synchronize ignores ansible_ssh* when delegate_to is used

[skwde]

SUMMARY

When delegate_to is used, the ansible_ssh* variables from the inventory are ignored even when use_ssh_args: true.

ISSUE TYPE

• Bug Report

COMPONENT NAME

ansible.posix.synchronize

ANSIBLE VERSION

ansible [core 2.16.3]
  config file = /etc/ansible/ansible.cfg
  configured module search path = ['~/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /opt/mambaforge/envs/ansible/lib/python3.12/site-packages/ansible
  ansible collection location = ~/.ansible/collections:/usr/share/ansible/collections
  executable location = /opt/mambaforge/envs/ansible/bin/ansible
  python version = 3.12.1 | packaged by conda-forge | (main, Dec 23 2023, 08:03:24) [GCC 12.3.0] (/opt/mambaforge/envs/ansible/bin/python3.12)
  jinja version = 3.1.3
  libyaml = True

COLLECTION VERSION

Collection    Version
------------- -------
ansible.posix 1.5.4  
community.general 8.3.0 

CONFIGURATION

COLLECTIONS_PATHS(/etc/ansible/ansible.cfg) = ['~/.ansible/collections', '/usr/share/ansible/collections']
CONFIG_FILE() = /etc/ansible/ansible.cfg
DEFAULT_FILTER_PLUGIN_PATH(/etc/ansible/ansible.cfg) = ['~/.ansible/plugins/filter', '/usr/share/ansible/plugins/filter']
DEFAULT_ROLES_PATH(/etc/ansible/ansible.cfg) = ['~/.ansible/roles', '/usr/share/ansible/roles', '/etc/ansible/roles']
EDITOR(env: EDITOR) = vim
GALAXY_COLLECTION_SKELETON_IGNORE(/etc/ansible/ansible.cfg) = ['^.git$', '^.*/.git_keep$', '^.*/.gitkeep$']

OS / ENVIRONMENT

CentOS7, Rocky8, Rocky9

STEPS TO REPRODUCE

The hosts.yml

all:
  hosts:
    jump:
    dest:
    src:
      ansible_ssh_common_args: "-J jump.host"

and the playbook

- name: Test stuff
  gather_facts: false
  hosts: src

  tasks:
    - name: Sync file to dest
      ansible.posix.synchronize:
        mode: pull
        src: /tmp/file
        dest: /tmp/file
        use_ssh_args: true
      delegate_to: dest
      become: true

EXPECTED RESULTS

The resulting rsync command should include -J jump.host in the --rsh option.

ACTUAL RESULTS

The ansible_ssh* variables set in hosts.yml are ignored.
Consequently the play fails.

fatal: [src -> dest]: FAILED! => changed=false 
  cmd: /bin/rsync --delay-updates -F --compress --archive --rsh='/bin/ssh -S none -i /root/.ssh/id_rsa -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -C -o ControlMaster=auto -o ControlPersist=60s -o StrictHostKeyChecking=no' --rsync-path='sudo -u root rsync' --out-format='<<CHANGED>>%i %n%L' root@dest:/tmp/file /tmp/file
  msg: |-
    sss_ssh_knownhostsproxy: Could not resolve hostname src
    kex_exchange_identification: Connection closed by remote host
    Connection closed by UNKNOWN port 65535
    rsync: connection unexpectedly closed (0 bytes received so far) [Receiver]
    rsync error: unexplained error (code 255) at io.c(228) [Receiver=3.2.3]
  rc: 255

Possibly related:

• synchronize "use_ssh_args" does not work when delegating #505
• ansible.posix.synchronize #358
• synchronize delegate_to=localhost ignored #395