Randall R Schulz wrote:

On Wednesday April 8 2009, Patrick Shanahan wrote:

...

* Randall R Schulz [04-08-09 20:51]:

...

Having switched my two systems from their fake names to the synthetic but real DNS names assigned by the ISP based on their (static) IP address, I find I am no longer able to access these hosts by their local aliases.

...

What's the configuration I need to be able to use the short aliases on these two hosts? I believe you have not filled in the fields correctly.

numeric.addr alpha.addr alias

in the first you have numeric.addr alias and the second numberic.addr alpha.addr alias xxxxxx

I got the impression multiple aliases were supported.

...

try

twain: # Fayette208 LAN 208.201.233.232 208-202-233-232.dsl.static.sonic.net twain 208.201.233.233 208-201-233-233.dsl.static.sonic.net smiley

I still get this (from twain, with the aforementioned entries in /etc/hosts):

% host twain Host twain not found: 3(NXDOMAIN)

% host smiley Host smiley not found: 3(NXDOMAIN)

It's almost as if /etc/hosts isn't being consulted at all. Along those lines, resolv.conf includes these (non-comment) lines:

search sonic.net nameserver 208.201.224.11 nameserver 208.201.224.33

...

...

-- Patrick Shanahan

Randall Schulz

Randall, From you resolv.conf, I take it you are on 208.201.233.0/24, you don't have a caching only dns setup so you are looking to 208.201.224.11 & 13 for name resolution?? I can't tell you why /etc/hosts isn't getting searched, but Patrick is right, the /etc/hosts entries should look something like: # Syntax: # # IP-Address Full-Qualified-Hostname Short-Hostname # 127.0.0.1 localhost # special IPv6 addresses ::1 localhost ipv6-localhost ipv6-loopback fe00::0 ipv6-localnet ff00::0 ipv6-mcastprefix ff02::1 ipv6-allnodes ff02::2 ipv6-allrouters ff02::3 ipv6-allhosts 127.0.0.2 ecstasy.3111skyline.com ecstasy 192.168.6.15 ecstasy.3111skyline.com ecstasy It also makes sense that from resolv.conf nameserver 208.201.224.11 & 13 wouldn't be of much help with internal addresses on 208.201.233.0/24 if I understand what your setup looks like?? -- David C. Rankin, J.D.,P.E. Rankin Law Firm, PLLC 510 Ochiltree Street Nacogdoches, Texas 75961 Telephone: (936) 715-9333 Facsimile: (936) 715-9339 www.rankinlawfirm.com -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org

On Wednesday April 8 2009, Lew Wolfgang wrote:

...

Randall, what does your /etc/nsswitch.conf look like? It should have a hosts: line that mentions "files". If it doesn't your /etc/hosts won't be consulted. My stock one is:

hosts: files mdns4_minimal [NOTFOUND=return] dns

It is (sans comments): -==--==--==--==--==--==--==--==--==--==--==--==--==- passwd: compat group: compat hosts: files mdns4_minimal [NOTFOUND=return] dns networks: files dns services: files protocols: files rpc: files ethers: files netmasks: files netgroup: files nis publickey: files bootparams: files automount: files nis aliases: files -==--==--==--==--==--==--==--==--==--==--==--==--==- So if I understand that correctly it seems "files" should take precedence in all host-name lookups.

Regards, Lew

Randall Schulz -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org

Randall R Schulz pecked at the keyboard and wrote:

On Wednesday April 8 2009, Patrick Shanahan wrote:

...

* Randall R Schulz [04-08-09 20:51]:

...

Having switched my two systems from their fake names to the synthetic but real DNS names assigned by the ISP based on their (static) IP address, I find I am no longer able to access these hosts by their local aliases.

...

What's the configuration I need to be able to use the short aliases on these two hosts? I believe you have not filled in the fields correctly.

numeric.addr alpha.addr alias

in the first you have numeric.addr alias and the second numberic.addr alpha.addr alias xxxxxx

I got the impression multiple aliases were supported.

...

try

twain: # Fayette208 LAN 208.201.233.232 208-202-233-232.dsl.static.sonic.net twain 208.201.233.233 208-201-233-233.dsl.static.sonic.net smiley

Try changing to: 208.201.233.232 twain.sonic.net twain 208.201.233.233 smiley.sonic.net smiley and you will get better results (I think, but then again my brain is not what it use to be)

I still get this (from twain, with the aforementioned entries in /etc/hosts):

% host twain Host twain not found: 3(NXDOMAIN)

% host smiley Host smiley not found: 3(NXDOMAIN)

It's almost as if /etc/hosts isn't being consulted at all. Along those lines, resolv.conf includes these (non-comment) lines:

search sonic.net nameserver 208.201.224.11 nameserver 208.201.224.33

...

...

-- Patrick Shanahan

Randall Schulz

-- Ken Schneider SuSe since Version 5.2, June 1998 -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org

On 04/09/2009 10:02 PM, Randall R Schulz wrote:

On Thursday April 9 2009, Ken Schneider - openSUSE wrote:

...

Try changing to:

208.201.233.232 twain.sonic.net twain 208.201.233.233 smiley.sonic.net smiley

Sonic.net net knows not of twain and smiley. They're my fictitious names for these two hosts.

I believe Ken was getting that from your search line in resolv.conf. It would find them if searching for twain or smiley locally, but I believe that is not your goal. -- Joe Morris Registered Linux user 231871 running openSUSE 11.1 x86_64 -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org

On Thursday April 9 2009, Ken Schneider - openSUSE wrote:

Randall R Schulz pecked at the keyboard and wrote:

...

