Exadata - centralized management utilities

Exadata has the following utilitities which facilitates centralized management across an Oracle Exadata System Software realm
   dcli
   cellcli
   dbmcli
  

=> dcli    :utility runs commands on multiple compute nodes and cells in parallel threads
=> cellcli :The Cell Control Command-Line Interface (CellCLI) utility is the command-line administration tool for Oracle Exadata Storage Server.
=> dbcli    :utility is the command-line administration tool for configuring database servers,


dcli examples:
 Assume dbs_group file contains compute nodes & cell_group file contains cell servers
cat  dbs_group
    db1comp0101.yg.com
    db1comp0102.yg.com
    db1comp0103.yg.com
    db1comp0104.yg.com
    db1comp0105.yg.com
    db1comp0106.yg.com
    db1comp0107.yg.com
    db1comp0108.yg.com

cat  cell_group
    cell1server0101.yg.com
    cell1server0102.yg.com
    cell1server0103.yg.com
    cell1server0104.yg.com
    cell1server0105.yg.com
    cell1server0106.yg.com
    cell1server0107.yg.com
    cell1server0108.yg.com
    cell1server0109.yg.com
    cell1server0110.yg.com
    cell1server0111.yg.com
    cell1server0112.yg.com
    cell1server0113.yg.com
    cell1server0114.yg.com

1. to run a command in all compute nodes
   dcli -g <group_file>  -l <user> <command>
   dcli -g dbs_group -l oracle df -h

2. to run a command in all cell servers ( assume oracle has ssh key set for cellmonitor account)
   dcli -g <group_file>  -l <user> <command>
   dcli -g cell_group -l cellmonitor cellcli -e list griddisk

3. to copy a file from one compute node to all computes

   dcli -g dbs_group -l oracle -f <filename> -d <target_location>
   dcli -g dbs_group -l oracle -f /tmp/p27681568_180000_Linux-x86-64.zip -d /u01/app/oracle/patch/

4. unzip the files

   dcli -l oragrid -g dbs_group unzip -oq -d <target_directory>  <patch_file>
   dcli -l oragrid -g dbs_group unzip -oq -d /u01/app/oracle/patch/  /u01/app/oracle/patch/p27681568_180000_Linux-x86-64.zip