RE: [squid-users] SQUID and DNS problem (fwd)

Peter,

Thank you for your answer.

I check my nsswitch.conf & /etc/hosts file .
When I make a ping on an hostname (add in /etc/hosts) on the proxy
server , it works perfectly . But the main issue is Squid doesn't seem to
use
/etc/hosts to resolve address .

I compiled Squid with ./configure --disable-internal-dns .

Do I need to configure something in the squid.conf ?

My squid version is Squid/2.4.STABLE1 .

Thanks you,
Mehdi

-----Message d'origine-----
De : Peter Cheney [mailto:pcheney@thiess.com.au]
Envoyé : mar. 14 août 2001 01:57
À : Mehdi Melhaa
Objet : RE: [squid-users] SQUID and DNS problem (fwd)

Just a quick note...

If the system cannot resolve addresses then how can squid or any other app?

To check if your system can resolve addresses properly use nslookup or dig
or even ping. YOu should be able to do a forward lookup up a host, or a
Fully Qualified Domain Name (host.domain.com), or a reverse lookup of an
address to get a FQDN and any aliases.

If your system cannot do this then you haven't set it up right. If you're
not using nis or nisplus then /etc/nsswitch.conf could look like:
hosts: files dns

If you suspect DNS to be at fault then add the hostname and IP address to
/etc/hosts:

10.1.3.1 hostname.domain.com hostname

Then try and reolve the name by pinging either hostname.domain.com or
hostname. The system should be able to resolve hostname to 10.1.3.1 (or
whatever that address may be) immediately. The ping still may not work if
you have further network/routing problems and you'll need to troubleshoot
this seperately...netmask and default route correct etc...

You could also use tcpdump or snoop etc to monitor traffic on ethernet
ports. This is sometimes useful when troubleshooting network issues.

