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Displaying posts with tag: mysql Database (reset)
How to create a rock-solid MySQL database backup & recovery strategy

Have you ever wondered what could happen if your MySQL database goes down?

Although it’s evident such a crash will cause downtime – and surely some business impact in terms of revenue – can you do something to reduce this impact?

The simple answer is “yes” by doing regular backups (of course) but are you 100% sure that your current backup strategy will really come through when an outage occurs? And how much precious time will pass (and how much revenue will be lost) before you get your business back online?

I usually think of backups as the step after HA fails. Let’s say we’re in M<>M replication and something occurs that kills the db but the HA can’t save the day. Let’s pretend that the UPS fails and those servers are completely out. You can’t failover; you have to restore data. Backups are a key piece of “Business Continuity.” Also factor in the frequent need to restore data that’s been …

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What happens when your application cannot open yet another connection to MySQL

Have you ever experienced a situation where one moment you can connect to the MySQL database and the next moment  you cannot, only to be able to connect again a second later? As you may know one cannot open infinite connections with MySQL. There’s a practical limit and more often than not it is imposed by the underlying operating system. If you’re getting:

ERROR 2003 (HY000): Can't connect to MySQL server on '192.168.0.10' (99)

…there’s a good chance you’re hitting such limit. What might be misleading in the information above is whom (which side) is preventing the connection from being established.

Understanding the problem at hand

Whenever a client uses the network to connect to a service running on a given port of a server this connection is established through the creation of a socket:

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Tips on benchmarking Go + MySQL

We just released, as an open source release, our new percona-agent (https://github.com/percona/percona-agent), the agent to work with Percona Cloud Tools. This agent is written in Go.

I will give a webinar titled “Monitoring All MySQL Metrics with Percona Cloud Tools” on June 25 that will cover the new features in percona-agent and Percona Cloud Tools, where I will also explain how it works. You are welcome to register now and join me. …

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Is your backup complete? – backup MySQL users privileges / grants – pt-show-grants

Everybody knows the criticality of backup. You might have had your database dumped, data directory copied, flat files exported and even config and binary log files backed-up. But did you backup your MySQL user privileges? One can easily forget to backup the user privileges but it is much easier to do and you should backup […]

Load columnar text file into MySQL table

Ever come accoss a situation where you have to load a flat text file into MySQL with data provided in single column! Say, your data to be loaded in table looks something like this: Company1 Street Name City, MyState 8582 (999)999-999 another_Company Another Street 2 New City, NWSTATE 8582 (111)111-1111 So how’d you go about […]

Showing entries 1 to 5