[erlang-questions] receiving pang from net_adm:ping/1 even though net_adm:names/0 shows the other node
Sun Apr 19 19:30:24 CEST 2009
On Sun, Apr 19, 2009 at 12:18 PM, Per Melin <per.melin@REDACTED> wrote:
> On Sun, Apr 19, 2009 at 7:03 PM, Dennis Byrne <dennisbyrne@REDACTED> wrote:
>> $ erl -name bar -setcookie c
>> (bar@REDACTED)1> net_adm:names().
> nxdomain means non-existing domain, which I guess means that your
> machine's DNS name isn't actually 207.hyperband.com. Can that be
I thought this as well but if you will notice though, the bar node has
no problem pinging itself using this domain. You are correct though
because I cannot even ping the machine using a standard ping outside
$ ping 207.hyperband.com
ping: cannot resolve 207.hyperband.com: Unknown host
One more thing to note. In syslog I can see that my ISP is setting my
hostname to 126.96.36.199.ip.anet.com . I can ping my machine
(outside of erlang) using this:
$ ping 188.8.131.52.ip.anet.com
PING 184.108.40.206.ip.anet.com (220.127.116.11): 56 data bytes
64 bytes from 18.104.22.168: icmp_seq=0 ttl=64 time=0.038 ms
But ping fails using this hostname within Erlang.
> Try starting both nodes with -sname. That doesn't require a valid hostname.
This is what I did in the original post, starting the nodes with $ erl
-sname foo -setcookie c and $ erl -sname bar -setcookie c .
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