb2bsessionID - The visitor's RB2B session ID

_reb2buid - The visitor's RB2B user ID

IDE, test_cookie, 1P_JAR, NID, DV, NID
IDE, test_cookie
1P_JAR, NID, DV
NID
hblid
_reb2bgeo, _reb2bloaded, _reb2bref, _reb2bsessionID, _reb2buid

Security

These are essential site cookies, used by the google reCAPTCHA. These cookies use an unique identifier to verify if a visitor is human or a bot.

SID, APISID, HSID, NID, PREF
SID, APISID, HSID, NID, PREF