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Data loss after MySQL restart

Not so long ago I had a customer who experienced data loss after MySQL restart. It was really puzzling. MySQL was up & running for many months, but after the customer restarted MySQL server all tables have gone. The tables were still visible in SHOW TABLES output, but they were not readable:

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About Nagios monitoring in real example

Now it’s time to setup proper monitoring to avoid unpleasant surprises in future. There are two major problems the monitoring solves: alerting and trending. Alerting is to notify a responsible person about some major event like service stopped working. Trending is to track the change of something over time – disk or memory usage over […]

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