本篇文章主要记录GreenPlum数据库的启动、关闭及状态查询。GreenPlum数据库提供gpstart和gpstop脚本来启动和关闭数据库，可以通过—help参数来查看这些脚本的帮助信息。
01 |
[gpadmin@mdw master]$ gpstart --help |
03 |
Starts a Greenplum Database system. |
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***************************************************** |
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***************************************************** |
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gpstart [-d <master_data_directory>] [-B <parallel_processes>] |
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[-R] [-m] [-y] [-a] [-t <timeout_seconds>] |
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[-l logfile_directory] [-v | -q] |
10 |
gpstart -? | -h | --help |
12 |
***************************************************** |
14 |
***************************************************** |
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The gpstart utility is used to start the Greenplum Database server |
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processes. When you start a Greenplum Database system, you are |
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actually starting several postgres database server listener processes |
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at once (the master and all of the segment instances). The gpstart utility |
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handles the startup of the individual instances. Each instance is started |
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The first time an administrator runs gpstart, the utility creates a hosts |
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cache file named .gphostcache in the user's home directory. Subsequently, |
23 |
the utility uses this list of hosts to start the system more efficiently. |
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If new hosts are added to the system, you must manually remove this file |
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from the gpadmin user's home directory. The utility will create a new hosts |
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cache file at the next startup. |
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Before you can start a Greenplum Database system, you must have initialized |
28 |
the system using gpinitsystem first. |
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***************************************************** |
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***************************************************** |
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Do not prompt the user for confirmation. |
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-B <parallel_processes> |
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The number of segments to start in parallel. If not specified, |
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the utility will start up to 64 parallel processes depending on |
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how many segment instances it needs to start. |
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-d <master_data_directory> |
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Optional. The master host data directory. If not specified, |
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the value set for $MASTER_DATA_DIRECTORY will be used. |
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-l <logfile_directory> |
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The directory to write the log file. Defaults to ~/gpAdminLogs. |
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Optional. Starts the master instance only, which may be necessary |
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for maintenance tasks. This mode only allows connections to the master |
46 |
in utility mode. For example: |
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PGOPTIONS='-c gp_session_role=utility' psql |
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Note that starting the system in master-only mode is only advisable |
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under supervision of Greenplum support. Improper use of this option |
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may lead to a split-brain condition and possible data loss. |
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Run in quiet mode. Command output is not displayed on the screen, |
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but is still written to the log file. |
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Starts Greenplum Database in restricted mode (only database superusers |
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are allowed to connect). |
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-t | --timeout <number_of_seconds> |
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Specifies a timeout in seconds to wait for a segment instance to |
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start up. If a segment instance was shutdown abnormally (due to |
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power failure or killing its postgres database listener process, |
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for example), it may take longer to start up due to the database |
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recovery and validation process. If not specified, the default timeout |
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Displays detailed status, progress and error messages output by the utility. |
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-y (do not start standby master) |
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Optional. Do not start the standby master host. The default is to start |
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the standby master host and synchronization process. |
