Deepgreen/Greenplum 删除节点步骤
Deepgreen/Greenplum删除节点步骤
Greenplum和Deepgreen官方都没有给出删除节点的方法和建议，但实际上，我们可以对节点进行删除。由于不确定性，删除节点极有可能导致其他的问题，所以还行做好备份，谨慎而为。下面是具体的步骤：
1.查看数据库当前状态（12个实例）
[gpadmin@sdw1 ~]$ gpstate
20170816:12:53:25:097578 gpstate:sdw1:gpadmin-[INFO]:-Starting gpstate with args:
20170816:12:53:25:097578 gpstate:sdw1:gpadmin-[INFO]:-local Greenplum Version: 'postgres (Greenplum Database) 4.3.99.00 build Deepgreen DB'
20170816:12:53:25:097578 gpstate:sdw1:gpadmin-[INFO]:-master Greenplum Version: 'PostgreSQL 8.2.15 (Greenplum Database 4.3.99.00 build Deepgreen DB) on x86_64-unknown-linux-gnu, compiled by GCC gcc (GCC) 4.9.2 20150212 (Red Hat 4.9.2-6) compiled on Jul 6 2017 03:04:10'
20170816:12:53:25:097578 gpstate:sdw1:gpadmin-[INFO]:-Obtaining Segment details from master...
20170816:12:53:25:097578 gpstate:sdw1:gpadmin-[INFO]:-Gathering data from segments...
..
20170816:12:53:27:097578 gpstate:sdw1:gpadmin-[INFO]:-Greenplum instance status summary
20170816:12:53:27:097578 gpstate:sdw1:gpadmin-[INFO]:-----------------------------------------------------
20170816:12:53:27:097578 gpstate:sdw1:gpadmin-[INFO]:- Master instance = Active
20170816:12:53:27:097578 gpstate:sdw1:gpadmin-[INFO]:- Master standby = No master standby configured
20170816:12:53:27:097578 gpstate:sdw1:gpadmin-[INFO]:- Total segment instance count from metadata = 12
20170816:12:53:27:097578 gpstate:sdw1:gpadmin-[INFO]:-----------------------------------------------------
20170816:12:53:27:097578 gpstate:sdw1:gpadmin-[INFO]:- Primary Segment Status
20170816:12:53:27:097578 gpstate:sdw1:gpadmin-[INFO]:-----------------------------------------------------
20170816:12:53:27:097578 gpstate:sdw1:gpadmin-[INFO]:- Total primary segments = 12
20170816:12:53:27:097578 gpstate:sdw1:gpadmin-[INFO]:- Total primary segment valid (at master) = 12
20170816:12:53:27:097578 gpstate:sdw1:gpadmin-[INFO]:- Total primary segment failures (at master) = 0
20170816:12:53:27:097578 gpstate:sdw1:gpadmin-[INFO]:- Total number of postmaster.pid files missing = 0
20170816:12:53:27:097578 gpstate:sdw1:gpadmin-[INFO]:- Total number of postmaster.pid files found = 12
20170816:12:53:27:097578 gpstate:sdw1:gpadmin-[INFO]:- Total number of postmaster.pid PIDs missing = 0
20170816:12:53:27:097578 gpstate:sdw1:gpadmin-[INFO]:- Total number of postmaster.pid PIDs found = 12
20170816:12:53:27:097578 gpstate:sdw1:gpadmin-[INFO]:- Total number of /tmp lock files missing = 0
20170816:12:53:27:097578 gpstate:sdw1:gpadmin-[INFO]:- Total number of /tmp lock files found = 12
20170816:12:53:27:097578 gpstate:sdw1:gpadmin-[INFO]:- Total number postmaster processes missing = 0
20170816:12:53:27:097578 gpstate:sdw1:gpadmin-[INFO]:- Total number postmaster processes found = 12
20170816:12:53:27:097578 gpstate:sdw1:gpadmin-[INFO]:-----------------------------------------------------
20170816:12:53:27:097578 gpstate:sdw1:gpadmin-[INFO]:- Mirror Segment Status
20170816:12:53:27:097578 gpstate:sdw1:gpadmin-[INFO]:-----------------------------------------------------
20170816:12:53:27:097578 gpstate:sdw1:gpadmin-[INFO]:- Mirrors not configured on this array
20170816:12:53:27:097578 gpstate:sdw1:gpadmin-[INFO]:-----------------------------------------------------
2.并行备份数据库
使用 gpcrondump 命令备份数据库，这里不赘述，不明白的可以翻看文档。
3.关闭当前数据库
[gpadmin@sdw1 ~]$ gpstop -M fast
20170816:12:54:10:097793 gpstop:sdw1:gpadmin-[INFO]:-Starting gpstop with args: -M fast
20170816:12:54:10:097793 gpstop:sdw1:gpadmin-[INFO]:-Gathering information and validating the environment...
