[Pacemaker] CMAN nodes online
Gopalakrishnan N
gopalakrishnan.an at gmail.com
Tue Sep 17 09:26:50 UTC 2013
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
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>>>> >
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>>>>
>>>> <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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