- A
The `ansible.cfg` path must be under `~/.ansible/plugins/filter_plugins`.
Why wrong: Incorrect. The `filter_plugins` path in `ansible.cfg` can be any valid directory, not necessarily under `~/.ansible/plugins/filter_plugins`.
- B
The filter plugin name must match the module name exactly.
Correct. In ansible-core 2.14, the filter plugin's filename must exactly match the filter name returned by the `filters()` method for proper discovery.
- C
The filter plugin is missing a `filters()` method.
Why wrong: Incorrect. The team verified that the `FilterModule` class with a `filters()` method is present.
- D
The filter plugin must be part of an Ansible collection because standalone filter plugins are deprecated.
Why wrong: Incorrect. Standalone filter plugins are deprecated but still work in ansible-core 2.14. The deprecation alone does not cause the filter to be 'no longer found'.
Ansible Filter Plugin Deprecation: Migrate to Collections in 2.14
This EX294 practice question tests your understanding of transform data with filters and plugins. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. A key principle to apply: filter plugin naming. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A DevOps team uses Ansible to manage a large fleet of web servers. They have a custom filter plugin, `custom_encrypt`, stored in `/opt/ansible/filter_plugins/custom_encrypt.py`. This filter works correctly in Ansible 2.9. After upgrading the control node to Ansible 2.14 (ansible-core 2.14), the filter is no longer found. The `ansible.cfg` includes `filter_plugins = /opt/ansible/filter_plugins` and the file permissions are 644. The team verified the Python file is valid and contains the correct `FilterModule` class with a `filters()` method. Which of the following is the most likely cause of the issue?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"most likely"Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
The filter plugin name must match the module name exactly.
In ansible-core 2.14, the filter plugin module name (the filename without .py) must exactly match the filter name defined in the `filters()` method. The plugin is stored as `custom_encrypt.py`, so the filter should be registered as `custom_encrypt`. If the plugin defines a filter with a different name (e.g., `encrypt`), it will not be found. This is a stricter requirement introduced in newer versions. Option A is incorrect because `filter_plugins` can point to any directory. Option C is incorrect because the team confirmed the `filters()` method exists. Option D is incorrect because standalone filter plugins are deprecated but still functional in 2.14; deprecation alone does not cause the filter to be 'no longer found'.
Key principle: Filter plugin naming
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The `ansible.cfg` path must be under `~/.ansible/plugins/filter_plugins`.
Why it's wrong here
Incorrect. The `filter_plugins` path in `ansible.cfg` can be any valid directory, not necessarily under `~/.ansible/plugins/filter_plugins`.
- ✓
The filter plugin name must match the module name exactly.
Why this is correct
Correct. In ansible-core 2.14, the filter plugin's filename must exactly match the filter name returned by the `filters()` method for proper discovery.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Filter plugin naming
- ✗
The filter plugin is missing a `filters()` method.
Why it's wrong here
Incorrect. The team verified that the `FilterModule` class with a `filters()` method is present.
- ✗
The filter plugin must be part of an Ansible collection because standalone filter plugins are deprecated.
Why it's wrong here
Incorrect. Standalone filter plugins are deprecated but still work in ansible-core 2.14. The deprecation alone does not cause the filter to be 'no longer found'.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Candidates often assume deprecation is the cause when a filter stops working, but the actual issue is often a naming mismatch or missing `__init__.py` in the plugin directory.
Detailed technical explanation
How to think about this question
Treat this as a scenario question. Identify the problem, the constraint, and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- Filter plugin naming
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Filter plugin naming
Real-world example
How this comes up in practice
A practitioner preparing for the EX294 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Filter plugin naming Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Review filter plugin naming, then practise related EX294 questions on the same topic to reinforce the concept.
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Transform data with filters and plugins — study guide chapter
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Transform data with filters and plugins practice questions
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FAQ
Questions learners often ask
What does this EX294 question test?
Transform data with filters and plugins — This question tests Transform data with filters and plugins — Filter plugin naming.
What is the correct answer to this question?
The correct answer is: The filter plugin name must match the module name exactly. — In ansible-core 2.14, the filter plugin module name (the filename without .py) must exactly match the filter name defined in the `filters()` method. The plugin is stored as `custom_encrypt.py`, so the filter should be registered as `custom_encrypt`. If the plugin defines a filter with a different name (e.g., `encrypt`), it will not be found. This is a stricter requirement introduced in newer versions. Option A is incorrect because `filter_plugins` can point to any directory. Option C is incorrect because the team confirmed the `filters()` method exists. Option D is incorrect because standalone filter plugins are deprecated but still functional in 2.14; deprecation alone does not cause the filter to be 'no longer found'.
What should I do if I get this EX294 question wrong?
Review filter plugin naming, then practise related EX294 questions on the same topic to reinforce the concept.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Filter plugin naming
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Last reviewed: Jun 24, 2026
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