20170816:12:54:10:097793 gpstop:sdw1:gpadmin-[INFO]:-Obtaining Greenplum Master catalog information
20170816:12:54:10:097793 gpstop:sdw1:gpadmin-[INFO]:-Obtaining Segment details from master...
20170816:12:54:11:097793 gpstop:sdw1:gpadmin-[INFO]:-Greenplum Version: 'postgres (Greenplum Database) 4.3.99.00 build Deepgreen DB'
20170816:12:54:11:097793 gpstop:sdw1:gpadmin-[INFO]:---------------------------------------------
20170816:12:54:11:097793 gpstop:sdw1:gpadmin-[INFO]:-Master instance parameters
20170816:12:54:11:097793 gpstop:sdw1:gpadmin-[INFO]:---------------------------------------------
20170816:12:54:11:097793 gpstop:sdw1:gpadmin-[INFO]:- Master Greenplum instance process active PID = 31250
20170816:12:54:11:097793 gpstop:sdw1:gpadmin-[INFO]:- Database = template1
20170816:12:54:11:097793 gpstop:sdw1:gpadmin-[INFO]:- Master port = 5432
20170816:12:54:11:097793 gpstop:sdw1:gpadmin-[INFO]:- Master directory = /hgdata/master/hgdwseg-1
20170816:12:54:11:097793 gpstop:sdw1:gpadmin-[INFO]:- Shutdown mode = fast
20170816:12:54:11:097793 gpstop:sdw1:gpadmin-[INFO]:- Timeout = 120
20170816:12:54:11:097793 gpstop:sdw1:gpadmin-[INFO]:- Shutdown Master standby host = Off
20170816:12:54:11:097793 gpstop:sdw1:gpadmin-[INFO]:---------------------------------------------
20170816:12:54:11:097793 gpstop:sdw1:gpadmin-[INFO]:-Segment instances that will be shutdown:
20170816:12:54:11:097793 gpstop:sdw1:gpadmin-[INFO]:---------------------------------------------
20170816:12:54:11:097793 gpstop:sdw1:gpadmin-[INFO]:- Host Datadir Port Status
20170816:12:54:11:097793 gpstop:sdw1:gpadmin-[INFO]:- sdw1 /hgdata/primary/hgdwseg0 25432 u
20170816:12:54:11:097793 gpstop:sdw1:gpadmin-[INFO]:- sdw1 /hgdata/primary/hgdwseg1 25433 u
20170816:12:54:11:097793 gpstop:sdw1:gpadmin-[INFO]:- sdw1 /hgdata/primary/hgdwseg2 25434 u
20170816:12:54:11:097793 gpstop:sdw1:gpadmin-[INFO]:- sdw1 /hgdata/primary/hgdwseg3 25435 u
20170816:12:54:11:097793 gpstop:sdw1:gpadmin-[INFO]:- sdw1 /hgdata/primary/hgdwseg4 25436 u
20170816:12:54:11:097793 gpstop:sdw1:gpadmin-[INFO]:- sdw1 /hgdata/primary/hgdwseg5 25437 u
20170816:12:54:11:097793 gpstop:sdw1:gpadmin-[INFO]:- sdw1 /hgdata/primary/hgdwseg6 25438 u
20170816:12:54:11:097793 gpstop:sdw1:gpadmin-[INFO]:- sdw1 /hgdata/primary/hgdwseg7 25439 u
20170816:12:54:11:097793 gpstop:sdw1:gpadmin-[INFO]:- sdw1 /hgdata/primary/hgdwseg8 25440 u
20170816:12:54:11:097793 gpstop:sdw1:gpadmin-[INFO]:- sdw1 /hgdata/primary/hgdwseg9 25441 u
20170816:12:54:11:097793 gpstop:sdw1:gpadmin-[INFO]:- sdw1 /hgdata/primary/hgdwseg10 25442 u
20170816:12:54:11:097793 gpstop:sdw1:gpadmin-[INFO]:- sdw1 /hgdata/primary/hgdwseg11 25443 u
