How to resolve [Errno 13] Permission denied error when running shell scripts in ansible tasks?

How to resolve [Errno 13] Permission denied error when running shell scripts in ansible tasks?

Lets see ansible playbook to run shell scripts and display output file content which is generated via shell scripts.

To invoke shell scripts file, lets try with command ansible module like below,

---
- name: Run shell scripts on local machine
  hosts: localhost
  tasks:
    - name: run get_host_name.sh
      command: ". /home/user2/ansible/test_shell/get_host_name.sh"

    - name: read file content
      command: "cat /home/user2/ansible/shell_file"
      register: out

    - name: Print the msg
      debug:
    	msg: "{{ out.stdout }}"

Shell scripts file content '/home/user2/ansible/test_shell/get_host_name.sh',

#!/bin/bash

echo $(hostname -f) > shell_file

$ ansible-playbook run-shell-scripts.yml

PLAY [Run shell scripts on local machine] ***********************************************************************************************************************************

TASK [Gathering Facts] ******************************************************************************************************************************************************
ok: [localhost]

TASK [run get_host_name.sh] *************************************************************************************************************************************************
fatal: [localhost]: FAILED! => {"changed": false, "cmd": ". /home/user2/ansible/test_shell/get_host_name.sh", "msg": "[Errno 13] Permission denied: b'.'", "rc": 13}

PLAY RECAP ******************************************************************************************************************************************************************
localhost              	: ok=1	changed=0	unreachable=0	failed=1	skipped=0	rescued=0	ignored=0   

Raised permission denied error when using command ansible module to run shell scripts as mentioned in above ansible playbook.

Lets see detailed error using -vvv option when running ansible playbook,

TASK [run get_host_name.sh] *************************************************************************************************************************************************
task path: /home/user2/ansible/run-shell-scripts.yml:5

The full traceback is:
  File "/tmp/ansible_command_payload_1_vbk9ne/ansible_command_payload.zip/ansible/module_utils/basic.py", line 2687, in run_command
	cmd = subprocess.Popen(args, **kwargs)
  File "/usr/lib64/python3.6/subprocess.py", line 729, in __init__
	restore_signals, start_new_session)
  File "/usr/lib64/python3.6/subprocess.py", line 1364, in _execute_child
	raise child_exception_type(errno_num, err_msg, err_filename)
fatal: [localhost]: FAILED! => {
	"changed": false,
	"cmd": ". /home/user2/ansible/test_shell/get_host_name.sh",
	"invocation": {
    	"module_args": {
        	"_raw_params": ". /home/user2/ansible/test_shell/get_host_name.sh",
        	"_uses_shell": false,
        	"argv": null,
        	"chdir": null,
        	"creates": null,
        	"executable": null,
        	"removes": null,
        	"stdin": null,
        	"stdin_add_newline": true,
        	"strip_empty_ends": true,
        	"warn": true
    	}
	},
	"msg": "[Errno 13] Permission denied: b'.'",
	"rc": 13
}

How to fix permission denied error when running shell scripts file in ansible playbook?

We have other ansible module 'shell', lets try running shell scripts using shell ansible module instead of command module,

---
- name: Run shell scripts on local machine
  hosts: localhost
  tasks:
    - name: run get_host_name.sh
      shell: ". /home/user2/ansible/test_shell/get_host_name.sh"

    - name: read file content
      command: "cat /home/user2/ansible/shell_file"
      register: out

    - name: Print the msg
      debug:
    	msg: "{{ out.stdout }}"

Lets run the ansible playbook,

Output:

$ ansible-playbook run-shell-scripts.yml

PLAY [Run shell scripts on local machine] ***********************************************************************************************************************************

TASK [Gathering Facts] ******************************************************************************************************************************************************
ok: [localhost]

TASK [run get_host_name.sh] *************************************************************************************************************************************************
changed: [localhost]

TASK [read file content] ****************************************************************************************************************************************************
changed: [localhost]

TASK [Print the msg] ********************************************************************************************************************************************************
ok: [localhost] => {
	"msg": "mymachine-1.local"
}

PLAY RECAP ******************************************************************************************************************************************************************
localhost              	: ok=4	changed=2	unreachable=0	failed=0	skipped=0	rescued=0	ignored=0   

Now permission denied error is resolved and shell scripts executed as expected and hostname is displayed in ansible playbook tasks.

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