[Rocks-Discuss] cluster implementation
moncho
I'm new on the list, currently assigned me the task of
implementing a cluster to host 40 domains, each with a web portal,
mail, wiki and blog. We will use mysql database, Postfix, etc..
Unfortunately I do not have experience in this type of system.
Will this work in Rocks?
I need that the cluster is high availability and load balancing.
At the moment we have 4 servers sun
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NiftyClusters Mitch
> Saludes,
> I'm new on the list, currently assigned me the task of
> implementing a cluster to host 40 domains, each with a web portal,
> mail, wiki and blog. We will use mysql database, Postfix, etc..
> Unfortunately I do not have experience in this type of system.
> Will this work in Rocks?
>
> I need that the cluster is high availability and load balancing.
Rocks is ideal for installing a set of hosts all identical.
How many hosts?
Forty different domains, with forty different email domains, different
user account sets, forty different data bases etc.
could prove to be a mismatch to the key design decision goals of Rocks.
You might find that rocks is good for helping you tinker. It can take less than
fifteen minutes to reload a compute host node back to the Rocks/CentOS
base line.
Then use scripts to customize each node. You can quickly test and tune your
scripts in a rapid edit, test, edit, test... cycle.
You may find that generic 'kickstart file generation' tools will give
you more flexibility and generality.
Rocks does use kickstart under the hood.
High availability and load balancing are not key features of rocks.
If host software goes bad, software is quickly reloaded....
Load balancing is commonly done at a NAT or router at the boundary of
the cluster....
Also load balancing is done in applications and application design
The Rocks cluster
view likes to funnel all access and management through a single
system. This does
not sound like your goal.
Since Rocks is free give it a one week trial on three boxes. You will
learn some things
about rocks and also see one very well implemented specific vision of
cluster management
in action.
--
NiftyCluster
T o m M i t c h e l l
Brad
availability system like
http://www.linux-ha.org/
Rocks is geared more for HPC and research applications. Start researching
how to implement a heartbeat server setup.
-Brad
Jeff Pummill
<http://xcr.cenit.latech.edu/ha-oscar/>
Rocks, well....ROCKS! in its intended area of expertise, but HA is not
part of that area.
Jeff F. Pummill
Senior Linux Cluster Administrator
University of Arkansas <http://hpc.uark.edu>
"In theory, there is no difference between theory and
practice. But in practice, there is!" /-- anonymous/
Dr. Hung-Sheng Tsao(LaoTsao)
but is does support xen so it can help U create all these domains/VM
but U will need to add all these apps yourself.
HA sometime require share storage (FC or SAS) or HA-NFS(NAS).
Oscar is one options for frontend-HA.
If U have the money one can use Vmware ESX server that support v-motions.
If U can wait Sun's xVM that based on opensolaris will be able to
support VMs
and there is opensource cluster project to support xVN server-HA in the
working
this will require shared storage, AFAIK.
--
Hung-Sheng Tsao, Ph.D. (LaoTsao) Sr. System Engineer
US, GEH East TS Ambassador
400 Atrium Dr, 1ST FLOOR P/F:1877 319 0460 (x67079)
Somerset, NJ 08873 C: 973 495 0840
http://blogs.sun.com/hstsao/ E:Hung-Sh...@sun.com
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moncho
because of centos brings a suite to implement systems clusters.
I apologize for grammar, I used a translator
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