Continue with Greenplum instance shutdown Yy|Nn (default=N):
> y
20170816:12:54:12:097793 gpstop:sdw1:gpadmin-[INFO]:-There are 0 connections to the database
20170816:12:54:12:097793 gpstop:sdw1:gpadmin-[INFO]:-Commencing Master instance shutdown with mode='fast'
20170816:12:54:12:097793 gpstop:sdw1:gpadmin-[INFO]:-Master host=sdw1
20170816:12:54:12:097793 gpstop:sdw1:gpadmin-[INFO]:-Detected 0 connections to database
20170816:12:54:12:097793 gpstop:sdw1:gpadmin-[INFO]:-Using standard WAIT mode of 120 seconds
20170816:12:54:12:097793 gpstop:sdw1:gpadmin-[INFO]:-Commencing Master instance shutdown with mode=fast
20170816:12:54:12:097793 gpstop:sdw1:gpadmin-[INFO]:-Master segment instance directory=/hgdata/master/hgdwseg-1
20170816:12:54:13:097793 gpstop:sdw1:gpadmin-[INFO]:-Attempting forceful termination of any leftover master process
20170816:12:54:13:097793 gpstop:sdw1:gpadmin-[INFO]:-Terminating processes for segment /hgdata/master/hgdwseg-1
20170816:12:54:13:097793 gpstop:sdw1:gpadmin-[INFO]:-No standby master host configured
20170816:12:54:13:097793 gpstop:sdw1:gpadmin-[INFO]:-Commencing parallel segment instance shutdown, please wait...
20170816:12:54:13:097793 gpstop:sdw1:gpadmin-[INFO]:-0.00% of jobs completed
20170816:12:54:23:097793 gpstop:sdw1:gpadmin-[INFO]:-100.00% of jobs completed
20170816:12:54:23:097793 gpstop:sdw1:gpadmin-[INFO]:-----------------------------------------------------
20170816:12:54:23:097793 gpstop:sdw1:gpadmin-[INFO]:- Segments stopped successfully = 12
20170816:12:54:23:097793 gpstop:sdw1:gpadmin-[INFO]:- Segments with errors during stop = 0
20170816:12:54:23:097793 gpstop:sdw1:gpadmin-[INFO]:-----------------------------------------------------
20170816:12:54:23:097793 gpstop:sdw1:gpadmin-[INFO]:-Successfully shutdown 12 of 12 segment instances
20170816:12:54:23:097793 gpstop:sdw1:gpadmin-[INFO]:-Database successfully shutdown with no errors reported
20170816:12:54:23:097793 gpstop:sdw1:gpadmin-[INFO]:-Cleaning up leftover gpmmon process
20170816:12:54:23:097793 gpstop:sdw1:gpadmin-[INFO]:-No leftover gpmmon process found
20170816:12:54:23:097793 gpstop:sdw1:gpadmin-[INFO]:-Cleaning up leftover gpsmon processes
20170816:12:54:23:097793 gpstop:sdw1:gpadmin-[INFO]:-No leftover gpsmon processes on some hosts. not attempting forceful termination on these hosts
20170816:12:54:23:097793 gpstop:sdw1:gpadmin-[INFO]:-Cleaning up leftover shared memory
4.以管理模式启动数据库
[gpadmin@sdw1 ~]$ gpstart -m
20170816:12:54:40:098061 gpstart:sdw1:gpadmin-[INFO]:-Starting gpstart with args: -m
20170816:12:54:40:098061 gpstart:sdw1:gpadmin-[INFO]:-Gathering information and validating the environment...
