约定项目目录/home/service/ 启动入口文件app.py

启动-start_service.sh

#!/bin/sh

cd /home/
nohup python service/app.py > /dev/null 2>&1 &

停止-stop_service.sh

#!/bin/sh

ps -ef | grep "service/app.py" |grep -v grep | awk '{print $2}' | xargs kill -9

保活-monitor_service.sh

#!/bin/sh

current_dir=$(dirname $0)

is_live=$(ps -ef | grep "service/app.py" | grep -v grep | awk '{print $2}')
if [ -z "$is_live" ]; then
  echo "start  ..."
  $current_dir/start_service.sh &
else
  echo "is running ..."
fi

保活脚本使用crontab每分钟执行一次，如果觉得最长一分钟宕机的时间还是无法接受，可以考虑下文长驻保活脚本

#!/bin/sh

current_dir=$(dirname $0)

while true; do
  is_live=$(ps -ef | grep "service/app.py" | grep -v grep | awk '{print $2}')
  if [ -z "$is_live" ]; then
    echo "start  ..."
    $current_dir/start_service.sh &
    sleep 1
  else
    echo "is running ..."
    sleep 10
  fi

done