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---
title: OpenMetadata Server
slug: /developers/contribute/build-code-and-run-tests/openmetadata-server
---
# OpenMetadata Server
Learn how to run the OpenMetadata server in development mode by using Docker and IntelliJ.
## Prerequisites
- Make sure you have a local instance of MySQL and ElasticSearch.
- For an easy install of MySQL and ES, just install Docker on your local machine and run the following commands from the top-level directory
```shell
docker-compose -f docker/local-metadata/docker-compose-dev.yml up
```
- Bootstrap MySQL with tables
1. Create a distribution as explained [here](/developers/contribute/build-code-and-run-tests/openmetadata-server#create-a-distribution-packaging)
2. Extract the distribution tar.gz file and run the following command
```shell
cd open-metadata-<version>/bootstrap
sh bootstrap_storage.sh drop-create-all
```
- Bootstrap ES with indexes and load sample data into MySQL
1. Run OpenMetadata service instances through IntelliJ IDEA following the instructions [here](/developers/contribute/build-code-and-run-tests/openmetadata-server#run-instance-through-intellij-idea)
2. Once the logs indicate that the instance is up, run the following commands from the top-level directory
```shell
python3 -m venv venv
source venv/bin/activate
pip install -r ingestion/requirements.txt
make install_dev generate
cd ingestion
pip install -e '.[sample-data, elasticsearch]'
metadata ingest -c ./pipelines/sample_data.json
metadata ingest -c ./pipelines/sample_usage.json
metadata ingest -c ./pipelines/metadata_to_es.json
```
- You are now ready to explore the app by going to [http://localhost:8585](http://localhost:8585) *If the web page doesn't work as intended, please take a look at the troubleshooting steps [here](/developers/contribute/build-code-and-run-tests/openmetadata-server#troubleshooting)
## Building
The following commands must be run from the top-level directory.
```shell
mvn clean install
```
If you wish to skip the unit tests you can do this by adding `-DskipTests` to the command line.
## Create a distribution (packaging)
You can create a distribution as follows.
```shell
$ mvn clean install
```
The binaries will be created at:
```shell
openmetadata-dist/target/open-metadata-<version>.pom
openmetadata-dist/target/open-metadata-<version>.tar.gz
```
## Run instance through IntelliJ IDEA
Add a new Run/Debug configuration like the below screenshot.
1. Click on Intellij - Run menu
2. Click on "Edit Configurations"
3. Click + sign and Select Application and make sure your config looks similar to the below image
<Image src="/images/developers/contribute/build-code-and-run-tests/intellij-runtime-config.png" alt="Intellij Runtime Configuration" caption="Intellij Runtime Configuration"/>
## Add missing dependency
Right-click on openmetadata-service
<Image src="/images/developers/contribute/build-code-and-run-tests/intellij-openmetadata-service.png" alt="Open project" caption=" "/>
Click on "Open Module Settings"
<Image src="/images/developers/contribute/build-code-and-run-tests/intellij-open-settings.png" alt="Open Module Settings" caption=" "/>
Go to "Dependencies"
<Image src="/images/developers/contribute/build-code-and-run-tests/intellij-dependencies.png" alt="Go to dependencies" caption=" "/>
Click “+” at the bottom of the dialog box and click "Add"
<Image src="/images/developers/contribute/build-code-and-run-tests/intellij-add-dependencies.png" alt="Add dependency" caption=" "/>
Click on Library
<Image src="/images/developers/contribute/build-code-and-run-tests/intellij-library.png" alt="Click on Library" caption=" "/>
In that list look for "jersey-client:2.25.1"
<Image src="/images/developers/contribute/build-code-and-run-tests/intellij-jersey-dependency.png" alt="Add jersey-client dependency" caption=" "/>
Select it and click "OK". Now run/debug the application.
## Troubleshooting
- If you see blank page at [http://localhost:8585](http://localhost:8585), please check the logs at logs/openmetadata.log. You might be encountering one of the following errors:
- `connection refused` or `unreachable` - please confirm that MySQL and ES are reachable outside of docker by running `docker ps` and checking that ports 3306 and 9200 are listening on 0.0.0.0
- If ElasticSearch in Docker on Mac is crashing, try changing Preferences -> Resources -> Memory to 4GB
- If ElasticSearch logs show `high disk watermark [90%] exceeded`, try changing Preferences -> Resources -> Disk Image Size to at least 16GB
- `Public Key Retrieval is not allowed` - verify that the JDBC connect URL in `conf/openmetadata.yaml` is configured with the parameter `allowPublicKeyRetrieval=true `
- Browser console shows javascript errors, try doing a [clean build](/developers/contribute/build-code-and-run-tests/openmetadata-server#create-a-distribution-packaging). Some npm packages may not have been built properly.
## Coding Style
1. Configure IntelliJ to disable the [wild-card imports]
([https://www.jetbrains.com/help/idea/creating-and-optimizing-imports.html#disable-wildcard-imports](https://www.jetbrains.com/help/idea/creating-and-optimizing-imports.html#disable-wildcard-imports))