bash - 无法通过 ssh 执行 screen : Must be connected to a terminal

Question

我有一组服务器，我想在每台服务器上启动专用的 Python 脚本。 我的计算机名称列表存储在 $COMPUTERS 变量中，为了部署我的脚本，我尝试使用 SSH 连接并启动 screen 实例

for ((i = 0; i < ${#COMPUTERS[@]}; i++)); do
  echo ""
  echo ">> Start simulations on computer ${COMPUTERS[i]}..."
  ssh -o "StrictHostKeyChecking=accept-new" ${COMPUTERS[i]} "
    cd ${WORKING_DIRECTORY}/compressor && git pull;
    screen -S ${SCREEN_NAME} -X quit > /dev/null;
    echo 'Start screen ${SCREEN_NAME} on ${COMPUTERS[i]}';
    screen -dmS ${SCREEN_NAME} ' \
      export LD_LIBRARY_PATH=\"${LD_LIBRARY_PATH}:${WORKING_DIRECTORY}/venv/lib/\" && \
      ${WORKING_DIRECTORY}/venv/bin/python ${WORKING_DIRECTORY}/deployment/simulations/simulate.py ${i} > ~/output_${COMPUTERS[i]}.txt \
    ';
    screen -r;
    "

  echo "Done for ${COMPUTERS[i]}"
done

但是，没有启动 screen 实例，我唯一的消息是:

Start screen sim on pc-elec.priv

Must be connected to a terminal.

Answer 1

您需要强制伪终端。

SSH Man page

-t' Force pseudo-tty allocation. This can be used to execute arbitrary screen-based programs on a remote machine, which can be very useful, e.g. when implementing menu services. Multiple -t options force tty allocation, even if ssh has no local tty.

例如:

ssh -t -o "StrictHostKeyChecking=accept-new" ${COMPUTERS[i]}