[gpfsug-discuss] Adding client nodes using a shared NFS root image.

david_johnson at brown.edu david_johnson at brown.edu
Fri Jan 29 19:52:04 GMT 2021


We use mmsdrrestore after the node boots. In our case these are diskless nodes provisioned by xCAT.  The post install script takes care of ensuring infiniband is lit up, and does the mmsdrrestore followed by mmstartup. 

  -- ddj
Dave Johnson

> On Jan 29, 2021, at 2:47 PM, Ruffner, Scott (jpr9c) <jpr9c at virginia.edu> wrote:
> 
> 
> Hi everyone,
>  
> We want all of our compute nodes (bare metal) to directly participate in the cluster as client nodes; of course, they are sharing a common root image.
>  
> Adding nodes via the regular mmaddnode (with the dsh operation to replicate files to the clients) isn’t really viable, but if I short-circuit that, and simply generate the /var/mmfs/gen files and then manually copy those and the keyfiles to the shared root images, is that safe?
>  
> Am I going about this the entirely wrong way?
>  
> -- 
> Scott Ruffner
> Senior HPC Engineer
> UVa Research Computing
> (434)924-6778(o)
> (434)295-0250(h)
> sruffner at virginia.edu
>  
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