# Decommission of multiple nodes
**URL:** https://discuss.elastic.co/t/decommission-of-multiple-nodes/21036
**Category:** Elasticsearch
**Created:** [December 2, 2014, 4:01pm UTC](https://discuss.elastic.co/t/decommission-of-multiple-nodes/21036 "2014-12-02T16:01:14Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@Noam\_Gazit](https://discuss.elastic.co/u/Noam_Gazit)
#### Post date: [December 2, 2014, 4:01pm UTC](https://discuss.elastic.co/t/decommission-of-multiple-nodes/21036/1 "2014-12-02T16:01:14Z")
Hi,
I wanted to reduce my cluster size by 3 data nodes (from 27 to 24).
I issued 3 decommission API calls one after the other and saw their shards
start moving.
I waited for all the shards to relocate, but when I checked to make sure
they can safely be removed I found out that they have new shards on them.
Is there a limit to the number of nodes that can be decommissioned at the
same time?
Is there a timeout for the decommission definition for a node?
Anything else?
Thanks for the help,
Noam
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### Author:  [@warkolm](https://discuss.elastic.co/u/warkolm)
#### Post date: [December 2, 2014, 9:00pm UTC](https://discuss.elastic.co/t/decommission-of-multiple-nodes/21036/2 "2014-12-02T21:00:16Z")
What do you mean by decommission, there is no API call for that, unless you
meant shutdown?
The easiest way would be to power down one node at a time, waiting for
things to rebalance before shutting another down.
On 3 December 2014 at 03:01, Noam Gazit [noam@totango.com](mailto:noam@totango.com) wrote:
> Hi,
>
> I wanted to reduce my cluster size by 3 data nodes (from 27 to 24).
> I issued 3 decommission API calls one after the other and saw their shards
> start moving.
> I waited for all the shards to relocate, but when I checked to make sure
> they can safely be removed I found out that they have new shards on them.
>
> Is there a limit to the number of nodes that can be decommissioned at the
> same time?
> Is there a timeout for the decommission definition for a node?
> Anything else?
>
> Thanks for the help,
> Noam
>
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### Author:  [@nik9000](https://discuss.elastic.co/u/nik9000)
#### Post date: [December 2, 2014, 9:05pm UTC](https://discuss.elastic.co/t/decommission-of-multiple-nodes/21036/3 "2014-12-02T21:05:24Z")
If you mean allocation filtering (like
cluster.routing.allocation.exclude.\_ip) then you just need to specify all
three ip addresses with commas between them.
Nik
On Tue, Dec 2, 2014 at 4:00 PM, Mark Walkom [markwalkom@gmail.com](mailto:markwalkom@gmail.com) wrote:
> What do you mean by decommission, there is no API call for that, unless
> you meant shutdown?
>
> The easiest way would be to power down one node at a time, waiting for
> things to rebalance before shutting another down.
>
> On 3 December 2014 at 03:01, Noam Gazit [noam@totango.com](mailto:noam@totango.com) wrote:
>
> > Hi,
> >
> > I wanted to reduce my cluster size by 3 data nodes (from 27 to 24).
> > I issued 3 decommission API calls one after the other and saw their
> > shards start moving.
> > I waited for all the shards to relocate, but when I checked to make sure
> > they can safely be removed I found out that they have new shards on them.
> >
> > Is there a limit to the number of nodes that can be decommissioned at the
> > same time?
> > Is there a timeout for the decommission definition for a node?
> > Anything else?
> >
> > Thanks for the help,
> > Noam
> >
> > --
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> .
>
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### Author:  [@Ye\_D](https://discuss.elastic.co/u/Ye_D)
#### Post date: [December 17, 2014, 11:03pm UTC](https://discuss.elastic.co/t/decommission-of-multiple-nodes/21036/4 "2014-12-17T23:03:36Z")
Hi Nik,
I found the that I am not able to do decommissioning over multiple nodes.
I can do decommissioning over a single node.
These cmds below work perfectly for my ES cluster:
"cluster.routing.allocation.exclude.\_name": "node-1"
"cluster.routing.allocation.exclude.\_name": "node-2"
"cluster.routing.allocation.exclude.\_ip": "ip1"
"cluster.routing.allocation.exclude.\_ip": "ip2"
But none of these cmds below has effect for my ES cluster:
"cluster.routing.allocation.exclude.\_name": "node-1,node-2"
"cluster.routing.allocation.exclude.\_name": ["node-1", "node-2"]
"cluster.routing.allocation.exclude.\_ip": "ip1,ip2"
"cluster.routing.allocation.exclude.\_ip": "ip1, ip2"
I also notice that extra spaces for "\_name" or "\_ip" field cause the cmd to
fail (no effect).
For example, none of these cmds below works.
"cluster.routing.allocation.exclude.\_ip": " ip1 "
"cluster.routing.allocation.exclude.\_name": "node-1 "
I am running this version of ES on Ubuntu 14.04:
> elasticsearch -v
> Version: 1.4.0, Build: bc94bd8/2014-11-05T14:26:12Z, JVM: 1.8.0\_25
I checked release notes of ES 1.4.1 and 1.4.2, and I didn't find some bug
fixing notes for this "decommissioning over multiple nodes" function.
Is this a bug? Or, I omit something important?
Regards,
Ye
On Tuesday, December 2, 2014 4:07:15 PM UTC-5, Nikolas Everett wrote:
> If you mean allocation filtering (like
> cluster.routing.allocation.exclude.\_ip) then you just need to specify all
> three ip addresses with commas between them.
>
> Nik
>
> On Tue, Dec 2, 2014 at 4:00 PM, Mark Walkom \<[markw...@gmail.com](mailto:markw...@gmail.com)
> \\> wrote:
>
> > What do you mean by decommission, there is no API call for that, unless
> > you meant shutdown?
> >
> > The easiest way would be to power down one node at a time, waiting for
> > things to rebalance before shutting another down.
> >
> > On 3 December 2014 at 03:01, Noam Gazit \<[no...@totango.com](mailto:no...@totango.com) \\>
> > wrote:
> >
> > > Hi,
> > >
> > > I wanted to reduce my cluster size by 3 data nodes (from 27 to 24).
> > > I issued 3 decommission API calls one after the other and saw their
> > > shards start moving.
> > > I waited for all the shards to relocate, but when I checked to make sure
> > > they can safely be removed I found out that they have new shards on them.
> > >
> > > Is there a limit to the number of nodes that can be decommissioned at
> > > the same time?
> > > Is there a timeout for the decommission definition for a node?
> > > Anything else?
> > >
> > > Thanks for the help,
> > > Noam
> > >
> > > --
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> > > .
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> >
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> >
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### Author:  [@nik9000](https://discuss.elastic.co/u/nik9000)
#### Post date: [December 17, 2014, 11:10pm UTC](https://discuss.elastic.co/t/decommission-of-multiple-nodes/21036/5 "2014-12-17T23:10:49Z")
On Wed, Dec 17, 2014 at 6:03 PM, Ye D [ye@volarvideo.com](mailto:ye@volarvideo.com) wrote:
> "cluster.routing.allocation.exclude.\_ip": "ip1, ip2"
I use this one and I'm pretty sure its worked for me in the past.
Nik
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 12:43am UTC](https://discuss.elastic.co/t/decommission-of-multiple-nodes/21036/6 "2017-07-06T00:43:03Z")