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Re: [ClusterLabs Developers] kronosnet v1.32 released
by Fabio M. Di Nitto 03 Oct '25

03 Oct '25

Hi, we discussed it between team members on IRC. The implementation in knet has some bugs that noone had the time to address and we have been hitting a lot of instabilities while running CI tests across different distros/kernel combinations, due to different implementations of SCTP at kernel level itself, that makes it rather challenging to have a functional userland. Based on the bugs reports that we receive, noone is using SCTP for what we know (I think one was reported over the last 4 or 5 years? and I know the code has bugs...) 1.x will continue to ship the code, it´s one --enable-* away. Since knet allows runtime reconfiguration of links, switching to UDP will be a 0 downtime change. Cheers Fabio On 03/10/2025 10.19, Jehan-Guillaume de Rorthais wrote: > Hi there, > > On Thu, 25 Sep 2025 04:26:55 +0200 > "Fabio M. Di Nitto" <fabbione(a)fabbione.net> wrote: > >> […] >> >> * IMPORTANT: sctp support is now officially deprecated. It is disabled >> by default and it will be removed in knet 2.x. > > I'm being curious, but I failed to found some changelog or discussion about knet > development, history and such decision. Any pointers? > > Thanks!

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kronosnet v1.32 released
by Fabio M. Di Nitto 25 Sep '25

25 Sep '25

All, We are pleased to announce the general availability of kronosnet v1.32 kronosnet (or knet for short) is the new underlying network protocol for Linux HA components (corosync), that features the ability to use multiple links between nodes, active/active and active/passive link failover policies, automatic link recovery, FIPS compliant encryption (nss and/or openssl), automatic PMTUd and in general better performance compared to the old network protocol. Highlights in this release: * IMPORTANT: sctp support is now officially deprecated. It is disabled by default and it will be removed in knet 2.x. * Fix potential thread race condition in libnozzle close. * Fix wrong pointer in libknet RX thread, only triggered by old gcc (< 11). * Libnozzle: different fixes for BSD to deal with new tap driver changes and don´t leak interfaces. * New API call in libknet to allow configuring a dscp value for KNET_LINK_FLAG_TRAFFICHIPRIO. * Bump soname to reflect new API call. * Add support for OpenIndiana. * Documentation updates. * Fix several tests to better deal with execution timing. * Handle some new coverity errors. * Create and refine STYLE_GUIDE.md for project contributions. Known issues in this release: * None The source tarballs can be downloaded here: https://www.kronosnet.org/releases/ Upstream resources and contacts: https://kronosnet.org/ https://github.com/kronosnet/kronosnet/ https://ci.kronosnet.org/ https://projects.clusterlabs.org/project/board/86/ (TODO list and activities tracking) https://goo.gl/9ZvkLS (google shared drive with presentations and diagrams) IRC: #kronosnet on Libera https://lists.kronosnet.org/mailman3/postorius/lists/users.lists.kronosnet.… https://lists.kronosnet.org/mailman3/postorius/lists/devel.lists.kronosnet.… https://lists.kronosnet.org/mailman3/postorius/lists/commits.lists.kronosne… Cheers, The knet developer team

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kronosnet v1.31 released
by Fabio M. Di Nitto 24 Apr '25

24 Apr '25

All, We are pleased to announce the general availability of kronosnet v1.31 kronosnet (or knet for short) is the new underlying network protocol for Linux HA components (corosync), that features the ability to use multiple links between nodes, active/active and active/passive link failover policies, automatic link recovery, FIPS compliant encryption (nss and/or openssl), automatic PMTUd and in general better performance compared to the old network protocol. Highlights in this release: * Fixed incorrect lzo1x_decompress call to use the safe version * Udp: lower log levels for messages triggered by every single packets to trace level. Known issues in this release: * None The source tarballs can be downloaded here: https://www.kronosnet.org/releases/ Upstream resources and contacts: https://kronosnet.org/ https://github.com/kronosnet/kronosnet/ https://ci.kronosnet.org/ https://projects.clusterlabs.org/project/board/86/ (TODO list and activities tracking) https://goo.gl/9ZvkLS (google shared drive with presentations and diagrams) IRC: #kronosnet on Libera https://lists.kronosnet.org/mailman3/postorius/lists/users.lists.kronosnet.… https://lists.kronosnet.org/mailman3/postorius/lists/devel.lists.kronosnet.… https://lists.kronosnet.org/mailman3/postorius/lists/commits.lists.kronosne… Cheers, The knet developer team

