Need assistance to run tasks/module on several switch simultaneously (my script currently checks 1 device at a time)

[Vikram S]

Below is the script i have written to perform MD5 verification for stacked switch 2. Problem with this script is that iam saving output of MD5 verification command to a custom varriable called 'md5_flash2' using register and then checking if correct md5 value is present there.

Since iam using register, so only the output of last device will get saved (and over-write previous data) in this custom variable. So iam forced to check MD5 verification for 1 device at a time. Is there any alternate way to write script to do do MD5 verification (and other tasks) simultaneously for several devices?

 - name: DO MD5 VERIFICATION FOR FLASH 2 AND END PLAYBOOK IF IT FAILS

      block:

      - ios_command:

          commands: "verify /md5 flash2:/c2960x-universalk9-mz.152-7.E3/c2960x-universalk9-mz.152-7.E3.bin"

        vars:

          ansible_command_timeout: 360

        register: md5_flash2

      - debug:

          msg: MD5 VERIFICATION IS SUCCESSFUL FOR FLASH 2

        when: "'f148fc860a1d4d08532bc616724e632d' in md5_flash2.stdout[0]"

      - meta: end_host

        when: "'f148fc860a1d4d08532bc616724e632d' not in md5_flash2.stdout[0]"

      when:

        - "'Switch 02' in show_version.stdout[0]"

[Teofil Mihance]

Hi Vikram, 

Find here an ansible role that includes among others a MD5 checksum task, file_check.yml and checksum.py

It is a draft but is working fine.

Best regards

Teo

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