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Post date: Sep 21, 2012 12:41:50 PM
Q. What are the required and optional greenplum env variable?
Ans:
Required Environment Variables
GPHOME
This is the installed location of your Greenplum Database software. For example:
GPHOME=/usr/local/greenplum-db-4.2.x.x
export GPHOME
PATH
Your PATH environment variable should point to the location of the Greenplum Database bin directory. Solaris users must also add /usr/sfw/bin and /opt/sfw/bin to their PATH. For example:
PATH=$GPHOME/bin:$PATH
PATH=$GPHOME/bin:/usr/local/bin:/usr/sbin:/usr/sfw/bin:/opt/sfw/bin:$PATH
export PATH
LD_LIBRARY_PATH
The LD_LIBRARY_PATH environment variable should point to the location of the Greenplum Database/PostgreSQL library files. For Solaris, this also points to the GNU compiler and readline library files as well (readline libraries may be required for Python support on Solaris). For example:
LD_LIBRARY_PATH=$GPHOME/lib
LD_LIBRARY_PATH=$GPHOME/lib:/usr/sfw/lib
export LD_LIBRARY_PATH
MASTER_DATA_DIRECTORY
This should point to the directory created by the gpinitsystem utility in the master data directory location. For example:
MASTER_DATA_DIRECTORY=/data/master/gpseg-1
export MASTER_DATA_DIRECTORY
Note: GPHOME, PATH and LD_LIBRARY_PATH can be set by sourcing the greenplum_path.sh file from your Greenplum Database installation directory.
Optional Environment Variables
The following are standard PostgreSQL environment variables, which are also recognized in Greenplum Database. You may want to add the connection-related environment variables to your profile for convenience, so you do not have to type so many options on the command line for client connections. Note that these environment variables should be set on the Greenplum Database master host only.
PGAPPNAME
The name of the application that is usually set by an application when it connects to the server. This name is displayed in the activity view and in log entries. The PGAPPNAME environmental variable behaves the same as the application_name connection parameter. The default value for application_name is psql. The name cannot be longer than 63 characters.
PGDATABASE
The name of the default database to use when connecting.
PGHOST
The Greenplum Database master host name.
PGHOSTADDR
The numeric IP address of the master host. This can be set instead of or in addition to PGHOST to avoid DNS lookup overhead.
PGPASSWORD
The password used if the server demands password authentication. Use of this environment variable is not recommended for security reasons (some operating systems allow non-root users to see process environment variables via ps). Instead consider using the ~/.pgpass file.
PGPASSFILE
The name of the password file to use for lookups. If not set, it defaults to ~/.pgpass. See the section about The Password File in the PostgreSQL documentation for more information.
PGOPTIONS
Sets additional configuration parameters for the Greenplum Database master server.
PGPORT
The port number of the Greenplum Database server on the master host. The default port is 5432.
PGUSER
The Greenplum Database user name used to connect.
PGDATESTYLE
Sets the default style of date/time representation for a session. (Equivalent to SET datestyle TO ....)
PGTZ
Sets the default time zone for a session. (Equivalent to SET timezone TO ....)
PGCLIENTENCODING
Sets the default client character set encoding for a session. (Equivalent to SET client_encoding TO ....)