drl@vuse.vanderbilt.edu (David R. Linn) (11/21/89)
I am looking for information concerning use of DNS in a network of Sun and HP workstations and DNS-knowledgable PCs (NCSA-TELNET). I understand that there are some sort of bad interactions between DNS and YP (which I wich to continue using). Please send any information and experience (for or against) you may have concerning this topic to me by mail; it there is interest, I will summarize to the list. David David Linn / drl@vuse.vanderbilt.edu / ...!uunet!vuse.vanderbilt.edu!drl
terry@eesun1.eece.ksu.edu (Terry Hull) (05/29/90)
People seem to have problems getting YP and the DNS to cooperate and as I was looking over some old Sun-Spots articles, I had an idea. Has anybody out there tried eliminating /etc/hosts service from YP, and replacing the Sun r-utilities with the BSD versions and just linking them with the Berkeley named resolver routines? It seems like this method would allow continued use of YP for things like /etc/passwd, and also allow distributed hostname service using DNS. What problems do you sun.experts see with this scheme? If you have nameservers running, why do you need /etc/hosts served by YP? Terry Hull Department of Electrical and Computer Engineering, Kansas State University Work: terry@eece.ksu.edu, rutgers!ksuvax1!eecea!terry Play: terry@tah386.manhattan.ks.us, rutgers!ksuvax1!eecea!tah386!terry
lindh@uhasun.hartford.edu (Andrew Lindh) (05/31/90)
In article <8224@brazos.Rice.edu>, terry@eesun1.eece.ksu.edu (Terry Hull) writes: > People seem to have problems getting YP and the DNS to cooperate and as I > was looking over some old Sun-Spots articles, I had an idea....... Here is how you get ALL suns running YP to get names from BOTH the YP files and the DNS host. And you do not need the SunOS Source! You first need to set up a host with DNS. This host does not have to be a Sun and it does not have to be the YP master. step 1: Set up DNS correctly on some machine step 2: Set up ALL suns as DNS users. edit the file /etc/resolv.conf to contain the correct lines. Example: (note domain is not the same as YP domainname 192.52.156.100 is our main DNS on campus it is a VAXstation 3100 with ultrix) ----- domain hartford.edu nameserver 192.52.156.100 nameserver 192.35.82.2 nameserver 192.33.4.12 ----- step 3: edit the file /var/yp/Makefile of you YP master (not the YP slaves or clients) find the section where is does a makedbm on the host files (line 59? starts with "hosts.time") add "-b" after both "($MAKEDBM)" statements and before the "-". This IS documented the man page step 4: reboot This tells the system to use YP and then check DNS. But there is a problem with this.....on some 4.0.3 (4.1??) systems it will forget to check DNS sometimes, you then need to reboot the systems You will need to check the manuals to correctly set up DNS. You can use the /usr/etc/nslookup program to check the DNS setup. Good Luck.....and yes it works here, including PC-NFS!! Andrew Lindh, a student at the University of Hartford -- Computer Science BITNET: LINDH@HARTFORD.bitnet INTERNET: lindh@uhasun.uofh.edu UUCP/Usenet: lindh@evecs.uucp ---- When will I grduate??? NOTE: All views here are MINE!!! Not the schools or thoes of anyone else!