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September 18, 2011 04:05 am
Original Link: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/9shqwZZ2ypM/Making-Facebook-Self-Healing
Making Facebook Self Healing
New submitter djeps writes "I used to achieve some degree of automated problem resolution with Nagios Event Handler scripts and RabbitMQ, but Facebook has done it on a far larger scale than my old days of sysadmin. Quoting: 'When your infrastructure is the size of Facebook's, there are always broken servers and pieces of software that have gone down or are generally misbehaving. In most cases, our systems are engineered such that these issues cause little or no impact to people using the site. But sometimes small outages can become bigger outages, causing errors or poor performance on the site. If a piece of broken software or hardware does impact the site, then it's important that we fix it or replace it as quickly as possible. ... We had to find an automated way to handle these sorts of issues so that the human engineers could focus on solving and preventing the larger, more complex outages. So, I started writing scripts when I had time to automate the fixes for various types of broken servers and pieces of software.'" 
Read more of this story at Slashdot.
Original Link: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/9shqwZZ2ypM/Making-Facebook-Self-Healing
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