MySQL NDB 叢集 8.1 手冊
MySQL NDB 叢集 8.0 手冊
NDB 叢集 API 開發人員指南
- 程式碼
2600
- 符號
CmvmiDumpConnections
- 核心區塊
描述。 顯示所有叢集節點之間連線的狀態。當叢集正常運作時,每個連線都具有相同的狀態。
範例輸出。
Node 3: Connection to 1 (MGM) is connected
Node 3: Connection to 2 (MGM) is trying to connect
Node 3: Connection to 3 (DB) does nothing
Node 3: Connection to 4 (DB) is connected
Node 3: Connection to 7 (API) is connected
Node 3: Connection to 8 (API) is connected
Node 3: Connection to 9 (API) is trying to connect
Node 3: Connection to 10 (API) is trying to connect
Node 3: Connection to 11 (API) is trying to connect
Node 4: Connection to 1 (MGM) is connected
Node 4: Connection to 2 (MGM) is trying to connect
Node 4: Connection to 3 (DB) is connected
Node 4: Connection to 4 (DB) does nothing
Node 4: Connection to 7 (API) is connected
Node 4: Connection to 8 (API) is connected
Node 4: Connection to 9 (API) is trying to connect
Node 4: Connection to 10 (API) is trying to connect
Node 4: Connection to 11 (API) is trying to connect
額外資訊。 訊息 is trying to connect
實際上表示相關節點尚未啟動。當 config.ini
檔案中存在未使用的 [api]
或 [mysql]
區段時,也就是為 API 或 SQL 節點保留了額外的插槽時,也會看到這種情況。