Replacing a host using the same name and IP address

If a host of an existing Vertica database is removed you can replace it while the database is running.

If a host of an existing Vertica database is removed you can replace it while the database is running.

You can replace the host with a new host that has the following same characteristics as the old host:

  • Name

  • IP address

  • Operating system

  • The OS administrator user

  • Directory location

Replacing the host while your database is running prevents system downtime. Before replacing a host, backup your database. See Backing up and restoring the database for more information.

Replace a host using the same characteristics as follows:

  1. Run install_vertica from a functioning host using the --rpm or --deb parameter:

    $ /opt/vertica/sbin/install_vertica --rpm rpm_package
    

    For more information see Installing using the command line.

  2. Use Administration Tools from an existing node to restart the new host. See Restart Vertica on a node.

The node automatically joins the database and recovers its data by querying the other nodes in the database. It then transitions to an UP state.