cluster issue

[q16marvin]

hi,

my cluster is sometimes not synced, syslog tells that:

Jun 15 11:37:50 proxmox1 corosync[26899]: [TOTEM ] A new membership (192.168.197.31:20396) was formed. Members
Jun 15 11:37:50 proxmox1 corosync[26899]: [QUORUM] Members[1]: 1
Jun 15 11:37:50 proxmox1 corosync[26899]: [MAIN ] Completed service synchronization, ready to provide service.
Jun 15 11:37:51 proxmox1 corosync[26899]: [TOTEM ] A new membership (192.168.197.31:20400) was formed. Members
Jun 15 11:37:51 proxmox1 corosync[26899]: [QUORUM] Members[1]: 1
Jun 15 11:37:51 proxmox1 corosync[26899]: [MAIN ] Completed service synchronization, ready to provide service.
Jun 15 11:37:53 proxmox1 corosync[26899]: [TOTEM ] A new membership (192.168.197.31:20404) was formed. Members
Jun 15 11:37:53 proxmox1 corosync[26899]: [QUORUM] Members[1]: 1
Jun 15 11:37:53 proxmox1 corosync[26899]: [MAIN ] Completed service synchronization, ready to provide service.
Jun 15 11:37:54 proxmox1 corosync[26899]: [TOTEM ] A new membership (192.168.197.31:20408) was formed. Members
Jun 15 11:37:54 proxmox1 corosync[26899]: [QUORUM] Members[1]: 1
Jun 15 11:37:54 proxmox1 corosync[26899]: [MAIN ] Completed service synchronization, ready to provide service.
Jun 15 11:37:55 proxmox1 corosync[26899]: [TOTEM ] A new membership (192.168.197.31:20412) was formed. Members
Jun 15 11:37:55 proxmox1 corosync[26899]: [QUORUM] Members[1]: 1
Jun 15 11:37:55 proxmox1 corosync[26899]: [MAIN ] Completed service synchronization, ready to provide service.
Jun 15 11:37:57 proxmox1 corosync[26899]: [TOTEM ] A new membership (192.168.197.31:20416) was formed. Members
Jun 15 11:37:57 proxmox1 corosync[26899]: [QUORUM] Members[1]: 1
Jun 15 11:37:57 proxmox1 corosync[26899]: [MAIN ] Completed service synchronization, ready to provide service.
Jun 15 11:37:58 proxmox1 corosync[26899]: [TOTEM ] A new membership (192.168.197.31:20420) was formed. Members
Jun 15 11:37:58 proxmox1 corosync[26899]: [QUORUM] Members[1]: 1
Jun 15 11:37:58 proxmox1 corosync[26899]: [MAIN ] Completed service synchronization, ready to provide service.
Jun 15 11:38:00 proxmox1 corosync[26899]: [TOTEM ] A new membership (192.168.197.31:20424) was formed. Members
Jun 15 11:38:00 proxmox1 corosync[26899]: [QUORUM] Members[1]: 1
Jun 15 11:38:00 proxmox1 corosync[26899]: [MAIN ] Completed service synchronization, ready to provide service.
Jun 15 11:38:01 proxmox1 corosync[26899]: [TOTEM ] A new membership (192.168.197.31:20428) was formed. Members
Jun 15 11:38:01 proxmox1 corosync[26899]: [QUORUM] Members[1]: 1
Jun 15 11:38:01 proxmox1 corosync[26899]: [MAIN ] Completed service synchronization, ready to provide service.
Jun 15 11:38:03 proxmox1 corosync[26899]: [TOTEM ] A new membership (192.168.197.31:20432) was formed. Members
Jun 15 11:38:03 proxmox1 corosync[26899]: [QUORUM] Members[1]: 1
Jun 15 11:38:03 proxmox1 corosync[26899]: [MAIN ] Completed service synchronization, ready to provide service.
Jun 15 11:38:03 proxmox1 corosync[26899]: [TOTEM ] A new membership (192.168.197.31:20436) was formed. Members joined: 2
Jun 15 11:38:03 proxmox1 pmxcfs[2878]: [dcdb] notice: members: 1/2878, 2/2964
Jun 15 11:38:03 proxmox1 pmxcfs[2878]: [dcdb] notice: starting data syncronisation
Jun 15 11:38:03 proxmox1 corosync[26899]: [QUORUM] This node is within the primary component and will provide service.
Jun 15 11:38:03 proxmox1 corosync[26899]: [QUORUM] Members[2]: 1 2
Jun 15 11:38:03 proxmox1 corosync[26899]: [MAIN ] Completed service synchronization, ready to provide service.

what could be the problem?

Version: pve-manager/4.2-13/3dd7731b (running kernel: 4.4.10-1-pve)

root@proxmox1:/etc/snmp# pvecm status
Quorum information
------------------
Date: Wed Jun 15 12:27:04 2016
Quorum provider: corosync_votequorum
Nodes: 1
Node ID: 0x00000001
Ring ID: 21312
Quorate: No

Votequorum information
----------------------
Expected votes: 2
Highest expected: 2
Total votes: 1
Quorum: 2 Activity blocked
Flags:

Membership information
----------------------
Nodeid Votes Name
0x00000001 1 192.168.197.31 (local)

 

[wosp]

Test multicast traffic, please see https://pve.proxmox.com/wiki/Multicast_notes#Testing_multicast.

 

[q16marvin]

pvecm status show no multicast address?!

root@proxmox2:~# pvecm status
Quorum information
------------------
Date:             Thu Jun 16 09:22:35 2016
Quorum provider:  corosync_votequorum
Nodes:            2
Node ID:          0x00000002
Ring ID:          22876
Quorate:          Yes

Votequorum information
----------------------
Expected votes:   2
Highest expected: 2
Total votes:      2
Quorum:           2
Flags:            Quorate

Membership information
----------------------
    Nodeid      Votes Name
0x00000001          1 192.168.197.31
0x00000002          1 192.168.197.37 (local)

 

[wosp]

You run PVE 4.x, so:

corosync-cmapctl -g totem.interface.0.mcastaddr