[ClusterLabs] [ClusterLab] : Unable to bring up pacemaker
Sriram
sriram.ec at gmail.com
Fri Apr 29 09:14:37 UTC 2016
Hi,
I went ahead and made some changes in file system(Like I brought in
/etc/init.d/corosync and /etc/init.d/pacemaker, /etc/sysconfig ), After
that I was able to run "pcs cluster start".
But it failed with the following error
# pcs cluster start
Starting Cluster...
Starting Pacemaker Cluster Manager[FAILED]
Error: unable to start pacemaker
And in the /var/log/pacemaker.log, I saw these errors
pacemakerd: info: mcp_read_config: cmap connection setup failed:
CS_ERR_TRY_AGAIN. Retrying in 4s
Apr 29 08:53:47 [15863] node_cu pacemakerd: info: mcp_read_config:
cmap connection setup failed: CS_ERR_TRY_AGAIN. Retrying in 5s
Apr 29 08:53:52 [15863] node_cu pacemakerd: warning: mcp_read_config:
Could not connect to Cluster Configuration Database API, error 6
Apr 29 08:53:52 [15863] node_cu pacemakerd: notice: main: Could not
obtain corosync config data, exiting
Apr 29 08:53:52 [15863] node_cu pacemakerd: info: crm_xml_cleanup:
Cleaning up memory from libxml2
And in the /var/log/Debuglog, I saw these errors coming from corosync
20160429 085347.487050 airv_cu daemon.warn corosync[12857]: [QB ]
Denied connection, is not ready (12857-15863-14)
20160429 085347.487067 airv_cu daemon.info corosync[12857]: [QB ]
Denied connection, is not ready (12857-15863-14)
I browsed the code of libqb to find that it is failing in
https://github.com/ClusterLabs/libqb/blob/master/lib/ipc_setup.c
Line 600 :
handle_new_connection function
Line 637:
if (auth_result == 0 && c->service->serv_fns.connection_accept) {
res = c->service->serv_fns.connection_accept(c,
c->euid, c->egid);
}
if (res != 0) {
goto send_response;
}
Any hints on this issue would be really helpful for me to go ahead.
Please let me know if any logs are required,
Regards,
Sriram
On Thu, Apr 28, 2016 at 2:42 PM, Sriram <sriram.ec at gmail.com> wrote:
> Thanks Ken and Emmanuel.
> Its a big endian machine. I will try with running "pcs cluster setup" and
> "pcs cluster start"
> Inside cluster.py, "service pacemaker start" and "service corosync start"
> are executed to bring up pacemaker and corosync.
> Those service scripts and the infrastructure needed to bring up the
> processes in the above said manner doesn't exist in my board.
> As it is a embedded board with the limited memory, full fledged linux is
> not installed.
> Just curious to know, what could be reason the pacemaker throws that error.
>
>
>
> *"cmap connection setup failed: CS_ERR_TRY_AGAIN. Retrying in 1s"*
> Thanks for response.
>
> Regards,
> Sriram.
>
> On Thu, Apr 28, 2016 at 8:55 AM, Ken Gaillot <kgaillot at redhat.com> wrote:
>
>> On 04/27/2016 11:25 AM, emmanuel segura wrote:
>> > you need to use pcs to do everything, pcs cluster setup and pcs
>> > cluster start, try to use the redhat docs for more information.
>>
>> Agreed -- pcs cluster setup will create a proper corosync.conf for you.
>> Your corosync.conf below uses corosync 1 syntax, and there were
>> significant changes in corosync 2. In particular, you don't need the
>> file created in step 4, because pacemaker is no longer launched via a
>> corosync plugin.
>>
>> > 2016-04-27 17:28 GMT+02:00 Sriram <sriram.ec at gmail.com>:
>> >> Dear All,
>> >>
>> >> I m trying to use pacemaker and corosync for the clustering
>> requirement that
>> >> came up recently.
>> >> We have cross compiled corosync, pacemaker and pcs(python) for ppc
>> >> environment (Target board where pacemaker and corosync are supposed to
>> run)
>> >> I m having trouble bringing up pacemaker in that environment, though I
>> could
>> >> successfully bring up corosync.
>> >> Any help is welcome.
>> >>
>> >> I m using these versions of pacemaker and corosync
>> >> [root at node_cu pacemaker]# corosync -v
>> >> Corosync Cluster Engine, version '2.3.5'
>> >> Copyright (c) 2006-2009 Red Hat, Inc.
>> >> [root at node_cu pacemaker]# pacemakerd -$
>> >> Pacemaker 1.1.14
>> >> Written by Andrew Beekhof
>> >>
>> >> For running corosync, I did the following.
