Installing Greenplum Database

Note:

Installing Greenplum Community edition (CE). Here are the step by step  instructions on how to install the Greenplum Database CE software and get your single-node Greenplum Database system up and running. 

Before installing we have to change following OS configuration parameters:
----------------
LINUX
---------------
In /etc/sysctl.conf: 

sysctl.kernel.shmmax = 500000000
sysctl.kernel.shmmni = 4096
sysctl.kernel.shmall = 4000000000
sysctl.kernel.sem = 250 512000 100 2048
sysctl.kernel.sysrq = 1
sysctl.kernel.core_uses_pid = 1
sysctl.kernel.msgmnb = 65536
sysctl.kernel.msgmax = 65536
sysctl.kernel.msgmni = 2048
sysctl.net.ipv4.tcp_syncookies = 1
sysctl.net.ipv4.ip_forward = 0
sysctl.net.ipv4.conf.default.accept_source_route = 0
sysctl.net.ipv4.tcp_tw_recycle = 1
sysctl.net.ipv4.tcp_max_syn_backlog = 4096
sysctl.net.ipv4.conf.all.arp_filter = 1
sysctl.net.ipv4.ip_local_port_range = 1025 65535
sysctl.net.core.netdev_max_backlog = 10000
sysctl.vm.overcommit_memory = 2

For RHEL version 6.x platforms, do not include the sysctl. prefix in the above parameters, as follows:

xfs_mount_options = rw,noatime,inode64,allocsize=16m
kernel.shmmax = 500000000
kernel.shmmni = 4096
kernel.shmall = 4000000000
kernel.sem = 250 512000 100 2048
kernel.sysrq = 1
kernel.core_uses_pid = 1
kernel.msgmnb = 65536
kernel.msgmax = 65536
kernel.msgmni = 2048
net.ipv4.tcp_syncookies = 1
net.ipv4.ip_forward = 0
net.ipv4.conf.default.accept_source_route = 0
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_max_syn_backlog = 4096
net.ipv4.conf.all.arp_filter = 1
net.ipv4.ip_local_port_range = 1025 65535
net.core.netdev_max_backlog = 10000
vm.overcommit_memory = 2

In /etc/security/limits.conf: 

* soft nofile 65536  
* hard nofile 65536  
* soft nproc 131072 
* hard nproc 131072 

OPTIONAL
==================================================================================================================
In /etc/hosts:
Include the host names and all interface address names for every machine participating in your Greenplum Database system.
File system recommendations: XFS is the preferred file system on Linux platforms for data storage. Greenplum recommends the following xfs mount options:
rw,noatime,inode64,allocsize=16m
Also, each disk device file should have a read-ahead value of 16384.  For example, to verify the read-ahead value of a disk device:
# /sbin/blockdev --getra /dev/sdb
=================================================================================================================


Add the Greenplum database Admin account:
# useradd gpadmin
# passwd gpadmin
# New password: password
# Retype new password: password
You cannot run the Greenplum Database SNE server as root. While dealing with Greenplum use this newly created user account


Installing the Greenplum Database Community edition (CE):

1. Download or copy the Greenplum Database CE from www.greenplum.com/

2. Unzip the installer file:
# unzip greenplum-db-4.2.2.4-build-1-CE-RHEL5-x86_64.bin

3. Launch the installer using bash:
# /bin/bash greenplum-db-4.0.0.0-build-#-SingleNodeEdition-PLATFORM.bin

4. The installer prompts you to provide an installation path. Press ENTER to accept the default install path (/usr/local/greenplum-db-4.0.0.0), or enter new path

5. The installer installs the Greenplum Database CE software and creates a greenplum-db symbolic link one directory level above your version-specific Greenplum Database 

6. Change the ownership of your Greenplum Database SNE installation so that it is owned by the gpadmin
# chown -R gpadmin /usr/local/greenplum-db-4.0.0.0
# chgrp -R gpadmin /usr/local/greenplum-db-4.0.0.0

7. Preparing the Data Directory Locations
Every Greenplum Database SNE instance has a designated storage area on disk that is called the data directory location.