20170816:12:54:40:098061 gpstart:sdw1:gpadmin-[INFO]:-Greenplum Binary Version: 'postgres (Greenplum Database) 4.3.99.00 build Deepgreen DB'
20170816:12:54:40:098061 gpstart:sdw1:gpadmin-[INFO]:-Greenplum Catalog Version: '201310150'
20170816:12:54:40:098061 gpstart:sdw1:gpadmin-[INFO]:-Master-only start requested in configuration without a standby master.
Continue with master-only startup Yy|Nn (default=N):
> y
20170816:12:54:41:098061 gpstart:sdw1:gpadmin-[INFO]:-Starting Master instance in admin mode
20170816:12:54:42:098061 gpstart:sdw1:gpadmin-[INFO]:-Obtaining Greenplum Master catalog information
20170816:12:54:42:098061 gpstart:sdw1:gpadmin-[INFO]:-Obtaining Segment details from master...
20170816:12:54:42:098061 gpstart:sdw1:gpadmin-[INFO]:-Setting new master era
20170816:12:54:42:098061 gpstart:sdw1:gpadmin-[INFO]:-Master Started...
5.登陆管理数据库
[gpadmin@sdw1 ~]$ PGOPTIONS="-c gp_session_role=utility" psql -d postgres
psql (8.2.15)
Type "help" for help.
6.删除segment
postgres=# select * from gp_segment_configuration;
dbid | content | role | preferred_role | mode | status | port | hostname | address | replication_port | san_mounts
------+---------+------+----------------+------+--------+-------+----------+---------+------------------+------------
1 | -1 | p | p | s | u | 5432 | sdw1 | sdw1 | |
2 | 0 | p | p | s | u | 25432 | sdw1 | sdw1 | |
3 | 1 | p | p | s | u | 25433 | sdw1 | sdw1 | |
4 | 2 | p | p | s | u | 25434 | sdw1 | sdw1 | |
5 | 3 | p | p | s | u | 25435 | sdw1 | sdw1 | |
6 | 4 | p | p | s | u | 25436 | sdw1 | sdw1 | |
7 | 5 | p | p | s | u | 25437 | sdw1 | sdw1 | |
8 | 6 | p | p | s | u | 25438 | sdw1 | sdw1 | |
9 | 7 | p | p | s | u | 25439 | sdw1 | sdw1 | |
10 | 8 | p | p | s | u | 25440 | sdw1 | sdw1 | |
11 | 9 | p | p | s | u | 25441 | sdw1 | sdw1 | |
12 | 10 | p | p | s | u | 25442 | sdw1 | sdw1 | |
13 | 11 | p | p | s | u | 25443 | sdw1 | sdw1 | |
(13 rows)
postgres=# set allow_system_table_mods='dml';
SET
postgres=# delete from gp_segment_configuration where dbid=13;
DELETE 1
postgres=# select * from gp_segment_configuration;
dbid | content | role | preferred_role | mode | status | port | hostname | address | replication_port | san_mounts
------+---------+------+----------------+------+--------+-------+----------+---------+------------------+------------
