本文最后更新于 1425 天前，其中的信息可能已经有所发展或是发生改变。
查看数据库当前状态
[gpadmin@jtnew59 ~]$ gpstate
关闭当前数据库
[gpadmin@jtnew59 greenplum]$ gpstop -M fast
以管理模式启动数据库
[gpadmin@jtnew59 greenplum]$ gpstart -m
登录管理数据库并且获得修改权限
#进入utility
PGOPTIONS="-c gp_session_role=utility" psql -d postgres
#获得修改权限
set allow_system_table_mods='dml';
查看部分表信息
postgres=# select * from gp_segment_configuration order by 1;
dbid | content | role | preferred_role | mode | status | port | hostname | address | replication_port | san_mounts
------+---------+------+----------------+------+--------+-------+-----------+-----------+------------------+------------
1 | -1 | p | p | s | u | 5432 | huaxing00 | huaxing00 | |
2 | 0 | p | p | c | u | 40000 | huaxing00 | huaxing00 | 41000 |
3 | 1 | p | p | c | u | 40001 | huaxing00 | huaxing00 | 41001 |
4 | 2 | p | p | c | u | 40002 | huaxing00 | huaxing00 | 41002 |
5 | 3 | p | p | c | u | 40003 | huaxing00 | huaxing00 | 41003 |
6 | 4 | p | p | c | u | 40004 | huaxing00 | huaxing00 | 41004 |
7 | 5 | p | p | c | u | 40005 | huaxing00 | huaxing00 | 41005 |
8 | 6 | m | p | s | d | 40000 | huaxing01 | huaxing01 | 41000 |
9 | 7 | m | p | s | d | 40001 | huaxing01 | huaxing01 | 41001 |
10 | 8 | m | p | s | d | 40002 | huaxing01 | huaxing01 | 41002 |
11 | 9 | m | p | s | d | 40003 | huaxing01 | huaxing01 | 41003 |
12 | 10 | m | p | s | d | 40004 | huaxing01 | huaxing01 | 41004 |
13 | 11 | m | p | s | d | 40005 | huaxing01 | huaxing01 | 41005 |
14 | 12 | p | p | s | u | 40000 | huaxing02 | huaxing02 | 41000 |
15 | 13 | p | p | s | u | 40001 | huaxing02 | huaxing02 | 41001 |
16 | 14 | p | p | s | u | 40002 | huaxing02 | huaxing02 | 41002 |
17 | 15 | p | p | s | u | 40003 | huaxing02 | huaxing02 | 41003 |
18 | 16 | p | p | s | u | 40004 | huaxing02 | huaxing02 | 41004 |
19 | 17 | p | p | s | u | 40005 | huaxing02 | huaxing02 | 41005 |
20 | 18 | p | p | s | u | 40000 | huaxing03 | huaxing03 | 41000 |
21 | 19 | p | p | s | u | 40001 | huaxing03 | huaxing03 | 41001 |
22 | 20 | p | p | s | u | 40002 | huaxing03 | huaxing03 | 41002 |
23 | 21 | p | p | s | u | 40003 | huaxing03 | huaxing03 | 41003 |
24 | 22 | p | p | s | u | 40004 | huaxing03 | huaxing03 | 41004 |
25 | 23 | p | p | s | u | 40005 | huaxing03 | huaxing03 | 41005 |
26 | 24 | p | p | s | u | 40000 | huaxing04 | huaxing04 | 41000 |
27 | 25 | p | p | s | u | 40001 | huaxing04 | huaxing04 | 41001 |
28 | 26 | p | p | s | u | 40002 | huaxing04 | huaxing04 | 41002 |
29 | 27 | p | p | s | u | 40003 | huaxing04 | huaxing04 | 41003 |
30 | 28 | p | p | s | u | 40004 | huaxing04 | huaxing04 | 41004 |
31 | 29 | p | p | s | u | 40005 | huaxing04 | huaxing04 | 41005 |
