elasticsearch/docs/reference/elasticsearch-plugins/discovery-gce-usage-port.md
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Co-authored-by: Liam Thompson <32779855+leemthompo@users.noreply.github.com>
Co-authored-by: Liam Thompson <leemthompo@gmail.com>
Co-authored-by: Martijn Laarman <Mpdreamz@gmail.com>
Co-authored-by: István Zoltán Szabó <szabosteve@gmail.com>
2025-02-27 17:56:14 +01:00

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---
mapped_pages:
- https://www.elastic.co/guide/en/elasticsearch/plugins/current/discovery-gce-usage-port.html
---
# Changing default transport port [discovery-gce-usage-port]
By default, Elasticsearch GCE plugin assumes that you run Elasticsearch on 9300 default port. But you can specify the port value Elasticsearch is meant to use using google compute engine metadata `es_port`:
## When creating instance [discovery-gce-usage-port-create]
Add `--metadata es_port=9301` option:
```sh
# when creating first instance
gcloud compute instances create myesnode1 \
--scopes=compute-rw,storage-full \
--metadata es_port=9301
# when creating an instance from an image
gcloud compute instances create myesnode2 --image=elasticsearch-1-0-0-RC1 \
--zone europe-west1-a --machine-type f1-micro --scopes=compute-rw \
--metadata es_port=9301
```
## On a running instance [discovery-gce-usage-port-run]
```sh
gcloud compute instances add-metadata myesnode1 \
--zone europe-west1-a \
--metadata es_port=9301
```