Greenplum Database Ports and Protocols
A newer version of this documentation is available. Use the version menu above to view the most up-to-date release of the Greenplum 5.x documentation.
Greenplum Database Ports and Protocols
Lists network ports and protocols used within the Greenplum cluster.
Greenplum Database clients connect with TCP to the Greenplum master instance at the client connection port, 5432 by default. The listen port can be reconfigured in the postgresql.conf configuration file. Client connections use the PostgreSQL libpq API. The psql command-line interface, several Greenplum utilities, and language-specific programming APIs all either use the libpq library directly or implement the libpq protocol internally.
[gpadmin@mdw ~]$ gpstate -p 20160126:15:40:22:028389 gpstate:mdw:gpadmin-[INFO]:-Starting gpstate with args: -p 20160126:15:40:22:028389 gpstate:mdw:gpadmin-[INFO]:-local Greenplum Version: 'postgres (Greenplum Database) 22.214.171.124 build 62994' 20160126:15:40:22:028389 gpstate:mdw:gpadmin-[INFO]:-master Greenplum Version: 'PostgreSQL 8.2.15 (Greenplum Database 126.96.36.199 build 62994) on x86_64-unknown-linux-gnu, compiled by GCC gcc (GCC) 4.4.2 compiled on Jul 24 2015 11:35:08' 20160126:15:40:22:028389 gpstate:mdw:gpadmin-[INFO]:-Obtaining Segment details from master... 20160126:15:40:22:028389 gpstate:mdw:gpadmin-[INFO]:--Master segment instance /data/master/gpseg-1 port = 5432 20160126:15:40:22:028389 gpstate:mdw:gpadmin-[INFO]:--Segment instance port assignments 20160126:15:40:22:028389 gpstate:mdw:gpadmin-[INFO]:----------------------------------- 20160126:15:40:22:028389 gpstate:mdw:gpadmin-[INFO]:- Host Datadir Port 20160126:15:40:22:028389 gpstate:mdw:gpadmin-[INFO]:- sdw1 /data/primary/gpseg0 40000 20160126:15:40:22:028389 gpstate:mdw:gpadmin-[INFO]:- sdw2 /data/mirror/gpseg0 50000 20160126:15:40:22:028389 gpstate:mdw:gpadmin-[INFO]:- sdw2 /data/primary/gpseg1 40000 20160126:15:40:22:028389 gpstate:mdw:gpadmin-[INFO]:- sdw1 /data/mirror/gpseg1 50001 20160126:15:40:22:028389 gpstate:mdw:gpadmin-[INFO]:- sdw3 /data/primary/gpseg2 40000 20160126:15:40:22:028389 gpstate:mdw:gpadmin-[INFO]:- sdw4 /data/mirror/gpseg2 50000 20160126:15:40:22:028389 gpstate:mdw:gpadmin-[INFO]:- sdw4 /data/primary/gpseg3 40000 20160126:15:40:22:028389 gpstate:mdw:gpadmin-[INFO]:- sdw3 /data/mirror/gpseg3 50001
Additional Greenplum Database network connections are created for features such as standby replication, segment mirroring, statistics collection, and data exchange between segments. Some persistent connections are established when the database starts up and other transient connections are created during operations such as query execution. Transient connections for query execution processes, data movement, and statistics collection use available ports in the range 1025 to 65535 with both TCP and UDP protocols.
Some add-on products and services that work with Greenplum Database have additional networking requirements. The following table lists ports and protocols used within the Greenplum cluster, and includes services and applications that integrate with Greenplum Database.
