我正在尝试重新启动服务器，然后使用以下命令等待：
- name: Restart server shell: reboot - name: Wait for server to restart wait_for: port=22 delay=1 timeout=300
但是我得到这个错误：
TASK: [iptables | Wait for server to restart] ********************************* fatal: [example.com] => failed to transfer file to /root/.ansible/tmp/ansible-tmp-1401138291.69-222045017562709/wait_for: sftp> put /tmp/tmpApPR8k /root/.ansible/tmp/ansible-tmp-1401138291.69-222045017562709/wait_for Connected to example.com. Connection closed
您应该将wait_for任务更改为local_action，然后指定要等待的主机。例如：
- name: Wait for server to restart local_action: module: wait_for host=192.168.50.4 port=22 delay=1 timeout=300
