[kwlug-disc] Add swap space while a centos server is live.

Colin K colin at void11.com
Sun Nov 13 20:34:17 EST 2011


You are entirely right about OpenVZ I'm getting no love from the hosts and
I really wish that they would advertise that this is the methods that they
employ a bit more clearly but I guess you get what you get when you're in a
pinch like we were when we went with this host.

On Wed, Nov 2, 2011 at 2:01 PM, Steven Stillaway <steve at stillaway.net>wrote:

> **
> With OpenVZ, you are not going to be able to add RAM and I am pretty sure
> (99%) you are not going to be able to add SWAP.
>
> In an OpenVZ VPS your kernel is shared, but all of your individual apps
> are isolated into it's own space and filesystem.  You can control your
> apps, but do make any kind of modifications to the kernel that needs to be
> done on the master.  So even if you create a swapfile, it will not be added
> into the shared kernel and used at all.
>
> You can check out this:
> http://wiki.openvz.org/UBC_systemwide_configuration but it is kind of
> complex.
>
> They have assigned 4GB of RAM that is dedicated for our use only.  The 4GB
> of burstable RAM is shared by all the VPS on the system and allocated on an
> as required basis. Which means you can use it, but if other people want to
> use it as well, it will get shared back and forth.
>
> Basically if you need lots of RAM (more then 4G in this case) and are
> really going to use it a VPS is probably not the way to go.
>
> By all means though.  Turn off everything that you don't need to free up
> more of your 4GB for your use.
>
> - Steven
>
>
> On 02/11/11 4:18 AM, Colin K wrote:
>
> I have a feeling that this host may bank on the fact that we may never
> properly use all of our resources kindof like a Gmail 7gigs thing Most
> people never use it thats why we can offer it.  Sort of thing.
>
>  But were a top20 server for minecraft on some of the minecraft server
> lists we get some pretty heavy loyal and regular traffic.
>
> On Wed, Nov 2, 2011 at 4:16 AM, Colin K <colin at void11.com> wrote:
>
>> I'm not quite sure their company is @ http://redstonehost.com they have
>> a rough in description of their VPS's that they provide.
>>
>>  The main needs for a minecraft server is high availability of ram, and
>> a decent internet connection.  Basically it seems that the java minecraft
>> is based on requires alot of iops from the disks for sending "Chunk" data
>> (sections of the world) to the clients.
>>
>>
>> On Sun, Oct 30, 2011 at 9:35 AM, Raul Suarez <rarsa at yahoo.com> wrote:
>>
>>>  It is possible to resize a partition with a system up but only if you
>>> can unmount that partition. Not if it is your primary partition.
>>>
>>>  From the command line you can use parted, or from a graphical
>>> environment gparted or qtparted.
>>>
>>>  Based on the answer from your provider. Why do you need to add the
>>> swap space and why they don't like it?
>>>
>>> Raul Suarez
>>>
>>>  Technology consultant
>>> Software, Hardware and Practices
>>> _________________
>>> Twitter: rarsamx
>>> http://rarsa.blogspot.com/
>>> An eclectic collection of random thoughts
>>>  ------------------------------
>>> *From:* Colin K <colin at void11.com>
>>> *To:* KWLug Discussion <kwlug-disc at kwlug.org>
>>> *Sent:* Saturday, October 29, 2011 6:42:16 PM
>>> *Subject:* [kwlug-disc] Add swap space while a centos server is live.
>>>
>>> Is it at all possible to resize a partition in centos and add a swap and
>>> enable it while a server is online.
>>> if so what would commands of such an action look like?
>>>
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>>>
>>>
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>>
>
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