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kronosnet v1.30 released
by Fabio M. Di Nitto 02 Dec '24

02 Dec '24

All, We are pleased to announce the general availability of kronosnet v1.30 kronosnet (or knet for short) is the new underlying network protocol for Linux HA components (corosync), that features the ability to use multiple links between nodes, active/active and active/passive link failover policies, automatic link recovery, FIPS compliant encryption (nss and/or openssl), automatic PMTUd and in general better performance compared to the old network protocol. Highlights in this release: * Convert time_t to unsigned long long before formatting * Add warning when packets are being received from the wrong interface Known issues in this release: * None The source tarballs can be downloaded here: https://www.kronosnet.org/releases/ Upstream resources and contacts: https://kronosnet.org/ https://github.com/kronosnet/kronosnet/ https://ci.kronosnet.org/ https://projects.clusterlabs.org/project/board/86/ (TODO list and activities tracking) https://goo.gl/9ZvkLS (google shared drive with presentations and diagrams) IRC: #kronosnet on Libera https://lists.kronosnet.org/mailman3/postorius/lists/users.lists.kronosnet.… https://lists.kronosnet.org/mailman3/postorius/lists/devel.lists.kronosnet.… https://lists.kronosnet.org/mailman3/postorius/lists/commits.lists.kronosne… Cheers, The knet developer team

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kronosnet v1.29 released
by Fabio M. Di Nitto 06 Jun '24

06 Jun '24

All, We are pleased to announce the general availability of kronosnet v1.29 kronosnet (or knet for short) is the new underlying network protocol for Linux HA components (corosync), that features the ability to use multiple links between nodes, active/active and active/passive link failover policies, automatic link recovery, FIPS compliant encryption (nss and/or openssl), automatic PMTUd and in general better performance compared to the old network protocol. Highlights in this release: * Fix build on armhf * update to latest doxyxml from libqb * Fix FORTIFY source detection * Fix potential overflow in the test suite Known issues in this release: * None The source tarballs can be downloaded here: https://www.kronosnet.org/releases/ Upstream resources and contacts: https://kronosnet.org/ https://github.com/kronosnet/kronosnet/ https://ci.kronosnet.org/ https://projects.clusterlabs.org/project/board/86/ (TODO list and activities tracking) https://goo.gl/9ZvkLS (google shared drive with presentations and diagrams) IRC: #kronosnet on Libera https://lists.kronosnet.org/mailman3/postorius/lists/users.lists.kronosnet.… https://lists.kronosnet.org/mailman3/postorius/lists/devel.lists.kronosnet.… https://lists.kronosnet.org/mailman3/postorius/lists/commits.lists.kronosne… Cheers, The knet developer team

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kronosnet v1.28 released
by Fabio M. Di Nitto 27 Sep '23

27 Sep '23

All, We are pleased to announce the general availability of kronosnet v1.28 kronosnet (or knet for short) is the new underlying network protocol for Linux HA components (corosync), that features the ability to use multiple links between nodes, active/active and active/passive link failover policies, automatic link recovery, FIPS compliant encryption (nss and/or openssl), automatic PMTUd and in general better performance compared to the old network protocol. Highlights in this release: * Fix build on i686 Known issues in this release: * none The source tarballs can be downloaded here: https://www.kronosnet.org/releases/ Upstream resources and contacts: https://kronosnet.org/ https://github.com/kronosnet/kronosnet/ https://ci.kronosnet.org/ https://projects.clusterlabs.org/project/board/86/ (TODO list and activities tracking) https://goo.gl/9ZvkLS (google shared drive with presentations and diagrams) IRC: #kronosnet on Libera https://lists.kronosnet.org/mailman3/postorius/lists/users.lists.kronosnet.… https://lists.kronosnet.org/mailman3/postorius/lists/devel.lists.kronosnet.… https://lists.kronosnet.org/mailman3/postorius/lists/commits.lists.kronosne… Cheers, The knet developer team

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kronosnet v1.27 released
by Fabio M. Di Nitto 26 Sep '23

