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><SPAN
CLASS="application"
>Linux</SPAN
> on the <SPAN
CLASS="productname"
>Sun JavaStation
</SPAN
> <SPAN
CLASS="acronym"
>NC</SPAN
> HOWTO</TH
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><DIV
CLASS="sect1"
><H1
CLASS="sect1"
><A
NAME="ServerSetup-ServerSetupChapter"
>7. Set up Your Server</A
></H1
><P
> This chapter describes the configuration steps necessary for
the server machine to hand-off your <SPAN
CLASS="productname"
>JavaStation</SPAN
>
boot image.
</P
><DIV
CLASS="sect2"
><H2
CLASS="sect2"
><A
NAME="ServerSetup-ServerPrefaceSection"
>7.1. Preface</A
></H2
><P
> It is now time to setup your server to deliver the <SPAN
CLASS="acronym"
>OS</SPAN
>
and filesystem to the <SPAN
CLASS="productname"
>JavaStation</SPAN
>.
</P
><P
> In our examples here, we configure a Linux/SPARC server <SPAN
CLASS="QUOTE"
>"lnxserv
"</SPAN
> at private IP 192.168.128.100 to deliver a boot image to
<SPAN
CLASS="productname"
>JavaStation</SPAN
> <SPAN
CLASS="QUOTE"
>"java01"</SPAN
> at
private IP 192.168.128.1. Both are on private network 192.168.128/24.
When using an <SPAN
CLASS="QUOTE"
>"NFS-Root"</SPAN
> Filesystem, the location on
the server of the filesystem in our sample is at <SPAN
CLASS="QUOTE"
>"/path/to/nfsroot
"</SPAN
>.
</P
></DIV
><DIV
CLASS="sect2"
><H2
CLASS="sect2"
><A
NAME="ServerSetup-ConfigureRARPSection"
>7.2. Setting up the <SPAN
CLASS="acronym"
>RARP</SPAN
> service</A
></H2
><P
> We first need to set up <SPAN
CLASS="acronym"
>RARP</SPAN
> service on our server,
so the <SPAN
CLASS="productname"
>JavaStation</SPAN
> can auto-configure its
<SPAN
CLASS="acronym"
>IP</SPAN
>.
</P
><P
> First, populate the <SPAN
CLASS="QUOTE"
>"/etc/ethers"</SPAN
> file with the mapping of
the mac address of the <SPAN
CLASS="productname"
>JavaStation</SPAN
> to its
hostname:
</P
><TABLE
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><TD
><FONT
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><PRE
CLASS="screen"
> ### /etc/ethers
8:0:20:82:7a:21 lnxserv # 192.168.128.100 (server is not necessary,)
# # (just for completeness)
#
#
08:00:20:81:C2:ae java01 # 192.168.128.1 (JavaStation)
#
###
</PRE
></FONT
></TD
></TR
></TABLE
><P
> Next, populate the <SPAN
CLASS="QUOTE"
>"/etc/hosts"</SPAN
> file with the <SPAN
CLASS="acronym"
>IP
</SPAN
> to hostname maps:
</P
><TABLE
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><TR
><TD
><FONT
COLOR="#000000"
><PRE
CLASS="screen"
> ### /etc/hosts
192.168.128.100 lnxserv
192.168.128.1 java01
###
</PRE
></FONT
></TD
></TR
></TABLE
><P
> Lastly, configure the <SPAN
CLASS="acronym"
>RARP</SPAN
> cache to fill.
On 2.2.x based systems, you do this with the /sbin/rarp command, so
fill the cache at startup:
</P
><TABLE
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><TD
><FONT
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><PRE
CLASS="screen"
> ### Part of rc.local
#
# If necessary, first load the rarp module to be able to fill the cache.
# /sbin/insmod rarp
#
# Now we fill the rarp cache. You better have the rarp command available.
if [ -f /sbin/rarp ]; then
/sbin/rarp -f
fi
###
</PRE
></FONT
></TD
></TR
></TABLE
><P
> On 2.4.x based systems, you must use the userland RARP daemon to answer
RARP requests instead.