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-? | -h | --help (help) |
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Displays the online help. |
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--version (show utility version) |
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Displays the version of this utility. |
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***************************************************** |
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***************************************************** |
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Start a Greenplum Database system: |
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Start a Greenplum Database system in restricted mode |
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(only allow superuser connections): |
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Start the Greenplum master instance only and connect in utility mode: |
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PGOPTIONS='-c gp_session_role=utility' psql |
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Display the online help for the gpstart utility: |
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***************************************************** |
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***************************************************** |
常用的启动参数有以下几个参数：
-a，该模式不需要在启动过程中输入Y进行确认，将直接启动数据库。
-m，只启动Master节点，不启动Segment节点，通常在维护的时候使用。
-y，只启动Master的primary节点，不启动standby节点。
如下为GreenPlum数据库的启动过程。
01 |
[gpadmin@mdw gpdb]$ gpstart -a |
02 |
20160114:10:56:18:013983 gpstart:mdw:gpadmin-[INFO]:-Starting gpstart with args: -a |
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20160114:10:56:18:013983 gpstart:mdw:gpadmin-[INFO]:-Gathering information and validating the environment... |
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20160114:10:56:18:013983 gpstart:mdw:gpadmin-[INFO]:-Greenplum Binary Version: 'postgres (Greenplum Database) 4.3.6.2 build 1' |
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20160114:10:56:18:013983 gpstart:mdw:gpadmin-[INFO]:-Greenplum Catalog Version: '201310150' |
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20160114:10:56:18:013983 gpstart:mdw:gpadmin-[INFO]:-Starting Master instance in admin mode |
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20160114:10:56:19:013983 gpstart:mdw:gpadmin-[INFO]:-Obtaining Greenplum Master catalog information |
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20160114:10:56:19:013983 gpstart:mdw:gpadmin-[INFO]:-Obtaining Segment details from master... |
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20160114:10:56:19:013983 gpstart:mdw:gpadmin-[INFO]:-Setting new master era |
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20160114:10:56:19:013983 gpstart:mdw:gpadmin-[INFO]:-Master Started... |
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20160114:10:56:19:013983 gpstart:mdw:gpadmin-[INFO]:-Shutting down master |
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20160114:10:56:21:013983 gpstart:mdw:gpadmin-[INFO]:-Commencing parallel segment instance startup, please wait |
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20160114:10:56:23:013983 gpstart:mdw:gpadmin-[INFO]:-Process results... |
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20160114:10:56:23:013983 gpstart:mdw:gpadmin-[INFO]:----------------------------------------------------- |
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20160114:10:56:23:013983 gpstart:mdw:gpadmin-[INFO]:- Successful segment starts = 3 |
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20160114:10:56:23:013983 gpstart:mdw:gpadmin-[INFO]:- Failed segment starts = 0 |
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20160114:10:56:23:013983 gpstart:mdw:gpadmin-[INFO]:- Skipped segment starts (segments are marked down in configuration) = 0 |
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20160114:10:56:23:013983 gpstart:mdw:gpadmin-[INFO]:----------------------------------------------------- |
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20160114:10:56:23:013983 gpstart:mdw:gpadmin-[INFO]:- |
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20160114:10:56:23:013983 gpstart:mdw:gpadmin-[INFO]:-Successfully started 3 of 3 segment instances |
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20160114:10:56:23:013983 gpstart:mdw:gpadmin-[INFO]:----------------------------------------------------- |
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20160114:10:56:23:013983 gpstart:mdw:gpadmin-[INFO]:-Starting Master instance mdw directory /gpdb/gpdata/master/gpseg-1 |
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20160114:10:56:24:013983 gpstart:mdw:gpadmin-[INFO]:-Command pg_ctl reports Master mdw instance active |
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20160114:10:56:24:013983 gpstart:mdw:gpadmin-[INFO]:-No standby master configured. skipping... |
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20160114:10:56:24:013983 gpstart:mdw:gpadmin-[INFO]:-Database successfully started |
可以通过gpstate脚本来查看数据库的状态信息，该命令的帮助信息如下：
001 |
[gpadmin@mdw master]$ gpstate --help |
002 |
\COMMAND NAME: gpstate |
003 |
Shows the status of a running Greenplum Database system. |
004 |
***************************************************** |
006 |
***************************************************** |
007 |
gpstate [-d <master_data_directory>] [-B <parallel_processes>] |
008 |
[-s | -b | -Q | -e] [-m | -c] [-p] [-i] [-f] |
009 |
[-v | -q] [-l <log_directory>] |
010 |
gpstate -? | -h | --help |
011 |
***************************************************** |
013 |
***************************************************** |
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The gpstate utility displays information about a running |
015 |
Greenplum Database instance. There is additional information |