26 Sep '23

All, We are pleased to announce the general availability of kronosnet v1.27 kronosnet (or knet for short) is the new underlying network protocol for Linux HA components (corosync), that features the ability to use multiple links between nodes, active/active and active/passive link failover policies, automatic link recovery, FIPS compliant encryption (nss and/or openssl), automatic PMTUd and in general better performance compared to the old network protocol. Highlights in this release: * Fix potential startup race condition (corosync use case) * Fix crypto config check * Minor API cleanup * Test suite fixes Known issues in this release: * none The source tarballs can be downloaded here: https://www.kronosnet.org/releases/ Upstream resources and contacts: https://kronosnet.org/ https://github.com/kronosnet/kronosnet/ https://ci.kronosnet.org/ https://projects.clusterlabs.org/project/board/86/ (TODO list and activities tracking) https://goo.gl/9ZvkLS (google shared drive with presentations and diagrams) IRC: #kronosnet on Libera https://lists.kronosnet.org/mailman3/postorius/lists/users.lists.kronosnet.… https://lists.kronosnet.org/mailman3/postorius/lists/devel.lists.kronosnet.… https://lists.kronosnet.org/mailman3/postorius/lists/commits.lists.kronosne… Cheers, The knet developer team

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kronosnet v1.26 released
by Fabio M. Di Nitto 10 Jul '23

10 Jul '23

All, We are pleased to announce the general availability of kronosnet v1.26 kronosnet (or knet for short) is the new underlying network protocol for Linux HA components (corosync), that features the ability to use multiple links between nodes, active/active and active/passive link failover policies, automatic link recovery, FIPS compliant encryption (nss and/or openssl), automatic PMTUd and in general better performance compared to the old network protocol. Highlights in this release: * Tx performance improvements by removing unnecessary and expensive memsets * Add log TRACE facility and drop build time logging configuration * Specfile: migrate to SPDX licence format * Fix few minor build issues with the test suite Known issues in this release: * None The source tarballs can be downloaded here: https://www.kronosnet.org/releases/ Upstream resources and contacts: https://kronosnet.org/ https://github.com/kronosnet/kronosnet/ https://ci.kronosnet.org/ https://projects.clusterlabs.org/project/board/86/ (TODO list and activities tracking) https://goo.gl/9ZvkLS (google shared drive with presentations and diagrams) IRC: #kronosnet on Libera https://lists.kronosnet.org/mailman3/postorius/lists/users.lists.kronosnet.… https://lists.kronosnet.org/mailman3/postorius/lists/devel.lists.kronosnet.… https://lists.kronosnet.org/mailman3/postorius/lists/commits.lists.kronosne… Cheers, The knet developer team

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test
by Fabio M. Di Nitto 18 Apr '23

18 Apr '23

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Re: Migrated to corosync 3.x knet become default protocol
by Fabio M. Di Nitto 28 Mar '23

28 Mar '23

Hi Sathish, apology for the super late reply. I have been on sick leave for a long time. comments inline On 30/01/2023 08.38, S Sathish S wrote: > Hi Team, > > In our application we are currently using UDPU as transport protocol > with single ring, while migrated to corosync 3.x knet become default > protocol. > > We need to understand any maintenance overhead that any required > certificate/key management would bring in for knet transport protocol > (or) it > > will use existing authorization key /etc/corosync/authkey file for > secure communication between nodes using knet transport protocol. there is no extra maintenance. In fact, knet should make it easier. corosync will continue to use the same authkey and load it into knet. knet and corosync, in recent versions also allow runtime change of the authkey without shutting down the cluster and restart. It should be possible to update authkey and issue a config reload for corosync. This feature requires all nodes of the cluster to be online. > > https://access.redhat.com/solutions/5963941 > <https://access.redhat.com/solutions/5963941> > > https://access.redhat.com/solutions/1182463 > <https://access.redhat.com/solutions/1182463> > > We shouldn't end up in a case where Pacemaker stops working due to some > certificate/key expiry? No, that won´t be the case as knet and corosync use a different encryption method than pacemaker. Cheers Fabio > > Thanks and Regards, > > S Sathish S > > > _______________________________________________ > Users mailing list -- users(a)lists.kronosnet.org > To unsubscribe send an email to users-leave(a)lists.kronosnet.org

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