Ansible sudo su become method

N'est pas autorisé

sudo -u testplop ls

Mais est autorisé :

sudo su - testplop

/etc/sudoers.d/userc1

User_Alias      USER_T_USERC1=userc1
 
Cmnd_Alias      CMND_USERC1=/bin/su - oracle, \
                        /bin/su - testplop
 
Defaults:CMND_USERC1 !requiretty
 
USER_T_USERC1     ALL= EXEC: NOPASSWD: CMND_USERC1

Alors que ça serait tellement plus propre de faire :

Runas_Alias RUNAS_DBA_ALL = oracle, testplop
#USER_T_USERC1 ALL= (testplop) EXEC: NOPASSWD: ALL
USER_T_USERC1 ALL= (RUNAS_DBA_ALL) EXEC: NOPASSWD: ALL

Solution 1

Utiliser le become plugin community.general.sudosu

Pas applicable dans notre cas, et nous avons l'erreur :

fatal: [test-ansible]: FAILED! => {"msg": "Missing community.general.sudosu password"}

Car si il est possible de faire :

sudo su - testplop

Il n'est pas possible de faire :

sudo su -l testplop -c 'ls'

Il faudrait la conf sudoers suivantes :

Cmnd_Alias      CMND_USERC1=/bin/su -l oracle *, \
                        /bin/su -l testplop *

Cela n'est pas sans poser des problèmes de sécurité.

Voici la conf

ansible-galaxy collection install community.general

play.yml

#!/usr/bin/ansible-playbook
---

- name: test sudosu
  hosts: srvtest
  gather_facts: false
  become_method: community.general.sudosu
  become_user: testplop
  become: true

  tasks:

    - name: test
      command: id
      register: cmd_ls

    - name: test
      debug:
        var: cmd_ls.stdout_lines

Solution 2

Source : https://github.com/ansible/ansible/issues/12686

/usr/local/bin/sudosu.sh

#!/bin/bash
#
#sudosu.sh "user" -c "cmd"
 
if [ $# -lt 3 ]; then
    echo 'Not enough arguments: sudosu.sh "user" -c "cmd"' >&2
    exit 1
fi
 
if [ x"-c" != x"$2" ]; then
    echo 'Wrong 2nd arg: sudosu.sh "user" -c "cmd"' >&2
    exit 1
fi
 
printf '%s\n' "$3" | sudo su - "$1"

play.yml

#!/usr/bin/ansible-playbook
---

- name: test
  hosts: test-ansible
  gather_facts: false
  become_method: su
  # become_flags: "su -c"
  # become_flags: "-H -S -n"   # default value
  become_exe: /usr/local/bin/sudosu.sh
  become_user: testplop
  become: true

  tasks:

    - name: test
      command: id
      register: cmd_ls

Autres

ansible-doc -t become -l