</P
></DIV
><DIV
CLASS="sect2"
><H2
CLASS="sect2"
><A
NAME="ServerSetup-ConfigureDHCPSection"
>7.3. Setting up the <SPAN
CLASS="acronym"
>DHCP</SPAN
> service</A
></H2
><P
> You now need to configure your server to deliver <SPAN
CLASS="acronym"
>DHCP</SPAN
>
service. This will help identify the <SPAN
CLASS="productname"
>JavaStation</SPAN
>,
the network it is on, and where to get its boot image from.
</P
><P
> The following is a sample <SPAN
CLASS="QUOTE"
>"dhcpd.conf"</SPAN
> file for the
<SPAN
CLASS="application"
>ISC DHCP server</SPAN
> software which ships
with most <SPAN
CLASS="application"
>Linux/SPARC</SPAN
> distributions.
</P
><TABLE
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><TD
><FONT
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><PRE
CLASS="screen"
> ### Sample /etc/dhcpd.conf file for ISC DHCPD
#
deny unknown-clients;
#
subnet 192.168.128.0 netmask 255.255.255.0
{
range 192.168.128.1 192.168.128.150;
}
group
{
host java01
{
hardware ethernet 08:00:20:81:C2:ae;
filename "C0A88003"; # "/tftpboot/xxx"
fixed-address java01; # 192.168.128.1
}
}
#
### End dhcpd.conf file
</PRE
></FONT
></TD
></TR
></TABLE
><P
> A longer
<A
HREF="http://dubinski-family.org/~jshowto/Files/conf/petes_dhcpd.conf.txt"
TARGET="_top"
>dhcpd.conf</A
> from the ZLS is mirrored here for demonstration purposes.
</P
><P
> Note: Some early versions of <SPAN
CLASS="application"
>ISC DHCPD</SPAN
> are
reported to not work well. It is recommended you use <SPAN
CLASS="application"
>ISC
DHCPD Version 2.0 and above</SPAN
>. If you still find youself
having problems, there is a patch to the ISC DHCP server on the ZLS website.
</P
></DIV
><DIV
CLASS="sect2"
><H2
CLASS="sect2"
><A
NAME="ServerSetup-ConfigureNFSSection"
>7.4. Set up <SPAN
CLASS="acronym"
>NFS</SPAN
> service (<SPAN
CLASS="QUOTE"
>"NFS-Root Options"</SPAN
>
Only)</A
></H2
><P
> When you are serving up an <SPAN
CLASS="QUOTE"
>"NFS-Root"</SPAN
> filesystem, you need
to share the filesystem you created to the <SPAN
CLASS="productname"
>JavaStation
</SPAN
> client. You do this with the <SPAN
CLASS="QUOTE"
>"/etc/exports"</SPAN
>
file.
</P
><TABLE
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><TR
><TD
><FONT
COLOR="#000000"
><PRE
CLASS="screen"
> ###/etc/exports
/path/to/nfsroot java01(rw,no_root_squash)
###
</PRE
></FONT
></TD
></TR
></TABLE
><P
> Be sure your <SPAN
CLASS="acronym"
>NFS</SPAN
> server gets properly started
up at boot-time.
</P
></DIV
><DIV
CLASS="sect2"
><H2
CLASS="sect2"
><A
NAME="ServerSetup-ConfigureTFTPSection"
>7.5. Setting up for Boot with <SPAN
CLASS="acronym"
>TFTP</SPAN
></A
></H2
><P
> Now we need to set up the last step on our server: the <SPAN
CLASS="acronym"
>TFTP
</SPAN
> configuration. For this step, you will need the kernel
you created (using the <SPAN
CLASS="QUOTE"
>"NFS-Root"</SPAN
> option) or the
piggybacked kernel/fs boot image (using the <SPAN
CLASS="QUOTE"
>"Embedded-Root"</SPAN
>
option), the appropriate <SPAN
CLASS="application"
>PROLL</SPAN
>, and some
knowledge of hexadecimal numbering.
</P
><P
> The first thing you need to do is verify that <SPAN
CLASS="QUOTE"
>"TFTPd"</SPAN
> is
enabled in your <SPAN
CLASS="QUOTE"
>"/etc/inetd.conf"</SPAN
> file:
</P
><TABLE
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><TR
><TD
><FONT
COLOR="#000000"
><PRE
CLASS="screen"
> tftp dgram udp wait root /usr/sbin/tcpd in.tftpd
</PRE
></FONT
></TD
></TR
></TABLE
><P
> Now, you move your copy of proll for your <SPAN
CLASS="productname"
>JavaStation
</SPAN
> architecture, along your kernel or piggybacked kernel
image to /tftpboot.
