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@@ -7,11 +7,11 @@ a time so upgrading does not interrupt service. Running multiple versions of
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not supported, as shards cannot be replicated from upgraded nodes to nodes
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running the older version.
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-It is best to upgrade the master-ineligible nodes in your cluster first and then
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-upgrade the master-eligible nodes. Once enough of the master-eligible nodes have
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-been upgraded they may form a cluster that nodes of older versions cannot join.
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-If you upgrade the master-eligible nodes last then all the other nodes will not
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-be running an older version and so they will be able to join the cluster.
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+It is best to upgrade the master-eligible nodes in your cluster after all of
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+the other nodes. Once you have started to upgrade the master-eligible nodes
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+they may form a cluster that nodes of older versions cannot join. If you
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+upgrade the master-eligible nodes last then all the other nodes will not be
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+running an older version and so they will be able to join the cluster.
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Rolling upgrades are supported:
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Robin Clarke