Hi, When all baseline nodes have joined the cluster it will self-activate. After self-activation Ignite::isActive() will return true https://ignite.apache.org/releases/latest/cppdoc/classignite_1_1Ignite.html#a5455dd6d8f8453073fbd32c60fe0c3af
When isActive() returns true it means, by defintion, that all baseline nodes are online. from the doc: When the cluster is activated for the first time, baseline topology is automatically established from the current set of server nodes. Once this is done, information about nodes that constitute the baseline topology is persisted to disk. Then, even if you shutdown and restart the cluster, the cluster will be activated automatically once all the nodes set in the baseline topology are up and running. https://apacheignite.readme.io/docs/baseline-topology#activating-the-cluster Thanks, Alex -- Sent from: http://apache-ignite-users.70518.x6.nabble.com/