[ClusterLabs] Exception in adding resources to pacemaker

[Miroslav Lisik]

On 9/26/24 08:11, bixiaoyan wrote:
>
> After creating the group, there will be an error message when 
> modifying the group meta attribute. The code snippet is as follows:
>
> #/usr/sbin/pcs resource group add mygroupVGFS VIP PGSQL
>
> #stdout:
>
> #stderr:
>
> #retcode:0
>
> #/usr/sbin/pcs resource meta mygroupresource-stickiness=10
>
> #stdout:
>
> #stderr:Error:unable to find a resource/clone/group:mygroup
>
> #retcode:1
>
This is strage. After `pcs resource group add`, group should be in the
CIB in case there is no error. Are these commands executed in sequence
on the same node? Could you try to save the CIB before and after `pcs
resource meta` command?

@Ken:
Is there any chance that after executing `cibadmin --patch --verbose
--xml-pipe`, execution of `cibadmin --local --query` will not return
updated CIB?
>
>
> 在 2024-09-25 21:13:46，"Miroslav Lisik" <mlisik at redhat.com> 写道：
> >I'm forwarding this e-mail back to the users at clusterlabs.org mailing list.
> >
> >On 9/25/24 10:26, 毕晓妍 wrote:
> >>
> >>
> >> The version of pcs is 0.10.8, and resources are added by batch calling 
> >> the pcs command through a script. First, each resource is created 
> >> using pcs resource create, and then pcs resource group add is executed 
> >> to create the group. The resources in the group include LVM, 
> >> Filesystem，IPaddr，pgsql。 The first 100+groups were added normally 
> >> through this method, but there were occasional exceptions where 
> >> resources could not be found. Is there a limit to the number of 
> >> resources added? Could it be that the large scale of XML has caused 
> >> this problem?
> >>
> >
> >There is no limit on the number of resources added as Ken already wrote
> >earlier in the thread.
> >
> >Are you getting the error message 'unable to find a
> >resource/clone/group' from the 'pcs resource group add' or different 
> >command?
> >
> >Could you provide a snippet with executed commands and their output?
> >>
> >>
> >> 在 2024-09-25 01:56:39，"Miroslav Lisik" <mlisik at redhat.com> 写道：
> >> >Hello,
> >> >On 9/24/24 09:34, 毕晓妍 wrote:
> >> >> 你好：
> >> >> 我想请问一下pacemaker集群中添加的资源有数量上限吗？我在4节点集群中添加资源， 
> >> >> 一组5个资源， 
> >> >> 添加104组资源时，使用pcs命令添加没有任何报错，但是对组资源进行操作时显示unable 
> >> >> to find a resource/clone/group。请问是什么原因导致的这一现象？
> >> >>
> >> >> Hello,
> >> >>
> >> >> I would like to inquire about the potential limit on the quantity of 
> >> >> resources that can be added to a pacemaker cluster. Specifically, I've 
> >> >> been working with a 4-node cluster configuration, initially adding a 
> >> >> single group comprising 5 resources. However, upon attempting to 
> >> >> augment the cluster by adding 104 additional resource groups using the 
> >> >> |pcs| command, I encountered an unexpected behavior: while the command 
> >> >> execution itself did not report any errors, subsequent operations 
> >> >> targeting those groups resulted in a message stating 'unable to find a 
> >> >> resource/clone/group'.
> >> >>
> >> >This error from pcs means, that the resource id used with a pcs command
> >> >was not found in the CIB.
> >> >
> >> >Either a resource was not created or a resource id was mistyped in a pcs
> >> >command.
> >> >
> >> >The `pcs resource create` should error in case resource cannot be
> >> >created.
> >> >
> >> >How do you run pcs commands? Manually or by some script? Could you
> >> >provide more information like:
> >> >* version of pcs
> >> >* example of pcs commands used
> >> >* cluster configuration (CIB, output of pcs config...)
> >> >>
> >> >> Could you please shed some light on what might have caused this 
> >> >> phenomenon and whether there exists a known limitation with respect to 
> >> >> the total number of resources or resource groups that can be 
> >> >> effectively managed within a pacemaker cluster of this size?
> >> >>
> >> >> Looking forward to your reply.
> >> >>
> >> >>
> >> >> _______________________________________________
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> >> >>
> >> >> ClusterLabs home: https://www.clusterlabs.org/
> >> >Regards,
> >> >Miroslav