Preparing the cluster for transition

Before transition, you must ensure that the cluster meets requirements such as allowing HTTPS, setting up intercluster LIFs, and verifying the network connectivity for transition.

Before you begin

About this task

You should not upgrade the cluster to a different ONTAP version during transition.
Note: You can upgrade the cluster to a patch release of the same ONTAP version, if required.

Procedure

  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.
    Important: 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.
  4. Create an intercluster LIF on each node of the cluster for communication between the cluster and 7-Mode system:
    1. network interface create -vserver svm_name -lif intercluster_lif -role intercluster -home-node home_node -home-port home_port -address ip_address -netmask netmask
      cluster1::> network interface create -vserver cluster1-01 -lif intercluster_lif -role intercluster -home-node cluster1-01 -home-port e0c -address 192.0.2.130 -netmask 255.255.255.0
    2. Create a static route.
      If you are transitioning to... Run this command...
      ONTAP 9.5 or earlier or clustered Data ONTAP 8.3.x network route create
      cluster1::> network route create -vserver vs0 -destination 0.0.0.0/0 -gateway 10.61.208.1
      Clustered Data ONTAP 8.2.x network routing-groups route create
      cluster1::> network routing-groups route create -vserver cluster1-01 -routing-group i192.0.0.0/18 -destination 0.0.0.0/0 - gateway 192.0.2.129
    3. Verify that you can use the intercluster LIF to ping the 7-Mode system: network ping -lif intercluster_lif -vserver svm_name -destination remote_inetaddress
      cluster1::> network ping -lif intercluster_lif -vserver cluster1 -destination system7mode
      system7mode is alive
    For multipathing, you must have two intercluster LIFs on each node.

    Network and LIF management