Andrew Beekhof escribió:
On 7/9/07, Adrian Chapela <[EMAIL PROTECTED]> wrote:
Andrew Beekhof escribió:
> On 7/6/07, Adrian Chapela <[EMAIL PROTECTED]> wrote:
>>
>> This rule is quite simple but I can't understand well.
>>
>> <rule id="my_resource:connected:rule" score="-INFINITY"
>> boolean_op="or">
>> <expression id="my_resource:connected:expr:undefined"
>> attribute="pingd" operation="not_defined"/>
>> <expression id="my_resource:connected:expr:zero"
>> attribute="pingd" operation="lte" value="0"/>
>> </rule>
>>
>> The first expression check if the attribute pingd is defined (I
>> think...) and the second expression compares the same attribute
with 0.
>> My problem is, What it's this attribute ?? Who update its value (I
>> think pingd, but the executable or the OCF script)??
>
>
> the OCF script is just a wrapper for the executable
>
> have you read all of http://www.linux-ha.org/v2/faq/pingd ?
Yes, but I don't understand how can pingd update CIB to change the Score
with this rule ??
it doesn't change the rule, it changes a node attribute named "pingd"
Yes, It was I want to say...
the rule then looks this value up for each node the rule is applied on
How must my script do to update a similar rule ??
I only need a clone and the with a rule change a score to move the
IPAddr resource, can you explain me a bit ??
that depends, when would the IPaddr need to move?
Now, I have a OCF script that starts, stops, etc. the resource. This
script evaluate output of the start, status, stop operation and then use
the attrd_updater to change value of an attribute. The rule looks this
attribute and the change the score to move the resource group.
I want to move IPaddr because I have two mysql servers. One is the
master and the other is the slave. Pingd and MySQL must be started in
two nodes at the same time and only the VIP can be in one node (master
node). When master is down, it has a network failure or a resource
failure the VIP must be assigned to the slave. It will be a new master
at this time. At this moment I must execute a script to block the
connections on the mysql port, look for replication state, etc. but
this is another history!
Thank you.
>
>
>
> Now I think in the same rule for other resource:
>>
>> <rule id="my_resource:connected:rule" score="-INFINITY"
>> boolean_op="or">
>> <expression id="my_resource:connected:expr:undefined"
>> attribute="my_daemon" operation="not_defined"/>
>> <expression id="my_resource:connected:expr:zero"
>> attribute="my_daemon" operation="lte" value="0"/>
>> </rule>
>>
>> How can I do to update the value of this attribute ? If I can update
>> this value, I can force movement the resource group to another
node. My
>> it's only the rules, I don't understand how the script can to
interact
>> with the CIB.
>>
>> Thank you!!
>> _______________________________________________
>> Linux-HA mailing list
>> [email protected]
>> http://lists.linux-ha.org/mailman/listinfo/linux-ha
>> See also: http://linux-ha.org/ReportingProblems
>>
> _______________________________________________
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> http://lists.linux-ha.org/mailman/listinfo/linux-ha
> See also: http://linux-ha.org/ReportingProblems
>
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_______________________________________________
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Best regards,
Thank you!
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