嗨,我正在创建一个用于监视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
但当我在我的monit中执行启动服务时,状态是"执行失败",我检查了monit的日志文件,上面写着
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的脚本将以sudo/etc/init.d/differ.shstart的身份执行,但ruby仅安装在用户"amer"中。我试过
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>'
请帮我解决这个问题。我有两个ruby版本。
/home/amer/.rvm/rubies/ruby-2.0.0-p247/bin/ruby
/home/amer/.rvm/bin/ruby
您的环境好像不见了。更换
sudo -u amer $EXEC >>init_log/output.log &
带有
su -s /bin/bash - amer -c "$EXEC >> init_log/output.log 2>&1" &
这应该可以正确设置您的shell环境。如果以前运行过sudo .. >> log
,则日志文件可能由root用户所有。改变这一点,否则就会失败。我还添加了将STDERR重定向到STDOUT,因为您可能对错误消息感兴趣。
经过长期的斗争,我找到了这个问题的解决方案。必须做两件事
1) 在脚本中导出您的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) USE 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&
它对我有效。希望它对每个人都有用。
当我想在init:中运行ruby脚本时,我会这样做
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。
我把这个放在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:所有必要的宝石都需要安装在该宝石集中。
做这一切的正确方法是创建一个rvm包装器脚本(参见示例),但我发现我的方法对于没有太多gemset的简单设置更容易。