[Pacemaker] No communication between nodes (setup problem)
Keith Ouellette
Keith.Ouellette at Airgas.com
Wed Jan 30 14:27:24 CET 2013
Hans,
Is the multicast port 5405 "opened" in the firewall? That has bitten me before.
Thanks,
Keith
________________________________
From: Hans Bert [dadeda2002 at yahoo.de]
Sent: Wednesday, January 30, 2013 8:22 AM
To: and k; The Pacemaker cluster resource manager
Subject: Re: [Pacemaker] No communication between nodes (setup problem)
Hi,
in the meantime I modified the configuration to check if it works with multicast
totem {
version: 2
secauth: off
cluster_name: mcscluster
interface {
ringnumber: 0
bindnetaddr: 192.168.100.0
mcastaddr: 239.255.1.12
mcastport: 5405
ttl: 1
}
}
but unfortunately it is still not working.
I started wireshark and I can see on both hosts MC packages from both hosts.
YES selinux is disabled on both nodes
[root at server1 corosync]# selinuxenabled
[root at server1 corosync]# echo $?
1
Something else I found out is:
[root at server1 corosync]# pcs status nodes both
Error mapping 192.168.100.111
Error mapping 192.168.100.112
Corosync Nodes:
Online:
Offline: 192.168.100.111 192.168.100.112
Pacemaker Nodes:
Online: server1
Standby:
Offline:
[root at server2 corosync]# pcs status nodes both
Error mapping 192.168.100.111
Error mapping 192.168.100.112
Corosync Nodes:
Online:
Offline: 192.168.100.111 192.168.100.112
Pacemaker Nodes:
Online: server2
Standby:
Offline:
any further hints?
Best regards,
Hans
________________________________
Hi,
It seem to be problem with network traffic.
Have you tried to sniff network traffic to be sure that udp traffic reaches from one node to another ??
Try on server1:
tcpdump -i interface -p udp -s 192.168.100.112
on server2:
tcpdump -i interface -p udp -s 192.168.100.111
if there will be no packet traffic, that means you have some network issue.
BTW: Is SELinux enabled on nodes ??
--
Regards
Andrew
2013/1/30 Hans Bert
Hello,
we had to move from Fedora 16 to Fedora 18 and wanted to set up Corosync with Pacemaker and PCS as management tool.
With F16 our cluster was running pretty good, but with F18 after 5 days we are reaching the point were we don't have
got ideas what might be the problem(s).
The cluster is build of two servers (server1=192.168.100.111; server2=192.168.100.112)
Based on the Howto for F18 with pcs we created the following corosync.conf:
totem {
version: 2
secauth: off
cluster_name: mcscluster
transport: udpu
}
nodelist {
node {
ring0_addr: 192.168.100.111
}
node {
ring0_addr: 192.168.100.112
}
}
quorum {
provider: corosync_votequorum
}
logging {
fileline: off
to_stderr: no
to_logfile: yes
to_syslog: yes
logfile: /var/log/cluster/corosync.log
debug: on
timestamp: on
}
After we started the server a status check shows us:
[root at server1 corosync]#pcs status corosync
Membership information
----------------------
Nodeid Votes Name
1868867776 1 server1 (local)
[root at server1 ~]# pcs status
Last updated: Wed Jan 30 10:45:17 2013
Last change: Wed Jan 30 10:18:56 2013 via cibadmin on server1
Stack: corosync
Current DC: server1 (1868867776) - partition WITHOUT quorum
Version: 1.1.8-3.fc18-394e906
1 Nodes configured, unknown expected votes
0 Resources configured.
Online: [ server1 ]
Full list of resources:
And on the other server:
[root at server2 corosync]# pcs status corosync
Membership information
----------------------
Nodeid Votes Name
1885644992 1 server2 (local)
[root at server2 corosync]# pcs status
Last updated: Wed Jan 30 10:44:40 2013
Last change: Wed Jan 30 10:19:36 2013 via cibadmin on server2
Stack: corosync
Current DC: server2 (1885644992) - partition WITHOUT quorum
Version: 1.1.8-3.fc18-394e906
1 Nodes configured, unknown expected votes
0 Resources configured.
Online: [ server2 ]
The only warnings and errors in the logfile are:
[root at server1 ~]# cat /var/log/cluster/corosync.log | egrep "warning|error"
Jan 30 10:25:59 [1608] server1 crmd: warning: do_log: FSA: Input I_DC_TIMEOUT from crm_timer_popped() received in state S_PENDING
Jan 30 10:25:59 [1607] server1 pengine: warning: cluster_status: We do not have quorum - fencing and resource management disabled
Jan 30 10:28:25 [1525] server1 corosync debug [QUORUM] getinfo response error: 1
Jan 30 10:40:59 [1607] server1 pengine: warning: cluster_status: We do not have quorum - fencing and resource management disabled
root at server2 corosync]# cat /var/log/cluster/corosync.log | egrep "warning|error"
Jan 30 10:27:18 [1458] server2 crmd: warning: do_log: FSA: Input I_DC_TIMEOUT from crm_timer_popped() received in state S_PENDING
Jan 30 10:27:18 [1457] server2 pengine: warning: cluster_status: We do not have quorum - fencing and resource management disabled
Jan 30 10:29:19 [1349] server2 corosync debug [QUORUM] getinfo response error: 1
Jan 30 10:42:18 [1457] server2 pengine: warning: cluster_status: We do not have quorum - fencing and resource management disabled
Jan 30 10:44:36 [1349] server2 corosync debug [QUORUM] getinfo response error: 1
We have installed the following packages:
corosync-2.2.0-1.fc18.i686
corosynclib-2.2.0-1.fc18.i686
drbd-bash-completion-8.3.13-1.fc18.i686
drbd-pacemaker-8.3.13-1.fc18.i686
drbd-utils-8.3.13-1.fc18.i686
pacemaker-1.1.8-3.fc18.i686
pacemaker-cli-1.1.8-3.fc18.i686
pacemaker-cluster-libs-1.1.8-3.fc18.i686
pacemaker-libs-1.1.8-3.fc18.i686
pcs-0.9.27-3.fc18.i686
Firewalls are disabled, Pinging and SSH communication is working without any problems.
With best regards
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