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kronosnet v1.x series and future support / development
by Fabio M. Di Nitto 17 Aug '20

17 Aug '20

All, 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. After several weeks / months without any major bug reported, starting with v1.19 release, we are going to lock down the 1.x series to only 2 kind of changes: * Bug fixes * Onwire compatibility changes to allow rolling upgrades with the v2.x series (if necessary at all) Upstream will continue to support v1.x for at least 12 months after v2.x will be released (date unknown, no really, we didn't even start the development). If you have any amazing ideas on what v2.x should include, please file issues here: https://github.com/kronosnet/kronosnet/issues Or check the current TODO list here: https://trello.com/kronosnet Cheers, The knet developer team

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kronosnet v1.19 released
by Fabio M. Di Nitto 17 Aug '20

17 Aug '20

All, We are pleased to announce the general availability of kronosnet v1.19 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: * Add native support for openssl 3.0 (drop API COMPAT macros). * Code cleanup of public APIs. Lots of lines of code moved around, no functional changes. * Removed kronosnetd unsupported code completely * Removed unused poc-code from the source tree * Make sure to initialize epoll events structures 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://trello.com/kronosnet (TODO list and activities tracking) https://goo.gl/9ZvkLS (google shared drive with presentations and diagrams) IRC: #kronosnet on Freenode https://lists.kronosnet.org/mailman/listinfo/users https://lists.kronosnet.org/mailman/listinfo/devel https://lists.kronosnet.org/mailman/listinfo/commits Cheers, The knet developer team

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kronosnet v1.18 released
by Fabio M. Di Nitto 14 Jul '20

14 Jul '20

All, We are pleased to announce the general availability of kronosnet v1.18 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 libknet soname * Fix doxyxml build 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://trello.com/kronosnet (TODO list and activities tracking) https://goo.gl/9ZvkLS (google shared drive with presentations and diagrams) IRC: #kronosnet on Freenode https://lists.kronosnet.org/mailman/listinfo/users https://lists.kronosnet.org/mailman/listinfo/devel https://lists.kronosnet.org/mailman/listinfo/commits Cheers, The knet developer team

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kronosnet v1.17 released
by Fabio M. Di Nitto 14 Jul '20

14 Jul '20

All, We are pleased to announce the general availability of kronosnet v1.17 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: * Add ability to change crypto configuration at runtime without restarting knet and without packet drop * Add compatibility support for openssl 3.0 * Add functional testing framework and new test cases * Minor build fixes NOTE TO PACKAGERS: please be aware that the functional test suite adds a considerable amount of time to run via make check or make check-memcheck. This is expected, and it will increase further more as more tests will be added. 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://trello.com/kronosnet (TODO list and activities tracking) https://goo.gl/9ZvkLS (google shared drive with presentations and diagrams) IRC: #kronosnet on Freenode https://lists.kronosnet.org/mailman/listinfo/users https://lists.kronosnet.org/mailman/listinfo/devel https://lists.kronosnet.org/mailman/listinfo/commits Cheers, The knet developer team

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kronosnet v1.16 released
by Fabio M. Di Nitto 23 Apr '20

23 Apr '20

All, We are pleased to announce the general availability of kronosnet v1.16 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 major issue with SCTP when nodes have duplicated IP addresses, for example virtual interfaces to connect to docker or libvirt * Fix build with newest gcc * Minor bug 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://trello.com/kronosnet (TODO list and activities tracking) https://goo.gl/9ZvkLS (google shared drive with presentations and diagrams) IRC: #kronosnet on Freenode https://lists.kronosnet.org/mailman/listinfo/users https://lists.kronosnet.org/mailman/listinfo/devel https://lists.kronosnet.org/mailman/listinfo/commits Cheers, The knet developer team

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kronosnet v1.15 released
by Fabio M. Di Nitto 04 Mar '20

04 Mar '20

All, We are pleased to announce the general availability of kronosnet v1.15 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 major interaction issues between applications gathering statistics and PMTUd. * Fix UDP socket options that could lead to knet not being properly functional * Man pages updates * Minor bug 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://trello.com/kronosnet (TODO list and activities tracking) https://goo.gl/9ZvkLS (google shared drive with presentations and diagrams) IRC: #kronosnet on Freenode https://lists.kronosnet.org/mailman/listinfo/users https://lists.kronosnet.org/mailman/listinfo/devel https://lists.kronosnet.org/mailman/listinfo/commits Cheers, The knet developer team

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kronosnet v1.14 released
by Fabio M. Di Nitto 31 Jan '20

