# Data node unable to find master node
**URL:** https://discuss.elastic.co/t/data-node-unable-to-find-master-node/200187
**Category:** Elasticsearch
**Created:** [September 19, 2019, 10:57am UTC](https://discuss.elastic.co/t/data-node-unable-to-find-master-node/200187 "2019-09-19T10:57:33Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Miao](https://discuss.elastic.co/u/Miao)
#### Post date: [September 19, 2019, 10:57am UTC](https://discuss.elastic.co/t/data-node-unable-to-find-master-node/200187/1 "2019-09-19T10:57:34Z")
I have two Windows VMs hosted on Azure. Both have ElasticSearch 7.x installed. One of them is designated as the master node, and the other a data node.
Here are the contents of the `elasticsearch.yml` file on the master node:
```auto
# ---------------------------------- Cluster -----------------------------------
cluster.name: xr
# ------------------------------------ Node ------------------------------------
node.name: xr-master-node
node.master: true
node.data: true
# ---------------------------------- Network -----------------------------------
network.host: [_local_, _site_]
# --------------------------------- Discovery ----------------------------------
cluster.initial_master_nodes: xr-master-node
```
And on the data node:
```auto
# ---------------------------------- Cluster -----------------------------------
cluster.name: xr
# ------------------------------------ Node ------------------------------------
node.name: xr-data-node-1
node.master: false
node.data: true
# ---------------------------------- Network -----------------------------------
network.host: [_local_, _site_]
# --------------------------------- Discovery ----------------------------------
discovery.seed_hosts: "10.0.1.4" # This is the private IP address of the master node
cluster.initial_master_nodes: xr-master-node
```
However, every time I try to start ElasticSearch on the data node, I see this error message:
`[2019-09-19T10:49:07,567][WARN][o.e.c.c.ClusterFormationFailureHelper] [xr-data-node-1] master not discovered yet: have discovered [{xr-data-node-1}{B3YtyECXTAC1vw1rfzYGRw}{mfdrFCMNRP-SE2d6XRAN9g}{10.0.1.5}{10.0.1.5:9300}{di}{ml.machine_memory=3757625344, xpack.installed=true, ml.max_open_jobs=20}]; discovery will continue using [10.0.1.4:9300] from hosts providers and [] from last-known cluster state; node term 0, last-accepted version 0 in term 0`
What am I doing wrong?
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [October 17, 2019, 10:57am UTC](https://discuss.elastic.co/t/data-node-unable-to-find-master-node/200187/2 "2019-10-17T10:57:35Z")
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