如何通过sudo运行ruby

时间:2013-07-24 12:36:03

标签: ruby rvm sudo monit init.d

您好我正在创建一个用于监控ruby程序的新init脚本。

NAME=differ
FILE_PATH=/home/amer/Documents/ruby_projects/differ/
PIDFILE=/home/amer/pid/differ.pid
PID=$$
EXEC='/home/amer/.rvm/rubies/ruby-2.0.0-p247/bin/ruby main_scheduler.rb'

do_start(){
    echo "started"
    cd $FILE_PATH
    pwd
    $EXEC  >> init_log/output.log &
    echo $! > $PIDFILE
    echo "---------"
    echo `cat $PIDFILE`
    echo "all are DONE "
}

do_stop(){
    PID=`cat $PIDFILE`
    echo $PID
    if ps -p $PID ; then
        kill -6  $PID
        echo "it is over"
    else
        echo "its not running"
    fi
}

case "$1" in
    start)
    echo $$
        echo -n "Starting script differ "
        do_start
        ;;
    stop)
        echo "stopping ...."
        do_stop
        ;;
    status)
        PID=`cat $PIDFILE`
        echo "STATUS $PID"
        if  ps -p $PID -f; then
            echo running
        else
            echo not running
        fi
        ;;
    restart|reload|condrestart)
        do_stop
        do_start
        ;;
    *)
        echo "Usage: /etc/init.d/blah {start|stop}"
        exit 1
        ;;
esac

exit 0

我的监控过程是

 check process differ with pidfile /home/amer/pid/differ.pid
if changed pid then exec "/etc/init.d/differ start"
 start program = "/etc/init.d/differ start" 
 stop program = "/etc/init.d/differ stop"
 if 5 restarts within 5 cycles then timeout

但是当我在我的monit中执行启动服务时状态为“执行失败”并且我检查了monit的日志文件,它说

       info     : 'differ' start: /bin/bash
       error    : 'differ' failed to start
       error    : 'differ' process is not running

当我分析问题的根源时。原因是monit以root身份运行,执行ruby的脚本将作为 sudo /etc/init.d/differ.sh start 执行,但ruby仅安装在用户'amer'中。我试过了

 sudo -u amer $EXEC >>init_log/output.log &

它将错误显示为

 amer@amer-Inspiron-1525:~$ /home/amer/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in `require': cannot load such file -- bundler/setup (LoadError)
from /home/amer/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in `require'
from main_scheduler.rb:2:in `<main>'

请帮助解决这个问题。我有两个红宝石版本。

     /home/amer/.rvm/rubies/ruby-2.0.0-p247/bin/ruby
     /home/amer/.rvm/bin/ruby

3 个答案:

答案 0 :(得分:2)

看起来你的环境不见了。取代

sudo -u amer $EXEC >>init_log/output.log &

su -s /bin/bash - amer -c "$EXEC >> init_log/output.log 2>&1" &

这应该正确设置您的shell环境。如果之前运行过sudo .. >> log,则日志文件可能由root拥有。改变它或它会失败。我还添加了STDERR到STDOUT的重定向,因为您可能对错误消息感兴趣。

答案 1 :(得分:1)

经过长时间的努力,我找到了解决这个问题的方法。 必须做两件事

1)在脚本中导出PATH,GEM_HOME,GEM_PATH

export PATH="/home/amer/.rvm/gems/ruby-2.0.0-p247@rails329/bin:/home/amer/.rvm/gems/ruby-2.0.0-p247@global/bin:/home/amer/.rvm/rubies/ruby-2.0.0-p247/bin:/home/amer/.rvm/bin:/usr/lib/lightdm/lightdm:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games"   
export GEM_HOME=/home/amer/.rvm/gems/ruby-2.0.0-p247@rails329
export GEM_PATH=/home/amer/.rvm/gems/ruby-2.0.0-p247@rails329:/home/amer/.rvm/gems/ruby-2.0.0-p247@global

2)使用rvmsudo bundle exec ruby​​“filename”(使用完整路径)

 rvmsudo -u amer  /home/amer/.rvm/gems/ruby-2.0.0-p247@rails329/bin/bundle exec  /home/amer/.rvm/rubies/ruby-2.0.0-p247/bin/ruby main_scheduler.rb&
它对我有用。希望它适合每个人。

答案 2 :(得分:0)

以下是我想在init中运行ruby脚本时的操作:

我切换到超级用户并安装rvm。这不会导致单用户安装出现问题。

我把它放在init脚本中:

/usr/local/rvm/bin/rvm-shell 'yourgemset' -c 'ruby pathtoyourscript/yourscript.rb'

示例:

/usr/local/rvm/bin/rvm-shell 'jruby-1.7.4' -c 'ruby /home/someone/service.rb'

提示:需要在该gemset中安装所有必需的gem。

执行所有这些操作的正确方法是创建一个rvm包装器脚本(see example),但我发现我的方法更容易进行简单的设置,其中没有很多gemset。