gpperfmon_install

Installs the Command Center database (gpperfmon) and optionally enables the data collection agents.

gpperfmon_install --port <gpdb_port>
   [--enable --password <gpmon_password> [--pgpass <path_to_file>] [–verbose]

gpperfmon_install --help | -h | -?

Option	Description
–enable	In addition to creating the `gpperfmon` database, performs the additional steps required to enable the Command Center data collection agents. When `--enable` is specified the utility also creates and configure the gpmon superuser account and sets the Command Center server configuration parameters in the `postgresql.conf` files.
–password gpmon_password	Required if `--enable` is specified. Sets the password of the gpmon superuser
–port gpdb_port	Required. Specifies the connection port of the Greenplum Database master.
–pgpass path_to_file	Optional if `--enable` is specified. If the password file is not in the default location of `~/.pgpass`, specifies the location of the password file.
–verbose	Sets the logging level to verbose.
–help \| -h \| -?	Displays the online help.

Description

The gpperfmon_install utility automates the steps to enable the Command Center data collection agents. You must be the Greenplum system user (gpadmin) to run this utility. If using the --enable option, the Greenplum Database instance must be restarted after the utility completes.

When run without any options, the utility just creates the Command Center database (gpperfmon). When run with the --enable option, the utility also performs the following additional tasks necessary to enable the Command Center data collection agents:

Creates the gpmon superuser role in Greenplum Database. The Command Center data collection agents require this role to connect to the database and write their data. The gpmon superuser role uses MD5-encrypted password authentication by default. Use the –password option to set the gpmon superuser’s password. Use the --port option to supply the port of the Greenplum Database master instance.
Updates the $MASTER_DATA_DIRECTORY/pg_hba.conf file. The utility adds the following lines to the host-based authentication file (pg_hba.conf). This allows the gpmon user to locally connect to any database using MD5-encrypted password authentication:
```
local      gpperfmon     gpmon                 md5
host       all           gpmon  127.0.0.1/28   md5
host       all           gpmon  ::1/128        md5
```
Updates the password file (.pgpass). In order to allow the data collection agents to connect as the gpmon role without a password prompt, you must have a password file that has an entry for the gpmon user. The utility adds the following entry to your password file (if the file does not exist, the utility creates it):
```
*:5432:gpperfmon:gpmon:gpmon_password
```
If your password file is not located in the default location (~/.pgpass), use the --pgpass option to specify the file location.
Sets the server configuration parameters for Command Center. The following parameters must be enabled in order for the data collection agents to begin collecting data. The utility sets the following parameters in the postgresql.conf configuration files:
- gp_enable_gpperfmon=on (in all postgresql.conf files)
- gpperfmon_port=8888 (in all postgresql.conf files)
- gp_external_enable_exec=on (in the master postgresql.conf file)

Greenplum Command Center requires the gpmon role and the gpperfmon database to use the host’s default timezone. If you have already changed the default timezone for gpmon or gpperfmon, execute the following commands in `psql` to reset them.

alter user gpmon reset timezone;
alter database gpperfmon reset timezone;

Then restart the Greenplum Command Center instance:

$ gpcmdr --restart <instance-name>

Examples

Create the Command Center database (gpperfmon) only:

$ su - gpadmin
$ gpperfmon_install --port 5432

Create the Command Center database (gpperfmon), create the gpmon superuser, and enable the Command Center agents:

$ su - gpadmin
$ gpperfmon_install --enable --password changeme --port 5432
$ gpstop -r