Re: sysfs support

 

Hi, 

sysfs is most for code running in kernel space/mode. 

Good things todo is to create a api/library and use that to interact
with your application. 

And let api answer your questions below and also change running
configuration. 

But it's a hard work and take lot of time to implement.... 

2017-03-15 17:07 skrev Jakub Słociński: 

> Hey Quentin,
> thought about that as an easier way to change running configuration and gather status of running instances, like via /tmp/keepalived.(stats|data), but better :)
> 
> first idea to check/change:
> - am I a MASTER for instance X?
> - does my peer is alive?
> - change priority/preemption/other values
> - where was the last transition (how much we're stable)?
> - .. (and other available info)
> 
> Dbus is only a trigger (like signals) that dumps result in a textfile and it's not fast/easy way to interact (file has to be stored which takes a while and we have to process text with more human than machine-readeable format).
> SNMP is an overkill in some cases and may be slow for local management.
> 
> Regards,
> Jakub Słociński
> 
> ________________________________________
> From: Quentin Armitage <[email protected]>
> Sent: Tuesday, March 7, 2017 6:34:31 PM
> To: Jakub Słociński
> Cc: [email protected]
> Subject: Re: [Keepalived-devel] sysfs support
> 
> On Tue, 2017-03-07 at 12:52 +0000, Jakub Słociński wrote:
> 
> Hey,
> do you know if some work was done about sysfs support to be able to interfere with keepalived? Or is there any plan for that?
> 
> Best regards,
> Jakub Słociński
> R&D Network Engineer OVH
> 
> Could you provide some examples of what you would like to be able to achieve. sysfs seems to be a mechanism for communicating between kernel and user space, and since keepalived runs in userspace I'm not sure how sysfs could be used.
> 
> Are you wanting to be able to alter keepalived's settings while it is running? Currently one or two settings can be modified via SNMP, and also via Dbus.
> 
> Quentin Armitage
> 
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-- 

Cheers

/Jan Holmberg
 

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