Hugo Monteiro wrote:
> Hi Mario,
>
> I might have overlooked unattended-gui, so it might do just that. I'll
> elaborate a bit now.
>
> All workstations are prepared to always boot from PXE, having as second
> boot device the local hard disk.
> The default PXE boot presents a small menu with two choices, normal boot
> (local hard disk) and maintenance boot (network boot).
>
> # cat /tftpboot/pxelinux.cfg/default
>
> DEFAULT menu.c32
> PROMPT 0
> NOESCAPE 1
> ALLOWOPTIONS 0
> MENU TITLE Boot Options
> TIMEOUT 40
> ONTIMEOUT chain.c32 hd0 1
>
> LABEL local
> MENU LABEL ^Proceed normal boot
> LOCALBOOT 0
>
> LABEL install
> MENU LABEL ^Maintenance
> MENU PASSWD $4$o29hIUr3S$zajgflJvXUL2o94IQeJblILmCMUA$
> KERNEL bzImage
> APPEND initrd=initrd z_user=Administrator z_pass=secretpass
> z_path=//myserver.mydomain.com/install
>
>
>
> Ok, now besides that file, i also have another boot file
>
> # cat /tftpboot/pxelinux.cfg/force-reinstall
>
> default unattended
>
> label unattended
> KERNEL bzImage
> # Add options (z_user=..., z_path=..., etc.) to this line.
> APPEND initrd=initrd z_user=Administrator z_pass=secretpass
> z_path=//myserver.mydomain.com/install
>
>
>
> I have also made two small scripts that will basically create/remove a
> symblink to each of these pxe configuration files.
>
> # cat /usr/local/bin/reinstall.sh
> #!/bin/bash
>
> # In case the share/boot server is in the same network as the
> workstations, you can grab the MAC_ADDR directly
> #ARP_ADDR=`arp -n | grep "$IP_ADDR " | awk '{print tolower($3)}' | sed
> 's/:/-/g'`
>
> # In the case the share/boot server is also your dhcp server (ISC DHCP),
> and have fixed ips, you can grab the MAC_ADDR from there
> #MAC_ADDR=`grep -i $1 /etc/dhcp3/dhcpd.conf | grep "#" | awk '{print
> tolower($3)}' | sed 's/:/-/g'`
>
> # In the case this machine is just a file/boot server, in a different
> network. We can try grabbing from unattended MAC declarations
> MAC_ADDR=`grep -i $1
> /home/samba/unattended-4.6/install/site/unattend.csv | head -n 1 | awk
> -F '"' '{print $2}' | sed -r
> 's...@^(.{2})(.{2})(.{2})(.{2})(.{2})@\1-\2-\3-\4-...@g' | awk '{print
> tolower($_)}'`
>
> if [ -n "$MAC_ADDR" ]; then
> ln -s /tftpboot/pxelinux.cfg/force-reinstall
> /tftpboot/pxelinux.cfg/01-"$MAC_ADDR"
> fi
> # If you have winexe, you can reboot this same second
> #winexe -U MYDOMAIN/Administrator%secretpass //$1 'cmd shutdown -r -t 01'
>
>
>
> Then, to be able to remove the symblink
>
> cat /usr/local/bin/remove-tftp-file.sh
> #!/bin/bash
>
> # If the share/boot server is in the same network as the workstations,
> you can grab the MAC_ADDR directly
> #ARP_ADDR=`arp -n | grep "$1 " | awk '{print tolower($3)}' | sed 's/:/-/g'`
>
> IP_ADDR=`echo $1 | sed 's...@.*_@@'`
> MACHINE_NAME=`host $IP_ADDR|sed -r 's@(.* )(\w*)(.*)@\2@'`
>
> ARP_ADDR=`grep -i $MACHINE_NAME
> /home/samba/unattended-4.6/install/site/unattend.csv | head -n 1 | awk
> -F '"' '{print $2}' | sed -r
> 's...@^(.{2})(.{2})(.{2})(.{2})(.{2})@\1-\2-\3-\4-...@g' | awk '{print
> tolower($_)}'`
>
>
> if [ -n "$ARP_ADDR" ]; then
> BOOT_FILE=/tftpboot/pxelinux.cfg/01-"$ARP_ADDR"
> rm -f $BOOT_FILE
> fi
>
>
>
>
>
>
> Ok .. so now i just plugged this into samba.
>
>
> [Install]
> comment = Unattended Install
> path = /home/samba/unattended-4.6/install
> browseable = no
> writeable = no
> public = no
> root preexec = /usr/local/bin/remove-tftp-file.sh %m
>
>
>
>
> Now, to reinstall a machine, remotelly i just need to run reinstall.sh
> and that workstation will be marked for reinstall. The next boot the
> machine does (which can be forced using winexe for instance -
> http://eol.ovh.org/winexe/), it will enter the second pxe configuration
> and start the install process. When the machine starts installing, by
> accessing the "install" share, the symblink is removed from the pxelinux
> directory, avoiding the endless boot/install process.
>
> Although this is working jusr fine, feel free to guide to a simpler way
> of doing this.
>
> Regards,
>
> Hugo Monteiro.
>
>
Fellow developers,
Any chance that something similar to this would be incorporated into a
future release?
Best regards,
Hugo Monteiro.
--
ci.fct.unl.pt:~# cat .signature
Hugo Monteiro
Email : hugo.monte...@fct.unl.pt
Telefone : +351 212948300 Ext.15307
Web : http://hmonteiro.net
Centro de Informática
Faculdade de Ciências e Tecnologia da
Universidade Nova de Lisboa
Quinta da Torre 2829-516 Caparica Portugal
Telefone: +351 212948596 Fax: +351 212948548
www.ci.fct.unl.pt ap...@fct.unl.pt
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