8. Create or choose a directory that will serve as your master data storage area
On this location user data is not stored, instead metadata (data about the data) is stored. Here global system catalog resides
# mkdir /gpmaster
# chown gpadmin /gpmaster
# chgrp gpadmin /gpmaster

9. Create or choose the directories that will serve as your segment storage areas:
This is the file system location where the database data is stored.
# mkdir /gpdata1
# chown gpadmin /gpdata1
# chgrp gpadmin /gpdata1
# mkdir /gpdata2
# chown gpadmin /gpdata2
# chgrp gpadmin /gpdata2

10. Configuring Greenplum Database SNE / CE Environment Variables:
$ vi .bashrc
Then add following entry
source /usr/local/greenplum-db/greenplum_path.sh
now source it
$ source ~/.bashrc

11. Now let’s initialize Greenplum database:
Greenplum provides a utility called gpinitsystem which initializes a Greenplum Database system. After the Greenplum Database SNE system is initialized and started, you can then create and manage databases by connecting to the Greenplum master database process.

12. Log in to the system as the gpadmin user:
# su - gpadmin

13. Copy the single_hostlist example file from your Greenplum Database installation to the current directory:
$ cp /usr/local/greenplum-db/docs/cli_help/gpconfigs/hostlist_singlenode .

14. Copy the gp_init_singlenode example file from your Greenplum Database SNE installation to the current directory:
$ cp /usr/local/greenplum-db/docs/cli_help/gpconfigs/gpinitsystem_singlenode .

15. Edit the gp_init_singlenode file and enter your configuration settings, you can remain them default. Some default parameters in this file are:
ARRAY_NAME="GPDB SNE"
MACHINE_LIST_FILE=./hostlist_singlenode
SEG_PREFIX=gpsne
PORT_BASE=50000
declare -a DATA_DIRECTORY=(/disk1/gpdata1 /disk2//gpdata2)
MASTER_HOSTNAME=sachi
MASTER_DIRECTORY=/home/gpmaster
MASTER_PORT=5432

16. Run the gpssh-exkeys utility to exchange ssh keys for the local host:
$ gpssh-exkeys -h sachi

[gpadmin@dbaref ~]$  gpssh-exkeys -h dbaref
[STEP 1 of 5] create local ID and authorize on local host
[ERROR dbaref] authentication check failed:
     ssh: connect to host dbaref port 22: Connection refused
[ERROR] cannot establish ssh access into the local host

to overcome this issue
1. Disable firewall
2. start sshd service if not started

[root@dbaref Downloads]# /sbin/service sshd status
Redirecting to /bin/systemctl  status sshd.service
sshd.service - OpenSSH server daemon.
      Loaded: loaded (/lib/systemd/system/sshd.service; disabled)
      Active: inactive (dead)
      CGroup: name=systemd:/system/sshd.service
[root@dbaref Downloads]# /sbin/service sshd start
Redirecting to /bin/systemctl  start sshd.service
[root@dbaref Downloads]# /sbin/service sshd status
Redirecting to /bin/systemctl  status sshd.service
sshd.service - OpenSSH server daemon.
      Loaded: loaded (/lib/systemd/system/sshd.service; disabled)
      Active: active (running) since Mon, 20 May 2013 08:45:07 -0400; 5s ago
    Main PID: 2764 (sshd)
      CGroup: name=systemd:/system/sshd.service
          └ 2764 /usr/sbin/sshd -D
[root@dbaref Downloads]# 

Now su to gpadmin and run it again

[gpadmin@dbaref ~]$  gpssh-exkeys -h dbaref
[STEP 1 of 5] create local ID and authorize on local host
  ... /home/gpadmin/.ssh/id_rsa file exists ... key generation skipped

