I'm a Labs user and I can't use crontab now. When I use "crontab -e", nano opens, I made changes, save it, but when I exit from nano, command prompt doesn't appear; if I use Ctrl-C, prompt appears, but my changes are not deployed into crontab file. When I use "crontab crontab.txt", command prompt doesn't appear too and so on. See http://i.imgur.com/S4a3ruM.png. I have successfully used crontab previously.
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Just so I'm clear -- the problem is with editing cron, not with the crons themselves firing, correct?
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SuggestBot's cron jobs for editing https://en.wikipedia.org/wiki/Wikipedia:Community_portal/Opentask appear to be executing just fine. I also noticed that changing crontab worked on tools-bastion-02 for the tools.suggestbot account.
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I restarted tools-cron-01 and that seems to have resolved the problem for the moment. /Probably/ there's an underlying cause, though (specifically, a broken cron job that does a lot of CPU-intensive work locally on the host rather than submitting to the grid.)
Keeping this open so we can see if the problem recurs.
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As @Andrew wrote this is being kept open for a while because we should check on it again later, it may re-occur