1 | -1 | p | p | s | u | 5432 | sdw1 | sdw1 | |
2 | 0 | p | p | s | u | 25432 | sdw1 | sdw1 | |
3 | 1 | p | p | s | u | 25433 | sdw1 | sdw1 | |
4 | 2 | p | p | s | u | 25434 | sdw1 | sdw1 | |
5 | 3 | p | p | s | u | 25435 | sdw1 | sdw1 | |
6 | 4 | p | p | s | u | 25436 | sdw1 | sdw1 | |
7 | 5 | p | p | s | u | 25437 | sdw1 | sdw1 | |
8 | 6 | p | p | s | u | 25438 | sdw1 | sdw1 | |
9 | 7 | p | p | s | u | 25439 | sdw1 | sdw1 | |
10 | 8 | p | p | s | u | 25440 | sdw1 | sdw1 | |
11 | 9 | p | p | s | u | 25441 | sdw1 | sdw1 | |
12 | 10 | p | p | s | u | 25442 | sdw1 | sdw1 | |
(12 rows)
7.删除filespace
postgres=# select * from pg_filespace_entry;
fsefsoid | fsedbid | fselocation
----------+---------+---------------------------
3052 | 1 | /hgdata/master/hgdwseg-1
3052 | 2 | /hgdata/primary/hgdwseg0
3052 | 3 | /hgdata/primary/hgdwseg1
3052 | 4 | /hgdata/primary/hgdwseg2
3052 | 5 | /hgdata/primary/hgdwseg3
3052 | 6 | /hgdata/primary/hgdwseg4
3052 | 7 | /hgdata/primary/hgdwseg5
3052 | 8 | /hgdata/primary/hgdwseg6
3052 | 9 | /hgdata/primary/hgdwseg7
3052 | 10 | /hgdata/primary/hgdwseg8
3052 | 11 | /hgdata/primary/hgdwseg9
3052 | 12 | /hgdata/primary/hgdwseg10
3052 | 13 | /hgdata/primary/hgdwseg11
(13 rows)
postgres=# delete from pg_filespace_entry where fsedbid=13;
DELETE 1
postgres=# select * from pg_filespace_entry;
fsefsoid | fsedbid | fselocation
----------+---------+---------------------------
3052 | 1 | /hgdata/master/hgdwseg-1
3052 | 2 | /hgdata/primary/hgdwseg0
3052 | 3 | /hgdata/primary/hgdwseg1
3052 | 4 | /hgdata/primary/hgdwseg2
3052 | 5 | /hgdata/primary/hgdwseg3
3052 | 6 | /hgdata/primary/hgdwseg4
3052 | 7 | /hgdata/primary/hgdwseg5
3052 | 8 | /hgdata/primary/hgdwseg6
3052 | 9 | /hgdata/primary/hgdwseg7
3052 | 10 | /hgdata/primary/hgdwseg8
3052 | 11 | /hgdata/primary/hgdwseg9
3052 | 12 | /hgdata/primary/hgdwseg10
(12 rows)
8.退出管理模式，正常启动数据库
[gpadmin@sdw1 ~]$ gpstop -m
20170816:12:56:52:098095 gpstop:sdw1:gpadmin-[INFO]:-Starting gpstop with args: -m
20170816:12:56:52:098095 gpstop:sdw1:gpadmin-[INFO]:-Gathering information and validating the environment...
20170816:12:56:52:098095 gpstop:sdw1:gpadmin-[INFO]:-Obtaining Greenplum Master catalog information
20170816:12:56:52:098095 gpstop:sdw1:gpadmin-[INFO]:-Obtaining Segment details from master...
