Table of contents
1.
Introduction
2.
Ansible Vault
3.
Ansible vault operation
4.
Using Ansible Vault
5.
Encrypting an Existing File
6.
Creating an Encrypted File
7.
Editing Encrypted Files
8.
Rekeying Encrypted Files
9.
Encrypting Unencrypted Files
10.
Decrypting Encrypted Files
11.
Viewing Encrypted Files
12.
Decrypt a running playbook
13.
Frequently Asked Questions
13.1.
What are the two important files in Ansible?
13.2.
How many nodes can Ansible manage?
13.3.
What does Ansible's inventory file mean?
13.4.
How do you check Ansible syntax?
14.
Conclusion
Last Updated: Mar 27, 2024

Ansible Vault

Author SHIVANGI MALL
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Introduction

Ansible can be used to provide the underlying infrastructure of your environment. Virtualized hosts and hypervisors, network devices, and bare metal servers. It can also install services, and add compute hosts. provision resources, services, and applications inside of your cloud. In this article, the reader will learn about the ansible vault. Ansible vault operation, how to encrypt an existing file. How to create an encrypted file, and edit encrypted files. Encrypt unencrypted files, and view encrypted files.  

Ansible

Ansible Vault

Users can encrypt variables and data structures. Inside Ansible projects using the Ansible Vault functionality. This gives users the opportunity to protect any sensitive information. Secrets that are required to successfully run Ansible plays. But should not be made available to the general public, such as private keys or passwords. When the key is given, Ansible automatically decrypts the vault-encrypted information during runtime.
 

Both the Ansible and Ansible playbook commands. To carry out ad hoc activities and structured playbooks, respectively, offer support for decrypting vault-encrypted content at runtime. In order to merge these secrets with standard Ansible data.

The implementation of Ansible Vault uses file-level granularity. It means that files are either fully encrypted or not. It offers a symmetric encryption key. To a user-supplied password using the AES256 algorithm.

This is advantageous from a usability perspective. It means the same password is used to encrypt and decrypt the content. Any vault-encrypted files that Ansible discovered. While performing a task or playbook can be recognized and decrypted.

Users can only provide one password to Ansible at the time of writing, despite a proposal to change this. It implies that a password must be shared by all of the involved encrypted files.

Ansible vault operation

Ansible Vault carries out a number of tasks. Particularly, it can

  • Encrypt a file
  • Decrypt a file
  • View a file that is encrypted without decrypting it
  • Edit a secure file.
  • Create a secure file.
  • Make the encrypted key or reset it.

Using Ansible Vault

Encrypting variable files is the most basic function of the Ansible vault. Any YAML file can be encrypted, but the following ones are the most frequently used ones:
 

  • The defaults/main.yml file for a role
  • The vars/main.yml file for a role
  • The group vars directory's files
  • Any additional file that contains variables

Encrypting an Existing File

Using the Ansible Vault, you can encrypt a typical plaintext variable file. You can specify the password required to decrypt it afterward.

#encrypt a role's defaults/main.yml file  

ansible-vault encrypt defaults/main.yml  

>New vault password:   

>Confirm new vault password:  

>Encryption successful  

You will receive two password prompts from the ansible-vault command. The file will then be encrypted after that.

Creating an Encrypted File

You will receive two password prompts from the ansible-vault command. The file will then be encrypted after that.

The encrypted file is created using the ansible-vault create command.

# ansible-vault create vault.yml

Following the entry of this command. A password and a location for your material will be requested. Use the cat command to see if the file has been encrypted.

To create encrypted files using —the vault id, use the command below.

# ansible-vault create --vault-id password@prompt vault.yml

Editing Encrypted Files

Using the ansible-vault edit command, you can alter an encrypted file if you want to. Using this command will enable you to edit the file and decrypt it to a temporary file.

$ansible-vault edit <file name> 

The vault password entry prompt will appear. When the file has been encrypted. A VI editor will open, allowing you to make the necessary adjustments. After saving the modifications, delete the temporary file.

Rekeying Encrypted Files

Using the rekey command, you can update the password for a vault or a file that has been encrypted with a vault.

$ansible-vault rekey <file1> <file2> <file3>  

The aforementioned command can rekey many data files at once and will request both the old and new passwords.

Encrypting Unencrypted Files

Use the ansible-vault encrypt command if you want to encrypt already-existing files. Multiple files may be processed simultaneously using this command.

$ansible-vault encrypt <file1> <file2> <file3>

Decrypting Encrypted Files

Run the ansible-vault decrypt command to permanently decrypt any existing files that you no longer want to keep encrypted. They will be saved to the disc in plain text using this command.

$ansible-vault decrypt <file1> <file2> <file3>  

Viewing Encrypted Files

The ansible-vault view command can be used to see an encrypted file's contents without altering it.

$ansible-vault view <file1> <file2> <file3>

Decrypt a running playbook

You often ask for the playbook's password in order to decrypt it while it is active.

# ansible-playbook --ask-vault-pass email.yml

Frequently Asked Questions

What are the two important files in Ansible?

You should think about the following three key files for Ansible. Ansible.cfg file, the main file, and the host/inventory file.

How many nodes can Ansible manage?

Ansible-applicability pulls vary depending on the use case. But in general, topologies with fewer than 500 nodes nearly never require it. Whereas topologies with more than 2000 nodes frequently do.

What does Ansible's inventory file mean?

The hosts and groups of hosts that the commands, modules, and tasks in a playbook depend on. They are specified in the Ansible inventory file.

How do you check Ansible syntax?

We can use  $ ansible-playbook <playbook. yml> --syntax-check command to check the playbook for syntax errors.

Conclusion

We covered the Ansible Vault in this article. We hope this article helps you to learn something new. And if you're interested in learning more, see our posts on Ansible Interview Questions Part 1Ansible Interview Questions Part 212 Best DevOps Tools To Get Acquainted With, and DevOps Interview Questions.

Visit our practice platform.  Coding Ninjas Studio to practice top problems. Attempt mock tests, read interview experiences, and much more.! Feel free to upvote and share this article if it has been helpful for you.

 

 

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