Hi,
We changed totem.token from 3s to 60s. Then something strange were observed, 
such as unexpected node offline.
I read corosync.conf manpage, but still don't understand the reason.
Can anyone explain this? or maybe our conf is broken?

What corosync version are you using? Your config file is not exactly "broken", but I'm not sure how exactly all the settings play together, so maybe minimize it. Setting high token timeout shouldn't cause problems, only failure detection takes long time.



Our corosync.conf:

compatibility: whitetank
quorum {
         provider: corosync_votequorum
         two_node: 0
}
totem {
         version: 2
         token: 60000
         token_retransmits_before_loss_const: 10
         join: 60
         consensus: 3600
         vsftype: none
         max_messages: 20
         clear_node_high_bit: yes
         rrp_mode: none
         secauth: off
         threads: 2
         transport: udpu
         interface {
                 ringnumber: 0
                 bindnetaddr: 39.39.0.5
                 mcastport: 5405
        }
}
amf {
         mode: disabled
}
aisexec {
         user: root
         group: root
}
nodelist {
         node {
                 ring0_addr: 39.39.0.4
                 nodeid: 1
         }
         node {
                 ring0_addr: 39.39.0.5
                 nodeid: 2
         }
         node {
                 ring0_addr: 39.39.0.6
                 nodeid: 3
         }
}
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