ruby - whenever+crontab 提示 not found gem ,check GEM_PATH问题

Question

1.我使用whenever gem 来定时启动 rails runner 任务；可是定时任务的log显示： {代码...} 我也gem install railties了，可是还是这样，我的ruby version：2.3.0，rails version：4.1.0;本人ruby 小白，求帮助

阿神 · Answer

自问自答来更新答案,原来是“whenever +cron”的坑，原因是cron中没有加入关于 GEM_PATH的参数，

1.crontab -l
[root@meituanQaServer1 qa_assist]# crontab -l
# Begin Whenever generated tasks for: /root/guoshun/qa_assist/config/schedule.rb
PATH=/usr/local/rvm/gems/ruby-2.3.0/bin:/usr/local/rvm/gems/ruby-2.3.0@global/bin:/usr/local/rvm/rubies/ruby-2.3.0/bin:/usr/lib64/qt-3.3/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/rvm/bin:/usr/local/apache-maven/bin:/usr/local/python27/bin/:/root/bin:/usr/local/python27/bin

GEM_PATH=/usr/local/rvm/gems/ruby-2.3.0:/usr/local/rvm/gems/ruby-2.3.0@global

0 16 27 * * /bin/bash -l -c 'cd /root/guoshun/qa_assist && rails runner -e production Device.send_device_message >> elephant.log 2>&1'

0 0,3,6,9,12,15,18,21 * * * /bin/bash -l -c 'cd /root/guoshun/qa_assist && rails runner -e production JiraData.get_jira_data_status >> workflow.log 2>&1'

30 22 * * * /bin/bash -l -c 'cd /root/guoshun/qa_assist && python hiveDaily/runner.py >> cron.log 2>&1'

* 20 * * * /bin/bash -l -c 'cd /root/guoshun/ht_plat/ && python deviceAnalysis/runner.py >> device.log'

# End Whenever generated tasks for: /root/guoshun/qa_assist/config/schedule.rb

中看看有没有加入GEM_PATH参数，如果没有

[root@meituanQaServer1 qa_assist]# echo $GEM_PATH
/usr/local/rvm/gems/ruby-2.3.0:/usr/local/rvm/gems/ruby-2.3.0@global

3.crontab -e 编辑 cron表，添加：

GEM_PATH=/usr/local/rvm/gems/ruby-2.3.0:/usr/local/rvm/gems/ruby-2.3.0@global//上面输出的路径

大功告成了。