Question

我有一个需要在Ubuntu 14.04上作为服务运行的python应用程序。此应用程序需要具备以下功能：

当服务启动时，会在crontab中创建一个cron条目，该条目将定期运行该应用程序。
当服务停止时，crontab条目将被删除。
重启系统/服务器时，需要启动该服务。

我有以下的upstart脚本来运行我的服务：

start on [2345]
stop on [!2345]

script
    LOGDIR=/usr/local/etc/myservice/logs/
    CFGFILE=/usr/local/etc/myservice/myservice.conf

    echo $$ > /var/run/myservice.pid
    # If there is no cronjob by the name myservice, then add a cronjob to the crontab
    set -x
    exec bash -c '
    if (( $(crontab -l | grep -c myservice) == 0 )); then
       (crontab -l ; echo "1 * * * * myservice) | crontab -
    fi'
end script

pre-start script
    set -x
    echo "[`date`] Starting myservice Service" >> /var/log/myservice.log

    # Testing to see if myservice has been installed, else exit
    [ -x /usr/local/bin/myservice ] || exit 0
    mkdir -p /usr/local/etc/myservice/logs/
end script

pre-stop script
    set -x
    echo "[`date`] Stopping myservice Service" >> /var/log/myservice.log
end script

post-stop script
    set -x
    rm /var/run/myservice.pid
    # If there is at least 1 cronjob by the name myservice, remove all such entries from crontab
    exec bash -c '
    if (( $(crontab -l | grep -c myservice) >= 0 )); then
       (crontab -l | grep -v myservice) | crontab -
    fi'
    pkill -f myservice
end script

但是，当我尝试运行该服务时，它会挂起，我必须按ctrl + c才能返回命令行。与停止服务类似。我在这里错过了什么吗？任何帮助将不胜感激！

启动/杀死状态的Upstart服务

0 个答案: