Re: [Automysqlbackup-users] Mysqlbackup fails an brings the server down

[Ward L. <wa...@lo...>]

Hello,

Thanks for the reply. I have control over the mysql settings. I'll also take
a look at mysqlhotcopy.


2011/6/2 Wipe_Out <wip...@us...>

> Hi,
>
> It could be an issue with the server running out of memory while dumping
> that large table.. The --opt switch is used which should disable memory
> buffering when its dumping the database but perhaps its something else.. It
> could also be that the table is being locked for a long time which is
> causing a problem for your website..
>
> Are you able to change the MySQL server settings? eg buffers etc..
>
> An alternative would be to not use the script to backup that database and
> instead use the mysqlhotcopy command which may work better for a larger
> database thats always active..
>
>
>
> Does seem strange because
>
> On 2 June 2011 08:44, Ward Loockx <wa...@lo...> wrote:
>
>> Hello,
>>
>> I currently use automysqlbackup to backup 10databases. There is one big
>> database that contains a table with +- 780.000records. When mysqlbackup
>> executes it fails (on that table) and brings my websites down (maybe the
>> load is so high that apache processes can't answer in time). Looks like
>> there are a lot of query's executed at the moment of backup and maybe the
>> query's are locking each other.
>>
>> I also get the following by email:
>>
>> mysqldump: Error 2013: Lost connection to MySQL server during query when
>> dumping table `video` at row: 745740
>>
>> I think this are 2seperate problems:
>>
>>    - Mysql backup script failing
>>    - Website's are down (because the use of too many resources?)
>>
>>
>> Do you guys have any ideas how to fix this? Can you let the script run in
>> low priority mode, so that it doesn't eat the resources and does not lock
>> any tables ?
>>
>> Thanks!
>> Ward
>>
>>
>>
>>
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>
>
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