Best Practice Fencing Method for Cluster Environment Production

Latest response

Hi Guys,

I just implemented 4 servers to be clustered using High Availability Add Ons. Our servers are HP Proliant DL380 G8 and unfortunately there are no license ILO. What is the best practice of fencing method with this environment ? should i use IPMI to fencing ?

Thanks in advance

Responses

Hi,

You can refer the follow address in order to get more information about the Fence Devices and his parameters:

https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html-single/Cluster_Administration/index.html#ap-fence-device-param-CA

Please take a look also in the document below to know the Fence Device and Agent Matrix

Fence Device and Agent Information for Red Hat Enterprise Linux
https://access.redhat.com/site/articles/28603

Regards,

Anderson Kaiser

Hi, 

thanks for the quick reply,

your first link is not working, it said "page not found".

and thanks for the second link information of Fence Device and Agent Matrix

Hi,

You can try this one: red.ht/18SqSn7

Regards,

Anderson Kaiser

Hi,

Yes, you can use IPMI for fencing. It is suggested by redhat. but remember, you are using ILO, so far I know DL380 G8 is using ILO-v3 which supports IPMI but its a enternal fencing. If I am not wrong, RedHat best practise is using external fencing like APC Power switch. which is cost you a lot. As you have ILO for IPMI u may use it for fencing nodes. After configuring test the node by fence_node command from another node.

 

Please suggets if I am wrong.

Have a good day. 

Hi,
Yes, our servers have an ILO feature, but without the license. So i think the feature of ILO is not activated yet, unless we buy the licenses.
Is it possible to do fence the node using IPMI without ILO?
Do you have an sample configuration that can be my reference?

Thanks n advance,

Hi,
Do you have some reference step by step configure fence using fibre channel? We have san switch brocade connected to these member cluster servers and we want to try this fencing method.

Thanks in advance.

Regards,
Aldi

Hi,

You could use the steps descrined in following cluster administration guide for detailed information about how to configure fence agent using Brocade FC switches:

"5.3. Brocade Fabric Switch"
https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html-single/Fence_Configuration_Guide/index.html#s1-software-fence-brocade-CA

Cheers,
Milan.