Ansible package warning when using sudo

Question

I was following this doc to install shiny package in RedHat 7.3. The command provided in the doc is:

$ sudo su - \
-c "R -e \"install.packages('shiny', repos='https://cran.rstudio.com/')\""

In Ansible, I wrote it like this:

- name: Installing Shiny Packages
    shell: sudo su - -c "R -e \"install.packages('shiny', repos='https://cran.rstudio.com/')\""
   #when: install_R|changed

I am getting a warning when I run my playbook:

TASK [Installing Shiny Packages] ***********************************************
 [WARNING]: Consider using 'become', 'become_method', and 'become_user' rather
than running sudo

changed: [test]

Please let me know how to write this in ansible so that I can avoid the warning.

Answer 1

It is probably because of the outdated sudo usage from version 1.9. From the official Ansible documentation.

Before 1.9 Ansible mostly allowed the use of sudo and a limited use of su to allow a login/remote user to become a different user and execute tasks, create resources with the 2nd user’s permissions. As of 1.9, become supersedes the old sudo/su, while still being backwards compatible.

You can remove it by using the become module which allows you to 'become' another user, different from the user that logged into the machine (remote user). You need to set to true to activate privilege escalation.

name: Installing Shiny Packages
   shell: R -e "install.packages('shiny', repos='https://cran.rstudio.com/')"
become: true