My first thought (kinda off the cuff really) is this:
Create the new server with the same name as the old master
Install the HA binaries
Copy the ha.cf file from the backup node to the new node
Copy the/etc/ha.d/authkeys file form the backup server to the new
server.
Copy the crm configuration files over, i.e.
/var/lib/heartbeat/crm/cib.xml and /var/lib/heartbeat/crm/cib.xml.sig
Copy any application related config files over, i.e. apache.conf,
/etc/init.d/mysql and so on.
Start heartbeat on the new node and it should join in with the cluster
unless I missed something.
Good luck. Let me know how it goes. I'd be interested in knowing if I
missed something.
-mgb
On 11-07-29 02:47 PM, Hai Tao wrote:
> I have a two nodes cluster. The master is dead, and the application has
> failed over to the slave now. I need to replace the master with a new server.
> The question is, how can I make the current node accept the new node as its
> peer, and make a new cluster?
>
>
> Thanks.
>
>
>
>> From: [email protected]
>> To: [email protected]
>> Date: Fri, 22 Jul 2011 13:58:55 -0700
>> Subject: Re: [Linux-HA] Does HA monitor its resources?
>>
>>
>> How can I disable HA without stopping the resources then?
>>
>> I like to disable HA by stopping the heartbeat, but once I do that a
>> failover will happen, but I do not want that.
>>
>> Thanks.
>>
>> Hai Tao
>>
>>
>>
>>> Date: Fri, 22 Jul 2011 17:23:58 -0300
>>> From: [email protected]
>>> To: [email protected]
>>> Subject: Re: [Linux-HA] Does HA monitor its resources?
>>>
>>> It should re-enable it yes. Incidentally, you can set the number of
>>> times it will do this in your cib.xml file in /var/lib/heartbeat/crm.
>>>
>>> For instance, on one of my clusters I only want the resource re-started
>>> 3 times. On a fourth failure I want it to do a failover. I set it with
>>> this entry in the cib.xml:
>>>
>>> <nvpair id="nvpair.id17897906"
>>> name="default-resource-failure-stickiness" value="500000"/>
>>>
>>> Hope this helps.
>>>
>>> -mike
>>>
>>>
>>> On 11-07-22 02:55 PM, Hai Tao wrote:
>>>> Does HA monitor its resources? If I manually disable the floating IP, (for
>>>> example, ifdown eth0:0), will HA be able to detect that and re-enable the
>>>> IP?
>>>>
>>>>
>>>> Thanks.
>>>>
>>>> Hai Tao
>>>>
>>>>
>>>>
>>>>
>>>> _______________________________________________
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>>>> See also: http://linux-ha.org/ReportingProblems
>>>>
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>
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>
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