EX294 Coordinate rolling updates Practice Question
An OpenShift rolling update is failing because new pods crash immediately. Which parameter automatically triggers a rollback if no progress is made?
⚠ Common exam trap
A common mix-up: candidates confuse `progressDeadlineSeconds` with `minReadySeconds`, thinking that a readiness check alone will trigger a rollback, but `minReadySeconds` only delays availability without initiating a rollback.
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
✓
progressDeadlineSeconds
The `progressDeadlineSeconds` parameter specifies the maximum duration (in seconds) that a deployment can make no progress before it is considered to have failed. When this deadline is exceeded, the deployment controller automatically triggers a rollback to the previous revision. This is the correct parameter for automatically rolling back a failed rolling update where new pods crash immediately.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
revisionHistoryLimit
Why it's wrong here
Limits the number of old ReplicationControllers kept for rollback.
- ✗
maxSurge
Why it's wrong here
Limits extra pods but does not trigger rollback.
- ✓
progressDeadlineSeconds
Why this is correct
If the deployment does not progress within this time, it is considered failed and rolls back.
- ✗
maxUnavailable
Why it's wrong here
Limits unavailable pods but does not trigger rollback.
- ✗
minReadySeconds
Why it's wrong here
Sets the time a pod must be ready before considered available.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This EX294 practice question is part of Courseiva's free Red Hat certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the EX294 exam.