[Starlingx-discuss] how to get rt-kernel support ?

[Rai, Ankush]

Ok got it. Thank you.

Regards,
Ankush

From: Sun, Austin <austin.sun at intel.com>
Sent: Thursday, September 24, 2020 1:06 PM
To: Rai, Ankush <Ankush.Rai at commscope.com>; Penney, Don <Don.Penney at windriver.com>; starlingx-discuss at lists.starlingx.io
Subject: RE: how to get rt-kernel support ?

Hi Ankush: You can check doc [1] , select 'All-in-one (lowlatency) Controller' for lowlatency , this is same all release r3 , r4 changes, if you want to use Simplex or Duplex system . For multi Nodes
External (austin.sun at intel.com<mailto:austin.sun at intel.com>)
Report This Email<https://shared.outlook.inky.com/report?id=Y29tbXNjb3BlL2Fua3VzaC5yYWlAY29tbXNjb3BlLmNvbS85ZDdlMDM5NjNhNDA3MjUwZGEzZWQ3OTEwOWMzZjJlMi8xNjAwOTMyOTM5LjM=#key=c1d14b26cbbc5a12ffd3cd6b1b277e13>  FAQ<https://www.inky.com/banner-faq/>  Protection by INKY<https://www.inky.com>

Hi Ankush:
You can check doc [1] , select 'All-in-one (lowlatency) Controller' for lowlatency , this is same all release r3 , r4 changes, if you want to use Simplex or Duplex system .

For multi Nodes setup , only worker nodes support low-latency.

There is no pre-requirement for a node to be a low-latency node .

I this there is no way to change node to low-latency node after installation except re-install.

[1] https://docs.starlingx.io/deploy_install_guides/r3_release/bare_metal/aio_duplex_install_kubernetes.html<https://secure-web.cisco.com/1P4lnGQbHlM1HIlE29G9CN0yO0If-oZP8LGQLudF6pIycDVerD5Pa5mxdMwrRwnRy7gL2M3W7kta_m3f0Rpf5zJJwvavGxlEmT4ZEwBwrVgSOJF3r-5UptXhTYpIcHZGhs7pTL3l-etbvilDo5rSBtH9XqdsyonBakzpmmy0RlGFiDtvKDIKMTrmIuoLghnZdm9RombUdk1VHek3ME5BRzcxbrkhUCRRtb7SdWGcHX-m-WECqobZdGNapaobEnjFepSoCal4UrMuDh81v8fbJ5Jsept6pZDK_oQ6qxuv7yU7yKGveZcnBHB1A6R98zcGU/https%3A%2F%2Fdocs.starlingx.io%2Fdeploy_install_guides%2Fr3_release%2Fbare_metal%2Faio_duplex_install_kubernetes.html>

Thanks.
BR
Austin Sun.

From: Rai, Ankush <Ankush.Rai at commscope.com<mailto:Ankush.Rai at commscope.com>>
Sent: Thursday, September 24, 2020 11:42 AM
To: Penney, Don <Don.Penney at windriver.com<mailto:Don.Penney at windriver.com>>; starlingx-discuss at lists.starlingx.io<mailto:starlingx-discuss at lists.starlingx.io>
Subject: Re: [Starlingx-discuss] how to get rt-kernel support ?

Thank you for your response to this query. But I am still not clear on this. Are you saying that, the kernel-rt RPM will get installed only for "lowlatency" nodes?
If my understanding is correct then I have few more questions:


  *   How can I set the node as "lowlatency" node? (Is there any documentation reference for this ?)
  *   Can I make the controller node as a low low-latency node or is it possible for only worker nodes ?
  *   What are the pre-requirement for a node to be a low-latency node ?
  *   Post installation, is there a way to make a node as low-latency node ?

I have All-in-one-Duplex mode of deployment, both having "controller" personality  and "controller,worker" as subfunctions.

capabilities          | {u'stor_function': u'monitor', u'Personality': u'Controller-Active'}
capabilities          | {u'stor_function': u'monitor', u'Personality': u'Controller-Standby'}
personality           | controller
subfunctions          | controller,worker

Regards,
Ankush
From: Penney, Don <Don.Penney at windriver.com<mailto:Don.Penney at windriver.com>>
Sent: Thursday, September 24, 2020 12:51 AM
To: Rai, Ankush <Ankush.Rai at commscope.com<mailto:Ankush.Rai at commscope.com>>; starlingx-discuss at lists.starlingx.io<mailto:starlingx-discuss at lists.starlingx.io>
Subject: RE: how to get rt-kernel support ?


The kernel-rt RPM is installed on the "lowlatency" nodes. For AIO, you'd want to install AIO-lowlatency.

From: Rai, Ankush <Ankush.Rai at commscope.com<mailto:Ankush.Rai at commscope.com>>
Sent: Wednesday, September 23, 2020 3:05 PM
To: starlingx-discuss at lists.starlingx.io<mailto:starlingx-discuss at lists.starlingx.io>
Subject: [Starlingx-discuss] how to get rt-kernel support ?

Hi,

I couldn't find the rpm for rt-kernel. Is starlingx comes up with rt-kernel support or it need to be patched ?

Any pointer to get the rt-kernel support ?

software_version       | 20.06
I am using the latest green image: http://mirror.starlingx.cengn.ca/mirror/starlingx/master/centos/latest_green_build/outputs/iso/bootimage.iso<http://secure-web.cisco.com/1XaBjIrnsla4yw1swS70D-c4YZi3Gwk3fVlMFfZ8kh2jZoeRyWzfjNtCFudYq_klY9V9Ich822XL2RhcKfuhEage23YzuYyRTEpvehrwknKUOg5mbD5Ci5S6rRANn9WYVS0S7I0kOJD1ErxSKWnPtDeLaYwfxmosv_umFY7x1CgyjeHfO-ENsQk8bUV-_BYXS6cPUqwoeS3XGYVpYtFugRR12uacP1I3x8eX9b2TfrhKVzL9H01z0Y_2V3WGHIqzJtD_WmfTzssYX1NFL4EP4vXW3o3cZDjXxMkH_HLxFz-JXWauMnPwANk4bpGe92t1q/http%3A%2F%2Fmirror.starlingx.cengn.ca%2Fmirror%2Fstarlingx%2Fmaster%2Fcentos%2Flatest_green_build%2Foutputs%2Fiso%2Fbootimage.iso>
Required rt-kernel patch: kernel-rt-3.10.0-693.2.2.rt56.623.el7.x86_64

Thanks,
Ankush
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.starlingx.io/pipermail/starlingx-discuss/attachments/20200924/9372553f/attachment-0001.html>