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Full Discussion: DNS issue still not looking in files
Top Forums UNIX for Advanced & Expert Users DNS issue still not looking in files Post 36754 by kie on Wednesday 4th of June 2003 07:57:50 AM
Old 06-04-2003
I've been looking into the DNS issue here what I got, I added a logical interface with the ip 1.1.1.1

cofdr01 > ifconfig hme0 addif 1.1.1.1 up
Created new logical interface hme0:1

added 1.1.1.1 testftp /etc/hosts
/etc/nsstich.conf was hosts:files dns
cofdr01 > ping 1.1.1.1
1.1.1.1 is alive
cofdr01 > nslookup testftp
Server: blah.blah
Address: 170.30.9.12

then changed nsswitch.conf

hosts: dns

ping didn't work either did nslookup

cofdr01 > arp -d 1.1.1.1
1.1.1.1 (1.1.1.1) deleted
cofdr01 > arp -d testftp
arp: testftp: unknown host

from testing this with truss I've found nslookup doesn't look in nsswitch, ping does as I added the files option to nsswitch.conf and

cofdr01 > ping testftp
testftp is alive

Dataprotector I think, looks for the existance existance of resolv.conf and goes ahead otherwise looks in /etc/hosts, I'll try a truss later on a UPDATE


heres the opened files whilst running

truss -o /tmp/kie omnicc -update_host mgunix11 ; grep open /tmp/kie
open("/var/ld/ld.config", O_RDONLY) Err#2 ENOENT
open("/usr/lib/libnsl.so.1", O_RDONLY) = 3
open("/usr/lib/libsocket.so.1", O_RDONLY) = 3
open("/usr/lib/libw.so.1", O_RDONLY) = 3
open("/usr/lib/libBrandChg.so", O_RDONLY) Err#2 ENOENT
open("/opt/omni/lib/libBrandChg.so", O_RDONLY) = 3
open("/usr/lib/libc.so.1", O_RDONLY) = 3
open("/usr/lib/libdl.so.1", O_RDONLY) = 3
open("/usr/lib/libmp.so.2", O_RDONLY) = 3
open("/usr/platform/SUNW,Ultra-4/lib/libc_psr.so.1", O_RDONLY) = 3
open("/etc/netconfig", O_RDONLY) = 3
open("/dev/udp", O_RDONLY) = 3
open64("/etc/.name_service_door", O_RDONLY) = 3
open64("/opt/omni/lib/nls/C/omni.cat", O_RDONLY) = 4
open("/usr/share/lib/zoneinfo/GB", O_RDONLY) = 5
open64("/etc/opt/omni/cell/cell_server", O_RDONLY) = 5
open("/etc/nsswitch.conf", O_RDONLY) = 5
open("/usr/lib/nss_files.so.1", O_RDONLY) = 5
open("/etc/services", O_RDONLY) = 5

it looks in nsswitch.conf bollx, wonder if it has a reading problem, I've copied a good nsswitch file from another. Could this be a new problem for the DP lab boys ?
 

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LEARN ABOUT FREEBSD

fd

FD(4)							   BSD Kernel Interfaces Manual 						     FD(4)

NAME

     fd, stdin, stdout, stderr -- file descriptor files

DESCRIPTION

     The files /dev/fd/0 through /dev/fd/# refer to file descriptors which can be accessed through the file system.  If the file descriptor is
     open and the mode the file is being opened with is a subset of the mode of the existing descriptor, the call:

	   fd = open("/dev/fd/0", mode);

     and the call:

	   fd = fcntl(0, F_DUPFD, 0);

     are equivalent.

     Opening the files /dev/stdin, /dev/stdout and /dev/stderr is equivalent to the following calls:

	   fd = fcntl(STDIN_FILENO,  F_DUPFD, 0);
	   fd = fcntl(STDOUT_FILENO, F_DUPFD, 0);
	   fd = fcntl(STDERR_FILENO, F_DUPFD, 0);

     Flags to the open(2) call other than O_RDONLY, O_WRONLY and O_RDWR are ignored.

IMPLEMENTATION NOTES

     By default, /dev/fd is provided by devfs(5), which provides nodes for the first three file descriptors.  Some sites may require nodes for
     additional file descriptors; these can be made available by mounting fdescfs(5) on /dev/fd.

FILES

     /dev/fd/#
     /dev/stdin
     /dev/stdout
     /dev/stderr

SEE ALSO

     tty(4), devfs(5), fdescfs(5)

BSD
								   June 9, 1993 							       BSD
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