How To Install certmonger on Ubuntu 21.04

One-liner install command

For those in a hurry, here's a one-line installation command:

sudo apt-get update && sudo apt -y install certmonger

But if you are interested in the detailed steps with descriptions, the following information is for you.

What is certmonger and what are the ways to install it?

Before beginning this tutorial, you will need access to a server or computer running Ubuntu 21.04. This guide was written specifically with a server running Ubuntu 21.04 in mind, although it should also work on older, supported versions of the operating system.

Also, make sure you are running a regular, non-root user with sudo privileges configured on your server. When you have an account available, log in as your non-root user to begin.

There are several ways to install certmonger on Ubuntu 21.04. You can use (links are clickable):

In the following sections, we will describe each method in detail. You can choose one of them or refer to the recommended one.

Install certmonger using apt-get

First, update apt database with apt-get using the following command.

sudo apt-get update

After updating apt-get database, You can install certmonger using apt by running the following command:

sudo apt -y install certmonger

Install certmonger using apt

Because certmonger is available in Ubuntu 21.04’s default repositories, it is possible to install it from these repositories using the apt packaging system.

To begin, update apt database with apt using the following command.

sudo apt update

After updating apt database, You can install certmonger using apt by running the following command:

sudo apt -y install certmonger

Install certmonger using aptitude

If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Ubuntu 21.04. Update apt database with aptitude using the following command.

sudo aptitude update

After updating aptitude database, You can install certmonger by running the following command:

sudo aptitude -y install certmonger

How to upgrade (update) a single package certmonger using apt-get?

First, you will need to update packages index. Run update command as usual:

sudo apt-get update

Next, to upgrade only the certmonger, e.g. single package, you should use the following format with the apt-get command/apt command:

sudo apt-get --only-upgrade install certmonger

Note that this command will not install any new packages! If you wish to install the package if it doesn't exist you may leave out --only-upgrade part.

sudo apt-get install certmonger

How To Uninstall certmonger from Ubuntu 21.04

To uninstall only the certmonger package you can execute the following command:

sudo apt-get remove certmonger

Uninstall certmonger and all its dependencies

To uninstall certmonger and its dependencies that are no longer needed by Ubuntu 21.04, you can use the command below:

sudo apt-get -y autoremove certmonger

Remove certmonger with all configurations and data

To remove certmonger configuration and data from your system you can run the following purge command:

sudo apt-get -y purge certmonger

Remove certmonger completely (configurations, data and all of its dependencies)

And lastly, you can run the next command to remove absolutely everything related to certmonger package, e.g.: configurations, data and all of its dependencies. Just use this command:

sudo apt-get -y autoremove --purge certmonger

Extra info and code examples

Certmonger is a D-Bus -based service which attempts to simplify interaction with certifying authorities (CAs) on networks which use public-key infrastructure (PKI). If it knows the location of a certificate, certmonger can track the expiration date and notify you when the certificate is about to expire. If it has access to the corresponding private key and information about the CA which issued the certificate, certmonger can even attempt to automatically obtain a new certificate. Supports certificate and key storage in PEM or NSSDB formats. Can self-sign certificates, or can submit them to either certmaster or development versions of IPA.

Conclusion

You now have a full guide on how to install certmonger using apt, apt-get and aptitude tools. Also, we showed how to update as a single package and different ways to uninstall the certmonger from Ubuntu 21.04.

See also: