[Pacemaker] CMAN nodes online
Gopalakrishnan N
gopalakrishnan.an at gmail.com
Tue Sep 17 09:29:11 UTC 2013
But now pacemaker not able to connect with cib, connection refused,
[root at test01 ~]# crm_mon -1
Could not establish cib_ro connection: Connection refused (111)
Connection to cluster failed: Transport endpoint is not connected
On Tue, Sep 17, 2013 at 5:26 PM, Gopalakrishnan N <
gopalakrishnan.an at gmail.com> wrote:
> Now am able to see both nodes are registered...
>
> Node Sts Inc Joined Name
> 1 M 124 2013-09-17 22:05:31 test01.iopextech.com
> 2 M 132 2013-09-17 22:31:33 test02.iopextech.com
>
> Is there any timeout option, where i can increase or decrease based on
> this?
>
> Thanks..
>
>
> On Tue, Sep 17, 2013 at 4:53 PM, Gopalakrishnan N <
> gopalakrishnan.an at gmail.com> wrote:
>
>> Even after giving FQDN in my /etc/hosts and /etc/sysconf/network also
>> updated in cluster.conf, propogated to other node as well, but still its
>> showing only one node. And muticast also enabled in my switch.
>>
>>
>>
>>
>> On Mon, Sep 16, 2013 at 11:52 PM, Gopalakrishnan N <
>> gopalakrishnan.an at gmail.com> wrote:
>>
>>> My /etc/hosts is like this,
>>> cat /etc/hosts
>>> 127.0.0.1 localhost localhost.localdomain localhost4
>>> localhost4.localdomain4
>>> ::1 localhost localhost.localdomain localhost6
>>> localhost6.localdomain6
>>> 10.30.2.98 test01.iopextech.com test01
>>> 10.30.2.99 test02.iopextech.com test02
>>>
>>>
>>> and in my cluster.conf i have given the short name. So what you are
>>> saying better to use FQDN...!
>>>
>>> I will try to give FQDN in all my configuration files.
>>>
>>> And will try. Let's see.
>>>
>>> Thanks for your comments.
>>>
>>>
>>>
>>> On Mon, Sep 16, 2013 at 11:41 PM, Florian Crouzat <
>>> gentoo at floriancrouzat.net> wrote:
>>>
>>>> Le 16/09/2013 17:30, Gopalakrishnan N a écrit :
>>>>
>>>>> Hey Guys,
>>>>>
>>>>> The OS am running is CentOS 6.4 (64bit) and I have disabled IPtables
>>>>> and
>>>>> SeLinux.
>>>>>
>>>>> My goal is to make Apache Tomcat as HA. As a first step thought of
>>>>> testing with Apache.
>>>>>
>>>>> My network setup is like this,
>>>>> Node1 is connected to switch
>>>>> Note2 is connected to switch.
>>>>>
>>>>> My cluster.conf file is as follows,
>>>>> [root at test01 ~]# cat /etc/cluster/cluster.conf
>>>>> <?xml version="1.0"?>
>>>>> <cluster config_version="1" name="mycluster1">
>>>>> <logging debug="off"/>
>>>>> <clusternodes>
>>>>> <clusternode name="test01" nodeid="1">
>>>>> <fence>
>>>>> <method name="pcmk-redirect">
>>>>> <device name="pcmk" port="test01"/>
>>>>> </method>
>>>>> </fence>
>>>>> </clusternode>
>>>>> <clusternode name="test02" nodeid="2">
>>>>> <fence>
>>>>> <method name="pcmk-redirect">
>>>>> <device name="pcmk" port="test02"/>
>>>>> </method>
>>>>> </fence>
>>>>> </clusternode>
>>>>> </clusternodes>
>>>>> <fencedevices>
>>>>> <fencedevice name="pcmk" agent="fence_pcmk"/>
>>>>> </fencedevices>
>>>>> </cluster>
>>>>>
>>>>>
>>>>> And @some point of time am able to see both nodes are registered,
>>>>> [root at test01 ~]# cman_tool nodes
>>>>> Node Sts Inc Joined Name
>>>>> 1 M 104 2013-09-17 02:01:11 test01
>>>>> 2 M 108 2013-09-17 02:15:07 test02
>>>>>
>>>>> And @sometimes with crm_mon -1, I get the following
>>>>>
>>>>> [root at test01 ~]# crm_mon -1
>>>>> Last updated: Tue Sep 17 02:47:27 2013
>>>>> Last change: Tue Sep 17 00:42:43 2013 via crmd on test01
>>>>> Stack: cman
>>>>> Current DC: NONE
>>>>> 4 Nodes configured, 2 expected votes
>>>>> 0 Resources configured.
>>>>>
>>>>>
>>>>> Node test01: UNCLEAN (offline)
>>>>> Node test01.iopextech.com <http://test01.iopextech.com>: UNCLEAN
>>>>> (offline)
>>>>> Node test02: UNCLEAN (offline)
>>>>> Node test02.iopextech.com <http://test02.iopextech.com>: UNCLEAN
>>>>> (offline)
>>>>>
>>>>> Thanks.
>>>>>
>>>>>
>>>> Ok, if you are still unhappy with CMAN check your switch for multicast.
>>>>
>>>> From there, I assume you are happy with cman otherwise there are no
>>>> reasons to start pacemaker, but you did, so you get my point ;)
>>>>
>>>> This kind of errors often indicates that your /etc/hosts or DNS is
>>>> wrong and pacemaker has a hard time to map hostnames and IPs, etc (not sure
>>>> about the internals there...)
>>>> Get rid of the invalid nodes by editing the configuration; stop
>>>> pacemaker; fix your resolutions and retry.
>>>>
>>>> In the entire process, I usually use FQDN in my cluster.conf file, and
>>>> I add them and the corresponding ring IP in my /etc/hosts file on all
>>>> nodes. I also use the same FQDN in my pacemaker configuration.
>>>>
>>>> Cheers
>>>>
>>>>
>>>>
>>>>>
>>>>>
>>>>> On Mon, Sep 16, 2013 at 8:40 PM, Florian Crouzat
>>>>> <gentoo at floriancrouzat.net <mailto:gentoo at floriancrouzat.**net<gentoo at floriancrouzat.net>>>
>>>>> wrote:
>>>>>
>>>>> Le 16/09/2013 14:18, Gopalakrishnan N a écrit :
>>>>>
>>>>> Do I need to have a cross over cable between each node? Is it
>>>>> mandatory?
>>>>>
>>>>>
>>>>> Nop it doesn't.
>>>>> In your case, I'd check the network architecture and/or firewalling
>>>>> regarding multicast. You probably either have wrong iptables and/or
>>>>> a switch dropping your multicast corosync ring(s).
>>>>>
>>>>> Also, please, as Andreas said: try to communicate with us in a more
>>>>> efficient way: more context, more informations and more output
>>>>> (pasted somewhere).
>>>>>
>>>>> We are happy to help people, but we don't have to waste our time
>>>>> trying to understand what these exact people doesn't tell us
>>>>> because
>>>>> they are lazy.
>>>>>
>>>>> ps: also use 'corosync-objctl' ; it's a good command to debug rings
>>>>> and configurations.
>>>>>
>>>>> Cheers,
>>>>> Florian.
>>>>>
>>>>>
>>>>>
>>>>> On Mon, Sep 16, 2013 at 8:01 PM, Gopalakrishnan N
>>>>> <gopalakrishnan.an at gmail.com
>>>>> <mailto:gopalakrishnan.an@**gmail.com<gopalakrishnan.an at gmail.com>
>>>>> >
>>>>> <mailto:gopalakrishnan.an at __gm**ail.com <http://gmail.com>
>>>>>
>>>>> <mailto:gopalakrishnan.an@**gmail.com<gopalakrishnan.an at gmail.com>>>>
>>>>> wrote:
>>>>>
>>>>> Again the when i restarted the pacemaker and cman not the
>>>>> nodes are
>>>>> not in online, back to square 1.
>>>>>
>>>>> node1 shows only node1 online, and node2 says node2
>>>>> online.
>>>>> I don't
>>>>> know what's happening in the background...
>>>>>
>>>>> Any advice would be appreciated..
>>>>>
>>>>> Thanks.
>>>>>
>>>>>
>>>>> On Mon, Sep 16, 2013 at 6:47 PM, Gopalakrishnan N
>>>>> <gopalakrishnan.an at gmail.com
>>>>> <mailto:gopalakrishnan.an@**gmail.com<gopalakrishnan.an at gmail.com>
>>>>> >
>>>>> <mailto:gopalakrishnan.an at __gm**ail.com <http://gmail.com>
>>>>>
>>>>> <mailto:gopalakrishnan.an@**gmail.com<gopalakrishnan.an at gmail.com>
>>>>> >>>
>>>>>
>>>>> wrote:
>>>>>
>>>>> Hi guys,
>>>>>
>>>>> I got it, basically it tool some time to propogate and
>>>>> now two
>>>>> nodes are showing online...
>>>>>
>>>>> Thanks.