...

...

Try changing to:

208.201.233.232 twain.sonic.net twain 208.201.233.233 smiley.sonic.net smiley

Sonic.net net knows not of twain and smiley. They're my fictitious names for these two hosts.

I realize that as it would only be used for internal purposes not external even though they have public addresses.

Regardless, it doesn't work. Does anyone out there have working aliases for hosts on their LANs? If so, is there a trick? Some sort of magic incantation? Maybe a blood sacrifice of some sort I must make? (My cat draws blood from time to time, if that would count.)

-- Ken Schneider

Randall Schulz -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org

On Thursday April 9 2009, Patrick Shanahan wrote:

* Randall R Schulz [04-09-09 13:40]:

...

...

Does anyone out there have working aliases for hosts on their LANs? If so, is there a trick? Some sort of magic incantation? Maybe a blood sacrifice of some sort I must make? (My cat draws blood from time to time, if that would count.)

Then why don't you use the local addresses, 192.168.x.x. That is how I use aliases in my /etc/hosts for computers on my lan. I also have aliases for computers outside my net that I support, but they have *semi* permanent ip nos requiring attention occasionally.

I actually think this won't work, and the reason I think that is that I'm virtually certain that my /etc/hosts is _not_ being consulted at all. I added a line for the address I had before moving across town (and I landed on a part of the network that forced my ISP to give me new IP addresses): 64.142.14.4 64-142-14-4.dsl.static.sonic.net twain-of-yore And still this: % host twain-of-yore Host twain-of-yore not found: 3(NXDOMAIN) Randall Schulz -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org

On Thursday April 9 2009, Lew Wolfgang wrote:

Randall R Schulz wrote:

...

I actually think this won't work, and the reason I think that is that I'm virtually certain that my /etc/hosts is _not_ being consulted at all.

I added a line for the address I had before moving across town (and I landed on a part of the network that forced my ISP to give me new IP addresses):

64.142.14.4 64-142-14-4.dsl.static.sonic.net twain-of-yore

And still this:

% host twain-of-yore Host twain-of-yore not found: 3(NXDOMAIN)

Why don't you try "strace ping twain-of-yore | grep hosts". This should show the call to /etc/hosts, if it's being referenced. If it is, do you have a clean /etc/hosts? Non-printing characters might mess things up.

Good idea. % strace ping twain-of-yore -c 1 2>&1 |egrep hosts open("/etc/hosts", O_RDONLY|O_CLOEXEC) = 5 read(5, "#\n# hosts This file desc"..., 4096) = 944 % ll /etc/hosts -rw-r--r-- 1 root root 944 2009-04-09 12:22 /etc/hosts Later on (in the strace output) I see the binding of the address for twain-of-yore and the attempt to ping that address. However, this led to some more interesting discoveries. First of all, that host ("twain-of-yore") is either not in service or is not responding to pings. It's just an address that's still floating in my mind. So I tried to ping twain and smiley (by those names) and... it WORKED! So I straced that ping invocation, and it does indeed open nsswitch.conf, resolv.conf and hosts. Next I traced the "host" command. It _does not_ use nsswitch. It only opens resolv.conf. So there's been some "red herring" effect going on here. I've repeatedly tested my modifications to /etc/hosts by using the "host" command, which apparently is only for querying the DNS system, bypassing any local aliases! Another proud D'Oh! moment.

Regards, Lew

Randall Schulz -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org

On Friday 10 April 2009 12:12:38 Carlos E. R. wrote:

For some strange reason I don't know about, the command "host" queries the dns server first, or only

Only. "host" is a part of of the collection of DNS utilities we have from ISC. Its express purpose is to query DNS servers man host NAME host - DNS lookup utility DESCRIPTION host is a simple utility for performing DNS lookups. Anders -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Friday, 2009-04-10 at 09:29 -0700, John Andersen wrote:

...

For some strange reason I don't know about, the command "host" queries the dns server first, or only, while ping and other commands queries the file hosts first.

I have, in "/etc/hosts":

172.16.168.128 bambi

(a small windows under vmware)

then:

cer@nimrodel:~> host bambi Host bambi not found: 3(NXDOMAIN)

However:

cer@nimrodel:~> ping bambi PING bambi (172.16.168.128) 56(84) bytes of data. - From 192.168.153.1: icmp_seq=1 Packet filtered - From 192.168.153.1 icmp_seq=1 Packet filtered - From 192.168.153.1 icmp_seq=2 Packet filtered

(which is correct as vmware is not running now)

Thats as it should be.

If you want host command to work add a file to /etc/named.d/ for bambi and include it (or the meta include) in /etc/named.conf

I haven't bothered yet :-)

This will also allow your samba server to resolve other names and aliases.

Ah, that's interesting, I may do that.

This is a bind (named) issue, not a hosts file issue.

That part I know :-) I used "bambi" because that's one entry I have in hosts but not in named, to test a somewhat similar configuration to that of Randall and see for myself. But now I might add that configuration to named - hoping that vmware keeps the IPs it gives to different virtual machines stable, or configuring named might be a waste of time. - -- Cheers, Carlos E. R. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.9 (GNU/Linux) iEYEARECAAYFAknfpPUACgkQtTMYHG2NR9VNZgCeJHBQY+vaML2BkZJaebMKYeGr YxsAnjWPHIP3xNP7x260fwP9174NH5An =N7GG -----END PGP SIGNATURE----- -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org