</P
><P
> Now, you create of symbolic link from the hexidecimal version of your
<SPAN
CLASS="acronym"
>IP</SPAN
> to your <SPAN
CLASS="application"
>PROLL</SPAN
> image,
and a map from <SPAN
CLASS="QUOTE"
>"HEXIP.PROL"</SPAN
> to your real kernel image. If
you are using <SPAN
CLASS="QUOTE"
>"Embedded-Root"</SPAN
> option, you point to your
<SPAN
CLASS="QUOTE"
>"Embedded-Root"</SPAN
> Filesystem plus Kernel image. If you are
using the <SPAN
CLASS="QUOTE"
>"NFS-Root"</SPAN
> option, you need to point to the
normal <SPAN
CLASS="QUOTE"
>"vmlinux.aout"</SPAN
> image, plus have a separate map of
<SPAN
CLASS="acronym"
>IP</SPAN
>->nfsroot location. For sake of completeness,
you might also want a <SPAN
CLASS="QUOTE"
>"HEXIP.SUN4M"</SPAN
> -> <SPAN
CLASS="QUOTE"
>"HEXIP
"</SPAN
> map, as that is the custom way of dealing with net boot
situations with the Sun.
</P
><P
> Example for java01 booting from <SPAN
CLASS="QUOTE"
>"NFS-Root"</SPAN
>:
</P
><TABLE
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><TR
><TD
><FONT
COLOR="#000000"
><PRE
CLASS="screen"
> $ ls -ld /tftpboot
-rw-r--r-- 1 root root 89608 Mar 20 10:15 proll.aout.krups.11
-rw-r--r-- 1 root root 52732 Mar 17 11:52 proll.aout.mrcoffee.11
lrwxrwxrwx 1 root root 19 Mar 20 10:16 proll.krups -> proll.aout.krups.11
lrwxrwxrwx 1 root root 22 Mar 17 11:54 proll.mrcoffee -> proll.aout.mrcoffee.11
lrwxrwxrwx 1 root root 10 Apr 1 13:00 C0A88001.SUN4M -> COA88001
lrwxrwxrwx 1 root root 10 Apr 1 13:00 C0A88001 -> proll.mrcoffee
lrwxrwxrwx 1 root root 12 Apr 1 13:00 C0A88001.PROL -> vmlinux.aout
-rw-r--r-- 1 root root 1456189 May 21 12:53 vmlinux.aout
-rw-r--r-- 1 root root 6743821 Apr 1 12:53 vmlinux_embed.aout
lrwxrwxrwx 1 root root 18 Apr 1 12:53 192.168.128.1 -> /path/to/nfsroot
</PRE
></FONT
></TD
></TR
></TABLE
><P
> Example for java01 booting from <SPAN
CLASS="QUOTE"
>"Embedded-Root"</SPAN
> boot image:
</P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><FONT
COLOR="#000000"
><PRE
CLASS="screen"
> $ ls -ld /tftpboot
-rw-r--r-- 1 root root 89608 Mar 20 10:15 proll.aout.krups.11
-rw-r--r-- 1 root root 52732 Mar 17 11:52 proll.aout.mrcoffee.11
lrwxrwxrwx 1 root root 19 Mar 20 10:16 proll.krups -> proll.aout.krups.11
lrwxrwxrwx 1 root root 22 Mar 17 11:54 proll.mrcoffee -> proll.aout.mrcoffee.11
lrwxrwxrwx 1 root root 10 Apr 1 13:00 C0A88001.SUN4M -> COA88001
lrwxrwxrwx 1 root root 10 Apr 1 13:00 C0A88001 -> proll.mrcoffee
lrwxrwxrwx 1 root root 12 Apr 1 13:00 C0A88001.PROL -> vmlinux_embed.aout
-rw-r--r-- 1 root root 1456189 May 21 12:53 vmlinux.aout
-rw-r--r-- 1 root root 6743821 Apr 1 12:53 vmlinux_embed.aout
</PRE
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