>> >> 1. Created the following directories,
>> >> /var/lib/pacemaker
>> >> /var/lib/corosync
>> >> /var/lib/pacemaker
>> >> /var/lib/pacemaker/cores
>> >> /var/lib/pacemaker/pengine
>> >> /var/lib/pacemaker/blackbox
>> >> /var/lib/pacemaker/cib
>> >>
>> >>
>> >> 2. Created a file called corosync.conf under /etc/corosync folder with
>> the
>> >> following contents
>> >>
>> >> totem {
>> >>
>> >> version: 2
>> >> token: 5000
>> >> token_retransmits_before_loss_const: 20
>> >> join: 1000
>> >> consensus: 7500
>> >> vsftype: none
>> >> max_messages: 20
>> >> secauth: off
>> >> cluster_name: mycluster
>> >> transport: udpu
>> >> threads: 0
>> >> clear_node_high_bit: yes
>> >>
>> >> interface {
>> >> ringnumber: 0
>> >> # The following three values need to be set based on
>> your
>> >> environment
>> >> bindnetaddr: 10.x.x.x
>> >> mcastaddr: 226.94.1.1
>> >> mcastport: 5405
>> >> }
>> >> }
>> >>
>> >> logging {
>> >> fileline: off
>> >> to_syslog: yes
>> >> to_stderr: no
>> >> to_syslog: yes
>> >> logfile: /var/log/corosync.log
>> >> syslog_facility: daemon
>> >> debug: on
>> >> timestamp: on
>> >> }
>> >>
>> >> amf {
>> >> mode: disabled
>> >> }
>> >>
>> >> quorum {
>> >> provider: corosync_votequorum
>> >> }
>> >>
>> >> nodelist {
>> >> node {
>> >> ring0_addr: node_cu
>> >> nodeid: 1
>> >> }
>> >> }
>> >>
>> >> 3. Created authkey under /etc/corosync
>> >>
>> >> 4. Created a file called pcmk under /etc/corosync/service.d and
>> contents as
>> >> below,
>> >> cat pcmk
>> >> service {
>> >> # Load the Pacemaker Cluster Resource Manager
>> >> name: pacemaker
>> >> ver: 1
>> >> }
>> >>
>> >> 5. Added the node name "node_cu" in /etc/hosts with 10.X.X.X ip
>> >>
>> >> 6. ./corosync -f -p & --> this step started corosync
>> >>
>> >> [root at node_cu pacemaker]# netstat -alpn | grep -i coros
>> >> udp 0 0 10.X.X.X:61841 0.0.0.0:*
>> >> 9133/corosync
>> >> udp 0 0 10.X.X.X:5405 0.0.0.0:*
>> >> 9133/corosync
>> >> unix 2 [ ACC ] STREAM LISTENING 148888 9133/corosync
>> >> @quorum
>> >> unix 2 [ ACC ] STREAM LISTENING 148884 9133/corosync
>> >> @cmap
>> >> unix 2 [ ACC ] STREAM LISTENING 148887 9133/corosync
>> >> @votequorum
>> >> unix 2 [ ACC ] STREAM LISTENING 148885 9133/corosync
>> >> @cfg
>> >> unix 2 [ ACC ] STREAM LISTENING 148886 9133/corosync
>> >> @cpg
>> >> unix 2 [ ] DGRAM 148840 9133/corosync
>> >>
>> >> 7. ./pacemakerd -f & gives the following error and exits.
>> >> [root at node_cu pacemaker]# pacemakerd -f
>> >> cmap connection setup failed: CS_ERR_TRY_AGAIN. Retrying in 1s
>> >> cmap connection setup failed: CS_ERR_TRY_AGAIN. Retrying in 2s
>> >> cmap connection setup failed: CS_ERR_TRY_AGAIN. Retrying in 3s
>> >> cmap connection setup failed: CS_ERR_TRY_AGAIN. Retrying in 4s
>> >> cmap connection setup failed: CS_ERR_TRY_AGAIN. Retrying in 5s
>> >> Could not connect to Cluster Configuration Database API, error 6
>> >>
>> >> Can you please point me, what is missing in these steps ?
>> >>
>> >> Before trying these steps, I tried running "pcs cluster start", but
>> that
>> >> command fails with "service" script not found. As the root filesystem
>> >> doesn't contain either /etc/init.d/ or /sbin/service
>> >>
>> >> So, the plan is to bring up corosync and pacemaker manually, later do
>> the
>> >> cluster configuration using "pcs" commands.
>> >>
>> >> Regards,
>> >> Sriram
>> >>
>> >> _______________________________________________
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>> >
>> >
>> >
>>
>>
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>
>
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