?????? run Cassandra on physical machine

2017-12-07 Thread Peng Xiao
Thanks All.




--  --
??: "Jeff Jirsa";<jji...@gmail.com>;
: 2017??12??8??(??) 3:19
??: "cassandra"<user@cassandra.apache.org>;

????: Re: run Cassandra on physical machine



Which is to say, right now you can't run them on different ports, but you can 
run them on different IPs on the same machine (and different IPs dont need 
different physical NICs, you can bind multiple IPs to a given physical NIC).


On Thu, Dec 7, 2017 at 10:54 AM, Dikang Gu <dikan...@gmail.com> wrote:
@Peng, how many network interfaces do you have on your machine? If you just 
have one NIC, you probably need to wait this storage port patch. 
https://issues.apache.org/jira/browse/CASSANDRA-7544 .

On Thu, Dec 7, 2017 at 7:01 AM, Oliver Ruebenacker <cur...@gmail.com> wrote:


 Hello,


  Yes, you can.


 Best, Oliver


On Thu, Dec 7, 2017 at 7:12 AM, Peng Xiao <2535...@qq.com> wrote:
Dear All,


Can we run Cassandra on physical machine directly?
we all know that vm can reduce the performance.For instance,we have a machine 
with 56 core,8 ssd disks.
Can we run 8 cassandra instance in the same machine within one rack with 
different port?


Could anyone please advise?


Thanks,
Peng Xiao






-- 
Oliver Ruebenacker

Senior Software Engineer, Diabetes Portal, Broad Institute










 
 






-- 
Dikang

Re: run Cassandra on physical machine

2017-12-07 Thread Jeff Jirsa
Which is to say, right now you can't run them on different ports, but you
can run them on different IPs on the same machine (and different IPs dont
need different physical NICs, you can bind multiple IPs to a given physical
NIC).


On Thu, Dec 7, 2017 at 10:54 AM, Dikang Gu <dikan...@gmail.com> wrote:

> @Peng, how many network interfaces do you have on your machine? If you
> just have one NIC, you probably need to wait this storage port patch.
> https://issues.apache.org/jira/browse/CASSANDRA-7544 .
>
> On Thu, Dec 7, 2017 at 7:01 AM, Oliver Ruebenacker <cur...@gmail.com>
> wrote:
>
>>
>>  Hello,
>>
>>   Yes, you can.
>>
>>  Best, Oliver
>>
>> On Thu, Dec 7, 2017 at 7:12 AM, Peng Xiao <2535...@qq.com> wrote:
>>
>>> Dear All,
>>>
>>> Can we run Cassandra on physical machine directly?
>>> we all know that vm can reduce the performance.For instance,we have a
>>> machine with 56 core,8 ssd disks.
>>> Can we run 8 cassandra instance in the same machine within one rack with
>>> different port?
>>>
>>> Could anyone please advise?
>>>
>>> Thanks,
>>> Peng Xiao
>>>
>>
>>
>>
>> --
>> Oliver Ruebenacker
>> Senior Software Engineer, Diabetes Portal
>> <http://www.type2diabetesgenetics.org/>, Broad Institute
>> <http://www.broadinstitute.org/>
>>
>>
>
>
> --
> Dikang
>
>


Re: run Cassandra on physical machine

2017-12-07 Thread Dikang Gu
@Peng, how many network interfaces do you have on your machine? If you just
have one NIC, you probably need to wait this storage port patch.
https://issues.apache.org/jira/browse/CASSANDRA-7544 .

On Thu, Dec 7, 2017 at 7:01 AM, Oliver Ruebenacker <cur...@gmail.com> wrote:

>
>  Hello,
>
>   Yes, you can.
>
>  Best, Oliver
>
> On Thu, Dec 7, 2017 at 7:12 AM, Peng Xiao <2535...@qq.com> wrote:
>
>> Dear All,
>>
>> Can we run Cassandra on physical machine directly?
>> we all know that vm can reduce the performance.For instance,we have a
>> machine with 56 core,8 ssd disks.
>> Can we run 8 cassandra instance in the same machine within one rack with
>> different port?
>>
>> Could anyone please advise?
>>
>> Thanks,
>> Peng Xiao
>>
>
>
>
> --
> Oliver Ruebenacker
> Senior Software Engineer, Diabetes Portal
> <http://www.type2diabetesgenetics.org/>, Broad Institute
> <http://www.broadinstitute.org/>
>
>


-- 
Dikang


Re: run Cassandra on physical machine

2017-12-07 Thread Oliver Ruebenacker
 Hello,

  Yes, you can.

 Best, Oliver

On Thu, Dec 7, 2017 at 7:12 AM, Peng Xiao <2535...@qq.com> wrote:

> Dear All,
>
> Can we run Cassandra on physical machine directly?
> we all know that vm can reduce the performance.For instance,we have a
> machine with 56 core,8 ssd disks.
> Can we run 8 cassandra instance in the same machine within one rack with
> different port?
>
> Could anyone please advise?
>
> Thanks,
> Peng Xiao
>



-- 
Oliver Ruebenacker
Senior Software Engineer, Diabetes Portal
<http://www.type2diabetesgenetics.org/>, Broad Institute
<http://www.broadinstitute.org/>


Re: run Cassandra on physical machine

2017-12-07 Thread Eric Evans
On Thu, Dec 7, 2017 at 6:12 AM, Peng Xiao <2535...@qq.com> wrote:
> Dear All,
>
> Can we run Cassandra on physical machine directly?
> we all know that vm can reduce the performance.For instance,we have a
> machine with 56 core,8 ssd disks.
> Can we run 8 cassandra instance in the same machine within one rack with
> different port?
>
> Could anyone please advise?

We do this.  It works, but it is not pretty.

Honestly, I would gladly accept the (relatively small) overhead of a
virtual machine (or better yet, use containers), than do this.

-- 
Eric Evans
eev...@wikimedia.org

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run Cassandra on physical machine

2017-12-07 Thread Peng Xiao
Dear All,


Can we run Cassandra on physical machine directly?
we all know that vm can reduce the performance.For instance,we have a machine 
with 56 core,8 ssd disks.
Can we run 8 cassandra instance in the same machine within one rack with 
different port?


Could anyone please advise?


Thanks,
Peng Xiao