20170816:12:56:52:098095 gpstop:sdw1:gpadmin-[INFO]:-Greenplum Version: 'postgres (Greenplum Database) 4.3.99.00 build Deepgreen DB'
20170816:12:56:52:098095 gpstop:sdw1:gpadmin-[INFO]:-There are 0 connections to the database
20170816:12:56:52:098095 gpstop:sdw1:gpadmin-[INFO]:-Commencing Master instance shutdown with mode='smart'
20170816:12:56:52:098095 gpstop:sdw1:gpadmin-[INFO]:-Master host=sdw1
20170816:12:56:52:098095 gpstop:sdw1:gpadmin-[INFO]:-Commencing Master instance shutdown with mode=smart
20170816:12:56:52:098095 gpstop:sdw1:gpadmin-[INFO]:-Master segment instance directory=/hgdata/master/hgdwseg-1
20170816:12:56:53:098095 gpstop:sdw1:gpadmin-[INFO]:-Attempting forceful termination of any leftover master process
20170816:12:56:53:098095 gpstop:sdw1:gpadmin-[INFO]:-Terminating processes for segment /hgdata/master/hgdwseg-1
[gpadmin@sdw1 ~]$ gpstart
20170816:12:57:02:098112 gpstart:sdw1:gpadmin-[INFO]:-Starting gpstart with args:
20170816:12:57:02:098112 gpstart:sdw1:gpadmin-[INFO]:-Gathering information and validating the environment...
20170816:12:57:02:098112 gpstart:sdw1:gpadmin-[INFO]:-Greenplum Binary Version: 'postgres (Greenplum Database) 4.3.99.00 build Deepgreen DB'
20170816:12:57:02:098112 gpstart:sdw1:gpadmin-[INFO]:-Greenplum Catalog Version: '201310150'
20170816:12:57:02:098112 gpstart:sdw1:gpadmin-[INFO]:-Starting Master instance in admin mode
20170816:12:57:03:098112 gpstart:sdw1:gpadmin-[INFO]:-Obtaining Greenplum Master catalog information
20170816:12:57:03:098112 gpstart:sdw1:gpadmin-[INFO]:-Obtaining Segment details from master...
20170816:12:57:03:098112 gpstart:sdw1:gpadmin-[INFO]:-Setting new master era
20170816:12:57:03:098112 gpstart:sdw1:gpadmin-[INFO]:-Master Started...
20170816:12:57:03:098112 gpstart:sdw1:gpadmin-[INFO]:-Shutting down master
20170816:12:57:05:098112 gpstart:sdw1:gpadmin-[INFO]:---------------------------
20170816:12:57:05:098112 gpstart:sdw1:gpadmin-[INFO]:-Master instance parameters
20170816:12:57:05:098112 gpstart:sdw1:gpadmin-[INFO]:---------------------------
20170816:12:57:05:098112 gpstart:sdw1:gpadmin-[INFO]:-Database = template1
20170816:12:57:05:098112 gpstart:sdw1:gpadmin-[INFO]:-Master Port = 5432
20170816:12:57:05:098112 gpstart:sdw1:gpadmin-[INFO]:-Master directory = /hgdata/master/hgdwseg-1
20170816:12:57:05:098112 gpstart:sdw1:gpadmin-[INFO]:-Timeout = 600 seconds
20170816:12:57:05:098112 gpstart:sdw1:gpadmin-[INFO]:-Master standby = Off
20170816:12:57:05:098112 gpstart:sdw1:gpadmin-[INFO]:---------------------------------------
20170816:12:57:05:098112 gpstart:sdw1:gpadmin-[INFO]:-Segment instances that will be started
20170816:12:57:05:098112 gpstart:sdw1:gpadmin-[INFO]:---------------------------------------
20170816:12:57:05:098112 gpstart:sdw1:gpadmin-[INFO]:- Host Datadir Port
20170816:12:57:05:098112 gpstart:sdw1:gpadmin-[INFO]:- sdw1 /hgdata/primary/hgdwseg0 25432
20170816:12:57:05:098112 gpstart:sdw1:gpadmin-[INFO]:- sdw1 /hgdata/primary/hgdwseg1 25433
20170816:12:57:05:098112 gpstart:sdw1:gpadmin-[INFO]:- sdw1 /hgdata/primary/hgdwseg2 25434
20170816:12:57:05:098112 gpstart:sdw1:gpadmin-[INFO]:- sdw1 /hgdata/primary/hgdwseg3 25435
20170816:12:57:05:098112 gpstart:sdw1:gpadmin-[INFO]:- sdw1 /hgdata/primary/hgdwseg4 25436
20170816:12:57:05:098112 gpstart:sdw1:gpadmin-[INFO]:- sdw1 /hgdata/primary/hgdwseg5 25437
20170816:12:57:05:098112 gpstart:sdw1:gpadmin-[INFO]:- sdw1 /hgdata/primary/hgdwseg6 25438
20170816:12:57:05:098112 gpstart:sdw1:gpadmin-[INFO]:- sdw1 /hgdata/primary/hgdwseg7 25439
20170816:12:57:05:098112 gpstart:sdw1:gpadmin-[INFO]:- sdw1 /hgdata/primary/hgdwseg8 25440
20170816:12:57:05:098112 gpstart:sdw1:gpadmin-[INFO]:- sdw1 /hgdata/primary/hgdwseg9 25441
20170816:12:57:05:098112 gpstart:sdw1:gpadmin-[INFO]:- sdw1 /hgdata/primary/hgdwseg10 25442
Continue with Greenplum instance startup Yy|Nn (default=N):
> y
20170816:12:57:07:098112 gpstart:sdw1:gpadmin-[INFO]:-Commencing parallel segment instance startup, please wait...