[STEP 2 of 5] keyscan all hosts and update known_hosts file

[STEP 3 of 5] authorize current user on remote hosts

[STEP 4 of 5] determine common authentication file content

[STEP 5 of 5] copy authentication files to all remote hosts

[INFO] completed successfully
[gpadmin@dbaref ~]$ 
======================================================================
Note: I have struggled with this many times. Here is one more option.
[root@sachi ~]# mkdir /etc/ssh/gpadmin
[root@sachi ~]# cp /home/gpadmin/.ssh/authorized_keys /etc/ssh/gpadmin/
[root@sachi ~]# chown -R gpadmin:gpadmin /etc/ssh/gpadmin
[root@sachi ~]# chmod 755 /etc/ssh/gpadmin
[root@sachi ~]# chmod 644 /etc/ssh/gpadmin/authorized_keys
[root@sachi ~]# vi /etc/ssh/sshd_config 
#RSAAuthentication yes
#PubkeyAuthentication yes
# changed .ssh/authorized_keys to /etc/ssh/gpadmin/authorized_keys <<<<<<<
AuthorizedKeysFile      /etc/ssh/gpadmin/authorized_keys
#AuthorizedKeysCommand none
#AuthorizedKeysCommandRunAs nobody

Reboot the server
======================================================================

17. initialize Greenplum Database SNE:
$ gpinitsystem -c gpinitsystem_singlenode

[gpadmin@sachi ~]$ gpinitsystem -c gpinitsystem_singlenode 
20130423:19:53:54:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Checking configuration parameters, please wait...
20130423:19:53:54:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Reading Greenplum configuration file gpinitsystem_singlenode
20130423:19:53:54:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Locale has not been set in gpinitsystem_singlenode, will set to default value
20130423:19:53:55:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Locale set to en_US.utf8
20130423:19:53:55:004006 gpinitsystem:sachi:gpadmin-[INFO]:-No DATABASE_NAME set, will exit following template1 updates
20130423:19:53:55:004006 gpinitsystem:sachi:gpadmin-[INFO]:-MASTER_MAX_CONNECT not set, will set to default value 250
20130423:19:53:55:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Detected a single host GPDB array build, reducing value of BATCH_DEFAULT from 60 to 4
20130423:19:53:55:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Checking configuration parameters, Completed
20130423:19:53:55:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Commencing multi-home checks, please wait...
.
20130423:19:53:55:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Configuring build for standard array
20130423:19:53:55:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Commencing multi-home checks, Completed
20130423:19:53:55:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Building primary segment instance array, please wait...
..
20130423:19:53:56:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Checking Master host
20130423:19:53:56:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Checking new segment hosts, please wait...
..
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Checking new segment hosts, Completed
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Greenplum Database Creation Parameters
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:---------------------------------------
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Master Configuration
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:---------------------------------------
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Master instance name       = GPDB SINGLENODE
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Master hostname            = sachi
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Master port                = 5432
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Master instance dir        = /home/gpmaster/gpsne-1
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Master LOCALE              = en_US.utf8
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Greenplum segment prefix   = gpsne
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Master Database            = 
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Master connections         = 250
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Master buffers             = 128000kB
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Segment connections        = 750
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Segment buffers            = 128000kB
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Checkpoint segments        = 8