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you may want to know about a Greenplum Database system, since |
017 |
it is comprised of multiple PostgreSQL database instances (segments) |
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spanning multiple machines. The gpstate utility provides |
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additional status information for a Greenplum Database system, |
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* Which segments are down. |
022 |
* Master and segment configuration information (hosts, |
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data directories, etc.). |
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* The ports used by the system. |
025 |
* A mapping of primary segments to their corresponding |
027 |
***************************************************** |
029 |
***************************************************** |
031 |
Optional. Display a brief summary of the state of the |
032 |
Greenplum Database system. This is the default option. |
033 |
-B <parallel_processes> |
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The number of segments to check in parallel. If not specified, |
035 |
the utility will start up to 60 parallel processes depending on |
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how many segment instances it needs to check. |
037 |
-c (show primary to mirror mappings) |
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Optional. Display mapping of primary segments to their |
039 |
corresponding mirror segments. |
040 |
-d <master_data_directory> |
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Optional. The master data directory. If not specified, the |
042 |
value set for $MASTER_DATA_DIRECTORY will be used. |
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-e (show segments with mirror status issues) |
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Show details on primary/mirror segment pairs that have |
045 |
potential issues such as 1) the active segment is running in |
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change tracking mode, meaning a segment is down 2) the active |
047 |
segment is in resynchronization mode, meaning it is catching |
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up changes to the mirror 3) a segment is not in its preferred role, |
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for example a segment that was a primary at system initialization |
050 |
time is now acting as a mirror, meaning you may have one or more |
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segment hosts with unbalanced processing load. |
052 |
-f (show standby master details) |
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Display details of the standby master host if configured. |
054 |
-i (show Greenplum Database version) |
055 |
Display the Greenplum Database software version information |
057 |
-l <logfile_directory> |
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The directory to write the log file. Defaults to ~/gpAdminLogs. |
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Optional. List the mirror segment instances in the system, |
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their current role, and synchronization status. |
063 |
List the port numbers used throughout the Greenplum Database |
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-q (no screen output) |
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Optional. Run in quiet mode. Except for warning messages, command |
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output is not displayed on the screen. However, this information |
068 |
is still written to the log file. |
070 |
Optional. Checks segment status in the system catalog on |
071 |
the master host. Does not poll the segments for status. |
073 |
Optional. Displays detailed status information for the |
074 |
Greenplum Database system. |
076 |
Optional. Displays error messages and outputs detailed status |
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and progress information. |
078 |
-? | -h | --help (help) |
079 |
Displays the online help. |
080 |
***************************************************** |
081 |
OUTPUT DEFINITIONS FOR DETAIL VIEW |
082 |
***************************************************** |
083 |
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
085 |
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
086 |
* Master host - host name of the master |
087 |
* Master postgres process ID - PID of the master postgres database |
089 |
* Master data directory - file system location of the master data directory |
090 |
* Master port - port of the master database listener process |
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* Master current role - dispatch = regular operating mode |
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utility = maintenance mode |
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* Greenplum array configuration type - Standard = one NIC per host |
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Multi-Home = multiple NICs per host |
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* Greenplum initsystem version - version of Greenplum Database when |
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system was first initialized |
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* Greenplum current version - current version of Greenplum Database |
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* Postgres version - version of PostgreSQL that Greenplum Database |
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* Greenplum mirroring status - physical mirroring, SAN or none |
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* Master standby - host name of the standby master |
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* Standby master state - status of the standby master: active or passive |
