biolocal:Diskless
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| Revision as of 17:37, 27 February 2009 (edit) Gianluca (Talk | contribs) ← Previous diff |
Revision as of 17:41, 27 February 2009 (edit) (undo) Gianluca (Talk | contribs) Next diff → |
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| The /tftpboot/centos5sge/centos5sge should contain the kernel and the initrd image of the diskless os to run. | The /tftpboot/centos5sge/centos5sge should contain the kernel and the initrd image of the diskless os to run. | ||
| - | + | ||
| + | |||
| + | ** pxe | ||
| + | Configure the xml pxeos file describing the new os; write in /tftpboot/linux-install/pxelinux.cfg/pxeos.xml and in /tftpboot/centos5sge/pxelinux.cfg/pxeos.xml the tags: | ||
| <pre> | <pre> | ||
| <?xml version="1.0" ?> | <?xml version="1.0" ?> | ||
| Line 86: | Line 89: | ||
| </pre> | </pre> | ||
| - | + | Now, build the diskless directories, mounting the volumes from the nfs server | |
| - | + | ||
| config_newos.sh centos5grid 192.168.151.125 | config_newos.sh centos5grid 192.168.151.125 | ||
| + | |||
| + | Finally, write the list of files to be included into the snapshot folders: | ||
| + | /diskless/i386/centos5sge/snapshot/files | ||
| + | /diskless/i386/centos5sge/snapshot/files.custom | ||
Revision as of 17:41, 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:
/dev/emcpowerk for os roots /dev/emcpowerl for snapshots
Create filesystems:
mkdir -t ext3 /dev/emcpowerk{partition_number} mkdir -t ext3 /dev/emcpowerl{partition_number}
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
Create a new directory in /tftpboot/ and build the structure for the current diskless os:
mkdir /tftpboot/centos5sge mkdir /tftpboot/centos5sge/centos5sge cp -aR /tftpboot/linux-install/pxelinux.0 /tftpboot/linux-install/pxelinux.cfg /tftpboot/linux-install/msgs /tftpboot/centos5sge/
The /tftpboot/centos5sge/centos5sge should contain the kernel and the initrd image of the diskless os to run.
- pxe
Configure the xml pxeos file describing the new os; write in /tftpboot/linux-install/pxelinux.cfg/pxeos.xml and in /tftpboot/centos5sge/pxelinux.cfg/pxeos.xml the tags:
<?xml version="1.0" ?> <OperatingSystems> <OS Anonymous="1" Description="CentOS5 for SGE cluster Nodes" Diskless="1" Kernel="2.6.18-92.1.18.el5" Kickstart="" Location="/diskless/i386/centos5sge" Name="centos5sge" Password="" Protocol="NFS" Server="192.168.151.125" User=""/> </OperatingSystems>
Now, build the diskless directories, mounting the volumes from the nfs server config_newos.sh centos5grid 192.168.151.125
Finally, write the list of files to be included into the snapshot folders: /diskless/i386/centos5sge/snapshot/files /diskless/i386/centos5sge/snapshot/files.custom
