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Clarifications on Homework 12 #6

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Update README.md
mstackhouse Mar 23, 2019
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mstackhouse Mar 23, 2019
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mstackhouse Mar 23, 2019
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12 changes: 10 additions & 2 deletions week12/hw/README.md
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Expand Up @@ -11,9 +11,11 @@ A. __Get three virtual servers provisioned__, 2 vCPUs, 4G RAM, UBUNTU\_16\_64, _

B. __Set up each one of your nodes as follows:__

Add to /root/.bash\_profile the following line in the end:
Add to /root/.profile the following line in the end:

export PATH=$PATH:/usr/lpp/mmfs/bin

Then execute the command `source ~/.profile` to commit the extra path to your `$PATH` variable.

Make sure the nodes can talk to each other without a password. When you created the VMs, you specified a keypair. Copy it to /root/.ssh/id\_rsa (copy paste or scp works). Set its permissions:

Expand Down Expand Up @@ -84,6 +86,12 @@ You could get more details on your cluster:

mmlscluster

If a node doesn't appear for some reason (for example, if there was a connection issue when the cluster was initially created), you can manually the node in with the command `mmaddnode`:

mmaddnode -N gpfs3

Where `gpfs3` is the name of the missing node.

Now we need to define our disks. Do this to print the paths and sizes of disks on your machine:

fdisk -l
Expand All @@ -100,7 +108,7 @@ Now inspect the mount location of the root filesystem on your boxes:
[root@gpfs1 ras]# mount | grep ' \/ '
/dev/xvda2 on / type ext3 (rw,noatime)

Disk /dev/xvda (partition 2) is where my operating system is installed, so I'm going to leave it alone. In my case, __xvdc__ is my 100 disk. In your case, it could be /dev/xvdb, so __please be careful here__. Assuming your second disk is `/dev/xvdc` then add these lines to `/root/diskfile.fpo`:
Disk /dev/xvda (partition 2) is where my operating system is installed, so I'm going to leave it alone. In my case, __xvdc__ is my 100 disk. In your case, it could be /dev/xvdb, so __please be careful here__. Assuming your second disk is `/dev/xvdc` then add these lines to `/root/diskfile.fpo` on gpfs1:

%pool:
pool=system
Expand Down