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Posted to user@cassandra.apache.org by Luigi Tagliamonte <lu...@sysdig.com> on 2017/04/27 23:37:15 UTC
[Question] Automated cluster cleanup
Hello Cassandra users,
my cluster is getting bigger and I was looking into automating some tedious
operations like the node cleanup after adding a new node to the cluster.
I gave a quick search and I didn't find any good available option, so I
decided to look into the JMX interface (In the storage service, I found the
method: forceKeyspaceCleanup that seems a good candidate), before going
hardcore with SSH+nodetool sessions.
I was wondering if somebody here wants to share his experiences about this
task, and what do you think about JMX approach instead of the SSH one.
Thank you.
--
Luigi
---
“The only way to get smarter is by playing a smarter opponent.”
Re: [Question] Automated cluster cleanup
Posted by Luigi Tagliamonte <lu...@sysdig.com>.
Hello Ben,
thank you for sharing the cassandra-reaper reposiroty and about the
security advice.
Regards
L
On Thu, Apr 27, 2017 at 4:54 PM, Ben Bromhead <be...@instaclustr.com> wrote:
> Hi Luigi
>
> Under the hood, nodetool is actually just a command line wrapper around
> certain JMX calls. If you are looking to automate some more of commonplace
> nodetool actions, have a look at the nodetool source and it will show
> exactly what JMX calls (and parameters) are being passed.
>
> One thing to keep in mind with JMX, is it does allow a remote user to do
> some scary things to Cassandra and it has included remote code execution
> vulns. So ensure you lock down JMX thoroughly (password/username auth,
> certification auth, fw rules etc).
>
> For the other most common management, repairs, check out Cassandra reaper
> https://github.com/thelastpickle/cassandra-reaper.
>
> Ben
>
> On Thu, 27 Apr 2017 at 16:37 Luigi Tagliamonte <lu...@sysdig.com> wrote:
>
>> Hello Cassandra users,
>> my cluster is getting bigger and I was looking into automating some
>> tedious operations like the node cleanup after adding a new node to the
>> cluster.
>>
>> I gave a quick search and I didn't find any good available option, so I
>> decided to look into the JMX interface (In the storage service, I found the
>> method: forceKeyspaceCleanup that seems a good candidate), before going
>> hardcore with SSH+nodetool sessions.
>>
>> I was wondering if somebody here wants to share his experiences about
>> this task, and what do you think about JMX approach instead of the SSH one.
>>
>> Thank you.
>>
>> --
>> Luigi
>> ---
>> “The only way to get smarter is by playing a smarter opponent.”
>>
> --
> Ben Bromhead
> CTO | Instaclustr <https://www.instaclustr.com/>
> +1 650 284 9692 <(650)%20284-9692>
> Managed Cassandra / Spark on AWS, Azure and Softlayer
>
--
Luigi
---
“The only way to get smarter is by playing a smarter opponent.”
Re: [Question] Automated cluster cleanup
Posted by Ben Bromhead <be...@instaclustr.com>.
Hi Luigi
Under the hood, nodetool is actually just a command line wrapper around
certain JMX calls. If you are looking to automate some more of commonplace
nodetool actions, have a look at the nodetool source and it will show
exactly what JMX calls (and parameters) are being passed.
One thing to keep in mind with JMX, is it does allow a remote user to do
some scary things to Cassandra and it has included remote code execution
vulns. So ensure you lock down JMX thoroughly (password/username auth,
certification auth, fw rules etc).
For the other most common management, repairs, check out Cassandra reaper
https://github.com/thelastpickle/cassandra-reaper.
Ben
On Thu, 27 Apr 2017 at 16:37 Luigi Tagliamonte <lu...@sysdig.com> wrote:
> Hello Cassandra users,
> my cluster is getting bigger and I was looking into automating some
> tedious operations like the node cleanup after adding a new node to the
> cluster.
>
> I gave a quick search and I didn't find any good available option, so I
> decided to look into the JMX interface (In the storage service, I found the
> method: forceKeyspaceCleanup that seems a good candidate), before going
> hardcore with SSH+nodetool sessions.
>
> I was wondering if somebody here wants to share his experiences about this
> task, and what do you think about JMX approach instead of the SSH one.
>
> Thank you.
>
> --
> Luigi
> ---
> “The only way to get smarter is by playing a smarter opponent.”
>
--
Ben Bromhead
CTO | Instaclustr <https://www.instaclustr.com/>
+1 650 284 9692
Managed Cassandra / Spark on AWS, Azure and Softlayer