Documentation Home
MySQL Cluster API Developer Guide
Download this Manual
PDF (US Ltr) - 5.3Mb
PDF (A4) - 5.3Mb
EPUB - 2.3Mb
HTML Download (TGZ) - 2.2Mb
HTML Download (Zip) - 2.3Mb

MySQL Cluster API Developer Guide  /  ...  /  MySQL Cluster Data Node Data Directory Files MySQL Cluster Data Node Data Directory Files

A MySQL Cluster data node's data directory (DataDir) contains at least 3 files. These are named as shown in the following list, where node_id is the node ID:

  • ndb_node_id_out.log

    Sample output:

    2015-11-01 20:13:24 [ndbd] INFO     -- Angel pid: 13677 ndb pid: 13678
    2015-11-01 20:13:24 [ndbd] INFO     -- NDB Cluster -- DB node 1
    2015-11-01 20:13:24 [ndbd] INFO     -- Version 5.6.27-ndb-7.4.8 --
    2015-11-01 20:13:24 [ndbd] INFO     -- Configuration fetched at localhost port 1186
    2015-11-01 20:13:24 [ndbd] INFO     -- Start initiated (version 5.6.27-ndb-7.4.8)
    2015-11-01 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
  • ndb_node_id_signal.log

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


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


    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.

User Comments
Sign Up Login You must be logged in to post a comment.