Cloudera Enterprise 5.15.x | Other versions

Java Development Kit Installation

Note: Cloudera, Inc. acquired Oracle JDK software under the Oracle Binary Code License Agreement. Pursuant to Item D(v)(a) of the SUPPLEMENTAL LICENSE TERMS of the Oracle Binary Code License Agreement, use of JDK software is governed by the terms of the Oracle Binary Code License Agreement. By installing the JDK software, you agree to be bound by these terms. If you do not wish to be bound by these terms, then do not install the Oracle JDK.

Some installation paths require that you install the Oracle Java Development Kit on hosts before deploying Cloudera Manager, CDH, and managed services. To install the Oracle JDK, follow the instructions in Installing the Oracle JDK. The completed installation, or any already existing installation, must meet the following requirements.

Requirements

Install one of the CDH and Cloudera Manager Supported JDK Versions.
Install the same version of the Oracle JDK on each host.
Install the JDK in /usr/java/jdk-version.

Important:

You cannot upgrade from JDK 1.7 to JDK 1.8 while upgrading to CDH 5.3. The cluster must already be running CDH 5.3 when you upgrade to JDK 1.8.
If you are upgrading from a lower major version of the JDK to JDK 1.8 or from JDK 1.6 to JDK 1.7, and you are using AES-256 bit encryption, you must install new encryption policy files. (In a Cloudera Manager deployment, you automatically install the policy files; for unmanaged deployments, install them manually.) See Using AES-256 Encryption.
For both managed and unmanaged deployments, you must also ensure that the Java Truststores are retained during the upgrade. (See Recommended Keystore and Truststore Configuration.)
On SLES 11 platforms, do not install or try to use the IBM Java version bundled with the SLES distribution. CDH does not run correctly with that version.

Installing the Oracle JDK

The Oracle JDK installer is available both as an RPM-based installer for RPM-based systems, and as a binary installer for other systems.

Download the .tar.gz file for one of the supported versions of the Oracle JDK from Java SE 8 Downloads or Java SE 7 Downloads. (These links are correct at the time of writing but change frequently.)
Extract the JDK to /usr/java/jdk-version; for example /usr/java/jdk.1.7.0_nn or /usr/java/jdk.1.8.0_nn, where nn is a supported version.
Set JAVA_HOME to the directory where the JDK is installed. Add the following line to the specified files:
```
export JAVA_HOME=/usr/java/jdk.1.7.0_nn
```
- Cloudera Manager Server host: /etc/default/cloudera-scm-server. This affects only the Cloudera Manager Server process, and does not affect the Cloudera Management Service roles.
- All hosts in an unmanaged deployment: /etc/default/bigtop-utils. You do not need to do this for clusters managed by Cloudera Manager.
Follow the instructions in Configuring a Custom Java Home Location. This change affects all CDH processes and Cloudera Management Service roles in the cluster.

Note: This method of changing the JDK for Cloudera Manager, Cloudera Management Service roles, and CDH processes does not affect the JDK used by other non-Cloudera processes.

Page generated May 18, 2018.