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    RPM Install and Upgrade

    This topic describes how to install and upgrade Dremio using an RPM package.

    Installing Dremio

    Perform these steps on each node of your Dremio cluster:

    1. Download and install Dremio via RPM.

      Download and install Dremio 
      sudo yum install dremio-<VERSION>.rpm

    2. (Optional) Enable dremio to start at boot.

      Enable dremio start at boot (optional) 
      sudo chkconfig --level 3456 dremio on

    3. Configure Dremio. See Dremio Configuration for more information.

    Default Configuration

    The following configurations are created by default when you install Dremio using the RPM package.

    Software/File Location
    Software location /opt/dremio
    dremio.conf configuration file /etc/dremio/dremio.conf
    dremio-env environment configuration file /etc/dremio/dremio-env
    Local path (for data location) /var/lib/dremio
    Log directory /var/log/dremio
    PID files directory /var/run/dremio

    Changing the Dremio User and Group

    The generic installation steps assume a user called dremio.

    To run the Dremio daemon service under a different username (for example, testuser), apply the following changes before configuring.

    1. Update the DREMIO_USER in the /etc/sysconfig/dremio file to testuser.

    2. Apply the following permissions:

      Permissions to apply 
      sudo chown -R testuser:testuser /var/log/dremio
sudo chown -R testuser:testuser /var/lib/dremio
sudo chown -R testuser:testuser /var/run/dremio

    Upgrading Dremio

    This topic provides upgrade instructions for RPM-based installations. These instructions assume you are using the default RPM installation paths for configuration, data and logging.

    Before you begin, do the following:

    To upgrade your Dremio installation:

    1. Ensure that your existing Dremio cluster is backed up. See Create a backup for more information.

    2. Shut down all Dremio provisioned nodes. For example: service dremio stop

    3. On each Dremio node in your cluster, copy your old Dremio installation to another location on the node. For example:

      Copy and move Dremio installation 
      cp -rL /opt/dremio /opt/dremio_bak

    4. Download and install the new Dremio version. For example:

      Download and install Dremio 
      sudo yum install dremio-<version>.rpm
      • For YARN deployments, install on each coordinator node in your Dremio cluster.
      • For non-YARN deployments, install on all nodes in your Dremio cluster.

    5. Copy the /conf directory and associated configuration files from your backup-copy location (from Step# 3) to the new installation location. As a result, the default files from the fresh install are overwritten. For example:

      Copy and move /conf directory and files 
      cp /opt/dremio_bak/conf/* /opt/dremio/conf
      • For YARN deployments, perform this step on each coordinator node in your Dremio cluster.
      • For non-YARN deployments, perform this step on all nodes in your Dremio cluster.

    6. On the coordinator node, copy the /data directory and associated data files from your backup-copy location (from Step# 3) to the new installation location. For example:

      Copy and move /data directory and files 
      cp -r /opt/dremio_bak/data /opt/dremio/data

    note:

    The new /data directory and files must be in the same directory path as the original installation. A different directory path results in the loss of all reflections because they are accessed by their full path.

    If your original data directory is in a location different from /opt/dremio/data, then this step can be skipped.

    1. On the coordinator node, execute the upgrade script as the user running the Dremio Daemon service. For example, as “dremio”:

      Execute upgrade script 
      dremio-<version>/bin/dremio-admin upgrade

    2. Start up all Dremio provisioned nodes in the Dremio cluster. For example: service dremio start.

    3. Backup your new Dremio cluster. See Create a backup for more information.