32 | 30 | p | p | s | u | 40000 | huaxing05 | huaxing05 | 41000 |
33 | 31 | p | p | s | u | 40001 | huaxing05 | huaxing05 | 41001 |
34 | 32 | p | p | s | u | 40002 | huaxing05 | huaxing05 | 41002 |
35 | 33 | p | p | s | u | 40003 | huaxing05 | huaxing05 | 41003 |
36 | 34 | p | p | s | u | 40004 | huaxing05 | huaxing05 | 41004 |
37 | 35 | p | p | s | u | 40005 | huaxing05 | huaxing05 | 41005 |
38 | 0 | m | m | s | d | 50000 | huaxing01 | huaxing01 | 51000 |
39 | 1 | m | m | s | d | 50001 | huaxing01 | huaxing01 | 51001 |
40 | 2 | m | m | s | d | 50002 | huaxing01 | huaxing01 | 51002 |
41 | 3 | m | m | s | d | 50003 | huaxing01 | huaxing01 | 51003 |
42 | 4 | m | m | s | d | 50004 | huaxing01 | huaxing01 | 51004 |
43 | 5 | m | m | s | d | 50005 | huaxing01 | huaxing01 | 51005 |
44 | 6 | p | m | c | u | 50000 | huaxing02 | huaxing02 | 51000 |
45 | 7 | p | m | c | u | 50001 | huaxing02 | huaxing02 | 51001 |
46 | 8 | p | m | c | u | 50002 | huaxing02 | huaxing02 | 51002 |
47 | 9 | p | m | c | u | 50003 | huaxing02 | huaxing02 | 51003 |
48 | 10 | p | m | c | u | 50004 | huaxing02 | huaxing02 | 51004 |
49 | 11 | p | m | c | u | 50005 | huaxing02 | huaxing02 | 51005 |
50 | 12 | m | m | s | u | 50000 | huaxing03 | huaxing03 | 51000 |
51 | 13 | m | m | s | u | 50001 | huaxing03 | huaxing03 | 51001 |
52 | 14 | m | m | s | u | 50002 | huaxing03 | huaxing03 | 51002 |
53 | 15 | m | m | s | u | 50003 | huaxing03 | huaxing03 | 51003 |
54 | 16 | m | m | s | u | 50004 | huaxing03 | huaxing03 | 51004 |
55 | 17 | m | m | s | u | 50005 | huaxing03 | huaxing03 | 51005 |
56 | 18 | m | m | s | u | 50000 | huaxing04 | huaxing04 | 51000 |
57 | 19 | m | m | s | u | 50001 | huaxing04 | huaxing04 | 51001 |
58 | 20 | m | m | s | u | 50002 | huaxing04 | huaxing04 | 51002 |
59 | 21 | m | m | s | u | 50003 | huaxing04 | huaxing04 | 51003 |
60 | 22 | m | m | s | u | 50004 | huaxing04 | huaxing04 | 51004 |
61 | 23 | m | m | s | u | 50005 | huaxing04 | huaxing04 | 51005 |
62 | 24 | m | m | s | u | 50000 | huaxing05 | huaxing05 | 51000 |
63 | 25 | m | m | s | u | 50001 | huaxing05 | huaxing05 | 51001 |
64 | 26 | m | m | s | u | 50002 | huaxing05 | huaxing05 | 51002 |
65 | 27 | m | m | s | u | 50003 | huaxing05 | huaxing05 | 51003 |
66 | 28 | m | m | s | u | 50004 | huaxing05 | huaxing05 | 51004 |
67 | 29 | m | m | s | u | 50005 | huaxing05 | huaxing05 | 51005 |
68 | 30 | m | m | s | u | 50000 | huaxing00 | huaxing00 | 51000 |
69 | 31 | m | m | s | u | 50001 | huaxing00 | huaxing00 | 51001 |
70 | 32 | m | m | s | u | 50002 | huaxing00 | huaxing00 | 51002 |
71 | 33 | m | m | s | u | 50003 | huaxing00 | huaxing00 | 51003 |
72 | 34 | m | m | s | u | 50004 | huaxing00 | huaxing00 | 51004 |
73 | 35 | m | m | s | u | 50005 | huaxing00 | huaxing00 | 51005 |
(73 rows)
postgres=# select * from pg_filespace_entry order by 2;
fsefsoid | fsedbid | fselocation
----------+---------+------------------------
3052 | 1 | /data03/master/gpseg-1
3052 | 2 | /data01/gp/p/gpseg0
3052 | 3 | /data02/gp/p/gpseg1
3052 | 4 | /data03/gp/p/gpseg2
3052 | 5 | /data04/gp/p/gpseg3
3052 | 6 | /data05/gp/p/gpseg4
3052 | 7 | /data06/gp/p/gpseg5
3052 | 8 | /data01/gp/p/gpseg6
3052 | 9 | /data02/gp/p/gpseg7
3052 | 10 | /data03/gp/p/gpseg8
3052 | 11 | /data04/gp/p/gpseg9
3052 | 12 | /data05/gp/p/gpseg10
3052 | 13 | /data06/gp/p/gpseg11
3052 | 14 | /data01/gp/p/gpseg12
3052 | 15 | /data02/gp/p/gpseg13
3052 | 16 | /data03/gp/p/gpseg14
3052 | 17 | /data04/gp/p/gpseg15
3052 | 18 | /data05/gp/p/gpseg16
3052 | 19 | /data06/gp/p/gpseg17
3052 | 20 | /data01/gp/p/gpseg18
3052 | 21 | /data02/gp/p/gpseg19
3052 | 22 | /data03/gp/p/gpseg20
3052 | 23 | /data04/gp/p/gpseg21
3052 | 24 | /data05/gp/p/gpseg22
3052 | 25 | /data06/gp/p/gpseg23
3052 | 26 | /data01/gp/p/gpseg24
3052 | 27 | /data02/gp/p/gpseg25
3052 | 28 | /data03/gp/p/gpseg26
3052 | 29 | /data04/gp/p/gpseg27
3052 | 30 | /data05/gp/p/gpseg28
3052 | 31 | /data06/gp/p/gpseg29
3052 | 32 | /data01/gp/p/gpseg30
3052 | 33 | /data02/gp/p/gpseg31
3052 | 34 | /data03/gp/p/gpseg32
3052 | 35 | /data04/gp/p/gpseg33
3052 | 36 | /data05/gp/p/gpseg34
3052 | 37 | /data06/gp/p/gpseg35
3052 | 38 | /data07/gp/m/gpseg0
3052 | 39 | /data08/gp/m/gpseg1
3052 | 40 | /data09/gp/m/gpseg2
3052 | 41 | /data10/gp/m/gpseg3
3052 | 42 | /data11/gp/m/gpseg4
3052 | 43 | /data12/gp/m/gpseg5
3052 | 44 | /data07/gp/m/gpseg6
3052 | 45 | /data08/gp/m/gpseg7
3052 | 46 | /data09/gp/m/gpseg8
3052 | 47 | /data10/gp/m/gpseg9
3052 | 48 | /data11/gp/m/gpseg10
3052 | 49 | /data12/gp/m/gpseg11
3052 | 50 | /data07/gp/m/gpseg12
3052 | 51 | /data08/gp/m/gpseg13
3052 | 52 | /data09/gp/m/gpseg14
3052 | 53 | /data10/gp/m/gpseg15
3052 | 54 | /data11/gp/m/gpseg16
3052 | 55 | /data12/gp/m/gpseg17
3052 | 56 | /data07/gp/m/gpseg18
3052 | 57 | /data08/gp/m/gpseg19
3052 | 58 | /data09/gp/m/gpseg20
3052 | 59 | /data10/gp/m/gpseg21
3052 | 60 | /data11/gp/m/gpseg22
3052 | 61 | /data12/gp/m/gpseg23
3052 | 62 | /data07/gp/m/gpseg24
3052 | 63 | /data08/gp/m/gpseg25
3052 | 64 | /data09/gp/m/gpseg26
3052 | 65 | /data10/gp/m/gpseg27
3052 | 66 | /data11/gp/m/gpseg28
3052 | 67 | /data12/gp/m/gpseg29
3052 | 68 | /data07/gp/m/gpseg30
3052 | 69 | /data08/gp/m/gpseg31
3052 | 70 | /data09/gp/m/gpseg32
3052 | 71 | /data10/gp/m/gpseg33
3052 | 72 | /data11/gp/m/gpseg34
