biolocal:Diskless

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Revision as of 13:00, 27 February 2009 (edit) Gianluca (Talk | contribs) ← Previous diff		Revision as of 17:23, 27 February 2009 (edit) (undo) Gianluca (Talk | contribs) Next diff →
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-
	'''Create a new diskless OS'''		'''Create a new diskless OS'''
-	*''Preparing the NFS server''	+	*''NFS server configuration''
	On 143.225.151.72 (storagesrv2) there are 2 LUNs available for diskless OSes:		On 143.225.151.72 (storagesrv2) there are 2 LUNs available for diskless OSes:
Line 33:		Line 32:
-	*''Create the OS''	+	*''OS creation''
	Rsync the installed os from an existing disk to /diskless/i386/$oslabel/root		Rsync the installed os from an existing disk to /diskless/i386/$oslabel/root
Line 48:		Line 47:
	**Create a rootfs		**Create a rootfs
	**Create the OS; the OS should be linked to the created rootfs selecting the corresponding checkbox in the new os interface.		**Create the OS; the OS should be linked to the created rootfs selecting the corresponding checkbox in the new os interface.
		+
		+
		+	*''Clustermanager setup''
		+
		+	**DHCP
		+	Edit the file /etc/dhcpd.conf and insert a new network configuration:
		+	<pre>
		+	pool {
		+	include "dhcpd.d/centos5sge/dhcpd.inc";
		+	filename "centos5sge/pxelinux.0";
		+	range 192.168.129.1 192.168.129.254;
		+	}
		+	</pre>
		+
		+	In /etc/dhcpd.d create a new directory and the include file:
		+	<pre>
		+	mkdir /etc/dhcpd.d/centos5sge
		+	touch /etc/dhcpd.d/centos5sge/dhcpd.inc
		+	</pre>
		+
		+
		+	**tftserver
		+
		+
		+	**pxe
		+	config_newos.sh centos5grid 192.168.151.125

---

Revision as of 17:23, 27 February 2009

Create a new diskless OS

• NFS server configuration

On 143.225.151.72 (storagesrv2) there are 2 LUNs available for diskless OSes:

Create filesystems:

and run the command:

/root/config_os_partitions.sh oslabel dev_for_root dev_for_snapshots ex: /root/config_os_partitions.sh centos5sge /dev/emcpowerk7 /dev/emcpowerl7

It makes the directories

/diskless/i386/$oslabel/root
/diskless/i386/$oslabel/snapshot

and mount the devices on them.

• OS creation

Rsync the installed os from an existing disk to /diskless/i386/$oslabel/root

Export the root and snapshot directories to a new network.

echo "/diskless/i386/centos5sge/root  192.168.151.43(rw,sync,no_root_squash)" >> /etc/exports
echo "/diskless/i386/centos5sge/root 192.168.129.0/24(ro,sync,no_root_squash)" >> /etc/exports
echo "/diskless/i386/centos5sge/snapshot     192.168.129.0/18(rw,sync,no_root_squash)" >> /etc/exports
exportfs -r

Register the new rootfs and the Os by using the web interface (http://mac-web.ceinge.unina.it/servers):

• • Create a rootfs
  • Create the OS; the OS should be linked to the created rootfs selecting the corresponding checkbox in the new os interface.

• Clustermanager setup

• • DHCP

Edit the file /etc/dhcpd.conf and insert a new network configuration:

                pool {
                        include "dhcpd.d/centos5sge/dhcpd.inc";
                        filename "centos5sge/pxelinux.0";
                        range 192.168.129.1 192.168.129.254;
                        }

In /etc/dhcpd.d create a new directory and the include file:

mkdir /etc/dhcpd.d/centos5sge
touch /etc/dhcpd.d/centos5sge/dhcpd.inc

• • tftserver

• • pxe

config_newos.sh centos5grid 192.168.151.125