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Posted to user@cassandra.apache.org by Maxim Potekhin <po...@bnl.gov> on 2012/01/06 22:22:24 UTC
How to find out when a nodetool operation has ended?
Suppose I start a repair on one or a few nodes in my cluster,
from an interactive machine in the office, and leave for the day
(which is a very realistic scenario imho).
Is there a way to know, from a remote machine, when a particular
action, such as compaction or repair, has been finished?
I figured that compaction stats can be mum at times, thus
it's not a reliable indicator.
Many thanks,
Maxim
Re: How to find out when a nodetool operation has ended?
Posted by Edward Capriolo <ed...@gmail.com>.
Cassandra would not have access to 'wall' as was is very unix-ish and
Cassandra is written in java so it has to be highly portable across
operating systems.
On Sat, Jan 7, 2012 at 3:01 PM, R. Verlangen <ro...@us2.nl> wrote:
> " The repair will continue even if you ctrl+c nodetool, it runs on the
> server not the client."
>
> Hmm, didn't know that. Maybe a tweak for the nodetool that just displays a
> message after starting: "Started with ..." and some kind of notication
> (with "wall") when it's done?
>
> 2012/1/7 aaron morton <aa...@thelastpickle.com>
>
>> The repair will continue even if you ctrl+c nodetool, it runs on the
>> server not the client.
>>
>> Aside from using ops centre you can also look at TP Stats to see when
>> there is nothing left in the AntiEntropyStage or look for a log messages
>> from the StorageService that says…
>>
>> "Repair command #{} completed successfully"
>>
>> Cheers
>>
>> -----------------
>> Aaron Morton
>> Freelance Developer
>> @aaronmorton
>> http://www.thelastpickle.com
>>
>> On 7/01/2012, at 12:32 PM, Maxim Potekhin wrote:
>>
>> Thanks, so I take it there is no solution outside of Opcenter.
>>
>> I mean of course I can redirect the output, with additional timestamps if
>> needed,
>> to a log file -- which I can access remotely. I just thought there would
>> be some "status"
>> command by chance, to tell me what maintenance the node is doing. Too bad
>> there is not!
>>
>> Maxim
>>
>>
>> On 1/6/2012 5:40 PM, R. Verlangen wrote:
>>
>> You might consider:
>>
>> - installing DataStax OpsCenter (
>> http://www.datastax.com/products/opscenter )
>>
>> - starting the repair in a linux screen (so you can attach to the screen
>> from another location)
>>
>>
>>
>>
>>
>
Re: How to find out when a nodetool operation has ended?
Posted by "R. Verlangen" <ro...@us2.nl>.
" The repair will continue even if you ctrl+c nodetool, it runs on the
server not the client."
Hmm, didn't know that. Maybe a tweak for the nodetool that just displays a
message after starting: "Started with ..." and some kind of notication
(with "wall") when it's done?
2012/1/7 aaron morton <aa...@thelastpickle.com>
> The repair will continue even if you ctrl+c nodetool, it runs on the
> server not the client.
>
> Aside from using ops centre you can also look at TP Stats to see when
> there is nothing left in the AntiEntropyStage or look for a log messages
> from the StorageService that says…
>
> "Repair command #{} completed successfully"
>
> Cheers
>
> -----------------
> Aaron Morton
> Freelance Developer
> @aaronmorton
> http://www.thelastpickle.com
>
> On 7/01/2012, at 12:32 PM, Maxim Potekhin wrote:
>
> Thanks, so I take it there is no solution outside of Opcenter.
>
> I mean of course I can redirect the output, with additional timestamps if
> needed,
> to a log file -- which I can access remotely. I just thought there would
> be some "status"
> command by chance, to tell me what maintenance the node is doing. Too bad
> there is not!
>
> Maxim
>
>
> On 1/6/2012 5:40 PM, R. Verlangen wrote:
>
> You might consider:
>
> - installing DataStax OpsCenter (
> http://www.datastax.com/products/opscenter )
>
> - starting the repair in a linux screen (so you can attach to the screen
> from another location)
>
>
>
>
>
Re: How to find out when a nodetool operation has ended?
Posted by aaron morton <aa...@thelastpickle.com>.
The repair will continue even if you ctrl+c nodetool, it runs on the server not the client.
Aside from using ops centre you can also look at TP Stats to see when there is nothing left in the AntiEntropyStage or look for a log messages from the StorageService that says…
"Repair command #{} completed successfully"
Cheers
-----------------
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com
On 7/01/2012, at 12:32 PM, Maxim Potekhin wrote:
> Thanks, so I take it there is no solution outside of Opcenter.
>
> I mean of course I can redirect the output, with additional timestamps if needed,
> to a log file -- which I can access remotely. I just thought there would be some "status"
> command by chance, to tell me what maintenance the node is doing. Too bad
> there is not!
>
> Maxim
>
>
> On 1/6/2012 5:40 PM, R. Verlangen wrote:
>> You might consider:
>> - installing DataStax OpsCenter ( http://www.datastax.com/products/opscenter )
>> - starting the repair in a linux screen (so you can attach to the screen from another location)
>>
>
Re: How to find out when a nodetool operation has ended?
Posted by Maxim Potekhin <po...@bnl.gov>.
Thanks, so I take it there is no solution outside of Opcenter.
I mean of course I can redirect the output, with additional timestamps
if needed,
to a log file -- which I can access remotely. I just thought there would
be some "status"
command by chance, to tell me what maintenance the node is doing. Too bad
there is not!
Maxim
On 1/6/2012 5:40 PM, R. Verlangen wrote:
> You might consider:
> - installing DataStax OpsCenter (
> http://www.datastax.com/products/opscenter )
> - starting the repair in a linux screen (so you can attach to the
> screen from another location)
>
Re: How to find out when a nodetool operation has ended?
Posted by "R. Verlangen" <ro...@us2.nl>.
You might consider:
- installing DataStax OpsCenter ( http://www.datastax.com/products/opscenter
)
- starting the repair in a linux screen (so you can attach to the screen
from another location)
I prefer the OpsCener.
2012/1/6 Maxim Potekhin <po...@bnl.gov>
> Suppose I start a repair on one or a few nodes in my cluster,
> from an interactive machine in the office, and leave for the day
> (which is a very realistic scenario imho).
>
> Is there a way to know, from a remote machine, when a particular
> action, such as compaction or repair, has been finished?
>
> I figured that compaction stats can be mum at times, thus
> it's not a reliable indicator.
>
> Many thanks,
>
> Maxim
>
>