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Encoding                   = UNICODE
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Postgres param file        = Off
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Initdb to be used          = /usr/local/greenplum-db/./bin/initdb
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-GP_LIBRARY_PATH is         = /usr/local/greenplum-db/./lib
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Ulimit check               = Passed
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Array host connect type    = Single hostname per node
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Master IP address [1]      = ::1
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Master IP address [2]      = 172.16.72.1
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Master IP address [3]      = 192.168.122.1
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Master IP address [4]      = 192.168.133.1
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Master IP address [5]      = 192.168.1.6
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Master IP address [6]      = fe80::250:56ff:fec0:1
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Master IP address [7]      = fe80::250:56ff:fec0:8
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Master IP address [8]      = fe80::8e89:a5ff:fe80:f8e6
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Standby Master             = Not Configured
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Primary segment #          = 2
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Total Database segments    = 2
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Trusted shell              = ssh
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Number segment hosts       = 1
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Mirroring config           = OFF
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:----------------------------------------
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Greenplum Primary Segment Configuration
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:----------------------------------------
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-sachi     /disk1/gpdata1/gpsne0     40000     2     0
20130423:19:53:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-sachi     /disk2/gpdata2/gpsne1     40001     3     1
Continue with Greenplum creation Yy/Nn>
Y
20130423:19:54:13:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Building the Master instance database, please wait...
20130423:19:55:19:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Starting the Master in admin mode
20130423:19:55:39:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Commencing parallel build of primary segment instances
20130423:19:55:39:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Spawning parallel processes    batch [1], please wait...
..
20130423:19:55:39:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Waiting for parallel processes batch [1], please wait...
...........................................................................................................................................
20130423:19:57:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:------------------------------------------------
20130423:19:57:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Parallel process exit status
20130423:19:57:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:------------------------------------------------
20130423:19:57:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Total processes marked as completed           = 2
20130423:19:57:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Total processes marked as killed              = 0
20130423:19:57:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Total processes marked as failed              = 0
20130423:19:57:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:------------------------------------------------
20130423:19:57:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Deleting distributed backout files
20130423:19:57:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Removing back out file
20130423:19:57:59:004006 gpinitsystem:sachi:gpadmin-[INFO]:-No errors generated from parallel processes
