getting error when trying to use 'at' module to schedule a script

[Vikram S]

I tried to schdule a script to be run at a particular time as per the instruction in documentation for 'at' module. However iam getting below error. Not sure what iam doing wrong, please guide.

First, i wrote a script which references another script that need to be executed in 5 minutes. Both scripts are in same directory. However when i run this script, it shows below error:

i wonder if 'hosts: TESTFIREWALL' is needed as iam not running this script on a remote host but i tried adding and removing it yet got error on both occassions.

---

- name: PLAYBOOK

  hosts: TESTFIREWALL

  serial: 1

  gather_facts: false

  connection: network_cli

  vars:

    ansible_network_os: asa

  tasks:

    - name: Schedule a command to execute in 2 minutes

      at:

        script_file: firewallrules.yaml

        count: 2

        units: minutes

ERROR:

TASK [Schedule a command to execute in 5 minutes] ******************************************************************************************************************************************* fatal: [TESTFIREWALL]: FAILED! => {"ansible_facts": {"discovered_interpreter_python": "/usr/bin/python"}, "changed": false, "msg": "Failed to find required executable at in paths: /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"}

Below is the firewallrules.yaml script that is referenced in above script:

---

- name: PLAYBOOK

  hosts: TESTFIREWALL

  serial: 1

  gather_facts: false

  connection: network_cli

  vars:

    ansible_network_os: asa

  tasks:

    - name: Gather all legacy facts

      cisco.asa.asa_facts:

        gather_subset: hardware

Thanks,

Vikram

[Erik Godding Boye]

Is at installed on your hosts?

https://docs.ansible.com/ansible/2.5/modules/at_module.html#requirements

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[Melvin Satheesan]

It seems environment issue. Find the 'at' command location and export to the binary path. 

[Vikram S]

Hi Erik,

no, i wanted to schedule a script to be run on a cisco switch/firewall (network device). i don't think 'at' module can be installed on a network device.

so is there any other way i can schedule script to be run in device in below format?

2960 switch-1 - run 2960upgrade.yaml - run at 2:30 pm

3650 switch - 3650upgrade.yaml - run at 3:30 pm

2960 switch-2 - 2960upgrade.yaml - run at 4:30 pm

Thanks,

Vikram

[Melvin Satheesan]

Check kron module, it's similar to at. 

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[Vikram S]

Hi,

After going tghrough documentation for cron module, i doubt if it would help in scheduling script to be executed in network devices. Are you sure it helps with scheduling for scisco network devices?

Regards,

Vikram

[rajthecomputerguy]

We cannot execute any script on network devices, execution will happen only in the Ansible server . The cron job will only do the scheduling job.