Preparing the cluster for transition

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Before transition, you must prepare the cluster to communicate with the 7-Mode Transition Tool and prepare the SVMs for transition. You can transition to a target HA pair that has data aggregates.

  • The cluster must already be set up and the target cluster nodes must be joined to the cluster.

  • The SVMs must be created and assigned to an IPspace.

  • You can transition the 7-Mode disk shelves to a target HA pair that has preexisting data aggregates and volumes.

    For a two-node cluster, you must have a data aggregate to host the root volumes of the target SVMs. For a cluster with four or more nodes, the root volumes of the SVMs can be hosted either on the target nodes of the transition or on other nodes in the cluster.

You should not upgrade the cluster to a different ONTAP version during transition.

You can upgrade the cluster to a patch release of the same ONTAP version, if required.
  1. From an administration host, verify that the cluster is reachable by using the cluster-management LIF:

    ssh username@cluster_mgmt_IP

  2. Enable SSLv3 or FIPS on the cluster:

    If you want to enable…​ Enter…​

    SSLv3

    system services web modify -sslv3-enabled true

    FIPS 140-2 compliance

    system services web modify -ssl-fips-enabled true

    When FIPS 140-2 compliance is enabled, SSLv3 is disabled. ONTAP prevents you from enabling SSLv3 when FIPS 140-2 compliance is enabled. If you enable FIPS 140-2 and then subsequently disable it, SSLv3 remains disabled.

    The best practice is to enable FIPS because of the security vulnerabilities in SSLv3.
  3. Verify that HTTPS is allowed on the cluster management LIF:

    1. View the firewall policy for the cluster management LIF:
      network interface show -vserver svm_name -lif cluster_mgmt_lif -fields firewall-policy

      cluster1::> network interface show -vserver cluster1 -lif cluster_mgmt -fields firewall-policy
      vserver lif          firewall-policy
      ------- ------------ ---------------
      cluster1  cluster_mgmt mgmt
    2. Verify that the firewall policy associated with the cluster management LIF allows HTTPS access:
      system services firewall policy show -policy mgmt

      cluster1::> system services firewall policy show -policy mgmt
      Policy           Service    Action IP-List
      ---------------- ---------- ------ --------------------
      mgmt
                       dns        allow  0.0.0.0/0, ::/0
                       http       allow  0.0.0.0/0, ::/0
                       https      allow  0.0.0.0/0, ::/0
                       ndmp       allow  0.0.0.0/0, ::/0
                       ntp        allow  0.0.0.0/0, ::/0
                       rsh        deny   0.0.0.0/0, ::/0
                       snmp       allow  0.0.0.0/0, ::/0
                       ssh        allow  0.0.0.0/0, ::/0
                       telnet     deny   0.0.0.0/0, ::/0
      9 entries were displayed.