31 Jan '20

All, We are pleased to announce the general availability of kronosnet v1.14 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: * [MAJOR] different fixes in managing UDP sockets due to recent kernel changes. * [MAJOR] SCTP partial rewrite to make it work with newer kernels and FreeBSD. FreeBSD users please read the updated README for new sysctl. The development team will be working to evaluate if it's possible to avoid this new sysctl. * Fix internal and external latency calculator to avoid underflows, incorrect values and be consistent. * Fix code to deal with mixed (UDP and SCTP) environments. * Fix common transport code to avoid spinning on EOF messages. * Minor build fixes (support gcc10, openssl, etc). Known issues in this release: * FreeBSD users with SCTP configured should add a new sysctl (see README) 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://trello.com/kronosnet (TODO list and activities tracking) https://goo.gl/9ZvkLS (google shared drive with presentations and diagrams) IRC: #kronosnet on Freenode https://lists.kronosnet.org/mailman/listinfo/users https://lists.kronosnet.org/mailman/listinfo/devel https://lists.kronosnet.org/mailman/listinfo/commits Cheers, The knet developer team

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kronosnet v1.13 released
by Fabio M. Di Nitto 16 Oct '19

16 Oct '19

All, We are pleased to announce the general availability of kronosnet v1.13 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 performances compared to the old network protocol. Highlights in this release: * IMPORTANT/URGENT: fix defrag buffer reclaim logic that could lead knet to deliver corrupted data to the application (corosync or alike). * IMPORTANT/URGENT: fix MTU boundary check on links with very high packet loss and avoid delivering corrupted (short) data to the application. * Optimize reassembly of defrag packets by avoid unnecessary memmoves. * Improvements to the test suite to deal with the above bugs and potentially reduce regressions in future. * Minor stability fixes to 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://trello.com/kronosnet (TODO list and activities tracking) https://goo.gl/9ZvkLS (google shared drive with presentations and diagrams) IRC: #kronosnet on Freenode https://lists.kronosnet.org/mailman/listinfo/users https://lists.kronosnet.org/mailman/listinfo/devel https://lists.kronosnet.org/mailman/listinfo/commits Cheers, The knet developer team

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kronosnet v1.12 released
by Fabio M. Di Nitto 20 Sep '19

20 Sep '19

All, We are pleased to announce the general availability of kronosnet v1.12 (bug fix release) 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 performances compared to the old network protocol. Highlights in this release: * IMPORTANT: any version prior to 1.12 has a memory corruption bug that could cause knet to crash or hung when the network is not stable for a long period of time. Please see https://github.com/kronosnet/kronosnet/issues/255 for details. If you are unable to upgrade to 1.12, please make sure to cherry pick https://github.com/kronosnet/kronosnet/commit/6a92361c7554c2aa7222d6f868e43… (stable branch) into your distribution as soon as possible. * Fixed all coverity scan errors for runtime code. * Fixed latency calculation in some corner cases that could cause internal latency values to spike too high with incorrect values. * Fixed some documentation. * Add support for musl libc 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://trello.com/kronosnet (TODO list and activities tracking) https://goo.gl/9ZvkLS (google shared drive with presentations and diagrams) IRC: #kronosnet on Freenode https://lists.kronosnet.org/mailman/listinfo/users https://lists.kronosnet.org/mailman/listinfo/devel https://lists.kronosnet.org/mailman/listinfo/commits Cheers, The knet developer team

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kronosnet v1.11 released
by Fabio M. Di Nitto 21 Aug '19

21 Aug '19

All, We are pleased to announce the general availability of kronosnet v1.11 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 performances compared to the old network protocol. Highlights in this release: * Major bug fixes in the PMTUd code. MTU was not calculated correctly when using crypto and PMTUd would fail due to timeouts when using crypto and systems are overloaded. Thanks to the proxmox community for reporting the issues and testing pre-fixes. * Allow TX and RX threads to flush queues during shutdown to avoid dropping outgoing packets. * Add a new API to allow manual override of PMTUd/MTU. Please use with caution. (NOTE to package maintainers, this also includes a minor soname bump) * Minor internal improvements and bug 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://trello.com/kronosnet (TODO list and activities tracking) https://goo.gl/9ZvkLS (google shared drive with presentations and diagrams) IRC: #kronosnet on Freenode https://lists.kronosnet.org/mailman/listinfo/users https://lists.kronosnet.org/mailman/listinfo/devel https://lists.kronosnet.org/mailman/listinfo/commits Cheers, The knet developer team

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