Re: [9fans] dns not running

Re: [9fans] dns not running

[forsyth]

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from the manual page

          Kill prints commands that will cause all processes called
          name and owned by the current user to be terminated.  Use
          the send command of rio(1), or pipe the output of kill into
          rc(1) to execute the commands.

it's not the same as unix.


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To: cse.psu.edu!9fans
Subject: Re: [9fans] dns not running
Date: Mon, 4 Dec 2000 18:28:20 +0100
Message-ID: <20001204182820.A257@localhost.local>

This worked very nicely and got dns running. However, how do
I kill it off? When I use "kill dns" I get,

	echo kill >/proc/105/note

Then when I check with "ps" ... it shows dns as still there.

Note: In the past, to kill a process or app running in the
window I simply "killed" the window with the mouse. I know this
is probably not the right way to do things but it seems
to have worked up to now. What is the right way to do it?

Bill

On Sat, Dec 02, 2000 at 08:16:16PM -0500, Russ Cox wrote:
> Your problem is not that you're not running ip/ipconfig.
> It is, as you point out, that dns does not start at boot.
> This is by design -- no ip address, no dns.  After using
> ip/ppp to dial your ISP, you should start dns with ndb/dns -r
> (perhaps set DNSSERVER too).  When you're done, kill it off.
> 
> One other thing: in order for this to work you need to
> make the following change to /sys/src/libndb/dnsquery.c
> 
> diff dnsquery.c odnsquery.c
> 44c44
> < 		if(mount(fd, net, MBEFORE, "") < 0)
> ---
> > 		if(mount(fd, net, MAFTER, "") < 0)
> 
> That's line 44, change MAFTER to MBEFORE.
> 
> Then 
> 	cd /sys/src/libndb
> 	mk install
> 	mk clean
> 	cd /sys/src/cmd/ndb
> 	mk install
> 	mk clean
> 
> That will get you a new ndb/cs that will notice the new
> dns once you start it.  (That fix will be in the next
> release.)
> 
> Russ

Re: [9fans] dns not running

[William Staniewicz]

Yes, it seems simple now ...

term% kill dns|rc

... I just had to unlearn the unix/FreeBSD reflex.

Bill

On Mon, Dec 04, 2000 at 05:45:28PM +0000, forsyth@vitanuova.com wrote:
> from the manual page
> 
>           Kill prints commands that will cause all processes called
>           name and owned by the current user to be terminated.  Use
>           the send command of rio(1), or pipe the output of kill into
>           rc(1) to execute the commands.
> 
> it's not the same as unix.
> 

Re: [9fans] dns not running

[William Staniewicz]

This worked very nicely and got dns running. However, how do
I kill it off? When I use "kill dns" I get,

	echo kill >/proc/105/note

Then when I check with "ps" ... it shows dns as still there.

Note: In the past, to kill a process or app running in the
window I simply "killed" the window with the mouse. I know this
is probably not the right way to do things but it seems
to have worked up to now. What is the right way to do it?

Bill

On Sat, Dec 02, 2000 at 08:16:16PM -0500, Russ Cox wrote:
> Your problem is not that you're not running ip/ipconfig.
> It is, as you point out, that dns does not start at boot.
> This is by design -- no ip address, no dns.  After using
> ip/ppp to dial your ISP, you should start dns with ndb/dns -r
> (perhaps set DNSSERVER too).  When you're done, kill it off.
> 
> One other thing: in order for this to work you need to
> make the following change to /sys/src/libndb/dnsquery.c
> 
> diff dnsquery.c odnsquery.c
> 44c44
> < 		if(mount(fd, net, MBEFORE, "") < 0)
> ---
> > 		if(mount(fd, net, MAFTER, "") < 0)
> 
> That's line 44, change MAFTER to MBEFORE.
> 
> Then 
> 	cd /sys/src/libndb
> 	mk install
> 	mk clean
> 	cd /sys/src/cmd/ndb
> 	mk install
> 	mk clean
> 
> That will get you a new ndb/cs that will notice the new
> dns once you start it.  (That fix will be in the next
> release.)
> 
> Russ

Re: [9fans] dns not running

[presotto]

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Same answer, we don't do it.

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From: "Boyd Roberts" <boyd@planete.net>
To: <9fans@cse.psu.edu>
Subject: Re: [9fans] dns not running
Date: Sun, 3 Dec 2000 22:27:30 +0100
Message-ID: <03fb01c05d6f$d84c3580$0ab9c6d4@cybercable.fr>

> actually, we assign no special meaning to the 127 network in our stack.
> You thinking Unix?

maybe you should think IANA?

    http://www.isi.edu/in-notes/iana/assignments/ipv4-address-space

    127/8  IANA - Reserved    Sep 81

Re: [9fans] dns not running

[Boyd Roberts]

> actually, we assign no special meaning to the 127 network in our stack.
> You thinking Unix?

maybe you should think IANA?

    http://www.isi.edu/in-notes/iana/assignments/ipv4-address-space

    127/8  IANA - Reserved    Sep 81

Re: [9fans] dns not running

[presotto]

>you always have an IP address 127.0.0.1 and running
>a dns is always a good idea as long as it implements
>a cache as per BIND.  speeds up DNS lookups.

actually, we assign no special meaning to the 127 network in our stack.
You thinking Unix?

> i've never liked ip/ipconfig.  i like the dns config
> files, but was horrified to learn that it finds the
> hostname (never documented) by ethernet address.

Dns doesn't use the ether address for anything.

