This mistake came at the expense of one of my old co-workers, who decided to share this with me over Instant Messenger. I got a good laugh at his misfortune. He wanted to set up a cron job that would restart a poorly performing service every 6 hours. This is the cron entry he added.
* */6 * * * service_restart.sh
The lead developer, whose app depends on that service, came up to him wondering why his app was having outages. What my colleague should have configured was
0 */6 * * * service_restart.sh
His cron entry was restarting the service every 6 hours, and then restarting it every minute for an hour during that sixth hour. Brilliant! Although I guess I shouldn't throw stones in glass houses.
Thursday, August 21, 2008
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1 comment:
Been there, done that.
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