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understand from regatta environment.

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  #1 (permalink)  
Old 01-04-2008, 10:38 PM
yls177
 
Posts: n/a
Default understand from regatta environment.

i could have a physical box which could contain different virtual box
with different ip address and hostnames. in addition, i can have the
ability to have clustering enabled so that its high available also
known as hacmp. finally, there is a control workstation which controls
all these virtual boxes.

so far am i right?

one last note... in a given hostname, i have a ip address. now, i also
noticed that i could identify these different boxes through " a name "
that i think its identified by the control workstation. and further
analysis shows that they could be network interfaces. that is to say
that i could direct the kind of transfer rate (example, rcp) by
specifying the name/ip that is found in ifconfig -a.

am i right?

thanks
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  #2 (permalink)  
Old 01-04-2008, 10:38 PM
Steve Nottingham
 
Posts: n/a
Default Re: understand from regatta environment.

yls177@hotmail.com (yls177) wrote in message news:<c06e4d68.0405251951.3dfb8516@posting.google. com>...
> i could have a physical box which could contain different virtual box
> with different ip address and hostnames. in addition, i can have the
> ability to have clustering enabled so that its high available also
> known as hacmp. finally, there is a control workstation which controls
> all these virtual boxes.
>
> so far am i right?
>


I really don't think you have understood any of my previous replies on
this matter.

If you have a control workstation, then you have a SP or SP2. These
are physical boxes inside a frame controlled by the CWS. You wil have
multiple IP addresses and hostnames in each of these physical nodes.

If you have virtual boxes, with different hostnames and IP address,
then you have a system that has Power 4 processors and the HMC
(Hardware Management Console) controls this. What is the output of
"lsattr -El sys0 -a modelname"

HACMP can run on just about every model of pSeries/RS6000.

> one last note... in a given hostname, i have a ip address. now, i also
> noticed that i could identify these different boxes through " a name "
> that i think its identified by the control workstation. and further
> analysis shows that they could be network interfaces. that is to say
> that i could direct the kind of transfer rate (example, rcp) by
> specifying the name/ip that is found in ifconfig -a.
>
> am i right?
>
> thanks


ifconfig -a only shows the name of the network devices and the support
IP address. A unix system (including) AIX can only have one hostname,
although it is possible in /etc/hosts or DNS to have a hostname for
each network interface. e.g.
wibble 192.168.0.1 \
wibble01_en0 192.168.1.1 ¦== These are all network adapters on the
same machine
wibble01_en1 192.168.2.1 /

Steve
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  #3 (permalink)  
Old 01-04-2008, 10:39 PM
Edward HAYES-HALL
 
Posts: n/a
Default Re: understand from regatta environment.


"yls177" <yls177@hotmail.com> wrote in message
news:c06e4d68.0405251951.3dfb8516@posting.google.c om...
> i could have a physical box which could contain different virtual box
> with different ip address and hostnames. in addition, i can have the
> ability to have clustering enabled so that its high available also
> known as hacmp. finally, there is a control workstation which controls
> all these virtual boxes.
>
> so far am i right?
>
> one last note... in a given hostname, i have a ip address. now, i also
> noticed that i could identify these different boxes through " a name "
> that i think its identified by the control workstation. and further
> analysis shows that they could be network interfaces. that is to say
> that i could direct the kind of transfer rate (example, rcp) by
> specifying the name/ip that is found in ifconfig -a.
>
> am i right?
>
> thanks


The thread title uses the term "Regatta" so from this I assume you are
asking about
POWER4 systems - this precludes a discussion on the older SP/SP2 systems.

> i could have a physical box which could contain different virtual box
> with different ip address and hostnames.


Somewhat of a simplification, but a qualified yes. The POWER4 pSeries
systems
utilize logical partitioning and the hypervisor. There are a number of types
of partitioning
- dynamic, afinity, etc.

But simplified, logical partitioning, or LPAR, allows one to divide a
physical box into
multiple partitions, each partition is capable of having dedicated CPU,
memory and I/O
resources associated with it. Each partition is also assigned one or more
ethernet adaptors
and these have their own IP addresses and host names. From an "end user"
perspective
an individual LPAR can look like a dedicated pSeries server in its own
right. So a 32-way,
256Gb p690, with the appropriate hardware configuration, can be LPAR'ed
into - say eight
4-way, 32Gb partitions - and will appear like eight separate servers to the
user community.

Of course - the above is a POWER4/AIX 5.2 discussion - there are a whole
bunch of
interesting things that come to light with POWER5 and AIX 5.3.....

