Re: No buffer space available

On 03/28/2011 03:43 PM, Carsten Aulbert wrote:
> Hi
>
> On Monday 28 March 2011 15:36:32 Mahmoud Mubarak wrote:
>> I'm using Ubuntu 10.10, kernel 2.6.35-27-server. Our network has over 1
>> Thousand nodes. When I tried to ssh to ~800 nodes, I got this error
>> message "No buffer space available" after executing ssh to ~600 nodes of
>> 800. I'm just executing hostname command on each machine. How can I
>> handle this issue?
> You might run into an issue with forking here (ulimits might help) or TCP
> problems.
>
> I suggest you use something like dsh et al. to manage large numbers of ssh
> connections, e.g. dsh -aMF50 will run ssh with 50 hosts in parallel and will
> still go through the large "default" list.
>
> Does this help?
>
> Cheers
>
> Carsten

Thanks, Carsten.

well, Sorry for bad explain. I can elaborate: I had 20 groups with 40 
nodes per group. I typed:

for i in group{01..40};do dsh -cg $i hostname>/dev/null;done


Then this error message appeared after group15. Any ideas about solving 
this issue?

-- 
Mahmoud A. Mubarak
Bibliotheca Alexandrina


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