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mirror of https://github.com/xcat2/xcat-core.git synced 2026-09-05 04:27:55 +00:00
Daniel Hilst 715fbed7a8 fix(xcat-core): respawn the xcatd install monitor when it dies
Re-fork the install monitor from the main service loop when $pid_MON has been cleared
and xcatiport is still configured, so a single death of that child no longer leaves
the port dead until the whole daemon is restarted. The forked child closes the SSL
listener and the UDP control socket before re-entering do_installm_service, so it
serves only the install monitor.

Rate limit the respawn. do_installm_service dies when it cannot bind the port after
its own retries, which is exactly the case where an unguarded re-fork would spin as
fast as fork allows and keep re-entering that function's USR2 socket-takeover
handshake against whatever still holds the socket. Consecutive attempts are separated
by XCATD_MON_RESPAWN_INTERVAL seconds (default 5) and capped at XCATD_MON_RESPAWN_MAX
(default 10), after which xcatd logs that it is giving up on the port rather than
retrying forever. A monitor that stayed up long enough to outlast the whole retry
budget resets the counter, so an unrelated death much later gets a full budget again.

Signed-off-by: Daniel Hilst <392820+dhilst@users.noreply.github.com>
2026-09-01 20:02:17 -03:00
2024-05-07 16:43:07 +02:00
2018-11-28 10:28:17 +08:00
2017-03-14 11:27:56 -04:00
2021-04-05 09:34:37 -04:00
2018-02-09 01:03:46 -05:00
2024-04-20 02:18:05 +02:00
2026-04-17 03:14:04 -03:00
2021-04-05 09:34:37 -04:00

xCAT

xCAT is a toolkit for deployment and administration of clusters of all sizes.

The xCAT sunset was only a quick eclipse

Dear xCAT Community,

The xCAT sunset has changed course. VersatusHPC has been invited to join the xCAT Consortium, and future development will move toward direct upstream contributions coordinated with the Consortium and its existing member companies.

That matters most for Enterprise Linux 10 (EL10). EL10 support is coming to xCAT, restoring a future operating-system path for sites that still rely on xCAT. This is an important change from the previous sunset guidance, where the lack of an EL10 path was one of the strongest reasons to move away from xCAT.

The xCAT Consortium continues to recommend Confluent as the long-term successor to xCAT, and that remains the Consortium position. Users planning new cluster-management deployments should evaluate Confluent and its xCAT comparison documentation.

At the same time, xCAT is no longer sunsetted. The Consortium and participating companies will continue updating xCAT while there is community and user demand for it.

In summary:

  • xCAT development is continuing upstream through the Consortium and participating companies.
  • Enterprise Linux 10 support is coming.
  • Confluent remains the Consortium-recommended successor and migration path.
  • xCAT updates will continue while there is community and user demand.

We want to thank the xCAT Consortium and community for keeping this project moving. The sun went behind the moon for a moment, but xCAT is still here.

For more information on Confluent and how to get started, please visit the Confluent: Project Page, Documentation or Confluent vs xCAT comparison.

With thanks,

The xCAT Consortium

Documentation

xCAT Documentation is hosted on Read The Docs: https://xcat-docs.readthedocs.io

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xCAT is made available under the EPL license: https://opensource.org/licenses/eclipse-1.0.php

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