> known as hacmp. finally, there is a control workstation which controls
> all these virtual boxes.


The hypervisor is a Virtual Machine Monitor - it essentially sits between
the OS/partitions
and the hardware. The hypervisor is the mechanism by which the LPARs are
controlled.
The hypervisor is configured and manipulated via a separate entity called
the HMC --
what I think you are referring to as the "Control Workstation"

> with different ip address and hostnames. in addition, i can have the
> ability to have clustering enabled so that its high available also


Be carefully, clustering does not necessarily imply High Availability (HA)
and vice versa. Just because
you have a cluster does not mean that you have an HA solution. HA can be
implemented as
active-active, active-passive, etc. HA solutions are made up of a number of
components including
clustering (where appropriate).

IBM provides the eServer 1600 which is the name of the pSeries Clustered
solution. IMHO the
eServer equivalent to the older SP technology. The 1600 is essentially built
from pSeries servers
such as the p6M2, p690 with high speed interconnect fabric and each node in
the cluster runs a copy
of the OS. There are clustering tools that then are incorporated into the
solution.

You can build an HA environment using a cluster or alternatively, you can
build an active-passive HA
solution using two (or more) non-clustered pSeries servers.

Regards,
Edward


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  #4 (permalink)  
Old 01-04-2008, 10:39 PM
Robin Hayes-Hall
 
Posts: n/a
Default Re: understand from regatta environment.


"Steve Nottingham" <steve@wakefieldrfc.freeserve.co.uk> wrote in message
news:42862645.0405260209.218a3cf8@posting.google.c om...
> yls177@hotmail.com (yls177) wrote in message

news:<c06e4d68.0405251951.3dfb8516@posting.google. com>...
> > i could have a physical box which could contain different virtual box
> > with different ip address and hostnames. in addition, i can have the
> > ability to have clustering enabled so that its high available also
> > known as hacmp. finally, there is a control workstation which controls
> > all these virtual boxes.
> >
> > so far am i right?
> >

>
> I really don't think you have understood any of my previous replies on
> this matter.
>
> If you have a control workstation, then you have a SP or SP2. These
> are physical boxes inside a frame controlled by the CWS. You wil have
> multiple IP addresses and hostnames in each of these physical nodes.
>
> If you have virtual boxes, with different hostnames and IP address,
> then you have a system that has Power 4 processors and the HMC
> (Hardware Management Console) controls this. What is the output of
> "lsattr -El sys0 -a modelname"
>
> HACMP can run on just about every model of pSeries/RS6000.
>
> > one last note... in a given hostname, i have a ip address. now, i also
> > noticed that i could identify these different boxes through " a name "
> > that i think its identified by the control workstation. and further
> > analysis shows that they could be network interfaces. that is to say
> > that i could direct the kind of transfer rate (example, rcp) by
> > specifying the name/ip that is found in ifconfig -a.
> >
> > am i right?
> >
> > thanks

>
> ifconfig -a only shows the name of the network devices and the support
> IP address. A unix system (including) AIX can only have one hostname,
> although it is possible in /etc/hosts or DNS to have a hostname for
> each network interface. e.g.
> wibble 192.168.0.1 \
> wibble01_en0 192.168.1.1 ¦== These are all network adapters on the
> same machine
> wibble01_en1 192.168.2.1 /
>
> Steve


I do believe you can bind multiple IP addresses -- and therefore, by
inference host names -- to a NIC card - certainly in IRIX you can (it was
called "ghosting") and if I remember rightly you could do this in AIX 4 by
defining an alias on the ifconfig command;

ifconfig eth0 xxx.xxx.xxx.xxx netmask 255.255.255.xxx alias

I believe on the SP switch you could use IP aliasing to allow IP Address
Takeover (IPAT) in HA setups.

My experience of this is with IRIX not AIX -- so I may be wrong about AIX

Regards,
Edward


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  #5 (permalink)  
Old 01-04-2008, 10:39 PM
yls177
 
Posts: n/a
Default Re: understand from regatta environment.

steve@wakefieldrfc.freeserve.co.uk (Steve Nottingham) wrote in message news:<42862645.0405260209.218a3cf8@posting.google. com>...
> yls177@hotmail.com (yls177) wrote in message news:<c06e4d68.0405251951.3dfb8516@posting.google. com>...
> > i could have a physical box which could contain different virtual box
> > with different ip address and hostnames. in addition, i can have the
> > ability to have clustering enabled so that its high available also
> > known as hacmp. finally, there is a control workstation which controls
> > all these virtual boxes.
> >
> > so far am i right?
> >

