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sumccarthy
3 Posts
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July 5th, 2015 19:00
dns query gives inconsistent results
when I run .server_config PTR query it can succeed or fail for same IP address.
We have 3 DNS servers defined and I wondered how the celerra uses them, does it go to the first one every time or is it a random selection.
It makes no sense that a query can succeed , then fail see below eg
$ .server_config server_2 -v "dns query PTR=10.235.232.16"
server_2 : commands processed: 1
command(s) succeeded
output is complete
1436147816: LIB: 6: 10.235.232.16
1436147816: LIB: 6: Type:PTR TTL=86400 s dataCount:1
1436147816: LIB: 6: ora0005-nas.telecom.co.nz
1436147816: LIB: 6: ---
1436147816: ADMIN: 6: Command succeeded: dns query PTR=10.235.232.16
$ .server_config server_2 -v "dns query PTR=10.235.232.16"
server_2 : commands processed: 1
output is complete
1436149924: ADMIN: 3: Command failed: dns query PTR=10.235.232.16
Error 4020: server_2 : failed to complete command
Can anyone explain this behaviour please?
Rainer_EMC
6 Operator
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8645 Posts
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Posted July 6th, 2015 11:00
Round-Robin I guess
sumccarthy
3 Posts
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Posted July 6th, 2015 12:00
Thanks Rainer. So if it is round robin, I guess I need to know if there is a way to force the query to a particular DNS server, so I can establish which one is working correctly.
I need this to work correctly to implement netgroups. which I need to get working before I can do a code upgrade
problem being that the .server_config command seems to be undocumented
Rainer_EMC
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8645 Posts
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Posted July 7th, 2015 02:00
You could just use nslookup on the control station
sumccarthy
3 Posts
303
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Posted July 7th, 2015 13:00
that doesn't help get the netgroup working
Rainer_EMC
6 Operator
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8645 Posts
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Posted July 8th, 2015 08:00
I thought you wanted to check which DNS servers responds which result to a query
Jyothi_P_Bharat
317 Posts
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Posted July 6th, 2015 00:00
Hi Sumccarthy,
Could you please have a look on below mentioned links:
Re: Unmounted iSCSI LUNs on a Celerra CX700
25183
Thanks
Jyothi