Getting Started Upgrading Cloudera Manager

Before you upgrade Cloudera Manager, you need to gather some information and review the limitations and release notes. Fill in the My Environment form below to customize your Cloudera Manager upgrade procedures. See the Collect Information section below for assistance in locating the required information.

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Collect Information

  1. Log in to the Cloudera Manager Server host.
    ssh my_cloudera_manager_server_host
  2. Collect the following information about your environment and fill in the form above. This information will be remembered by your browser on all pages in this Upgrade Guide.
    1. The current version of the Operating System:
      lsb_release -a

      Database parameters:

      cat /etc/cloudera-scm-server/db.properties
      ...
      com.cloudera.cmf.db.type=mysql
      com.cloudera.cmf.db.host=database_hostname:database_port
      com.cloudera.cmf.db.name=scm
      com.cloudera.cmf.db.user=scm
      com.cloudera.cmf.db.password=SOME_PASSWORD
    2. Log in to the Cloudera Manager Admin console and find the following:
      1. The version of Cloudera Manager used in your cluster. Go to Support > About.
      2. The version of the JDK deployed in the cluster. Go to Support > About.

Preparing to Upgrade Cloudera Manager

  • You must have SSH access to the Cloudera Manager server hosts and be able to log in using the root account or an account that has password-less sudo permission for all hosts.
  • Review the following when upgrading to Cloudera Manager 7.1 or higher:

    CDP Private Cloud Base Requirements and Supported Versions

  • You may be required to upgrade the operating system before upgrading. See Operating System Requirements to determine operating system support for the version of Cloudera Manager you are upgrading to. Depending on the support, you may need to upgrade the operating system.

    If you must or choose to upgrade to a supported operating system, you must determine whether to upgrade the operating system first or Cloudera Manager first. If the both the current version of Cloudera Manager and the version you are upgrading to both support newer version of the operating system but the new version of Cloudera Manager does not support the older operating system, you must upgrade to the newer operating system before upgrading Cloudera Manager. If this is not true, then you must upgrade Cloudera Manager before upgrading the operating system.

    See Upgrading the Operating System.

  • Install a supported version of the Java Development Kit (JDK) on all hosts. If you are upgrading to Cloudera Manager and CDH version 6.1 and higher, you can choose to install OpenJDK 1.8 instead of the Oracle JDK.
    There two options for JDK installation:
    • Manually install the Oracle JDK or OpenJDK on all hosts.
    • Manually install the Oracle JDK 1.8 on the Cloudera Manager host, and then select the Install Oracle Java SE Development Kit checkbox when prompted while running the Cloudera Manager Upgrade wizard.

    See Upgrading the JDK

  • Review the Release Notes.
  • Review the Cloudera Security Bulletins.
  • Downtime for the cluster is not required to complete the Cloudera Manager upgrade.
  • Downtime for the cluster is not required to complete the Cloudera Manager upgrade; for services that contribute to Cloudera Navigator audits, lineage, or search, restarting the service is recommended but can be scheduled independently of the upgrade.
  • Downtime for the cluster is required when upgrading to Cloudera Manager 7.1 or higher.
  • The embedded PostgreSQL database installed with the Trial Installer is not supported in production environments because a trial installation cannot easily be upgraded, backed up, or migrated into a production-ready configuration without manual steps requiring down time.

    Consider migrating from the Cloudera Manager embedded PostgreSQL database server to an external PostgreSQL database before upgrading Cloudera Manager.

  • If your cluster uses Oracle for any databases, before upgrading from CDH 5 to CDH 6, check the value of the COMPATIBLE initialization parameter in the Oracle Database using the following SQL query: 
    SELECT name, value FROM v$parameter WHERE name = 'compatible'
    The default value is 12.2.0. If the parameter has a different value, you can set it to the default as shown in the Oracle Database Upgrade Guide.