So, ping and traceroute won't really check what you need to check for DNS connectivity; that's access to the IP over port 53.
DNS check will test round trip time to the DNS server by doing a simple DNS lookup of example.domain.com and reports the time it took for that request.
"Operation timed out" means either that the DNS query couldn't be made or it took longer than the DNS timeout you have set. Try increasing the timeout from 2 seconds to 10 seconds and retry the check. A packet trace will also be useful to see why/how the requests are failing.
-----Original Message----- From: toasters-bounces@teaparty.net toasters-bounces@teaparty.net On Behalf Of Scott Classen Sent: Thursday, April 25, 2019 2:48 PM To: toasters@teaparty.net Subject: DNS woes
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Hello,
Can anyone help me with this before I open a case with NetApp?
dns check on one of my sververs fails (see below where I get an “Operation timed out” error), but I can ping and traceroute from the vserver to the gateway and the DNS servers.
sibyls2::*> dns show -vserver als-enable-ds1
Vserver: als-enable-ds1 Domains: als.lbl.gov, lbl.gov Name Servers: 131.243.5.1, 131.243.5.2 Timeout (secs): 2 Maximum Attempts: 1 Is TLD Query Enabled?: true Require Source and Reply IPs to Match: true Require Packet Queries to Match: true
sibyls2::*> dns check -vserver als-enable-ds1 Name Server Vserver Name Server Status Status Details ------------- --------------- ------------ -------------------------- als-enable-ds1 down Operation timed out. 131.243.5.1 als-enable-ds1 down Operation timed out. 131.243.5.2 2 entries were displayed.
sibyls2::*> ping -node sibyls2-03 -destination 131.243.78.1 -vserver als-enable-ds1 -wait-response 2000 -count 3 131.243.78.1 is alive
sibyls2::*> ping -node sibyls2-03 -destination 131.243.5.1 -vserver als-enable-ds1 -wait-response 2000 -count 3 131.243.5.1 is alive
sibyls2::*> ping -node sibyls2-03 -destination 131.243.5.2 -vserver als-enable-ds1 -wait-response 2000 -count 3 131.243.5.2 is alive
sibyls2::*> ping -node sibyls2-04 -destination 131.243.78.1 -vserver als-enable-ds1 -wait-response 2000 -count 3 131.243.78.1 is alive
sibyls2::*> ping -node sibyls2-04 -destination 131.243.5.1 -vserver als-enable-ds1 -wait-response 2000 -count 3 131.243.5.1 is alive
sibyls2::*> ping -node sibyls2-04 -destination 131.243.5.2 -vserver als-enable-ds1 -wait-response 2000 -count 3 131.243.5.2 is alive
sibyls2::*> traceroute -node sibyls2-03 -vserver als-enable-ds1 -destination 131.243.78.1 traceroute to 131.243.78.1 (131.243.78.1), 64 hops max, 40 byte packets 1 vlan3078.irals.lbl.gov (131.243.78.1) 0.521 ms * 0.484 ms
sibyls2::*> traceroute -node sibyls2-03 -vserver als-enable-ds1 -destination 131.243.5.1 traceroute to 131.243.5.1 (131.243.5.1), 64 hops max, 40 byte packets 1 vlan3078.irals.lbl.gov (131.243.78.1) 0.478 ms 0.369 ms 0.376 ms 2 xe-2-2-1.er1-n1.lbl.gov (131.243.244.140) 0.411 ms 0.391 ms 0.330 ms 3 t5-4.ir1-n1.lbl.gov (131.243.244.131) 0.796 ms 1.365 ms 0.524 ms 4 ns.lbl.gov (131.243.5.1) 0.402 ms 0.765 ms 0.936 ms
sibyls2::*> traceroute -node sibyls2-03 -vserver als-enable-ds1 -destination 131.243.5.2 traceroute to 131.243.5.2 (131.243.5.2), 64 hops max, 40 byte packets 1 vlan3078.irals.lbl.gov (131.243.78.1) 0.446 ms 0.409 ms 0.375 ms 2 nsals.lbl.gov (131.243.5.2) 0.649 ms 1.047 ms 1.080 ms
sibyls2::*> traceroute -node sibyls2-04 -vserver als-enable-ds1 -destination 131.243.78.1 traceroute to 131.243.78.1 (131.243.78.1), 64 hops max, 40 byte packets 1 vlan3078.irals.lbl.gov (131.243.78.1) 0.443 ms * 0.502 ms
sibyls2::*> traceroute -node sibyls2-04 -vserver als-enable-ds1 -destination 131.243.5.1 traceroute to 131.243.5.1 (131.243.5.1), 64 hops max, 40 byte packets 1 vlan3078.irals.lbl.gov (131.243.78.1) 0.515 ms 0.402 ms 0.388 ms 2 xe-2-2-1.er1-n1.lbl.gov (131.243.244.140) 0.513 ms 0.344 ms 0.326 ms 3 t5-4.ir3-n2.lbl.gov (131.243.244.129) 1.737 ms 1.618 ms t5-4.ir4-n3.lbl.gov (131.243.244.133) 0.582 ms 4 ns.lbl.gov (131.243.5.1) 0.898 ms 1.213 ms 0.517 ms
sibyls2::*> traceroute -node sibyls2-04 -vserver als-enable-ds1 -destination 131.243.5.2 traceroute to 131.243.5.2 (131.243.5.2), 64 hops max, 40 byte packets 1 vlan3078.irals.lbl.gov (131.243.78.1) 2.075 ms 1.451 ms 0.403 ms 2 nsals.lbl.gov (131.243.5.2) 1.198 ms 0.410 ms 0.911 ms _______________________________________________ Toasters mailing list Toasters@teaparty.net http://www.teaparty.net/mailman/listinfo/toasters