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Markus Hilger
098d0a66c3
Without pipelining every task copies the module to the node over sftp, then makes it executable, runs it and removes it, each a separate ssh operation. With pipelining the module is fed to the interpreter over the ssh session, so a task takes one operation and nothing is written to the node's temporary directory. Pipelining breaks become through sudo with requiretty, which rarely applies here: plays connect as root and drop become unless become_user is set. Setting ANSIBLE_PIPELINING or ANSIBLE_SSH_PIPELINING still overrides this default.