>
> I really don't think you have understood any of my previous replies on
> this matter.
>
> If you have a control workstation, then you have a SP or SP2. These
> are physical boxes inside a frame controlled by the CWS. You wil have
> multiple IP addresses and hostnames in each of these physical nodes.
>
> If you have virtual boxes, with different hostnames and IP address,
> then you have a system that has Power 4 processors and the HMC
> (Hardware Management Console) controls this. What is the output of
> "lsattr -El sys0 -a modelname"
>


modelname IBM,7040-681 Machine name False

> HACMP can run on just about every model of pSeries/RS6000.
>
> > one last note... in a given hostname, i have a ip address. now, i also
> > noticed that i could identify these different boxes through " a name "
> > that i think its identified by the control workstation. and further
> > analysis shows that they could be network interfaces. that is to say
> > that i could direct the kind of transfer rate (example, rcp) by
> > specifying the name/ip that is found in ifconfig -a.
> >
> > am i right?
> >
> > thanks

>
> ifconfig -a only shows the name of the network devices and the support
> IP address. A unix system (including) AIX can only have one hostname,
> although it is possible in /etc/hosts or DNS to have a hostname for
> each network interface. e.g.
> wibble 192.168.0.1 \
> wibble01_en0 192.168.1.1 ¦== These are all network adapters on the
> same machine
> wibble01_en1 192.168.2.1 /
>
> Steve




u are right.. i get this list of ip of network cards from my hosts
file, basically, they are commented with either a GE or EN. seems like
some network terminology but seems greek to me.. any enlightenment?

so i can choose which network cards for my network traffic to transfer
through?

thanks
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  #6 (permalink)  
Old 01-04-2008, 10:40 PM
yls177
 
Posts: n/a
Default Re: understand from regatta environment.

yls177@hotmail.com (yls177) wrote in message news:<c06e4d68.0405270100.5cb03252@posting.google. com>...
> steve@wakefieldrfc.freeserve.co.uk (Steve Nottingham) wrote in message news:<42862645.0405260209.218a3cf8@posting.google. com>...
> > yls177@hotmail.com (yls177) wrote in message news:<c06e4d68.0405251951.3dfb8516@posting.google. com>...
> > > i could have a physical box which could contain different virtual box
> > > with different ip address and hostnames. in addition, i can have the
> > > ability to have clustering enabled so that its high available also
> > > known as hacmp. finally, there is a control workstation which controls
> > > all these virtual boxes.
> > >
> > > so far am i right?
> > >

> >
> > I really don't think you have understood any of my previous replies on
> > this matter.
> >
> > If you have a control workstation, then you have a SP or SP2. These
> > are physical boxes inside a frame controlled by the CWS. You wil have
> > multiple IP addresses and hostnames in each of these physical nodes.
> >
> > If you have virtual boxes, with different hostnames and IP address,
> > then you have a system that has Power 4 processors and the HMC
> > (Hardware Management Console) controls this. What is the output of
> > "lsattr -El sys0 -a modelname"
> >

>
> modelname IBM,7040-681 Machine name False
>
> > HACMP can run on just about every model of pSeries/RS6000.
> >
> > > one last note... in a given hostname, i have a ip address. now, i also
> > > noticed that i could identify these different boxes through " a name "
> > > that i think its identified by the control workstation. and further
> > > analysis shows that they could be network interfaces. that is to say
> > > that i could direct the kind of transfer rate (example, rcp) by
> > > specifying the name/ip that is found in ifconfig -a.
> > >
> > > am i right?
> > >
> > > thanks

> >
> > ifconfig -a only shows the name of the network devices and the support
> > IP address. A unix system (including) AIX can only have one hostname,
> > although it is possible in /etc/hosts or DNS to have a hostname for
> > each network interface. e.g.
> > wibble 192.168.0.1 \
> > wibble01_en0 192.168.1.1 ¦== These are all network adapters on the
> > same machine
> > wibble01_en1 192.168.2.1 /
> >
> > Steve

>
>
>
> u are right.. i get this list of ip of network cards from my hosts
> file, basically, they are commented with either a GE or EN. seems like
> some network terminology but seems greek to me.. any enlightenment?
>
> so i can choose which network cards for my network traffic to transfer
> through?
>
> thanks



also, i noticed that i can do a either telnet of
1) hostname
2) ip address/hostname of the network interface cards.
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