Administration and Diagnostics Utilities - Oracle Exadata Recipes: A Problem-Solution Approach - page 157

cm01cel01: cm01cel01 online

cm01cel02: cm01cel02 online

cm01cel03: cm01cel03 online

[oracle@cm01dbm01 ~]$

The cellcli command issues above and lack of the password prompt confirmed that our SSH keys have been
stored on the storage cells.

How It Works
The dcli utility, stored in /usr/local/bin/dcli , is a Python script designed to run commands on remote servers and
is typically used in an Exadata environment to run cellcli commands. When you issue a dcli -k command, it will
append the SSH keys from the originating host and account's ~/ssh/id_dsa.pub key file to destination server(s)/
account's ~/.ssh/authorized_keys file. In the example above, we ran dcli -k as the oracle account and without a
-l option. This pushed the /home/oracle/.ssh/id_dsa.pub contents to /home/celladmin/.ssh/authorized_keys on
each server listed in the cell_group file.

7-3. Locating Key Configuration Files and Directories on the Cell
Servers
Problem
You wish to identify some of the key configuration files and directories on your Exadata storage cells in order to
confidently manage and administer your storage servers.

Solution
As an Exadata Database Machine administrator, or DMA, it is important to understand where the key software
components reside within each Exadata storage cell. Table 7-1 outlines some of the key software component
directories, files, executables, and purpose.

Table 7-1. Key software locations and executables, Exadata Storage Server
Directory/Executable/File

Purpose

/opt/oracle

Top level directory containing Oracle storage server software

/opt/oracle.cellos

Directory containing Exadata cell software and utilities

/opt/oracle.cellos/cell.conf

Cell configuration file

/opt/oracle.cellos/CheckHWnFWProfile

Utility to validate hardware profile

/opt/oracle.cellos/ExadataDiagCollector.sh

Utility to collect cell diagnostics data, valuable for SRs

/opt/oracle.cellos/functions_cellos

Contains various Cell OS function calls

/opt/oracle.cellos/imageinfo

Shows current image information

/opt/oracle.cellos/imagehistory

Shows image history

/opt/oracle.cellos/ipconf[.pl]

Displays or configures cell network environment

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