10-07-2009
change root password on t5120
hi all, i have a problem with a sun server, since a while the root password has been lost and now that we need to give maintenance to the services hosted in it, we cant access it, i tried a method to change it by booting from cd but i cant direct the server to boot from the cd. (The server is on auto boot), i couldnt acces the ok prompt either by the break key method (i dont know if i did it right, i just know you're supposed to press break when the server starts the self-test), any help would be apreciated thx
model: t5120
os: solaris 10
using a wyse terminal via serial conection
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BOOTP(8) System Manager's Manual BOOTP(8)
NAME
bootp, rarpd, tftpd - Internet booting
SYNOPSIS
ip/bootp [-d]
ip/rarpd [-d] [-e etherdev]
ip/tftpd [-dr] [-h homedir]
DESCRIPTION
These programs support booting over the Internet. They should all be run on the same server to allow other systems to be booted. Bootp
and tftpd are used to boot everything; rarpd is an extra piece just for Suns.
Bootp passes to Plan 9 systems their IP address, IP mask, default boot file, default file server, default authentication server, and
default gateway. These come from the network database file attributes ip, ipmask, bootf, fs, auth, and ipgw attributes respectively (see
ndb(6) and ndb(8)). The attributes come from the entry for the system, its subnet, and its network with the system entry having prece-
dence, subnet next, and network last. Bootp will answer requests only if it has been specifically targeted or if it has read access to the
boot file for the requester. The -d option causes debugging to be printed to standard output.
Rarpd performs the Reverse Address Resolution Protocol, translating Ethernet addresses into IP addresses. The options are:
d print debugging to standard output
e use the Ethernet mounted at /net/etherdev
Tftpd transfers files to systems that are booting. It runs as user none and can only access files with global read permission. The
options are:
d print debugging to standard output
h change directory to homedir. The default is /lib/tftpd. All requests for files with non-rooted file names are served starting at
this directory with the exception of files of the form xxxxxxxx.SUNyy. These are Sparc kernel boot files where xxxxxxxx is the hex
IP address of the machine requesting the kernel and yy is an architecture identifier. Tftpd looks up the file in the network data-
base using ipinfo (see ndb(2)) and responds with the boot file specified for that particular machine. If no boot file is specified,
the transfer fails. Tftpd supports only octet mode.
r restricts access to only files rooted in the homedir.
SOURCE
/sys/src/cmd/ip
SEE ALSO
ndb(6)
BOOTP(8)