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+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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* Hostname - system-configured host name |
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* Address - network address host name (NIC name) |
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* Datadir - file system location of segment data directory |
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* Port - port number of segment postgres database listener process |
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* Current Role - current role of a segment: Mirror or Primary |
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* Preferred Role - role at system initialization time: Mirror or Primary |
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* Mirror Status - status of a primary/mirror segment pair: |
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Synchronized = data is up to date on both |
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Resynchronizing = data is currently being copied from one to the other |
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Change Tracking = segment down and active segment is logging changes |
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* Change tracking data size - when in Change Tracking mode, the size of the change |
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log file (may grow and shrink as compression is applied) |
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* Estimated total data to synchronize - when in Resynchronization mode, the estimated |
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size of data left to syncronize |
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* Data synchronized - when in Resynchronization mode, the estimated size of data |
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that has already been syncronized |
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* Estimated resync progress with mirror - when in Resynchronization mode, the |
123 |
estimated percentage of completion |
124 |
* Estimated resync end time - when in Resynchronization mode, the estimated |
126 |
* File postmaster.pid - status of postmaster.pid lock file: Found or Missing |
127 |
* PID from postmaster.pid file - PID found in the postmaster.pid file |
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* Lock files in /tmp - a segment port lock file for its postgres process is |
129 |
created in /tmp (file is removed when a segment shuts down) |
130 |
* Active PID - active process ID of a segment |
131 |
* Master reports status as - segment status as reported in the system catalog: |
133 |
Database status - status of Greenplum Database to incoming requests: |
134 |
Up, Down, or Suspended. A Suspended state means database |
135 |
activity is temporarily paused while a segment transitions from |
136 |
one state to another. |
137 |
***************************************************** |
139 |
***************************************************** |
140 |
Show detailed status information of a Greenplum Database system: |
142 |
Do a quick check for down segments in the master host system catalog: |
144 |
Show information about mirror segment instances: |
146 |
Show information about the standby master configuration: |
148 |
Display the Greenplum software version information: |
150 |
***************************************************** |
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***************************************************** |
常用的参数如下：
-s，详细信息。
-m，Mirror信息。
-f，Master的Standby信息。
-e，Segment的Mirror信息。
-i，版本信息。
如下为数据库启动状态通过gpstate –s查询的数据库状态信息。
01 |
[gpadmin@mdw gpdb]$ gpstate -s |
02 |
20160114:10:56:40:014082 gpstate:mdw:gpadmin-[INFO]:-Starting gpstate with args: -s |
03 |
20160114:10:56:40:014082 gpstate:mdw:gpadmin-[INFO]:-local Greenplum Version: 'postgres (Greenplum Database) 4.3.6.2 build 1' |
04 |
20160114:10:56:40:014082 gpstate:mdw:gpadmin-[INFO]:-master Greenplum Version: 'PostgreSQL 8.2.15 (Greenplum Database 4.3.6.2 build 1) on x86_64-unknown-linux-gnu, compiled by GCC gcc (GCC) 4.4.2 compiled on Nov 12 2015 23:50:28' |
05 |
20160114:10:56:40:014082 gpstate:mdw:gpadmin-[INFO]:-Obtaining Segment details from master... |
06 |
20160114:10:56:40:014082 gpstate:mdw:gpadmin-[INFO]:-Gathering data from segments... |
08 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:----------------------------------------------------- |
09 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:--Master Configuration & Status |
10 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:----------------------------------------------------- |
11 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- Master host = mdw |
12 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- Master postgres process ID = 14042 |
13 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- Master data directory = /gpdb/gpdata/master/gpseg-1 |
14 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- Master port = 5432 |
15 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- Master current role = dispatch |
16 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- Greenplum initsystem version = 4.3.6.2 build 1 |
17 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- Greenplum current version = PostgreSQL 8.2.15 (Greenplum Database 4.3.6.2 build 1) on x86_64-unknown-linux-gnu, compiled by GCC gcc (GCC) 4.4.2 compiled on Nov 12 2015 23:50:28 |
18 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- Postgres version = 8.2.15 |
19 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- Master standby = No master standby configured |
20 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:----------------------------------------------------- |
