Background
Let us see whether we can successfully configure Comodo AV on our CentOS Linux box.
The configuration tool that that we will be attempting to use is called /opt/COMODO/post_setup.sh.
Error Message
Unfortunately on running /opt/COMODO/post_setup.sh, we received an error message.
The error message reads
Image
Textual
Build the RedirFS kernel modules for real-time protection... Then linux kernel source or linux kernel headers for your current kernel version 4.18.0-383.el8.x86_64 can not be found. Please install the kernel source or kernel headers for 4.18.0-383.el8.x86_64, then run this script again. /opt/COMODO/post_setup.sh: line 415: make: command not found /opt/COMODO/post_setup.sh: line 416: make: command not found modprobe: FATAL: Module redirfs not found in directory /lib/modules/4.18.0-383.el8.x86_64 RedirFS kernel modules installation failed.
Remediation
Outline
- Installation
- DNF
- List Product
- Install Product
- Inquire Product
- DNF
- Configure
- Comodo AV
Installation
DNF
List Product
Objective
Determine whether our targeted package is already installed.
BTW, the name of our intended is kernel-headers.
Syntax
sudo dnf list [binary]
Sample
sudo dnf list kernel-headers
Output
Image
Textual
>sudo dnf list kernel-headers [sudo] password for dadenijiLocal: Last metadata expiration check: 0:02:30 ago on Wed 17 Aug 2022 06:42:38 PM PDT. Available Packages kernel-headers.x86_64 4.18.0-408.el8 baseos >
Explanation
Our package is marked “available“.
Install Product
Objective
Attempt to install our package ( kernel-headers).
We will be using the dnf tool to perform the installation.
Syntax
sudo dnf install [binary]
Sample
sudo dnf -y install kernel-headers
Output
Image
Textual
>sudo dnf -y install kernel-headers [sudo] password for dadenijiLocal: Last metadata expiration check: 0:16:15 ago on Wed 17 Aug 2022 06:42:38 PM PDT. Dependencies resolved. ============================================================================================================================================= Package Architecture Version Repository Size ============================================================================================================================================= Installing: kernel-headers x86_64 4.18.0-408.el8 baseos 9.8 M Transaction Summary ============================================================================================================================================= Install 1 Package Total download size: 9.8 M Installed size: 5.2 M Downloading Packages: kernel-headers-4.18.0-408.el8.x86_64.rpm 1.5 MB/s | 9.8 MB 00:06 --------------------------------------------------------------------------------------------------------------------------------------------- Total 1.4 MB/s | 9.8 MB 00:07 Running transaction check Transaction check succeeded. Running transaction test Transaction test succeeded. Running transaction Preparing : 1/1 Installing : kernel-headers-4.18.0-408.el8.x86_64 1/1 Verifying : kernel-headers-4.18.0-408.el8.x86_64 1/1 Installed products updated. Installed: kernel-headers-4.18.0-408.el8.x86_64 Complete!
Inquire Product
Syntax
sudo dnf list [binary]
Sample
sudo dnf list kernel-headers
Output
Image
Textual
>sudo dnf list kernel-headers Last metadata expiration check: 0:19:44 ago on Wed 17 Aug 2022 06:42:38 PM PDT. Installed Packages kernel-headers.x86_64 4.18.0-408.el8 @baseos >
Explanation
Our package is marked “installed“.
Configuration
Comodo
Post Install Script
Syntax
/opt/COMODO/post_setup.sh
Sample
echo YES | sudo /opt/COMODO/post_setup.sh
Output
Image
Textual
Build the RedirFS kernel modules for real-time protection... Then linux kernel source or linux kernel headers for your current kernel version 4.18.0-383.el8.x86_64 can not be found. Please install the kernel source or kernel headers for 4.18.0-383.el8.x86_64, then run this script again. make -C /lib/modules/`uname -r`/build M=/tmp/driver/redirfs modules make[1]: *** /lib/modules/4.18.0-383.el8.x86_64/build: No such file or directory. Stop. make: *** [Makefile:3: all] Error 2 make -C /lib/modules/`uname -r`/build M=/tmp/driver/redirfs modules_install make[1]: *** /lib/modules/4.18.0-383.el8.x86_64/build: No such file or directory. Stop. make: *** [Makefile:8: install] Error 2 modprobe: FATAL: Module redirfs not found in directory /lib/modules/4.18.0-383.el8.x86_64 RedirFS kernel modules installation failed. The cmdagent stopped successfully! The cmdagent started successfully! The cmgdaemon stopped successfully! The cmgdaemon started successfully! COMODO Antivirus is successfully configured, you can start it from Menu or Desktop. >
Explanation
It is a bit easy to miss it within the hoopla that our Comodo services ( cmdagent and cmgdaemon ) restarted successfully.
Yet a careful read suggests failures on a couple of important steps.
The failing steps are:-
make -C /lib/modules/`uname -r`/build M=/tmp/driver/redirfs modules
make -C /lib/modules/`uname -r`/build M=/tmp/driver/redirfs modules_install
Thankfully, we received informing error messages.
For the compilation, our error reads:-
make[1]: *** /lib/modules/4.18.0-383.el8.x86_64/build: No such file or directory. Stop.
For the install, our error reads:-
modprobe: FATAL: Module redirfs not found in directory /lib/modules/4.18.0-383.el8.x86_64
Summary
Who would have thought?
But, you in fact need a working knowledge of the C language to install an AV on Linux.
You need to have make installed.
Kernel headers.
And, God knows what else.
Learning in the Open 