[CentOS] "yum update": When is new header data downloaded? (Trying to set up custom repository...)

[Toralf Lund]

Benjamin Franz wrote:
> On 07/12/2010 04:58 AM, Toralf Lund wrote:
>   
>> So, it seems like I managed to correctly update the repodata and all,
>> but originally, yum concluded that it didn't need to download a new
>> version, but could use the one cached earlier. instead.
>>
>> Does anyone have any idea why this happened? How exactly does yum decide
>> when to download new headers and when to reuse cached data?
>>    
>>     
>
> You probably want the /etc/yum.conf file. There should be a line in it 
> right now that reads 'metadata_expire=1h'.
>   
Ah. Never noticed this setting before... So only the download time of 
the data matters, and not the server-side update time? It nearly makes 
sense then, although the original install was done more than 1h before 
the update. But maybe the headers were downloaded again after that via 
yum-updatesd or similar?

A delay of 1h from the repository update to the client can upgrade may 
not actually be a problem, as long as we know about it...

Thanks,

- Toralf


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