New cluster shows IP addresses instead of Hostnames on Accumulo Monitor

["Terry P." <te...@gmail.com>]

Greetings folks,
I've just stood up a new Accumulo 1.4.2 cluster on a customer's
infrastructure where they are providing all core services such as DNS, NTP,
etc.

After starting the cluster for the first time and checking the monitor, I
find that all the Tablet Servers appear in the Server column as IP
addresses, not as hostnames, even though all configuration has been done
using hostnames only and DNS is in place and functioning.  No servers have
a custom /etc/hosts file with all hosts in it; all names are being resolved
via DNS.

The very same base machine template works fine in another environment, so
I'm concerned it's something beyond my control (as in DNS core services
provided by the site).

Any ideas?

Many thanks in advance for your help.

- Terry

Re: New cluster shows IP addresses instead of Hostnames on Accumulo Monitor

["Terry P." <te...@gmail.com>]

Nope, grrrr.  I'm going to get the kickstart spec for our "minimized base"
changed right NOW to include host, dig, and nslookup!

Good news is I got on the horn with the SysAdmin and looked at the console
with him and found he had copied a zone file from the Test String and had a
server name incorrect in the Ops String.  So good news is Test worked fine,
bad news is I need to re-init Accumulo on Ops (but no biggie).

Alex thanks for your help. My gut said it was reverse DNS lookup, but when
I asked I was told "it's all there."  Fixed now, thanks again!



On Tue, Oct 8, 2013 at 3:26 PM, Alex Moundalexis <al...@cloudera.com> wrote:

> Do you have access to either of the following utilities?
>
> host <ip>
> dig -x <ip>
>
>
> On Tue, Oct 8, 2013 at 4:02 PM, Terry P. <te...@gmail.com> wrote:
>
>> Hi Alex,
>> I was told by the SysAdmin that yes, they are, as I requested that all
>> servers be in DNS with reverse lookup as well.
>>
>> How can I test?  I would normally use nslookup, but our hardened servers
>> do not include it ...
>>
>>
>>
>> On Tue, Oct 8, 2013 at 2:57 PM, Alex Moundalexis <al...@cloudera.com>wrote:
>>
>>> Are there proper reverse DNS records in place?
>>>
>>>
>>>
>>> On Tue, Oct 8, 2013 at 3:43 PM, Terry P. <te...@gmail.com> wrote:
>>>
>>>> Greetings folks,
>>>> I've just stood up a new Accumulo 1.4.2 cluster on a customer's
>>>> infrastructure where they are providing all core services such as DNS, NTP,
>>>> etc.
>>>>
>>>> After starting the cluster for the first time and checking the monitor,
>>>> I find that all the Tablet Servers appear in the Server column as IP
>>>> addresses, not as hostnames, even though all configuration has been done
>>>> using hostnames only and DNS is in place and functioning.  No servers have
>>>> a custom /etc/hosts file with all hosts in it; all names are being resolved
>>>> via DNS.
>>>>
>>>> The very same base machine template works fine in another environment,
>>>> so I'm concerned it's something beyond my control (as in DNS core services
>>>> provided by the site).
>>>>
>>>> Any ideas?
>>>>
>>>> Many thanks in advance for your help.
>>>>
>>>> - Terry
>>>>
>>>
>>>
>>>
>>>
>>>
>>
>
>
> --
> Alex Moundalexis
> Solutions Engineer
> Cloudera, Inc.
> Twitter: @technmsg
>

Re: New cluster shows IP addresses instead of Hostnames on Accumulo Monitor

[Alex Moundalexis <al...@cloudera.com>]

Do you have access to either of the following utilities?

host <ip>
dig -x <ip>


On Tue, Oct 8, 2013 at 4:02 PM, Terry P. <te...@gmail.com> wrote:

> Hi Alex,
> I was told by the SysAdmin that yes, they are, as I requested that all
> servers be in DNS with reverse lookup as well.
>
> How can I test?  I would normally use nslookup, but our hardened servers
> do not include it ...
>
>
>
> On Tue, Oct 8, 2013 at 2:57 PM, Alex Moundalexis <al...@cloudera.com>wrote:
>
>> Are there proper reverse DNS records in place?
>>
>>
>>
>> On Tue, Oct 8, 2013 at 3:43 PM, Terry P. <te...@gmail.com> wrote:
>>
>>> Greetings folks,
>>> I've just stood up a new Accumulo 1.4.2 cluster on a customer's
>>> infrastructure where they are providing all core services such as DNS, NTP,
>>> etc.
>>>
>>> After starting the cluster for the first time and checking the monitor,
>>> I find that all the Tablet Servers appear in the Server column as IP
>>> addresses, not as hostnames, even though all configuration has been done
>>> using hostnames only and DNS is in place and functioning.  No servers have
>>> a custom /etc/hosts file with all hosts in it; all names are being resolved
>>> via DNS.
>>>
>>> The very same base machine template works fine in another environment,
>>> so I'm concerned it's something beyond my control (as in DNS core services
>>> provided by the site).
>>>
>>> Any ideas?
>>>
>>> Many thanks in advance for your help.
>>>
>>> - Terry
>>>
>>
>>
>>
>>
>>
>


-- 
Alex Moundalexis
Solutions Engineer
Cloudera, Inc.
Twitter: @technmsg

Re: New cluster shows IP addresses instead of Hostnames on Accumulo Monitor

["Terry P." <te...@gmail.com>]

Hi Alex,
I was told by the SysAdmin that yes, they are, as I requested that all
servers be in DNS with reverse lookup as well.

How can I test?  I would normally use nslookup, but our hardened servers do
not include it ...



On Tue, Oct 8, 2013 at 2:57 PM, Alex Moundalexis <al...@cloudera.com> wrote:

> Are there proper reverse DNS records in place?
>
>
>
> On Tue, Oct 8, 2013 at 3:43 PM, Terry P. <te...@gmail.com> wrote:
>
>> Greetings folks,
>> I've just stood up a new Accumulo 1.4.2 cluster on a customer's
>> infrastructure where they are providing all core services such as DNS, NTP,
>> etc.
>>
>> After starting the cluster for the first time and checking the monitor, I
>> find that all the Tablet Servers appear in the Server column as IP
>> addresses, not as hostnames, even though all configuration has been done
>> using hostnames only and DNS is in place and functioning.  No servers have
>> a custom /etc/hosts file with all hosts in it; all names are being resolved
>> via DNS.
>>
>> The very same base machine template works fine in another environment, so
>> I'm concerned it's something beyond my control (as in DNS core services
>> provided by the site).
>>
>> Any ideas?
>>
>> Many thanks in advance for your help.
>>
>> - Terry
>>
>
>
>
>
>

Re: New cluster shows IP addresses instead of Hostnames on Accumulo Monitor

[Alex Moundalexis <al...@cloudera.com>]

Are there proper reverse DNS records in place?


On Tue, Oct 8, 2013 at 3:43 PM, Terry P. <te...@gmail.com> wrote:

> Greetings folks,
> I've just stood up a new Accumulo 1.4.2 cluster on a customer's
> infrastructure where they are providing all core services such as DNS, NTP,
> etc.
>
> After starting the cluster for the first time and checking the monitor, I
> find that all the Tablet Servers appear in the Server column as IP
> addresses, not as hostnames, even though all configuration has been done
> using hostnames only and DNS is in place and functioning.  No servers have
> a custom /etc/hosts file with all hosts in it; all names are being resolved
> via DNS.
>
> The very same base machine template works fine in another environment, so
> I'm concerned it's something beyond my control (as in DNS core services
> provided by the site).
>
> Any ideas?
>
> Many thanks in advance for your help.
>
> - Terry
>