21 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:-Segment Instance Status Report |
22 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:----------------------------------------------------- |
23 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- Segment Info |
24 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- Hostname = sdw1 |
25 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- Address = sdw1 |
26 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- Datadir = /gpdb/gpdata/primary/gpseg0 |
27 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- Port = 40000 |
28 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- Status |
29 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- PID = 17195 |
30 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- Configuration reports status as = Up |
31 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- Database status = Up |
32 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:----------------------------------------------------- |
33 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- Segment Info |
34 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- Hostname = sdw2 |
35 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- Address = sdw2 |
36 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- Datadir = /gpdb/gpdata/primary/gpseg1 |
37 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- Port = 40000 |
38 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- Status |
39 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- PID = 17111 |
40 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- Configuration reports status as = Up |
41 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- Database status = Up |
42 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:----------------------------------------------------- |
43 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- Segment Info |
44 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- Hostname = sdw3 |
45 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- Address = sdw3 |
46 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- Datadir = /gpdb/gpdata/primary/gpseg2 |
47 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- Port = 40000 |
48 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- Status |
49 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- PID = 23033 |
50 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- Configuration reports status as = Up |
51 |
20160114:10:56:41:014082 gpstate:mdw:gpadmin-[INFO]:- Database status = Up |
gpstop脚本用来关闭、重启、加载新修改的参数以至生效等功能，下面是gpstop命令的帮助信息。
001 |
[gpadmin@mdw master]$ gpstop --help |
003 |
Stops or restarts a Greenplum Database system. |
004 |
***************************************************** |
006 |
***************************************************** |
007 |
gpstop [-d <master_data_directory>] [-B <parallel_processes>] |
008 |
[-M smart | fast | immediate] [-t <timeout_seconds>] |
009 |
[-r] [-y] [-a] [-l <logfile_directory>] [-v | -q] |
010 |
gpstop -m [-d <master_data_directory>] [-y] [-l <logfile_directory>] |
012 |
gpstop -u [-d <master_data_directory>] [-l <logfile_directory>] |
015 |
gpstop -? | -h | --help |
016 |
***************************************************** |
018 |
***************************************************** |
019 |
The gpstop utility is used to stop the database servers that |
020 |
comprise a Greenplum Database system. When you stop a Greenplum |
021 |
Database system, you are actually stopping several postgres |
022 |
database server processes at once (the master and all of the |
023 |
segment instances). The gpstop utility handles the shutdown |
024 |
of the individual instances. Each instance is shutdown in parallel. |
025 |
By default, you are not allowed to shut down Greenplum Database |
026 |
if there are any client connections to the database. Use |
027 |
the -M fast option to roll back and terminate any connections |
028 |
before shutting down. If there are any transactions in progress, |
029 |
the default behavior is to wait for them to commit before |
030 |
shutting down. Use the -M fast option to roll back open |
032 |
With the -u option, the utility uploads changes made to the |
033 |
master pg_hba.conf file or to runtime configuration parameters |
034 |
in the master postgresql.conf file without interruption of |
035 |
service. Note that any active sessions will not pickup the |
036 |
changes until they reconnect to the database. |
037 |
***************************************************** |
039 |
***************************************************** |
041 |
Do not prompt the user for confirmation. |
042 |
-B <parallel_processes> |
043 |
The number of segments to stop in parallel. If not specified, |
044 |
the utility will start up to 64 parallel processes depending |
045 |
on how many segment instances it needs to stop. |
046 |
-d <master_data_directory> |
047 |
Optional. The master host data directory. If not specified, |
048 |
the value set for $MASTER_DATA_DIRECTORY will be used. |
049 |
-l <logfile_directory> |
050 |
The directory to write the log file. Defaults to ~/gpAdminLogs. |
052 |
Optional. Shuts down a Greenplum master instance that was |
053 |
started in maintenance mode. |
054 |
-M fast (fast shutdown - rollback) |
055 |
Fast shut down. Any transactions in progress are interrupted and rolled back. |
056 |
-M immediate (immediate shutdown - abort) |
057 |
Immediate shut down. Any transactions in progress are aborted. This |
058 |
shutdown mode is not recommended, and in some circumstances can cause |
059 |
database corruption requiring manual recovery. |
060 |
This mode kills all postgres processes without allowing the database |
061 |
server to complete transaction processing or clean up any temporary or |
062 |
in-process work files. |
063 |
-M smart (smart shutdown - warn) |
064 |
Smart shut down. If there are active connections, this command |