3052 | 73 | /data12/gp/m/gpseg35
(73 rows)
删除节点
因需要移除 huaxing01节点
从gp_segment_configuration表,根据preferred_role = p,hostname = huaxing01 可知content是：6,7,8,9,10,11
delete from gp_segment_configuration where content in (6,7,8,9,10,11);
#删除后 mir需要闭环，因为需要更新
update gp_segment_configuration set hostname='huaxing02',address ='huaxing02' where hostname='huaxing01';
#删除后的信息，看完就会懂了
postgres=# select * from gp_segment_configuration order by 1;
dbid | content | role | preferred_role | mode | status | port | hostname | address | replication_port | san_mounts
------+---------+------+----------------+------+--------+-------+-----------+-----------+------------------+------------
1 | -1 | p | p | s | u | 5432 | huaxing00 | huaxing00 | |
2 | 0 | p | p | c | u | 40000 | huaxing00 | huaxing00 | 41000 |
3 | 1 | p | p | c | u | 40001 | huaxing00 | huaxing00 | 41001 |
4 | 2 | p | p | c | u | 40002 | huaxing00 | huaxing00 | 41002 |
5 | 3 | p | p | c | u | 40003 | huaxing00 | huaxing00 | 41003 |
6 | 4 | p | p | c | u | 40004 | huaxing00 | huaxing00 | 41004 |
7 | 5 | p | p | c | u | 40005 | huaxing00 | huaxing00 | 41005 |
14 | 12 | p | p | s | u | 40000 | huaxing02 | huaxing02 | 41000 |
15 | 13 | p | p | s | u | 40001 | huaxing02 | huaxing02 | 41001 |
16 | 14 | p | p | s | u | 40002 | huaxing02 | huaxing02 | 41002 |
17 | 15 | p | p | s | u | 40003 | huaxing02 | huaxing02 | 41003 |
18 | 16 | p | p | s | u | 40004 | huaxing02 | huaxing02 | 41004 |
19 | 17 | p | p | s | u | 40005 | huaxing02 | huaxing02 | 41005 |
20 | 18 | p | p | s | u | 40000 | huaxing03 | huaxing03 | 41000 |
21 | 19 | p | p | s | u | 40001 | huaxing03 | huaxing03 | 41001 |
22 | 20 | p | p | s | u | 40002 | huaxing03 | huaxing03 | 41002 |
23 | 21 | p | p | s | u | 40003 | huaxing03 | huaxing03 | 41003 |
24 | 22 | p | p | s | u | 40004 | huaxing03 | huaxing03 | 41004 |
25 | 23 | p | p | s | u | 40005 | huaxing03 | huaxing03 | 41005 |
26 | 24 | p | p | s | u | 40000 | huaxing04 | huaxing04 | 41000 |
27 | 25 | p | p | s | u | 40001 | huaxing04 | huaxing04 | 41001 |
28 | 26 | p | p | s | u | 40002 | huaxing04 | huaxing04 | 41002 |
29 | 27 | p | p | s | u | 40003 | huaxing04 | huaxing04 | 41003 |
30 | 28 | p | p | s | u | 40004 | huaxing04 | huaxing04 | 41004 |
31 | 29 | p | p | s | u | 40005 | huaxing04 | huaxing04 | 41005 |
32 | 30 | p | p | s | u | 40000 | huaxing05 | huaxing05 | 41000 |
33 | 31 | p | p | s | u | 40001 | huaxing05 | huaxing05 | 41001 |
34 | 32 | p | p | s | u | 40002 | huaxing05 | huaxing05 | 41002 |
35 | 33 | p | p | s | u | 40003 | huaxing05 | huaxing05 | 41003 |
36 | 34 | p | p | s | u | 40004 | huaxing05 | huaxing05 | 41004 |
