# Confluence diagnostics: node left or joined the cluster

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コミュニティに質問

These diagnostic alerts indicate when a node leaves the cluster, and when a node joins the cluster.

The following appears in the application log:

INFO ; HAZELCAST ; HAZELCAST-1001 ; Node joined the cluster ; not-detected ;  ;  ; {"member":"Member [...]:... - ..."}
WARNING ; HAZELCAST ; HAZELCAST-1002 ; Node left the cluster ; not-detected ;  ;  ; {"member":"Member [...]:... - ..."}

These alerts are enabled by default in Confluence 6.11 or later.

### この問題の解決方法

There's no action required for these alerts.

However, this information may be helpful when determining the chain of events that lead to an outage or other issue.

### What will happen if I ignore this alert?

These alerts are for information only. There's no action required.