CODEWITHSUNDEEP
azure-devopscroncontinuous-integrationcontinuous-deploymentazure-pipelines-yaml
Sjekkel
Sjekkel

Reputation: 23

Azure YAML Pipeline schedule to run on the last Sunday of the month at 4 AM

I want my Azure YAML pipeline to run on every last Sunday of the month at 4 AM. I currently have the following cronjob/schedule in my pipeline: current cron job

But this one runs every Sunday at 4 AM, which is way too often.

I have tried a couple of cronjobs already but none of them seem to do what I want:

I used Crontab.guru to check when these jobs will run. For example, 0 4 25-31 1-12/2 Sun, generates the following text: Crontab.guru description

To me it sounds like it will run based on two conditions:

Is it even possible? Or does it require any scripting to implement this in an Azure YAML Pipeline?

Thank you!

Upvotes: 2

Views: 1082

Answers (2)

KazM
KazM

Reputation: 382

I believe you can use the following cron:

0 4 25-31 * */7

Based on this article: https://blog.healthchecks.io/2022/09/schedule-cron-job-the-funky-way/

Upvotes: 0

Ziyang Liu-MSFT
Ziyang Liu-MSFT

Reputation: 5296

Cron syntax does not support “last Sunday of the month” directly. You can add a script at the start of your pipeline that checks if today is the last Sunday of the month. If not, it exits the pipeline early. Here’s an example for your reference:

trigger:
- none

schedules:
- cron: "0 4 * * Sun"
  displayName: Monthly Pipeline Run
  branches:
    include:
    - main
  always: true

pool:
  vmImage: ubuntu-latest

steps:
- script: |
    # Get the last day of the month
    last_day=$(date -d "$(date +'%Y%m01') +1 month -1 day" "+%d")
    # Get today's date
    today=$(date +'%d')
    # Check if today is the last Sunday of the month
    if [ $((10#$today + 7)) -gt $((10#$last_day)) ]; then
      echo "Today is the last Sunday of the month. Continue with the pipeline."
      exit 0
    else
      echo "Today is not the last Sunday of the month. Stop the pipeline."
      exit 1
    fi
  displayName: 'Check if today is the last Sunday of the month'

The pipeline will be triggered every Sunday at 4:00 AM UTC, but the steps you define will only be run on the last Sunday of each month.

Upvotes: 0

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