The only place we connect an ethernet address and
an ip one is in dhcpd.  We use the ether address to
identify a system that's bootping or dhcping.  That's
only if you're trying to give a static address to a
system.  Since we run our systems diskless (or as close
as we can get) that's the only bit of information that
a bootping system reliably has to identify itself.

ndb/cs will use the ether address to figure out
the system name only if all of the above are true
	1) /env/sysname doesn't contain a name
	2) the ip address doesn't map to a name in the database
	3) dhcp didn't leave a name in /net/ndb

Re: [9fans] dns not running

[Boyd Roberts]

From: Russ Cox <rsc@plan9.bell-labs.com>

> Your problem is not that you're not running ip/ipconfig.
> It is, as you point out, that dns does not start at boot.
> This is by design -- no ip address, no dns.

you always have an IP address 127.0.0.1 and running
a dns is always a good idea as long as it implements
a cache as per BIND.  speeds up DNS lookups.

i've never liked ip/ipconfig.  i like the dns config
files, but was horrified to learn that it finds the
hostname (never documented) by ethernet address.

pull the card -- start again.

admittedly my point of view comes from the unix world,
but i do understand that the labs environment is very
different.

a DNS implementation is not to be undertaken lightly.

Re: [9fans] dns not running

[Russ Cox]

Your problem is not that you're not running ip/ipconfig.
It is, as you point out, that dns does not start at boot.
This is by design -- no ip address, no dns.  After using
ip/ppp to dial your ISP, you should start dns with ndb/dns -r
(perhaps set DNSSERVER too).  When you're done, kill it off.

One other thing: in order for this to work you need to
make the following change to /sys/src/libndb/dnsquery.c

diff dnsquery.c odnsquery.c
44c44
< 		if(mount(fd, net, MBEFORE, "") < 0)
---
> 		if(mount(fd, net, MAFTER, "") < 0)

That's line 44, change MAFTER to MBEFORE.

Then 
	cd /sys/src/libndb
	mk install
	mk clean
	cd /sys/src/cmd/ndb
	mk install
	mk clean

That will get you a new ndb/cs that will notice the new
dns once you start it.  (That fix will be in the next
release.)

Russ

[9fans] dns not running

[William Staniewicz]

Dns does not appear to be running.

I seem to have IP connectivity:

        term% ip-ping 195.121.1.34
 
        rtt 116334 ^B^us, avg rtt 116334 ^B^us, ttl = 252
        rtt 122158 ^B^us, avg rtt 119246 ^B^us, ttl = 252
        rtt 109938 ^B^us, avg rtt 116143 ^B^us, ttl = 252
        ...(this goes on for several lines)
 
        term% netstat -ni
 
        pkt0     1514  195.121.218.20   /128             193.172.249.11   0          0
        0      0

Also, /srv/dns is missing.

Here is my /rc/bin/termrc,


	#!/bin/rc -x

	# replace FILESERVER with the name of your file server
	# here we start with kfs, your local disk file system
	fileserver=kfs
	host=myhostname
	pass=mypassword
	# replace CPU with the name of your cpu server
	cpu=CPU
	# replace FACEDOM with the local domain to be used in the faces database
	facedom=FACEDOM

	# cs sets sysname
	ndb/cs
	sysname=`{cat /dev/sysname}

	# mount mail uncached
	mount -c /srv/boot /n/termrc.tmp
	bind -c /n/termrc.tmp/mail /mail
	unmount /n/termrc.tmp

	# start ethernet if any; ignore errors
	ip/ipconfig >/dev/null >[2=1]

	ndb/dns -r
	aux/timesync -rL

	switch($terminal){
	case carrera*
		bind -a '#t' /dev
	case *' ss'*
		/bin/bind -a '#w' /dev >/dev/null >[2=1]
		/bin/bind -a '#t' /dev >/dev/null >[2=1]
	case *' magnum'*
		/bin/bind -a '#m' /dev >/dev/null >[2=1]
		/bin/bind -a '#t' /dev >/dev/null >[2=1]
		aux/mouse -dC 0
	case *' indigo'*
		/bin/bind -a '#L' /dev >/dev/null >[2=1]
		/bin/bind -a '#w1' /dev >/dev/null >[2=1]
		/bin/bind -a '#t' /dev >/dev/null >[2=1]
		/bin/bind -a '#A' /dev >/dev/null >[2=1]
	case NCR* 'AT&TNSX'* generic* _MP_* 'alpha apc'*
		for(i in f t m L S)
			/bin/bind -a '#'^$i /dev >/dev/null >[2=1]
		for(disk in /dev/sd??) {
			disk/fdisk -p $disk/data >$disk/ctl >[2]/dev/null
			for(part in $disk/plan9*)
				if(test -f $part)
					disk/prep -p $part >$disk/ctl >[2]/dev/null
		}
		if(test -f /dev/mousectl){
			switch($mouseport){
			case ps2 ps2intellimouse 0 1 2
				aux/mouse $mouseport

				# parse vgasize into fields
				vgasize=`{echo $vgasize}

				if(! ~ $monitor '' && ! ~ `{cat /dev/user} none){
					aux/vga -l $vgasize
					# turn off hardware acceleration until you know it's ok.
					echo -n 'hwaccel off' >'#v/vgactl' >[2]/dev/null
				}
			}
		}
		if(test -f /dev/sd*/swap){
			x=(`{echo /dev/sd*/swap})
			swap $x(1) >/dev/null >[2=1]
		}
		if(test -f /dev/sd*/dos*){
			dossrv
			c:
		}
	}