>>>>>
>>>>>
>>>>> On Mon, Sep 16, 2013 at 6:39 PM, Gopalakrishnan N
>>>>> <gopalakrishnan.an at gmail.com
>>>>> <mailto:gopalakrishnan.an@**gmail.com<gopalakrishnan.an at gmail.com>
>>>>> >
>>>>> <mailto:gopalakrishnan.an at __gm**ail.com<http://gmail.com>
>>>>>
>>>>> <mailto:gopalakrishnan.an@**gmail.com<gopalakrishnan.an at gmail.com>>>>
>>>>> wrote:
>>>>>
>>>>> I have configured CMAN as per the link
>>>>> http://clusterlabs.org/doc/en-**__US/Pacemaker/1.1-plugin/**
>>>>> html-__single/Clusters_from_**Scratch/__index.html#_**configuring_cman<http://clusterlabs.org/doc/en-__US/Pacemaker/1.1-plugin/html-__single/Clusters_from_Scratch/__index.html#_configuring_cman>
>>>>>
>>>>> <http://clusterlabs.org/doc/**en-US/Pacemaker/1.1-plugin/**
>>>>> html-single/Clusters_from_**Scratch/index.html#_**configuring_cman<http://clusterlabs.org/doc/en-US/Pacemaker/1.1-plugin/html-single/Clusters_from_Scratch/index.html#_configuring_cman>
>>>>> >
>>>>> but
>>>>> when I type cman_tools nodes only one node is
>>>>> online even
>>>>> thought the cluster.conf is propogated in other
>>>>> node as well.
>>>>>
>>>>> what could be the reason, in node1, cman_tool
>>>>> nodes
>>>>> shows
>>>>> only node1 online, in node2 it shows only node2 is
>>>>> online.
>>>>> How to make two nodes as online, even thought CMAN
>>>>> service
>>>>> is running in both nodes.
>>>>>
>>>>> Thanks in advance.
>>>>>
>>>>> Regards,
>>>>> Gopal
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> ______________________________**___________________
>>>>> Pacemaker mailing list: Pacemaker at oss.clusterlabs.org
>>>>> <mailto:Pacemaker at oss.**clusterlabs.org<Pacemaker at oss.clusterlabs.org>
>>>>> >
>>>>> http://oss.clusterlabs.org/__**mailman/listinfo/pacemaker<http://oss.clusterlabs.org/__mailman/listinfo/pacemaker>
>>>>>
>>>>> <http://oss.clusterlabs.org/**mailman/listinfo/pacemaker<http://oss.clusterlabs.org/mailman/listinfo/pacemaker>
>>>>> >
>>>>>
>>>>> Project Home: http://www.clusterlabs.org
>>>>> Getting started:
>>>>> http://www.clusterlabs.org/__**doc/Cluster_from_Scratch.pdf<http://www.clusterlabs.org/__doc/Cluster_from_Scratch.pdf>
>>>>>
>>>>> <http://www.clusterlabs.org/**doc/Cluster_from_Scratch.pdf<http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf>
>>>>> >
>>>>> Bugs: http://bugs.clusterlabs.org
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Cheers,
>>>>> Florian Crouzat
>>>>>
>>>>> ______________________________**___________________
>>>>> Pacemaker mailing list: Pacemaker at oss.clusterlabs.org
>>>>> <mailto:Pacemaker at oss.**clusterlabs.org<Pacemaker at oss.clusterlabs.org>
>>>>> >
>>>>> http://oss.clusterlabs.org/__**mailman/listinfo/pacemaker<http://oss.clusterlabs.org/__mailman/listinfo/pacemaker>
>>>>>
>>>>> <http://oss.clusterlabs.org/**mailman/listinfo/pacemaker<http://oss.clusterlabs.org/mailman/listinfo/pacemaker>
>>>>> >
>>>>>
>>>>> Project Home: http://www.clusterlabs.org
>>>>> Getting started:
>>>>> http://www.clusterlabs.org/__**doc/Cluster_from_Scratch.pdf<http://www.clusterlabs.org/__doc/Cluster_from_Scratch.pdf>
>>>>>
>>>>> <http://www.clusterlabs.org/**doc/Cluster_from_Scratch.pdf<http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf>
>>>>> >
>>>>> Bugs: http://bugs.clusterlabs.org
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> ______________________________**_________________
>>>>> Pacemaker mailing list: Pacemaker at oss.clusterlabs.org
>>>>> http://oss.clusterlabs.org/**mailman/listinfo/pacemaker<http://oss.clusterlabs.org/mailman/listinfo/pacemaker>
>>>>>
>>>>> Project Home: http://www.clusterlabs.org
>>>>> Getting started: http://www.clusterlabs.org/**
>>>>> doc/Cluster_from_Scratch.pdf<http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf>
>>>>> Bugs: http://bugs.clusterlabs.org
>>>>>
>>>>>
>>>>
>>>> --
>>>> Cheers,
>>>> Florian Crouzat
>>>>
>>>> ______________________________**_________________
>>>> Pacemaker mailing list: Pacemaker at oss.clusterlabs.org
>>>> http://oss.clusterlabs.org/**mailman/listinfo/pacemaker<http://oss.clusterlabs.org/mailman/listinfo/pacemaker>
>>>>
>>>> Project Home: http://www.clusterlabs.org
>>>> Getting started: http://www.clusterlabs.org/**
>>>> doc/Cluster_from_Scratch.pdf<http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf>
>>>> Bugs: http://bugs.clusterlabs.org
>>>>
>>>
>>>
>>
>
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