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Posted to user@cassandra.apache.org by Kevin Burton <bu...@spinn3r.com> on 2015/10/08 04:59:26 UTC
Why can't nodetool status include a hostname?
I find it really frustrating that nodetool status doesn't include a hostname
Makes it harder to track down problems.
I realize it PRIMARILY uses the IP but perhaps cassandra.yml can include an
optional 'hostname' parameter that can be set by the user. OR have the box
itself include the hostname in gossip when it starts up.
I realize that hostname wouldn't be authoritative and that the IP must
still be shown but we could add another column for the hostname.
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RE: Why can't nodetool status include a hostname?
Posted by SE...@homedepot.com.
I ended up writing some of my own utilities and aliases to make output more useful for me (and reduce some typing, too). Resolving host names was a big one for me, too. Ip addresses are almost useless. Up time in seconds is useless.
The –r in nodetool is a nice addition, but I like the short host name instead.
hostname:/home/cassuser> cinfo
DSE Version : 4.7.0
Cassandra Ver : 2.1.5.469
Gossip active : true
Thrift active : true
Native Transport active: true
Load : 2.67 GB
Up since : Sun Sep 13 00:36:50 EDT 2015
Heap Memory (MB) : 3645.74 / 7987.25
Off Heap Memory (MB) : 203.93
Heap Used % : 45.64
Thrift Conns : 0
CQL Conns : 12
Topology : DC1 : RAC1
hostname:/home/cassuser> cstatus
Datacenter: DC1
===============
Status=Up/Down
/ State=Normal/Leaving/Joining/Moving
-- Address Load Tokens Owns Host ID Rack
UN cplinpys 8.47 GB 256 ? f498c0f9-0041-404c-979d-d1269c6a2287 RAC1
UN cplinpyr 2.67 GB 256 ? 397546c2-e229-482e-aa50-de367ab6add8 RAC1
UN cplinpyt 2.17 GB 256 ? f61da10c-c2c6-4a5a-8fdc-d2693f2239bc RAC1
Sean Durity – Lead Cassandra Admin
From: Gene [mailto:gh5046@gmail.com]
Sent: Thursday, October 08, 2015 12:43 PM
To: user@cassandra.apache.org
Subject: Re: Why can't nodetool status include a hostname?
Yeah, -r or --resolve-ip is what you're looking for.
Cassandra's nodetool command is kind of wonky. Inconsistent across functions (e.g. sometimes 'keyspace.columnfamily' other times 'keyspace columnfamily', pay attention to the character between the items), doesn't resolve IPs by default (while standard linux commands require you to pass something like -n to not resolve names), so on and so forth.
When in doubt run nodetool without specifying a command and it'll list all of the available options (another example of wonkiness, the 'help' argument is not listed in this output)
-Gene
On Thu, Oct 8, 2015 at 7:01 AM, Paulo Motta <pa...@gmail.com>> wrote:
Have you tried using the -r or --resolve-ip option?
2015-10-07 19:59 GMT-07:00 Kevin Burton <bu...@spinn3r.com>>:
I find it really frustrating that nodetool status doesn't include a hostname
Makes it harder to track down problems.
I realize it PRIMARILY uses the IP but perhaps cassandra.yml can include an optional 'hostname' parameter that can be set by the user. OR have the box itself include the hostname in gossip when it starts up.
I realize that hostname wouldn't be authoritative and that the IP must still be shown but we could add another column for the hostname.
--
We’re hiring if you know of any awesome Java Devops or Linux Operations Engineers!
Founder/CEO Spinn3r.com<http://Spinn3r.com>
Location: San Francisco, CA
blog: http://burtonator.wordpress.com
… or check out my Google+ profile<https://plus.google.com/102718274791889610666/posts>
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Re: Why can't nodetool status include a hostname?
Posted by Gene <gh...@gmail.com>.
Yeah, -r or --resolve-ip is what you're looking for.
Cassandra's nodetool command is kind of wonky. Inconsistent across
functions (e.g. sometimes 'keyspace.columnfamily' other times 'keyspace
columnfamily', pay attention to the character between the items), doesn't
resolve IPs by default (while standard linux commands require you to pass
something like -n to not resolve names), so on and so forth.
When in doubt run nodetool without specifying a command and it'll list all
of the available options (another example of wonkiness, the 'help' argument
is not listed in this output)
-Gene
On Thu, Oct 8, 2015 at 7:01 AM, Paulo Motta <pa...@gmail.com>
wrote:
> Have you tried using the -r or --resolve-ip option?
>
> 2015-10-07 19:59 GMT-07:00 Kevin Burton <bu...@spinn3r.com>:
>
>> I find it really frustrating that nodetool status doesn't include a
>> hostname
>>
>> Makes it harder to track down problems.
>>
>> I realize it PRIMARILY uses the IP but perhaps cassandra.yml can include
>> an optional 'hostname' parameter that can be set by the user. OR have the
>> box itself include the hostname in gossip when it starts up.
>>
>> I realize that hostname wouldn't be authoritative and that the IP must
>> still be shown but we could add another column for the hostname.
>>
>> --
>>
>> We’re hiring if you know of any awesome Java Devops or Linux Operations
>> Engineers!
>>
>> Founder/CEO Spinn3r.com
>> Location: *San Francisco, CA*
>> blog: http://burtonator.wordpress.com
>> … or check out my Google+ profile
>> <https://plus.google.com/102718274791889610666/posts>
>>
>>
>
Re: Why can't nodetool status include a hostname?
Posted by Paulo Motta <pa...@gmail.com>.
Have you tried using the -r or --resolve-ip option?
2015-10-07 19:59 GMT-07:00 Kevin Burton <bu...@spinn3r.com>:
> I find it really frustrating that nodetool status doesn't include a
> hostname
>
> Makes it harder to track down problems.
>
> I realize it PRIMARILY uses the IP but perhaps cassandra.yml can include
> an optional 'hostname' parameter that can be set by the user. OR have the
> box itself include the hostname in gossip when it starts up.
>
> I realize that hostname wouldn't be authoritative and that the IP must
> still be shown but we could add another column for the hostname.
>
> --
>
> We’re hiring if you know of any awesome Java Devops or Linux Operations
> Engineers!
>
> Founder/CEO Spinn3r.com
> Location: *San Francisco, CA*
> blog: http://burtonator.wordpress.com
> … or check out my Google+ profile
> <https://plus.google.com/102718274791889610666/posts>
>
>