|Master SQL client connection||TCP 5432, libpq||SQL client connection port on the Greenplum master host. Supports clients using the PostgreSQL libpq API. Configurable.|
|Segment SQL client connection||varies, libpq||The SQL client connection port for a segment instance. Each primary and mirror segment on a host must have a unique port. Ports are assigned when the Greenplum system is initialized or expanded. The gp_segment_configuration system catalog records port numbers for each segment in the port column. Run gpstate -p to view the ports in use.|
|Segment mirroring port||varies, libpq||The port where a segment receives mirrored blocks from its primary. The port is assigned when the mirror is set up. The port number is stored in the gp_segment_configuration system catalog in the mirror_port column.|
|Greenplum Database Interconnect||UDP 1025-65535, dynamically allocated||The Interconnect transports database tuples between Greenplum segments during query execution.|
|Standby master client listener||TCP 5432, libpq||SQL client connection port on the standby master host. Usually the same as the master client connection port. Configure with the gpinitstandby utility -P option.|
|Standby master replicator||TCP 1025-65535, gpsyncmaster||The gpsyncmaster process on the master host establishes a connection to the secondary master host to replicate the master's log to the standby master.|
|Greenplum Control Center (GPCC)||TCP 28080, HTTP/HTTPS||Default listen port for the GPCC console web server, which is usually installed on the master host. Configured in the lighttpd.conf file in the GPCC instance.|
|Greenplum database file load and transfer utilities: gpfdist, gpload, gptransfer||TCP 8080, HTTP
TCP 9000, HTTPS
|The gpfdist file serving utility can run on Greenplum hosts or external hosts.
Specify the connection port with the -p option when starting the
The gpload and gptransfer utilities run one or more instances of gpfdist with ports or port ranges specified in a configuration file.
|GPCC agents||TCP 8888||Connection port for GPCC agents executing on each Greenplum host. Configure by setting the gpperfmon_port configuration variable in postgresql.conf on master and segment hosts.|
|Backup completion notification||TCP 25, TCP 587, SMTP||The gpcrondump backup utility can optionally send email to a list of email addresses at completion of a backup. The SMTP service must be enabled on the Greenplum master host.|
|Greenplum Database secure shell (SSH): gpssh, gpscp, gpssh-exkeys, gppkg, gpseginstall||TCP 22, SSH||Many Greenplum utilities use scp and ssh to transfer files between hosts and manage the Greenplum system within the cluster.|
|gphdfs||TCP 8020||The gphdfs protocol allows access to data in a Hadoop file system via Greenplum external tables. The URL in the LOCATION clause of the CREATE EXTERNAL TABLE command specifies the host address and port number for the Hadoop namenode service.|
|Greenplum Workload Manager (GP-WLM)||TCP 4369, epmd||Erlang port mapper (epmd) allows nodes in the cluster to resolve node names.|
|TCP 25672||rabbitmq clustering|
|TCP 7777||rabbitmq main port|
|EMC Data Domain and DD Boost||TCP/UDP 111, NFS portmapper||Used to assign a random port for the mountd service used by NFS and DD Boost. The mountd service port can be statically assigned on the Data Domain server.|
|TCP 2052||Main port used by NFS mountd. This port can be set on the Data Domain system using the nfs set mountd-port command .|
|TCP 2049, NFS||Main port used by NFS. This port can be configured using the nfs set server-port command on the Data Domain server.|
|TCP 2051, replication||Used when replication is configured on the Data Domain system. This port can be configured using the replication modify command on the Data Domain server.|
|Symantec NetBackup||TCP/UDB 1556, veritas-pbx||The Symantec NetBackup client network port.|
|TCP 13724, vnetd||Symantec NetBackup vnetd communication port.|
|Pgbouncer connection pooler||TCP, libpq||The pgbouncer connection pooler runs between libpq clients and Greenplum (or PostgreSQL) databases. It can be run on the Greenplum master host, but running it on a host outside of the Greenplum cluster is recommended. When it runs on a separate host, pgbouncer can act as a warm standby mechanism for the Greenplum master host, switching to the Greenplum standby host without requiring clients to reconfigure. Set the client connection port and the Greenplum master host address and port in the pgbouncer.ini configuration file.|
|stunnel SSL proxy||TCP, ssh, libpq||A stunnel SSL proxy can be used to add SSL support for database clients accessing the database through a pgbouncer connection pool. A secure tunnel can be set up by setting up stunnel on the client and the pgbouncer host. Newer versions of stunnel that support encrypted libpq connections only require stunnel on the pgbouncer host. The stunnel proxy's connection ports and the pgbouncer host and port are specified in the stunnel.conf configuration file.|