Cluster Node

C

CSUMPI

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WE have Apple Xserve Cluster with 40 node
At present we have 2 NIC on master (one to outside and one to inside)
Each node has one NIC
We want to add another NIC on master each nodes
We already have installed a NIC on master and each node (externally)

But we can not ping the nodes on second network
does any one has solutions
 
How do you have the NIC's connect externally?

EDIT: And can you please type out your explanations full - instead of "WE have Apple Xserve Cluster with 40 node" - type We have an Apple Xserve Cluster with 40 nodes. At the present time we have 2 NIC's on the master (I'm guessing Master Node) - one to the outside and one to the inside. Cause it took me a minute to realize what you were asking.

Thanks, I'm not being mean or that, just trying to get you some better help with this problem.
 
Just to interject, it's possible this person's first language is not english, so you have to bear with CSUMPI. Not uncommon to have non-English speakers posting in English for us English speakers to understand so that we might be able to help. :)

Personally, I wouldn't know about this issue since I haven't ever done this, but I'm curious to find out. :)
 
That's true, what am I thinking. Well, could you better explain how things are setup on the server - NIC card wise. Sorry.

AHHH EDIT: Connection wise, any routers, hubs, etc. How are the NIC Cards set in, are they in Ports like PCI-X (not to be confused with PCI-Express which doesn't exist on a mac) or are they connecting via oh whats it called... 1 sec... USB, Firewire or what? This will greatly help to better figure out the problem - also what OS is on the Server

EDIT2: I've never seen or used a cluster system for real, but I've been able to figure out lots of problems like these and its probably just some stupid simple thing that is so common to miss like forgetting to set it up in the OS or that. And I can garuntee that 99.99% of the people on Mac Help Forums have missed these stupid tiny simple things. *Raises hand*
 
Sorry folks
Sometimes you are so involved in a problem you see it from your prespective and fail to explain it correctly
Ok here is scenario
Xserve has 2 internal gigabit NIC
Master node (slikrock ) has two PCI slots
Nodes (40 of them) dont have any PCI slots
Master node uses the 2 internal gigabit to
1) connect to outside world(internet)
2) An internal subnet is made of 172.20.1.1xx with 172.20.1.100 as master node
Upto now everything works fine
We added a NIc to PCI slot on master node to create another internal subnet of 172.30.1.xx
But the problem is we can ping or ssh into 172.30.1.100 ( master node)
We can not ping into nodes on 172.30.1.1xx subnet
Firewall service is disabled
the 172.20.1.1xx subnet is working correctly
Also all lights and connections are ok.
So any reason why
 
Thank you so much, that helps a lot. Ok, sounds to me like you need to change your subnet mask. What is your current subnet mask? For that many ID's you'd need to have a subnet mask of at least 255.240.0.0 That is what sounds like the problem very well could be. Then you have a range of 170.16.0.1 to 170.31.255.254

Sorry internet crashed, didn't know it posted this one, this is the correct one (or the one below it)
 
Thank you so much, that helps a lot. Ok, sounds to me like you need to change your subnet mask. What is your current subnet mask? For that many ID's you'd need to have a subnet mask of at least 255.240.0.0 That is what sounds like the problem very well could be. Then you have a range of 170.16.0.1 to 170.31.255.254
 
WEll
the subnet mask we have for nic on en2 is 255.255.255.0
here is the ouput of ifconfig on en2(NIC on PCI slot)

en2: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet6 fe80::203:93ff:fef4:f654 prefixlen 64 scopeid 0x6
inet 172.30.1.100 netmask 0xffffff00 broadcast 172.30.1.255
ether 00:03:93:f4:f6:54
media: autoselect (1000baseTX <full-duplex,flow-control>) status: active
supported media: none autoselect 10baseT/UTP <half-duplex> 10baseT/UTP <full-duplex> 10baseT/UTP <full-duplex,flow-control> 100baseTX <half-duplex> 100baseTX <full-duplex> 100baseTX <full-duplex,flow-control> 1000baseTX <full-duplex> 1000baseTX <full-duplex,flow-control> 1000baseTX <full-duplex,hw-loopback>

So i guess this is not a problem
 
Try changing the subnet to 255.240.0.0
Let me explain what the problem is, since you have a subnet mask of 255.255.255.0 you can only address 172.30.1.1 to 254 you're not able to address 172.20.1.xxx, with 255.240.0.0 you would be able to address the 172.20.1.1 to 254 (the 20 and 30 I may have switched backwards, I forgot which one does and doesn't work), so that's all you need to do. Just change the subnet for the card.

Actually the total range would be 172.16.1.xxx to 172.31.1.xxx
 
ok we did that no change
But now i think i know problem
We logged into one of nodes using 20 subnet
We did ifconfig and heree is what we have

lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
inet6 ::1 prefixlen 128
inet6 fe80::1 prefixlen 64 scopeid 0x1
inet 127.0.0.1 netmask 0xff000000
gif0: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
stf0: flags=0<> mtu 1280
en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet6 fe80::20d:93ff:fe9c:af18 prefixlen 64 scopeid 0x4
inet 172.20.1.130 netmask 0xffffff00 broadcast 172.20.1.255
ether 00:0d:93:9c:af:18
media: autoselect (1000baseTX <full-duplex,flow-control>) status: active
supported media: none autoselect 10baseT/UTP <half-duplex> 10baseT/UTP <full-duplex> 10baseT/UTP <full-duplex,flow-control> 100baseTX <half-duplex> 100baseTX <full-duplex> 100baseTX <full-duplex,flow-control> 1000baseTX <full-duplex> 1000baseTX <full-duplex,flow-control> 1000baseTX <full-duplex,hw-loopback>
en1: flags=8822<BROADCAST,SMART,SIMPLEX,MULTICAST> mtu 1500
ether 00:0d:93:9c:af:19
media: autoselect (<unknown type>)
supported media: none autoselect 10baseT/UTP <half-duplex> 10baseT/UTP <full-duplex> 10baseT/UTP <full-duplex,flow-control> 100baseTX <half-duplex> 100baseTX <full-duplex> 100baseTX <full-duplex,flow-control> 1000baseTX <full-duplex> 1000baseTX <full-duplex,flow-control> 1000baseTX <full-duplex,hw-loopback>
fw0: flags=8822<BROADCAST,SMART,SIMPLEX,MULTICAST> mtu 4078
lladdr 00:0d:93:ff:fe:b1:55:64
media: autoselect <full-duplex> status: inactive
supported media: autoselect <full-duplex>

As you can see the nic en1 is not configured (it shows inactive)
How do i configure it or make it active
thanks
 
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