[ClusterLabs] CentOS 7 - Corosync configuration

[Willi Fehler]

Hi Michael,

I have only 2 nodes. I've already restart Corosync on both nodes. 
Nothing changed.

[root at linsrv006 corosync]# uname -n
linsrv006.willi-net.local

[root at linsrv007 ~]# uname -n
linsrv007.willi-net.local

[root at linsrv006 corosync]# cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 
localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 
localhost6.localdomain6
10.10.10.1    linsrv006
10.10.10.2    linsrv007

[root at linsrv007 ~]# cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 
localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 
localhost6.localdomain6
10.10.10.1    linsrv006
10.10.10.2    linsrv007

10.10.10.2    linsrv007

[root at linsrv006 corosync]# corosync-cfgtool -s
Printing ring status.
Local node ID 1
RING ID 0
     id    = 192.168.0.9
     status    = ring 0 active with no faults
RING ID 1
     id    = 10.10.10.1
     status    = ring 1 active with no faults

Regards - Willi

Am 06.03.15 um 09:36 schrieb Michael Schwartzkopff:
> Am Freitag, 6. März 2015, 09:24:25 schrieb Willi Fehler:
>> Hi,
>>
>> I'm trying to build a Pacemaker/Corosync Cluster on CentOS7. The default
>> Corosync configuration with one ring is working but then I only have 1
>> ring and no encryption.
>>
>> RING ID 1
>>       id    = 10.10.10.1
>>       status    = ring 1 active with no faults
>>
>> I've tried to activate the following configuration but it doesn't work.
>>
>> [root at linsrv006 corosync]# cat /etc/corosync/corosync.conf
>> totem {
>>           version: 2
>>           secauth: on
>>           threads: 0
>>           rrp_mode: active
>>           interface {
>>                   ringnumber: 0
>>                   bindnetaddr: 192.168.0.0
>>                   mcastaddr: 226.94.42.7
>>                   mcastport: 5411
>>           }
>>           interface {
>>                   ringnumber: 1
>>                   bindnetaddr: 10.10.10.0
>>                   mcastaddr: 226.94.42.11
>>                   mcastport: 5419
>>           }
>>           token: 10000
>>           token_retransmits_before_loss_const: 40
>>           rrp_problem_count_timeout: 20000
>>           nodeid: 3
>> }
>> quorum {
>>       provider: corosync_votequorum
>>       expected_votes: 3
>> }
>>
>> logging {
>> to_syslog: yes
>> }
>>
>>
>> The problem is also than, that pcs status is showing 3 nodes.
>>
>> [root at linsrv006 corosync]# pcs status
>> Cluster name:
>> Last updated: Fri Mar  6 09:10:41 2015
>> Last change: Fri Mar  6 09:10:30 2015 via crmd on linsrv006.willi-net.local
>> Stack: corosync
>> Current DC: NONE
>> 4 Nodes configured
>> 9 Resources configured
>>
>>
>> OFFLINE: [ linsrv006 linsrv006.willi-net.local linsrv006.willi-net.local
>> linsrv007 ]
> Corosync knows even 4 nodes.
> How many nodes do you have? What is their "uname -u"?
> What does corosync-objctl say?
> What happens if you stop corosync on all nodes and start it again?
>
>
> Mit freundlichen Grüßen,
>
> Michael Schwartzkopff
>
>
>
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