Shows the status of a running Greenplum Database system.
gpstate [-d master_data_directory] [-B parallel_processes] [-s | -b | -Q | -e] [-m | -c] [-p] [-i] [-f] [-v | -q] [-l log_directory] gpstate -? | -h | --help
The gpstate utility displays information about a running Greenplum Database instance. There is additional information you may want to know about a Greenplum Database system, since it is comprised of multiple PostgreSQL database instances (segments) spanning multiple machines. The gpstate utility provides additional status information for a Greenplum Database system, such as:
- Which segments are down.
- Master and segment configuration information (hosts, data directories, etc.).
- The ports used by the system.
- A mapping of primary segments to their corresponding mirror segments.
- -b (brief status)
- Optional. Display a brief summary of the state of the Greenplum Database system. This is the default option.
- -B parallel_processes
- The number of segments to check in parallel. If not specified, the utility will start up to 60 parallel processes depending on how many segment instances it needs to check.
- -c (show primary to mirror mappings)
- Optional. Display mapping of primary segments to their corresponding mirror segments.
- -d master_data_directory
- Optional. The master data directory. If not specified, the value set for $MASTER_DATA_DIRECTORY will be used.
- -e (show segments with mirror status issues)
- Show details on primary/mirror segment pairs that have potential issues such as 1) the active segment is running in change tracking mode, meaning a segment is down 2) the active segment is in resynchronization mode, meaning it is catching up changes to the mirror 3) a segment is not in its preferred role, for example a segment that was a primary at system initialization time is now acting as a mirror, meaning you may have one or more segment hosts with unbalanced processing load.
- -f (show standby master details)
- Display details of the standby master host if configured.
- -i (show Greenplum Database version)
- Display the Greenplum Database software version information for each instance.
- -l logfile_directory
- The directory to write the log file. Defaults to ~/gpAdminLogs.
- -m (list mirrors)
- Optional. List the mirror segment instances in the system, their current role, and synchronization status.
- -p (show ports)
- List the port numbers used throughout the Greenplum Database system.
- -q (no screen output)
- Optional. Run in quiet mode. Except for warning messages, command output is not displayed on the screen. However, this information is still written to the log file.
- -Q (quick status)
- Optional. Checks segment status in the system catalog on the master host. Does not poll the segments for status.
- -s (detailed status)
- Optional. Displays detailed status information for the Greenplum Database system.
- -v (verbose output)
- Optional. Displays error messages and outputs detailed status and progress information.
- -? | -h | --help (help)
- Displays the online help.
Output Field Definitions
The following output fields are reported by gpstate -s for the master:
|Master host||host name of the master|
|Master postgres process ID||PID of the master database listener process|
|Master data directory||file system location of the master data directory|
|Master port||port of the master postgres database listener process|
|Master current role||dispatch = regular operating mode
utility = maintenance mode
|Greenplum array configuration type||Standard = one NIC per host
Multi-Home = multiple NICs per host
|Greenplum initsystem version||version of Greenplum Database when system was first initialized|
|Greenplum current version||current version of Greenplum Database|
|Postgres version||version of PostgreSQL that Greenplum Database is based on|
|Greenplum mirroring status||physical mirroring, SAN or none|
|Master standby||host name of the standby master|
|Standby master state||status of the standby master: active or passive|
The following output fields are reported by gpstate -s for each segment:
|Hostname||system-configured host name|
|Address||network address host name (NIC name)|
|Datadir||file system location of segment data directory|
|Port||port number of segment postgres database listener process|
|Current Role||current role of a segment: Mirror or Primary|
|Preferred Role||role at system initialization time: Mirror or Primary|
|Mirror Status||status of a primary/mirror segment
Synchronized = data is up to date on both
Resynchronization = data is currently being copied from one to the other
Change Tracking = segment down and active segment is logging changes
|Change tracking data size||when in Change Tracking mode, the size of the change log file (may grow and shrink as compression is applied)|
|Estimated total data to synchronize||when in Resynchronization mode, the estimated size of data left to syncronize|
|Data synchronized||when in Resynchronization mode, the estimated size of data that has already been syncronized|
|Estimated resync progress with mirror||When in Resynchronization mode, the estimated percentage of completion|
|Estimated resync end time||when in Resynchronization mode, the estimated time to complete|
|File postmaster.pid||status of postmaster.pid lock file: Found or Missing|
|PID from postmaster.pid file||PID found in the postmaster.pid file|
|Lock files in /tmp||a segment port lock file for its postgres process is created in /tmp (file is removed when a segment shuts down)|
|Active PID||active process ID of a segment|
|Master reports status as||segment status as reported in the system catalog: Up or Down|
|Database status||status of Greenplum Database to incoming requests: Up, Down, or Suspended. A Suspended state means database activity is temporarily paused while a segment transitions from one state to another.|
The following output fields are reported by gpstate -f for standby master replication status:
|Standby address||hostname of the standby master|
|Standby data dir||file system location of the standby master data directory|
|Standby port||port of the standby master postgres database listener process|
|Standby PID||process ID of the standby master|
|Standby status||status of the standby master: Standby host passive|
|WAL Sender State||write-ahead log (WAL) streaming state: streaming, startup,backup, catchup|
|Sync state||WAL sender syncronization state: sync|
|Sent Location||WAL sender transaction log (xlog) record sent location|
|Flush Location||WAL receiver xlog record flush location|
|Replay Location||standby xlog record replay location|
Show detailed status information of a Greenplum Database system:
Do a quick check for down segments in the master host system catalog:
Show information about the standby master configuration:
Display the Greenplum software version information: