NYCPHP Meetup

[Rolan Yang]

If you want to do a database backup with no downtime, replicate to a 
second mysql machine. You can stop the slave and perform a dump. Then 
after the dump is complete, it will sync back up upon restart. If you're 
really tight on hardware resources, you might even be able to start a 
second instance of mysql (listening on a different port/socket) and do 
it all on the same machine.

~Rolan

Anthony Wlodarski wrote:
>
> I was confused on the relevance of this topic but since PHP and MySQL 
> go together like PB&J I thought it would be relevant.
>
> It has gotten to the point that the application that I built for 
> candidate tracking is growing astronomically so now I was given the 
> task of backing up our data. So far our Apache/Drupal installation is 
> backed up and SCP’ed to a secure server. My one big problem is backing 
> up our MySQL database. Does the script “mysqlhotcopy” have the same 
> drawback as just copy the files manually (frm, MYD, MYI) in the sense 
> that the server can’t be updating anything. To be honest I can’t 
> guarantee that no one in the office will not be using the system at 
> certain times so it might present a problem. Would it be easier to 
> just to script something that follows this logic:
>
> Pre: rename index.php, copy in temp file with downtime message
>
> 1.) Stop daemon.
>
> 2.) Copy all the table files *.frm, *.MYD, *.MYI files, tar/gzip them
>
> 3.) SCP archive offsite
>
> 4.) Delete temp folder
>
> 5.) Restart daemon.
>
> Post: delete temp file, rename file back to index.php
>
> Is it unrealistic for my office to expect 100% uptime, even at 3:30 am 
> in the morning (those whacky recruiters).
>
> /Anthony Wlodarski/
>
> aw at sap8.com
>
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