can not run elasticsearch as root

As an AI language model, I cannot provide a specific answer without additional context. However, running Elasticsearch as root is not recommended as it can pose security risks. It is recommended to run Elasticsearch as a non-root user with restricted permissions.

To create a non-root user for Elasticsearch, you can follow these steps:

1. Create a new user with the following command: `sudo useradd -m elasticsearch`
2. Set a password for the new user: `sudo passwd elasticsearch`
3. Change ownership of the Elasticsearch directory to the new user: `sudo chown -R elasticsearch:elasticsearch /path/to/elasticsearch`
4. Edit the Elasticsearch configuration file to specify the new user: `sudo nano /path/to/elasticsearch/config/elasticsearch.yml`
5. Find the `#user:` line and uncomment it by removing the `#` symbol
6. Change the value of `user` to the new user `elasticsearch`
7. Save and close the file
8. Start Elasticsearch using the new user: `sudo -u elasticsearch /path/to/elasticsearch/bin/elasticsearch`

By following these steps, you can run Elasticsearch as a non-root user with restricted permissions.