HTH
Peter

|Date: Mon, 13 Aug 2001 09:56:23 +0200
|From: Mehdi Melhaa <Mehdi.Melhaa@fr.clientlogic.com>
|To: Neil A. Hillard <hillardn@whl.co.uk>
|Cc: squid-users@squid-cache.org
|Subject: RE: [squid-users] SQUID and DNS problem (fwd)
|
|Neil,
|
|Thank you for your help, but it doesn't work any more.
|I can't configure squid to resolve address with /etc/hosts.
|
|I don't understand.
|Thanks in advance.
|
|Regards,
|
|Mehdi
|
|
|Mehdi,
|
|> Sorry to disturb you but I think you can't
|> save me :)
|>=20
|> I have the same problem than Fabio.
|> I would like to resolve address with /etc/hosts first and=20
|> DNS after. I configure my /etc/nsswitch.conf
|>=20
|> This is the extract of nsswitch.conf :
|>=20
|> hosts: files nisplus nis dns
|>=20
|> I restart squid.
|> But it doesn't work , squid resolve address with DNS first.
|> I don't know why.=20
|>=20
|> My squid version is Squid/2.4.STABLE1 .
|Shouldn't you run ./configure with --disable-internal-dns to enable the
|old dnsserver processes ???
|
|
|=09=09=09=09Neil.
|
|> -----Message d'origine-----
|> De : F=E1bio S. Torres [mailto:fast.net@ig.com.br]
|> Envoy=E9 : ven. 10 ao=FBt 2001 04:33
|> =C0 : Peter Cheney
|> Cc : Squid List
|> Objet : Re: [squid-users] SQUID and DNS problem (fwd)
|>=20
|>=20
|> Thank you Peter,
|>=20
|> I'll try this asap !!!
|>=20
|> I hope it helps me so !!!!
|>=20
|>=20
|> ----- Original Message -----
|> From: Peter Cheney <pcheney@thiess.com.au>
|> To: F=E1bio S. Torres <fast.net@ig.com.br>
|> Sent: Thursday, August 09, 2001 10:53 PM
|> Subject: Re: [squid-users] SQUID and DNS problem (fwd)
|>=20
|>=20
|> > Fabio,
|> >
|> > Here is reply I sent you some days ago to your other address but it
|> bounced.
|> >
|> > HTH
|> > Peter
|> >
|> > --
|> > Peter Cheney P: +61 (7) 3002 9814
|> > System Administrator F: +61 (7) 3002 9829
|> > Thiess Pty Ltd M: +61 (4) 0818 6290
|> > 'We are not human beings having a spiritual experience. We are
spiritua=
|l
|> beings having a human experience.'
|> >
|> > ---------- Forwarded message ----------
|> > Date: Wed, 8 Aug 2001 12:37:43 +1000 (EST)
|> > From: Peter Cheney <pcheney@thiess.com.au>
|> > To: "[iso-8859-1] F=E1bio S. Torres" <ftorres@centralink.cjb.net>
|> > Subject: Re: [squid-users] SQUID and DNS problem
|> >
|> > Hi,
|> >
|> > Your /etc/resolv.conf file should look something like this....
|> >
|> > domain company.com
|> > nameserver 10.1.3.1
|> > nameserver 10.1.3.2
|> > nameserver 10.1.3.3
|> > search company.com
|> >
|> > Where: company.com is your registered domain name that the squid proxy
|> server is connected to (eg proxy.company.com) and the 10.1.3.1, 10.1.3.2,
|> 10.1.3.3 are the primary, secondary, and ternary nameservers for your
|> domain.
|> >
|> > If you aren't using DNS then you will likely need to add an antry into
|> /etc/hosts so that the proxy can resolve the name into an address.
|> >
|> > /etc/nsswitch.conf is another file that helps determin the order in
whi=
|ch
|> things are searched, eg look in /etc/hosts first, then DNS, then NIS etc
|> etc. You may need to alter this file to acheive the correct result
depend=
|ing
|> how you decide to resolve names.
|> >
|> > HTH
|> > Peter
|> >
|> > |Date: Tue, 07 Aug 2001 23:23:39 -0300
|> > |From: "[iso-8859-1] F=E1bio S. Torres" <fast.net@ig.com.br>
|> > |Reply-To: "[iso-8859-1] F=E1bio S. Torres"
<ftorres@centralink.cjb.net=
|>
|> > |To: Squid List <squid-users@squid-cache.org>
|> > |Subject: [squid-users] SQUID and DNS problem
|> > |
|> > |I'm trying to configurate SQUID, but I'm receiving a message tha it
co=
|uld
|> not resolv the address name
|> > |I tried to edit /etc/resolv.conf but it didn't get good result
|> > |
|> > |Some body can help me...???
|> > |
|> > |Thanks
|> > |
|> > |
|> > | Fabio...
|> > |
|> >
|> > --
|> > Peter Cheney P: +61 (7) 3002 9814
|> > System Administrator F: +61 (7) 3002 9829
|> > Thiess Pty Ltd M: +61 (4) 0818 6290
|> > 'We are not human beings having a spiritual experience. We are
spiritua=
|l
|> beings having a human experience.'
|> >
|> >
|> > ******************
|> > IMPORTANT - This email and any attachments may be confidential and
|> privileged. If received in error, please contact Thiess and delete all
|> copies. You may not rely on advice and documents received by email unless
|> confirmed by a signed Thiess letter. Before opening or using attachments,
|> check them for viruses and defects. Thiess' liability is limited to
|> resupplying any affected attachments.
|> > ******************
|>=20
|
|--=20
|Neil Hillard hillardn@whl.co.uk
|Westland Helicopters Ltd. http://www.whl.co.uk/
|
|Disclaimer: This message does not necessarily reflect the
| views of Westland Helicopters Ltd.
|

-- 
Peter Cheney                         P: +61 (7) 3002 9814
System Administrator                 F: +61 (7) 3002 9829
Thiess Pty Ltd                       M: +61 (4) 0818 6290
'We are not human beings having a spiritual experience. We are spiritual
beings having a human experience.'
******************
IMPORTANT - This email and any attachments may be confidential and
privileged. If received in error, please contact Thiess and delete all
copies. You may not rely on advice and documents received by email unless
confirmed by a signed Thiess letter. Before opening or using attachments,
check them for viruses and defects. Thiess' liability is limited to
resupplying any affected attachments.
******************