Skip navigation links
6.1.1.2 Cluster Data Node FileSystemDir Files »
Section Navigation      [Toggle]

6.1.1.1. Cluster Data Node DataDir Files

A cluster data node's DataDir contains at a minimum 3 files. These are named as shown here, where node_id is the node ID:

  • ndb_node_id_out.log

    Sample output: 

    2006-09-12 20:13:24 [ndbd] INFO     -- Angel pid: 13677 ndb pid: 13678
2006-09-12 20:13:24 [ndbd] INFO     -- NDB Cluster -- DB node 1
2006-09-12 20:13:24 [ndbd] INFO     -- Version 5.1.12 (beta) --
2006-09-12 20:13:24 [ndbd] INFO     -- Configuration fetched at localhost port 1186
2006-09-12 20:13:24 [ndbd] INFO     -- Start initiated (version 5.1.12)
2006-09-12 20:13:24 [ndbd] INFO     -- Ndbd_mem_manager::init(1) min: 20Mb initial: 20Mb
WOPool::init(61, 9)
RWPool::init(82, 13)
RWPool::init(a2, 18)
RWPool::init(c2, 13)
RWPool::init(122, 17)
RWPool::init(142, 15)
WOPool::init(41, 8)
RWPool::init(e2, 12)
RWPool::init(102, 55)
WOPool::init(21, 8)
Dbdict: name=sys/def/SYSTAB_0,id=0,obj_ptr_i=0
Dbdict: name=sys/def/NDB$EVENTS_0,id=1,obj_ptr_i=1
m_active_buckets.set(0)

  • ndb_node_id_signal.log

    This file contains a log of all signals sent to or from the data node.

    Note

    This file is created only if the SendSignalId parameter is enabled, which is true only for -debug builds.

  • ndb_node_id.pid

    This file contains the data node's process ID; it is created when the ndbd process is started.

The location of these files is determined by the value of the DataDir configuration parameter. See DataDir.