I'm passing the password to my sudo in ansible playbook like:

echo <password> | sudo -S su - <username>

It's working fine. But the problem here is in my output the password is visible.

Is there any way to hide the password or at least to encrypt it? My playbook is like this:

- name: Weblogic Server control
  hosts: "appserver"

  - name: Ansible copy file to remote server
      cmd: |
        echo "{{ansible_password}}" | sudo -S su - dmsc

        echo "{{ansible_password}}" | sudo -S su - dmsc << EOF
        cp /home/svc-rb_auto_non_prod/emc-dfs-demo.ear /local/apps/dmscsp/wls1213/user_projects/domains/scspqa_domain/servers/scspqa_admin/upload/emc-dfs-demo.ear
    register: shell_out

  - debug:
      var: shell_out


TASK [debug] ******************************************************************************************************
ok: [appserver] => {
    "shell_out": {
        "changed": true, 
        "cmd": [
        "delta": "0:00:00.004095", 
        "end": "2018-10-31 02:42:40.627875", 
        "failed": false, 
        "rc": 0, 
        "start": "2018-10-31 02:42:40.623780", 
        "stderr": "", 
        "stderr_lines": [], 
        "stdout": "siva123 | sudo -S su - ls EOF", 
        "stdout_lines": [
            "siva123 | sudo -S su - ls EOF"

You want the no_log: true attribute added to the task. This is described in the Ansible documentation and answered previously at https://serverfault.com/questions/681832/how-can-i-stop-ansible-from-writing-passwords-to-the-logfiles#766095

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