Hi,
On 08/05/2025 19:14, Vicki Chen wrote:
Hi,
I'm a software developer currently researching how Corosync utilizes the Totem
protocol token. Corosync employs the Totem protocol to monitor the health of
cluster nodes by circulating a token among them. If a node doesn't receive the
token within a specified timeout period (configured in corosync.conf), it's
considered unresponsive. I'm interested in diving deeper into this mechanism.
Is there a specific formula or method used to determine host failure detection
time in Pacemaker? Could you provide details? Thanks!
Are you interested in Pacemaker or Corosync? For Corosync head to
https://github.com/corosync/corosync/wiki/Developers#reference-documentation
specially "Totem: A Reliable Ordered Delivery Protocol for
Interconnected Local-Area Networks (PDF) - Deborah A. Agarwal - 1994".
Todays Corosync differs in many areas, especially using knet instead of
IP multicast, but totem itself is more or less 1:1 implementation of
protocol described in Deborah A. Agarwal thesis.
Regards
Honza
best regards,
Vicki Chen
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