How To Install fetch-crl on CentOS 8
Introduction
In this tutorial we learn how to install fetch-crl on CentOS 8.
What is fetch-crl
This tool and associated timer entry ensure that Certificate Revocation Lists (CRLs) are periodically retrieved from the web sites of the respective Certification Authorities. It assumes that the installed CA files follow the hash.crl_url convention.
We can use yum or dnf to install fetch-crl on CentOS 8. In this tutorial we discuss both methods but you only need to choose one of method to install fetch-crl.
Install fetch-crl on CentOS 8 Using dnf
Update yum database with dnf using the following command.
sudo dnf makecache --refresh
The output should look something like this:
CentOS Linux 8 - AppStream 43 kB/s | 4.3 kB 00:00
CentOS Linux 8 - BaseOS 65 kB/s | 3.9 kB 00:00
CentOS Linux 8 - ContinuousRelease 43 kB/s | 3.0 kB 00:00
CentOS Linux 8 - Extras 23 kB/s | 1.5 kB 00:00
CentOS Linux 8 - FastTrack 40 kB/s | 3.0 kB 00:00
CentOS Linux 8 - HighAvailability 36 kB/s | 3.9 kB 00:00
CentOS Linux 8 - Plus 24 kB/s | 1.5 kB 00:00
CentOS Linux 8 - PowerTools 50 kB/s | 4.3 kB 00:00
Extra Packages for Enterprise Linux Modular 8 - x86_64 13 kB/s | 9.2 kB 00:00
Extra Packages for Enterprise Linux 8 - x86_64 24 kB/s | 8.5 kB 00:00
Metadata cache created.
After updating yum database, We can install fetch-crl using dnf by running the following command:
sudo dnf -y install fetch-crl
Install fetch-crl on CentOS 8 Using yum
Update yum database with yum using the following command.
sudo yum makecache --refresh
The output should look something like this:
CentOS Linux 8 - AppStream 43 kB/s | 4.3 kB 00:00
CentOS Linux 8 - BaseOS 65 kB/s | 3.9 kB 00:00
CentOS Linux 8 - ContinuousRelease 43 kB/s | 3.0 kB 00:00
CentOS Linux 8 - Extras 23 kB/s | 1.5 kB 00:00
CentOS Linux 8 - FastTrack 40 kB/s | 3.0 kB 00:00
CentOS Linux 8 - HighAvailability 36 kB/s | 3.9 kB 00:00
CentOS Linux 8 - Plus 24 kB/s | 1.5 kB 00:00
CentOS Linux 8 - PowerTools 50 kB/s | 4.3 kB 00:00
Extra Packages for Enterprise Linux Modular 8 - x86_64 13 kB/s | 9.2 kB 00:00
Extra Packages for Enterprise Linux 8 - x86_64 24 kB/s | 8.5 kB 00:00
Metadata cache created.
After updating yum database, We can install fetch-crl using yum by running the following command:
sudo yum -y install fetch-crl
How To Uninstall fetch-crl on CentOS 8
To uninstall only the fetch-crl package we can use the following command:
sudo dnf remove fetch-crl
fetch-crl Package Contents on CentOS 8
/etc/fetch-crl.conf
/etc/fetch-crl.d
/etc/grid-security
/etc/grid-security/certificates
/usr/lib/systemd/system/fetch-crl.service
/usr/lib/systemd/system/fetch-crl.timer
/usr/sbin/clean-crl
/usr/sbin/fetch-crl
/usr/share/doc/fetch-crl
/usr/share/doc/fetch-crl/CHANGES
/usr/share/doc/fetch-crl/NOTICE
/usr/share/doc/fetch-crl/README
/usr/share/doc/fetch-crl/fetch-crl.cnf.example
/usr/share/licenses/fetch-crl
/usr/share/licenses/fetch-crl/LICENSE
/usr/share/man/man8/clean-crl.8.gz
/usr/share/man/man8/fetch-crl.8.gz
/var/cache/fetch-crl
References
Summary
In this tutorial we learn how to install fetch-crl on CentOS 8 using yum and dnf.