20130423:19:58:00:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Restarting the Greenplum instance in production mode
20130423:19:58:00:016987 gpstop:sachi:gpadmin-[INFO]:-Starting gpstop with args: -a -i -m -d /home/gpmaster/gpsne-1
20130423:19:58:00:016987 gpstop:sachi:gpadmin-[INFO]:-Gathering information and validating the environment...
20130423:19:58:00:016987 gpstop:sachi:gpadmin-[INFO]:-Obtaining Greenplum Master catalog information
20130423:19:58:00:016987 gpstop:sachi:gpadmin-[INFO]:-Obtaining Segment details from master...
20130423:19:58:00:016987 gpstop:sachi:gpadmin-[INFO]:-Greenplum Version: 'postgres (Greenplum Database) 4.2.2.4 build 1 Community Edition'
20130423:19:58:00:016987 gpstop:sachi:gpadmin-[INFO]:-There are 0 connections to the database
20130423:19:58:00:016987 gpstop:sachi:gpadmin-[INFO]:-Commencing Master instance shutdown with mode='immediate'
20130423:19:58:00:016987 gpstop:sachi:gpadmin-[INFO]:-Master host=sachi
20130423:19:58:00:016987 gpstop:sachi:gpadmin-[INFO]:-Commencing Master instance shutdown with mode=immediate
20130423:19:58:00:016987 gpstop:sachi:gpadmin-[INFO]:-Master segment instance directory=/home/gpmaster/gpsne-1
20130423:19:58:01:017070 gpstart:sachi:gpadmin-[INFO]:-Starting gpstart with args: -a -d /home/gpmaster/gpsne-1
20130423:19:58:01:017070 gpstart:sachi:gpadmin-[INFO]:-Gathering information and validating the environment...
20130423:19:58:01:017070 gpstart:sachi:gpadmin-[INFO]:-Greenplum Binary Version: 'postgres (Greenplum Database) 4.2.2.4 build 1 Community Edition'
20130423:19:58:01:017070 gpstart:sachi:gpadmin-[INFO]:-Greenplum Catalog Version: '201109210'
20130423:19:58:01:017070 gpstart:sachi:gpadmin-[INFO]:-Starting Master instance in admin mode
20130423:19:58:02:017070 gpstart:sachi:gpadmin-[INFO]:-Obtaining Greenplum Master catalog information
20130423:19:58:02:017070 gpstart:sachi:gpadmin-[INFO]:-Obtaining Segment details from master...
20130423:19:58:02:017070 gpstart:sachi:gpadmin-[INFO]:-Setting new master era
20130423:19:58:02:017070 gpstart:sachi:gpadmin-[INFO]:-Master Started...
20130423:19:58:02:017070 gpstart:sachi:gpadmin-[INFO]:-Checking for filespace consistency
20130423:19:58:02:017070 gpstart:sachi:gpadmin-[INFO]:-Obtaining current filespace entries used by TRANSACTION_FILES
20130423:19:58:02:017070 gpstart:sachi:gpadmin-[INFO]:-TRANSACTION_FILES OIDs are consistent for pg_system filespace
20130423:19:58:03:017070 gpstart:sachi:gpadmin-[INFO]:-TRANSACTION_FILES entries are consistent for pg_system filespace
20130423:19:58:03:017070 gpstart:sachi:gpadmin-[INFO]:-Checking for filespace consistency
20130423:19:58:03:017070 gpstart:sachi:gpadmin-[INFO]:-Obtaining current filespace entries used by TEMPORARY_FILES
20130423:19:58:03:017070 gpstart:sachi:gpadmin-[INFO]:-TEMPORARY_FILES OIDs are consistent for pg_system filespace
20130423:19:58:03:017070 gpstart:sachi:gpadmin-[INFO]:-TEMPORARY_FILES entries are consistent for pg_system filespace
20130423:19:58:03:017070 gpstart:sachi:gpadmin-[INFO]:-Shutting down master
20130423:19:58:04:017070 gpstart:sachi:gpadmin-[INFO]:-No standby master configured.  skipping...
20130423:19:58:04:017070 gpstart:sachi:gpadmin-[INFO]:-Commencing parallel segment instance startup, please wait...
20130423:19:58:06:017070 gpstart:sachi:gpadmin-[INFO]:-Process results...
20130423:19:58:06:017070 gpstart:sachi:gpadmin-[INFO]:-----------------------------------------------------
20130423:19:58:06:017070 gpstart:sachi:gpadmin-[INFO]:-   Successful segment starts                                            = 2
20130423:19:58:06:017070 gpstart:sachi:gpadmin-[INFO]:-   Failed segment starts                                                = 0
20130423:19:58:06:017070 gpstart:sachi:gpadmin-[INFO]:-   Skipped segment starts (segments are marked down in configuration)   = 0
20130423:19:58:06:017070 gpstart:sachi:gpadmin-[INFO]:-----------------------------------------------------
20130423:19:58:06:017070 gpstart:sachi:gpadmin-[INFO]:-
20130423:19:58:06:017070 gpstart:sachi:gpadmin-[INFO]:-Successfully started 2 of 2 segment instances 
20130423:19:58:06:017070 gpstart:sachi:gpadmin-[INFO]:-----------------------------------------------------
20130423:19:58:06:017070 gpstart:sachi:gpadmin-[INFO]:-Starting Master instance sachi directory /home/gpmaster/gpsne-1 
20130423:19:58:08:017070 gpstart:sachi:gpadmin-[INFO]:-Command pg_ctl reports Master sachi instance active
