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Hostname lookup resolution error

fajarpri2

Hi all,

IBM N3600 with dual controller, active/active setup

Data Ontap 7.3.3

There is error that it cannot resolve the hostname of autosupport.

Sat Jan 22 17:50:26 SGT [n3600a: asup.post.host:info]: Autosupport (REBOOT (reboot command)) cannot connect to url eccgw01.boulder.ibm.com/support/electronic/nas (Could not find hostname 'eccgw01.boulder.ibm.com', hostname lookup resolution error: Unknown host)

However the network settings, Gateway, and DNS are correct.

I'm not sure why it errors.

Is there any traceroute command I can use on the filer?

Thank you.

5 REPLIES 5

Re: Hostname lookup resolution error

fajarpri2

After some more research I stumble upon "dns" options, and it turns out that setting up DNS server without enabling dns resolver option is no good.

And I can only make it good by re-running the setup command in order to make it stick in /etc/rc file.

But somehow it's not updating???

n3600a> dns info
DNS is disabled

n3600a> ping eccgw01.boulder.ibm.com
ping: unknown host: eccgw01.boulder.ibm.com

n3600a> options dns.enable on
** Option dns.enable is being set to "on", but this conflicts
** with a line in /etc/rc that sets it to "off".
** Options are automatically persistent, but the line in /etc/rc
** will override this persistence, so if you want to make this change
** persistent, you will need to change (or remove) the line in /etc/rc.
Sat Jan 22 18:44:11 SGT [n3600a: reg.options.overrideRc:warning]: Setting option dns.enable to 'on' conflicts with /etc/rc that sets it to 'off'.
You are changing option dns.enable which applies to both members of
the cluster in takeover mode.
This value must be the same in both cluster members prior to any takeover
or giveback, or that next takeover/giveback may not work correctly.
Sat Jan 22 18:44:11 SGT [n3600a: reg.options.cf.change:warning]: Option dns.enable changed on one cluster node.

Re: Hostname lookup resolution error

fajarpri2

n3600a> dns info
DNS is enabled

DNS cannot be initialized

Re: Hostname lookup resolution error

fajarpri2

Ok I have edited the /etc/rc to enable dns. Reboot. But problem persists

n3600a> rdfile /etc/rc
#Edited to activate dns by Fajar Sat Jan 22 18:35:08 SGT 2011
hostname n3600a
vif create multi v1 -b ip e0a e0b
ifconfig v1 `hostname`-v1 mediatype auto netmask 255.255.252.0 partner v2
route add default 10.1.16.254 1
routed on
options dns.enable on
options nis.enable off
savecore

n3600a> rdfile /etc/resolv.conf

#Auto-generated by setup Sat Jan 22 18:34:38 SGT 2011
nameserver 10.1.16.253

n3600a> dns info
DNS is enabled

DNS cannot be initialized

Re: SOLVED: Hostname lookup resolution error

fajarpri2

Wow.. this is amazing. It turns out that we must fill in "Domain name" in order DNS to work.

#Edited to activate dns by Fajar Sat Jan 22 18:35:08 SGT 2011
hostname n3600a
vif create multi v1 -b ip e0a e0b
ifconfig v1 `hostname`-v1 mediatype auto netmask 255.255.252.0 partner v2
route add default 10.1.16.254 1
routed on
options dns.domainname sg.ibm.com
options dns.enable on
options nis.enable off
savecore

n3600b> dns info
DNS is enabled

DNS caching is enabled

8 cache hits
1 cache miss
1 cache entry
0 expired entries
0 cache replacements

IP Address                                     State   Last Polled                  Avg RTT Calls  Errs
-------------------------------------------------------------------------------------------------------------
10.1.16.253                                    UP      Sat Jan 22 20:19:25 SGT 2011    5270     2     1

Default domain: sg.ibm.com
Search domains: sg.ibm.com ibm.com

Re: SOLVED: Hostname lookup resolution error

fajarpri2

THE DOCS SHOULD CLEARLY STATE THIS REQUIREMENT

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