[ClusterLabs] Antw: [EXT] Re: mdraid - pacemaker resource agent

[Ulrich Windl]

>>> Roger Zhou via Users <users at clusterlabs.org> schrieb am 09.12.2022 um 11:26
in
Nachricht <edae1e37-f153-0afb-665b-5660709e968c at suse.com>:

> On 12/9/22 17:36, Jelen, Piotr wrote:
>> Hi Roger,
>> 
>> Thank you for your quick reply,
>> The mdraid resource agent works very well for us,
>> Can you please tell me if there is any resource agent or tool build in 
> pacemaker  for sync configuration file(s) such as /etc/exports for nfs 
> service between cluster nodes without mounting shares and creating symbolic

> link(s)  ?

I wonder (also see below Roger's response): Don't you add exportfs resources
to your NFS server? Then you don't need to sync the exports file.
primitive prm_nfs_XYZ_exp exportfs \
        params clientspec="@XYZ_hosts" directory="/exports/XYZ" fsid=...
options="rw,..."

OK, we don't sync exportfs, but use netgroups from LDAP to define host access.
That way we don't have to adjust the cluster config when new NFS clients are
added...

> 
> 
> I incline to ask you describe your use case a little bit more. Without 
> knowing
> it well, my view might be not fit you.
> 
> csync2 is often used by ClusterLabs community. But it is an individual
tool,
> and is not part of pacemaker. https://github.com/linbit/csync2 
> 
> However, you refers to /etc/exports. I guess your use case is High
Available
> NFS? If so, you could leverage `man ocf_heartbeat_exportfs`. But this 
> resource
> agent doesn't use /etc/exports at all.
> 
> 
> BR,
> Roger
> 
> 
> 
>> 
>> Thank you
>> Piotr Jelen
>> Senior Systems Platform Engineer
>> 
>> Mastercard
>> Mountain View, Central Park  | Leopard
>> 
>> 
>> -----Original Message-----
>> From: Roger Zhou <zzhou at suse.com>
>> Sent: Thursday 8 December 2022 05:56
>> To: Cluster Labs - All topics related to open-source clustering welcomed 
> <users at clusterlabs.org>; Jelen, Piotr <Piotr.Jelen at mastercard.com>
>> Cc: Nielsen, Laust <Laust.Nielsen at mastercard.com>
>> Subject: {EXTERNAL} Re: [ClusterLabs] mdraid - pacemaker resource agent
>> 
>> CAUTION: The message originated from an EXTERNAL SOURCE. Please use caution

> when opening attachments, clicking links or responding to this email.
>> 
>> 
>> 
>> On 12/7/22 18:44, Jelen, Piotr wrote:
>>> Hi ClusterLabs team ,
>>>
>>> I would like to ask if this resource agent was tested and if it can be
>>> use in production?
>>> resource-agents/mdraid at main · ClusterLabs/resource-agents · GitHub
>>> <https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_Clust 
>>> erLabs_resource-2Dagents_blob_main_heartbeat_mdraid&d=DwIDaQ&c=uc5ZRXl
>>> 8dGLM1RMQwf7xTCjRqXF0jmCF6SP0bDlmMmY&r=UzPNWvRnAChMyFZDGSUcEqtZElcu_Xn
>>> gP1GiT3HLUmI&m=OHY6Rfbo326vRgEACkHp-D4nbNFyihVuQak3w9YeTXJQ1SeBV2P-c7c
>>> GumwQuS51&s=pOg6p7HopMV1E14QJmLReC7z_2_IBPhFWTWst5YO1FA&e= >
>>>
>> 
>> Yes. Why not ;). We don't see big missing piece, though might have some 
> improvement for the certain scenario. Anyway, you could report the issue, or

> provide improvement code, if any.
>> 
>> Cheers,
>> Roger
>> 
>>>
>>> Thank you
>>>
>>> *Piotr Jelen*
>>>
>>> Senior Systems Platform Engineer
>>>
>>> Mastercard
>>>
>>> Mountain View, Central Park  | Leopard
>>>
>>>        [mastercard.com] <http://www.mastercard.com>
>>>
>>>
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