.......
20170816:12:57:14:098112 gpstart:sdw1:gpadmin-[INFO]:-Process results...
20170816:12:57:14:098112 gpstart:sdw1:gpadmin-[INFO]:-----------------------------------------------------
20170816:12:57:14:098112 gpstart:sdw1:gpadmin-[INFO]:- Successful segment starts = 11
20170816:12:57:14:098112 gpstart:sdw1:gpadmin-[INFO]:- Failed segment starts = 0
20170816:12:57:14:098112 gpstart:sdw1:gpadmin-[INFO]:- Skipped segment starts (segments are marked down in configuration) = 0
20170816:12:57:14:098112 gpstart:sdw1:gpadmin-[INFO]:-----------------------------------------------------
20170816:12:57:14:098112 gpstart:sdw1:gpadmin-[INFO]:-
20170816:12:57:14:098112 gpstart:sdw1:gpadmin-[INFO]:-Successfully started 11 of 11 segment instances
20170816:12:57:14:098112 gpstart:sdw1:gpadmin-[INFO]:-----------------------------------------------------
20170816:12:57:14:098112 gpstart:sdw1:gpadmin-[INFO]:-Starting Master instance sdw1 directory /hgdata/master/hgdwseg-1
20170816:12:57:15:098112 gpstart:sdw1:gpadmin-[INFO]:-Command pg_ctl reports Master sdw1 instance active
20170816:12:57:15:098112 gpstart:sdw1:gpadmin-[INFO]:-No standby master configured. skipping...
20170816:12:57:15:098112 gpstart:sdw1:gpadmin-[INFO]:-Database successfully started
9.将删除节点的备份文件使用psql恢复到当前数据库
psql -d postgres -f xxxx.sql #这里不赘述恢复过程
备注：
1）本文使用的是只恢复删除节点的数据。
2）本文的过程，逆向执行，可以将删除的节点重新添加回来，但是数据恢复起来比较耗时，与重新建库恢复差不多。
转载自：https://www.sypopo.com/post/M95Rm39Or7/
Deepgreen/Greenplum 删除节点步骤的更多相关文章
- 【RAC】oracle11g r2 rac环境删除节点步骤
1.移除数据库实例 如果节点运行了service首先需要删除service使用dbca图形化界面删除节点依次选择 Real Application Clusters -- > Instance ...
- Hadoop 删除节点步骤
1.在hadoop1.1.1/conf 下新建文件 nn-excluded-list 并写入要删除的节点名称或者IP 一个节点 一行 如: mos5200app cmpaknwom rac7 2.分发 ...
- 『GreenPlum系列』GreenPlum 4节点集群安装（图文教程）
目标架构如上图 一.硬件评估 cpu主频,核数推荐CPU核数与磁盘数的比例在12:12以上Instance上执行时只能利用一个CPU核资源进行计算,推荐高主频 内存容量 网络带宽重分布操作 R ...
