# Error adding a 4th node to existing ES cluster
**URL:** https://discuss.elastic.co/t/error-adding-a-4th-node-to-existing-es-cluster/344252
**Category:** Elasticsearch
**Created:** [October 2, 2023, 6:02pm UTC](https://discuss.elastic.co/t/error-adding-a-4th-node-to-existing-es-cluster/344252 "2023-10-02T18:02:51Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Bolmar](https://discuss.elastic.co/u/Bolmar)
#### Post date: [October 2, 2023, 6:02pm UTC](https://discuss.elastic.co/t/error-adding-a-4th-node-to-existing-es-cluster/344252/1 "2023-10-02T18:02:51Z")
ERROR: Skipping security auto configuration because this node is configured to bootstrap or to join a multi-node cluster, which is not supported.
Steps for joining 4th node (First approach):
- Extract ES software (elasticsearch-8.9.0-linux-aarch64.tar.gz) to local drive.
- Without making any modifications to the eleasticsearch.yml file.
executed enrollment statement using new generated token from node-1:
bin/elasticsearch --enrollment-token eyJ2ZXIiOiI4.........
\*\*\* Get above error.
Second Approach:
- Modified the new elasticsearch.yml as follows:
#############################
cluster.name: work\_search\_clstr
node.name: node-4
path.data: /media/orangepi/ext-drive/es\_data
path.repo: /mnt/bcshare/ES\_snaps
bootstrap.memory\_lock: true
network.host: 192.168.86.91
http.port: 9200
discovery.seed\_hosts: ["192.168.86.59", "192.168.86.88", "192.168.86.43", "192.168.86.91"]
cluster.initial\_master\_nodes: ["node-1", "node-2"]
transport.host: 0.0.0.0
###########################
executed enrollment statement using new generated token from node-1:
bin/elasticsearch --enrollment-token eyJ2ZXIiOiI4.........
\*\*\* Get above error.
Note: I had no issues using the second approach while joining node-2 and node-3 to the cluster.
What am I doing wrong?
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [October 30, 2023, 6:03pm UTC](https://discuss.elastic.co/t/error-adding-a-4th-node-to-existing-es-cluster/344252/2 "2023-10-30T18:03:15Z")
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