065 |
fails with a warning. This is the default shutdown mode. |
066 |
-q (no screen output) |
067 |
Run in quiet mode. Command output is not displayed on the |
068 |
screen, but is still written to the log file. |
070 |
Restart after shutdown is complete. |
072 |
Specifies a timeout threshold (in seconds) to wait for a |
073 |
segment instance to shutdown. If a segment instance does not |
074 |
shutdown in the specified number of seconds, gpstop displays |
075 |
a message indicating that one or more segments are still in |
076 |
the process of shutting down and that you cannot restart |
077 |
Greenplum Database until the segment instance(s) are stopped. |
078 |
This option is useful in situations where gpstop is executed |
079 |
and there are very large transactions that need to rollback. |
080 |
These large transactions can take over a minute to rollback |
081 |
and surpass the default timeout period of 600 seconds. |
082 |
-u (reload pg_hba.conf and postgresql.conf files only) |
083 |
This option reloads the pg_hba.conf files of the master and |
084 |
segments and the runtime parameters of the postgresql.conf files |
085 |
but does not shutdown the Greenplum Database array. Use this |
086 |
option to make new configuration settings active after editing |
087 |
postgresql.conf or pg_hba.conf. Note that this only applies to |
088 |
configuration parameters that are designated as runtime parameters. |
090 |
Displays detailed status, progress and error messages output |
092 |
--version (show utility version) |
093 |
Displays the version of this utility. |
094 |
-y (do not stop standby master) |
095 |
Do not stop the standby master process. The default is to stop the standby master. |
096 |
-? | -h | --help (help) |
097 |
Displays the online help. |
098 |
***************************************************** |
100 |
***************************************************** |
101 |
Stop a Greenplum Database system in smart mode: |
103 |
Stop a Greenplum Database system in fast mode: |
105 |
Stop all segment instances and then restart the system: |
107 |
Stop a master instance that was started in maintenance mode: |
109 |
Reload the postgresql.conf and pg_hba.conf files after |
110 |
making runtime configuration parameter changes but do not |
111 |
shutdown the Greenplum Database array: |
113 |
***************************************************** |
115 |
***************************************************** |
常用的参数如下：
-a，不需要输入Y确认是否关闭，将直接关闭数据库。
-m，只关闭Master节点。
-r，重启数据库。
-u，加载参数文件，使修改的参数生效。
-M，设置关闭数据库的级别，有三种级别，fast、immediate和smart，gpstop –M fast，所有连接将中断并且回滚。gpstop –M immediate，强制关闭数据库，这种方式是不一致的关闭模式，不建议使用。Immediate smart，这是默认的关闭级别，所有连接的会话会收到关闭警告，不允许新链接访问数据库。下面是默认级别关闭GreenPlum数据库的相关信息。
01 |
[gpadmin@mdw gpdb]$ gpstop -a |
02 |
20160114:10:55:17:013853 gpstop:mdw:gpadmin-[INFO]:-Starting gpstop with args: -a |
03 |
20160114:10:55:17:013853 gpstop:mdw:gpadmin-[INFO]:-Gathering information and validating the environment... |
04 |
20160114:10:55:17:013853 gpstop:mdw:gpadmin-[INFO]:-Obtaining Greenplum Master catalog information |
05 |
20160114:10:55:17:013853 gpstop:mdw:gpadmin-[INFO]:-Obtaining Segment details from master... |
06 |
20160114:10:55:17:013853 gpstop:mdw:gpadmin-[INFO]:-Greenplum Version: 'postgres (Greenplum Database) 4.3.6.2 build 1' |
07 |
20160114:10:55:17:013853 gpstop:mdw:gpadmin-[INFO]:-There are 0 connections to the database |
08 |
20160114:10:55:17:013853 gpstop:mdw:gpadmin-[INFO]:-Commencing Master instance shutdown with mode='smart' |
09 |
20160114:10:55:17:013853 gpstop:mdw:gpadmin-[INFO]:-Master host=mdw |
10 |
20160114:10:55:17:013853 gpstop:mdw:gpadmin-[INFO]:-Commencing Master instance shutdown with mode=smart |
11 |
20160114:10:55:17:013853 gpstop:mdw:gpadmin-[INFO]:-Master segment instance directory=/gpdb/gpdata/master/gpseg-1 |
12 |
20160114:10:55:18:013853 gpstop:mdw:gpadmin-[INFO]:-Attempting forceful termination of any leftover master process |
13 |
20160114:10:55:18:013853 gpstop:mdw:gpadmin-[INFO]:-Terminating processes for segment /gpdb/gpdata/master/gpseg-1 |
14 |
20160114:10:55:18:013853 gpstop:mdw:gpadmin-[INFO]:-No standby master host configured |
15 |
20160114:10:55:18:013853 gpstop:mdw:gpadmin-[INFO]:-Commencing parallel segment instance shutdown, please wait... |
16 |
20160114:10:55:18:013853 gpstop:mdw:gpadmin-[INFO]:-0.00% of jobs completed |
17 |
20160114:10:55:28:013853 gpstop:mdw:gpadmin-[INFO]:-100.00% of jobs completed |
18 |
20160114:10:55:28:013853 gpstop:mdw:gpadmin-[INFO]:----------------------------------------------------- |
19 |
20160114:10:55:28:013853 gpstop:mdw:gpadmin-[INFO]:- Segments stopped successfully = 3 |
20 |
20160114:10:55:28:013853 gpstop:mdw:gpadmin-[INFO]:- Segments with errors during stop = 0 |
21 |
20160114:10:55:28:013853 gpstop:mdw:gpadmin-[INFO]:----------------------------------------------------- |
22 |
20160114:10:55:28:013853 gpstop:mdw:gpadmin-[INFO]:-Successfully shutdown 3 of 3 segment instances |
23 |
20160114:10:55:28:013853 gpstop:mdw:gpadmin-[INFO]:-Database successfully shutdown with no errors reported |
24 |
20160114:10:55:28:013853 gpstop:mdw:gpadmin-[INFO]:-Cleaning up leftover gpmmon process |
25 |
20160114:10:55:28:013853 gpstop:mdw:gpadmin-[INFO]:-No leftover gpmmon process found |
26 |
20160114:10:55:28:013853 gpstop:mdw:gpadmin-[INFO]:-Cleaning up leftover gpsmon processes |
27 |
20160114:10:55:28:013853 gpstop:mdw:gpadmin-[INFO]:-No leftover gpsmon processes on some hosts. not attempting forceful termination on these hosts |
28 |
20160114:10:55:28:013853 gpstop:mdw:gpadmin-[INFO]:-Cleaning up leftover shared memory |
本文固定链接: http://www.dbdream.com.cn/2016/01/greenplum%e6%95%b0%e6%8d%ae%e5%ba%93%e5%90%af%e5%8a%a8%e5%85%b3%e9%97%ad%e5%8f%8a%e6%95%b0%e6%8d%ae%e5%ba%93%e7%8a%b6%e6%80%81%e6%a3%80%e6%9f%a5/ | 信春哥，系统稳，闭眼上线不回滚！
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