- Deepgreen & Greenplum DBA小白普及课之三
Deepgreen & Greenplum DBA小白普及课之三(备份问题解答) 不积跬步无以至千里,要想成为一名合格的数据库管理员,首先应该具备扎实的基础知识及问题处理能力.本文参考Pivo ...
- Javascript 笔记与总结（2-10）删除节点，创建节点
[删除节点] 步骤: ① 找到对象 ② 找到他的父对象 parentObj ③ parentObj.removeChild(子对象); [例] <!DOCTYPE html> <ht ...
- adoop集群动态添加和删除节点
hadoop集群动态添加和删除节点说明 上篇博客我已经安装了Hadoop集群(hadoop集群的安装步骤和配置),现在写这个博客我将在之前的基础上进行节点的添加的删除. 首先将启动四台机器(一主三从) ...
- redis 集群新增节点，slots槽分配，删除节点， [ERR] Calling MIGRATE ERR Syntax error, try CLIENT (LIST | KILL | GET...
redis reshard 重新分槽(slots) https://github.com/antirez/redis/issues/5029 redis 官方已确认该bug redis 集群重新(re ...
- Elasticsearch集群管理之添加、删除节点
1.问题抛出 1.1 新增节点问题 我的群集具有黄色运行状况,因为它只有一个节点,因此副本保持未分配状态,我想要添加一个节点,该怎么弄? 1.2 删除节点问题 假设集群中有5个节点,我必须在运行时删除 ...
- C和指针 第十七章 二叉树删除节点
二叉树的节点删除分为三种情况: 1.删除的节点没有子节点,直接删除即可 2. 删除的节点有一个子节点,直接用子节点替换既可以 3.删除的节点有两个子节点. 对于第三种情况,一般是不删除这个节点,而是删 ...
随机推荐
- redis网文
1.为什么说Redis是单线程的以及Redis为什么这么快!https://blog.csdn.net/chenyao1994/article/details/794913372.Redis上踩过的一 ...
- linux查看进程与结束进程
查看所有进程 ps -ef ps -ef | grep 查找的进程名 结束进程 ps -ef | grep 查找的进程名 | grep -v grep | awk '{print $2}' | xar ...
- 如何将 Redis 用于微服务通信的事件存储
来源:Redislabs作者:Martin Forstner 翻译:Kevin (公众号:中间件小哥) 以我的经验,将某些应用拆分成更小的.松耦合的.可协同工作的独立逻辑业务服务会更易于构建和维护.这 ...
- Luogu4707 重返现世 min-max容斥、DP
传送门 kthMinMax的唯一模板? 首先你需要知道kth Min-Max定理的内容:\(kthmax(S) = \sum\limits_{T \subseteq S} (-1)^{|T| - k} ...
- [CodeChef-ANUDTQ] Dynamic Trees and Queries
类似维护括号序列,给每个点建两个点,然后所有操作都能轻松支持了.注意sum和lastans是long long. #include<cstdio> #include<algorith ...
- go 学习笔记（4） import
package main import ( f "fmt" ) const NAME string = "imooc" var a string = " ...
- C# vb .net实现亮度调整特效滤镜效果
在.net中,如何简单快捷地实现Photoshop滤镜组中的亮度调整呢?答案是调用SharpImage!专业图像特效滤镜和合成类库.下面开始演示关键代码,您也可以在文末下载全部源码: 设置授权 第一步 ...
- kubernetes第二章--集群搭建
- 从MVC -> MVVM ? 开发模式
MVVM 到底是什么? view :由 MVC 中的 view 和 controller 组成,负责 UI 的展示,绑定 viewModel 中的属性,触发 viewModel 中的命令: viewM ...
- 利用.bat脚本使得可运行jar开机自动运行
1.利用Elipse到处可运行的jar包 2.写.bat脚本[点此下载],相应目录自己根据需要修改即可 3.将此脚本放在"启动"文件夹中