Configuring Metro-DR set up

Before you begin

Before you set up Metro-DR, ensure that all the mentioned prerequisites are met:
  • For general Metro-DR prerequisites, see General Metro-DR prerequisites.
  • For tiebreaker prerequisites, see Preparing the tiebreaker.
  • In disaster recovery, two clusters must be connected to failover and failback applications. If the cluster recovers after the expiry of the client cert, the connection must be cleaned and setup to rejoin the recovered cluster. For the procedure to rejoin, see Reconnecting OpenShift Container Platform cluster.
    During the installation planning, you can enable disaster recovery for your rack in either of these methods:
    • You have already set up your first rack as Site 1. During the installation of Site 2, connect it to Site 1 in a Metro-DR relationship.
    • You already got a standalone rack set up but not designated it as Site 1. During the installation of Site 2, utilize the connection snippet of Site 1 to establish a Metro-DR relationship between the two racks.

About this task

For more information about Metro-DR, see Metro-DR configuration for Global Data Platform.

Procedure

  1. Go to the Topology page of the primary site to see a pictorial representation of the connection between primary site and secondary site.
    Example failure statuses for Metro-DR are connection state failed, admin network connectivity failure, Daemon network connectivity failure, stretch cluster addition failure, Minio setup failure, RamenDr failure.
  2. Click Connect in the pictorial representation or click Connect tiebreaker.
  3. Enter the following tiebreaker details in the Connect tiebreaker window:
    IP address
    Enter the IP address of the tiebreaker.
    User ID
    The user id to log in to the tiebreaker
    Password
    The password for the tiebreaker user.
  4. Click Save
    The Tiebreaker connecting notification message is displayed. After the tiebreaker connects successfully, the Connect tiebreaker changes to Connect cluster. You cannot add more than two clusters.
    Note: The sites (clusters) and tiebreaker statuses are as follows:
    Healthy
    The status of the cluster or tiebreaker is healthy.
    Degraded
    Whenever a mismatch exists between the two sites.
    Failed
    When the connectivity is lost between the sites or with tiebreaker.
    Running
    All clusters and tiebreaker are running.
    If you want to edit details of the tiebreaker, do the following steps:
    1. Go to the Topology page.
    2. In the pictorial representation, click the tiebreaker.
    3. Click Edit.
    4. In the Edit tiebreaker credentials window, update the details of the tiebreaker and click Save.