20130423:19:58:08:017070 gpstart:sachi:gpadmin-[INFO]:-Database successfully started
20130423:19:58:08:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Completed restart of Greenplum instance in production mode
20130423:19:58:08:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Loading gp_toolkit...
20130423:19:58:10:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Scanning utility log file for any warning messages
20130423:19:58:10:004006 gpinitsystem:sachi:gpadmin-[WARN]:-*******************************************************
20130423:19:58:10:004006 gpinitsystem:sachi:gpadmin-[WARN]:-Scan of log file indicates that some warnings or errors
20130423:19:58:10:004006 gpinitsystem:sachi:gpadmin-[WARN]:-were generated during the array creation
20130423:19:58:10:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Please review contents of log file
20130423:19:58:10:004006 gpinitsystem:sachi:gpadmin-[INFO]:-/home/gpadmin/gpAdminLogs/gpinitsystem_20130423.log
20130423:19:58:10:004006 gpinitsystem:sachi:gpadmin-[INFO]:-To determine level of criticality
20130423:19:58:10:004006 gpinitsystem:sachi:gpadmin-[WARN]:-*******************************************************
20130423:19:58:10:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Greenplum Database instance successfully created
20130423:19:58:10:004006 gpinitsystem:sachi:gpadmin-[INFO]:-------------------------------------------------------
20130423:19:58:10:004006 gpinitsystem:sachi:gpadmin-[INFO]:-To complete the environment configuration, please 
20130423:19:58:10:004006 gpinitsystem:sachi:gpadmin-[INFO]:-update gpadmin .bashrc file with the following
20130423:19:58:10:004006 gpinitsystem:sachi:gpadmin-[INFO]:-1. Ensure that the greenplum_path.sh file is sourced
20130423:19:58:10:004006 gpinitsystem:sachi:gpadmin-[INFO]:-2. Add "export MASTER_DATA_DIRECTORY=/home/gpmaster/gpsne-1"
20130423:19:58:10:004006 gpinitsystem:sachi:gpadmin-[INFO]:-   to access the Greenplum scripts for this instance:
20130423:19:58:10:004006 gpinitsystem:sachi:gpadmin-[INFO]:-   or, use -d /home/gpmaster/gpsne-1 option for the Greenplum scripts
20130423:19:58:10:004006 gpinitsystem:sachi:gpadmin-[INFO]:-   Example gpstate -d /home/gpmaster/gpsne-1
20130423:19:58:10:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Script log file = /home/gpadmin/gpAdminLogs/gpinitsystem_20130423.log
20130423:19:58:10:004006 gpinitsystem:sachi:gpadmin-[INFO]:-To remove instance, run gpdeletesystem utility
20130423:19:58:10:004006 gpinitsystem:sachi:gpadmin-[INFO]:-To initialize a Standby Master Segment for this Greenplum instance
20130423:19:58:10:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Review options for gpinitstandby
20130423:19:58:10:004006 gpinitsystem:sachi:gpadmin-[INFO]:-------------------------------------------------------
20130423:19:58:10:004006 gpinitsystem:sachi:gpadmin-[INFO]:-The Master /home/gpmaster/gpsne-1/pg_hba.conf post gpinitsystem
20130423:19:58:10:004006 gpinitsystem:sachi:gpadmin-[INFO]:-has been configured to allow all hosts within this new
20130423:19:58:10:004006 gpinitsystem:sachi:gpadmin-[INFO]:-array to intercommunicate. Any hosts external to this
20130423:19:58:10:004006 gpinitsystem:sachi:gpadmin-[INFO]:-new array must be explicitly added to this file
20130423:19:58:10:004006 gpinitsystem:sachi:gpadmin-[INFO]:-Refer to the Greenplum Admin support guide which is
20130423:19:58:10:004006 gpinitsystem:sachi:gpadmin-[INFO]:-located in the /usr/local/greenplum-db/./docs directory
20130423:19:58:10:004006 gpinitsystem:sachi:gpadmin-[INFO]:-------------------------------------------------------
[gpadmin@sachi ~]$ pwd
/home/gpadmin
[gpadmin@sachi ~]$ 

18. After the Greenplum Database SNE system is initialized and started, you can connect to the Greenplum master database process using the psql client program:
$ createdb mydb
$ psql mydb

19. Now export master data directory:
$ vi .bashrc
Then add following entry
export MASTER_DATA_DIRECTORY=/gpmaster/gpsne-1
now source it
$ source ~/.bashrc

20. Now you can perform any database operations using psql program (DDL, DML)
Uninstall Greenplum:
To uninstall run the following commands:

$ gpdeletesystem -d /gpmaster/gpsne-1
$ rm -rf /usr/local/greenplum-db-4.0.0.0
$ rm /usr/local/greenplum-db
You can remove the environment variable and restore the default setting of OS parameters(Optional)


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