Practical Implementation of Configuring Hadoop Cluster with HTTPS

2 years ago
Liam
3 minutes

Hadoop is an open-source distributed computing framework that can run on large-scale clusters. When configuring a Hadoop cluster, you can choose to use HTTPS to encrypt communication and enhance security. Below are the practical steps for configuring HTTPS in a Hadoop cluster.

  1. Create certificates and private keys: Generate certificates and private keys on each node in the Hadoop cluster, using OpenSSL tool. Install OpenSSL tool first, then use the following command to generate private keys and certificates:
  2. Generate a new RSA key pair and create a self-signed X.509 certificate with OpenSSL that is valid for 365 days. The private key will be saved in key.pem and the certificate in cert.pem.
  3. This will generate a 2048-bit RSA private key and a self-signed certificate valid for 365 days.
  4. Copy the certificate and private key to every node in the Hadoop cluster: Copy the generated key.pem and cert.pem files to the same directory on every node in the Hadoop cluster (e.g. /etc/hadoop/ssl).
  5. Set up the SSL configuration file for Hadoop: On each node of the Hadoop cluster, edit the Hadoop SSL configuration file (e.g., core-site.xml) and add the following configuration.
  6. hadoop.ssl.enabled
    true     hadoop.ssl.server.conf
    /etc/hadoop/ssl/hadoop-ssl-server.xml     hadoop.ssl.client.conf
    /etc/hadoop/ssl/hadoop-ssl-client.xml
  7. Set up the SSL server configuration file for Hadoop: on each node in the Hadoop cluster, create and edit the SSL server configuration file for Hadoop (such as hadoop-ssl-server.xml), and add the following settings:
  8. Here is the configuration with the SSL server keystore location set to /etc/hadoop/ssl/key.pem, keystore password set to keystore_password, SSL server truststore location set to /etc/hadoop/ssl/cert.pem, and truststore password set to truststore_password.
  9. Replace keystore_password with the password for the private key, and replace truststore_password with the password for the certificate.
  10. Configure the SSL client configuration file for Hadoop: On each node of the Hadoop cluster, create and edit the SSL client configuration file (such as hadoop-ssl-client.xml), and add the following settings:
  11. SSL client keystore location
    /etc/hadoop/ssl/key.pem     SSL client keystore password
    keystore_password     SSL client truststore location
    /etc/hadoop/ssl/cert.pem     SSL client truststore password
    truststore_password
  12. Replace keystore_password with the password of the private key, and replace truststore_password with the password of the certificate.
  13. Enable SSL functionality for Hadoop: On each node of the Hadoop cluster, add the following environment variables to the Hadoop startup script (e.g. hadoop-env.sh).
  14. Add the following SSL configuration parameters to the Hadoop options: trustStore location and password, keyStore location and password.
  15. Replace truststore_password with the certificate password and keystore_password with the certificate password.
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