# Windows 2008 ES Cluster Issue

**URL:** <https://discuss.elastic.co/t/windows-2008-es-cluster-issue/4606>\
**Category:** Elasticsearch\
**Created:** [June 10, 2011, 10:20pm UTC](https://discuss.elastic.co/t/windows-2008-es-cluster-issue/4606 "2011-06-10T22:20:58Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Katrina\_K](https://avatars.discourse-cdn.com/v4/letter/k/f6c823/32.png) [@Katrina\_K](https://discuss.elastic.co/u/Katrina_K)\
**Post date:** [June 10, 2011, 10:20pm UTC](https://discuss.elastic.co/t/windows-2008-es-cluster-issue/4606/1 "2011-06-10T22:20:58Z")

</div>

Hi,

We have four Servers in Our ES Cluster. In one of the server we saw a  
memory strange situation. here is my server detailed Specification

ES Version: 16.0

Cluster Details  
No of Data Nodes : 3 (Node1,2&3)  
No of No Data Noode: 1 (Node 4)

Index Details  
number\_of\_shards : 6  
number\_of\_replicas : 1

Server Details:

1. Node 1, 3 & 4 installed OS is Windows 2003 Server Enterprise  
edition R2 64 bit SP2.
2. Node 2 installed OS is Windows 2008 Server Enterprise edition 64  
bit SP2

Node 1 & 2 Configuration  
Pysical RAM - 48 GB  
ES Allocated RAM - 20 GB

Node 3 Configuration  
Pysical RAM - 24 GB  
ES Allocated RAM - 20 GB

Node 4 Configuration  
Pysical RAM - 24 GB  
ES Allocated RAM - 10 GB

Congig.yml Settings:  
"network :  
host : 10.41.23.4  
gateway:  
type: fs  
fs:  
location: \10.41.23.6\ElasticSearchGateway  
indices:  
memory:  
index\_buffer\_size : 20%  
index:  
gateway:  
snapshot\_on\_close: false  
cluster:  
name: Dragon  
http:  
enabled: false  
index:  
number\_of\_shards : 6  
number\_of\_replicas : 1  
bootstrap:  
mlockall : true"

Memory Settings:  
"if "%ES\_MIN\_MEM%" == "" (  
set ES\_MIN\_MEM=20g  
)

if "%ES\_MAX\_MEM%" == "" (  
set ES\_MAX\_MEM=20g  
)"

Node 2 Server(windows 2008) Elastic Search memory is increasing(full  
usage) frequently compare to other servers (Windows 2003 Server). so  
the cluster performance geeting slow for every time.

please help me how to avoid this issue  
Is there any configuration item I'm missing?

Thanks,  
Katrinaa

---

<div class="post-metadata">

**Author:** ![kimchy](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/kimchy/32/44952_2.png) [@kimchy](https://discuss.elastic.co/u/kimchy)\
**Post date:** [June 12, 2011, 7:16am UTC](https://discuss.elastic.co/t/windows-2008-es-cluster-issue/4606/2 "2011-06-12T07:16:26Z")

</div>

First, 0.16.2 has much better memory usage patterns compared to 0.16.0. So, I suggest you give it a go.

One more thing, your installation is a bit problematic since the Node3 allocates 20gb out of 24gb to elasticsearch, which leaves very little to the operating system (and the file system cache).

On Saturday, June 11, 2011 at 1:20 AM, Katrina K wrote:

> Hi,
> 
> We have four Servers in Our ES Cluster. In one of the server we saw a  
> memory strange situation. here is my server detailed Specification
> 
> ES Version: 16.0
> 
> Cluster Details  
> No of Data Nodes : 3 (Node1,2&3)  
> No of No Data Noode: 1 (Node 4)
> 
> Index Details  
> number\_of\_shards : 6  
> number\_of\_replicas : 1
> 
> Server Details:
> 
> 1. Node 1, 3 & 4 installed OS is Windows 2003 Server Enterprise  
> edition R2 64 bit SP2.
> 2. Node 2 installed OS is Windows 2008 Server Enterprise edition 64  
> bit SP2
> 
> Node 1 & 2 Configuration  
> Pysical RAM - 48 GB  
> ES Allocated RAM - 20 GB
> 
> Node 3 Configuration  
> Pysical RAM - 24 GB  
> ES Allocated RAM - 20 GB
> 
> Node 4 Configuration  
> Pysical RAM - 24 GB  
> ES Allocated RAM - 10 GB
> 
> Congig.yml Settings:  
> "network :  
> host : 10.41.23.4  
> gateway:  
> type: fs  
> fs:  
> location: \10.41.23.6\ElasticSearchGateway  
> indices:  
> memory:  
> index\_buffer\_size : 20%  
> index:  
> gateway:  
> snapshot\_on\_close: false  
> cluster:  
> name: Dragon  
> http:  
> enabled: false  
> index:  
> number\_of\_shards : 6  
> number\_of\_replicas : 1  
> bootstrap:  
> mlockall : true"
> 
> Memory Settings:  
> "if "%ES\_MIN\_MEM%" == "" (  
> set ES\_MIN\_MEM=20g  
> )
> 
> if "%ES\_MAX\_MEM%" == "" (  
> set ES\_MAX\_MEM=20g  
> )"
> 
> Node 2 Server(windows 2008) Elastic Search memory is increasing(full  
> usage) frequently compare to other servers (Windows 2003 Server). so  
> the cluster performance geeting slow for every time.
> 
> please help me how to avoid this issue  
> Is there any configuration item I'm missing?
> 
> Thanks,  
> Katrinaa

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 6, 2017, 4:03am UTC](https://discuss.elastic.co/t/windows-2008-es-cluster-issue/4606/3 "2017-07-06T04:03:46Z")

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