Migrate nodes from the old cluster to the new cluster

[nariai]

Paul,

As you can see, our current bottleneck is the number of nodes in the new cluster system, and hence we want to move a part of nodes in the old cluster to the new cluster as soon as possible (maybe eight nodes out of 16 nodes, as the first step).

Can you tell us what need to be done before migrating nodes?

Naoki

[tatarsky]

Sounds good! I am on station with hopefully windows open to speed the attempt.

[tatarsky]

I saw it try...

[hirokomatsui]

Setting looks good. We need some other file?

[tatarsky]

Try again. There may have been tcpwrappers in the way.

[tatarsky]

Got further that time...it asked for /tftpboot/pxelinux.cfg/0A000002 which is the next boot file...checking

[tatarsky]

If it has a menu on the screen, choose the second one...

[hirokomatsui]

got it! but isn't it CentOS 6.6?

[tatarsky]

Oh, yeah, thats just a typo from my menu

[hirokomatsui]

ok, I'll run the CentOS then.

[tatarsky]

I stand corrected. I am showing I am attempting 6.7.

[tatarsky]

Lets proceed to see if the install works.

[tatarsky]

I may downgrade it once we get the mechanics done.

[tatarsky]

I see the install in process

[tatarsky]

If it asks a question it means I don't have the kickstart file right

[tatarsky]

I am attached to the console. (VNC is activated once we get this far).

[hirokomatsui]

not moving from this message for some minuts

[tatarsky]

Yep. I am on the console. It is loading the software.

[tatarsky]

You cannot see it but I can.

[hirokomatsui]

Cool!

[tatarsky]

I am working on downgrade to 6.6 for the next test.

[tatarsky]

Yep!

[tatarsky]

Its almost done with the software. I want to make sure it reboots and comes back up but then I think it would be wise to use 6.6. I forgot that part.

[hirokomatsui]

I think so, because all the other nodes are 6.6

[tatarsky]

yeah, I forgot that actually.

[tatarsky]

Should be fairly quick.

[tatarsky]

I believe the system is about to reboot.

[hirokomatsui]

Yap, I see that.

[tatarsky]

Once I can get to it give me about 20 mins to change from 6.7 to 6.6 and we'll try again.

[tatarsky]

Oh, and stop it from booting PXE again.

[tatarsky]

Or choose "local disk"

[hirokomatsui]

6.7 is start running.

[tatarsky]

ok. am going to check it came out ok

[tatarsky]

On the machine...so I am now downgrading and we can do it again. But that went pretty well I feel!

[hirokomatsui]

I agree, saw 6.7 started and root password has been set correctly.

[tatarsky]

Generating repo for 6.6...

[tatarsky]

OK, try a PXE again on cn2

[hirokomatsui]

OK

[tatarsky]

I did that pretty quick but I hope I did it correctly.

[tatarsky]

Menu should say 6.6

[hirokomatsui]

installing

[tatarsky]

I am connected to VNC. It is mkfs.ing scratch

[tatarsky]

I believe we will know in a moment and then we can go down the line. I can actually control if the unit boots locally without the menu and leaving them in PXE....

[tatarsky]

I have made the other systems config entry to be PXE ready.

[hirokomatsui]

I have to change the boot order on the bios setting menu once installing's done.

[tatarsky]

You can do that or I can actually tell PXE "don't use a menu, just boot off the local drive"

[hirokomatsui]

Probably it's better that I change, then the nodes won't have to go PXE every time booting.

[tatarsky]

Fair enough!

[tatarsky]

Loading software.

[tatarsky]

rebooting.

[hirokomatsui]

You've changed the PXE setting as booting from HDD.