# Will Elasticsearch automatically load balance a two node cluser
**URL:** https://discuss.elastic.co/t/will-elasticsearch-automatically-load-balance-a-two-node-cluser/204956
**Category:** Elasticsearch
**Created:** [October 23, 2019, 8:19pm UTC](https://discuss.elastic.co/t/will-elasticsearch-automatically-load-balance-a-two-node-cluser/204956 "2019-10-23T20:19:08Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@jtgajda](https://discuss.elastic.co/u/jtgajda)
#### Post date: [October 23, 2019, 8:19pm UTC](https://discuss.elastic.co/t/will-elasticsearch-automatically-load-balance-a-two-node-cluser/204956/1 "2019-10-23T20:19:09Z")
I have a two node cluster. I currently connect to the master node using the Python Elasticsearch client.
Will python automatically distibute the query traffice between the two nodes or do I need to take special actions?
I did some research and it was suggested to accompish this as follows:
es = Elasticsearch(["135.109.238.70", "135.109.238.66"],
sniff\_on\_start=True,
sniff\_on\_connection\_fail=True,
sniffer\_timeout=60
)
However, when I add the sniff\_on\_start=True line, the python script fails with the following message.
Traceback (most recent call last):
File "./ts.py", line 22, in
res = es.search(index="mcdocs", body={"from": 0, "size": 10, "\_source": {"excludes": ["content"]}, "query": {"match": {"content": "5g planning installation"}}})
File "/usr/local/lib/python3.7/site-packages/elasticsearch/client/utils.py", line 84, in \_wrapped
return func(\*args, params=params, \*\*kwargs)
File "/usr/local/lib/python3.7/site-packages/elasticsearch/client/ **init**.py", line 819, in search
"GET", \_make\_path(index, "\_search"), params=params, body=body
File "/usr/local/lib/python3.7/site-packages/elasticsearch/transport.py", line 350, in perform\_request
timeout=timeout,
File "/usr/local/lib/python3.7/site-packages/elasticsearch/connection/http\_urllib3.py", line 245, in perform\_request
raise ConnectionError("N/A", str(e), e)
elasticsearch.exceptions.ConnectionError: ConnectionError(\: Failed to establish a new connection: [Errno -2] Name or service not known) caused by: NewConnectionError(\: Failed to establish a new connection: [Errno -2] Name or service not known)
If I remove the sniff\_on\_start=True or set it to False, the connection and query are successful. Will Elasticsearch load balance without the sniff\_on\_start or are there any other suggestions?
Also, how can I tell if queries/traffic are actually being balanced between the two nodes. I am not seeing entries for individual queries.
Thank you for any help with this!
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [November 20, 2019, 8:19pm UTC](https://discuss.elastic.co/t/will-elasticsearch-automatically-load-balance-a-two-node-cluser/204956/2 "2019-11-20T20:19:09Z")
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