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Adding multiple nodes to cluster with add-node can cause outage if cluster connectivity issues exist

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ontap-9
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core
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Applies to

ONTAP 9.4 and later

Issue

1.  Addition of multiple nodes to a cluster requires cluster connectivity; otherwise, an outage will occur.
 
EXAMPLE:  Adding two nodes, node3 and node 4 to an existing two-node cluster

::>  cluster add-node -cluster-ips <cluster IP address of node 3 adding to cluster>,<cluster IP address of node 4 adding to cluster> -node-names <node-name_of_node_3,node_name_of_node_b" 

2. Cluster LIFs on node 3 has cluster connectivity issue and will cause an outage.  Notice the health of all the nodes in the cluster is false.
 
EXAMPLE:  Adding node3 and node4 to an existing two-node cluster when node3's cluster LIFs do NOT have full-mesh

::*> cluster show
Node                 Health  Eligibility   Epsilon
-------------------- ------- ------------  ------------
node1                false   true          false
node2                false   true          false
node3                false   true          false
node4                false   true          false

 

 

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