MySQL Cluster Tutorial - cdn.oreillystatic.com

The status is one of NOTHING, CMVMI, STARTING, STARTED, SINGLEUSER, STOPPING_1,
STOPPING_2, STOPPING_3, or STOPPING_4. If the status is set to STARTING then the start
phase is also displayed.
ndbinfo.transporters
This is a view showing the status of the connection between each data node and each of the
other nodes in the cluster (data nodes, management nodes, MySQL Server nodes and any
NDB API applications):
mysql> select * from transporters;
+---------+----------------+--------------+
| node_id | remote_node_id | status |
+---------+----------------+--------------+
| 3 | 1 | CONNECTED |
| 3 | 3 | DISCONNECTED |
| 3 | 4 | CONNECTED |
| 3 | 102 | CONNECTED |
| 3 | 103 | CONNECTING |
| 3 | 104 | CONNECTING |
| 4 | 1 | CONNECTED |
| 4 | 3 | CONNECTED |
| 4 | 4 | DISCONNECTED |
| 4 | 102 | CONNECTED |
| 4 | 103 | CONNECTING |
| 4 | 104 | CONNECTING |
+---------+----------------+--------------+
Exercise
1. Connect to Cluster using mysql client
2. open the ndbinfo database:
mysql> use ndbinfo;
3. Check what tables are visible:
4. mysql> show tables;
5. Query the memory usage table:
6. mysql> select * from memoryusage;
7. Increase DataMemory in config.ini by 10% and restart 1 data node
8. Check memoryusage again
mysql> select * from memoryusage;
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