37 | 35 | p | p | s | u | 40005 | huaxing05 | huaxing05 | 41005 |
38 | 0 | m | m | s | d | 50000 | huaxing01 | huaxing01 | 51000 |
39 | 1 | m | m | s | d | 50001 | huaxing01 | huaxing01 | 51001 |
40 | 2 | m | m | s | d | 50002 | huaxing01 | huaxing01 | 51002 |
41 | 3 | m | m | s | d | 50003 | huaxing01 | huaxing01 | 51003 |
42 | 4 | m | m | s | d | 50004 | huaxing01 | huaxing01 | 51004 |
43 | 5 | m | m | s | d | 50005 | huaxing01 | huaxing01 | 51005 |
50 | 12 | m | m | s | u | 50000 | huaxing03 | huaxing03 | 51000 |
51 | 13 | m | m | s | u | 50001 | huaxing03 | huaxing03 | 51001 |
52 | 14 | m | m | s | u | 50002 | huaxing03 | huaxing03 | 51002 |
53 | 15 | m | m | s | u | 50003 | huaxing03 | huaxing03 | 51003 |
54 | 16 | m | m | s | u | 50004 | huaxing03 | huaxing03 | 51004 |
55 | 17 | m | m | s | u | 50005 | huaxing03 | huaxing03 | 51005 |
56 | 18 | m | m | s | u | 50000 | huaxing04 | huaxing04 | 51000 |
57 | 19 | m | m | s | u | 50001 | huaxing04 | huaxing04 | 51001 |
58 | 20 | m | m | s | u | 50002 | huaxing04 | huaxing04 | 51002 |
59 | 21 | m | m | s | u | 50003 | huaxing04 | huaxing04 | 51003 |
60 | 22 | m | m | s | u | 50004 | huaxing04 | huaxing04 | 51004 |
61 | 23 | m | m | s | u | 50005 | huaxing04 | huaxing04 | 51005 |
62 | 24 | m | m | s | u | 50000 | huaxing05 | huaxing05 | 51000 |
63 | 25 | m | m | s | u | 50001 | huaxing05 | huaxing05 | 51001 |
64 | 26 | m | m | s | u | 50002 | huaxing05 | huaxing05 | 51002 |
65 | 27 | m | m | s | u | 50003 | huaxing05 | huaxing05 | 51003 |
66 | 28 | m | m | s | u | 50004 | huaxing05 | huaxing05 | 51004 |
67 | 29 | m | m | s | u | 50005 | huaxing05 | huaxing05 | 51005 |
68 | 30 | m | m | s | u | 50000 | huaxing00 | huaxing00 | 51000 |
69 | 31 | m | m | s | u | 50001 | huaxing00 | huaxing00 | 51001 |
70 | 32 | m | m | s | u | 50002 | huaxing00 | huaxing00 | 51002 |
71 | 33 | m | m | s | u | 50003 | huaxing00 | huaxing00 | 51003 |
72 | 34 | m | m | s | u | 50004 | huaxing00 | huaxing00 | 51004 |
73 | 35 | m | m | s | u | 50005 | huaxing00 | huaxing00 | 51005 |
注意：如遇到content中断不连续，需要重新连接，不然启动的时候会报错误：
postgres=# update gp_segment_configuration set content=content-6 where content>5;
ERROR: duplicate key value violates unique constraint "gp_segment_config_content_preferred_role_index"
DETAIL: Key (content, preferred_role)=(25, p) already exists.
手动一个一个更新：
update gp_segment_configuration set content=content-6 where content=12;
...
update gp_segment_configuration set content=content-6 where content=35;
根据gp_segment_configuration表的dbid可知 pg_filespace_entry表fsedbid为：8,9,10,11,12,13,44,45,46,47,48,49
delete from pg_filespace_entry where fsedbid in (8,9,10,11,12,13,44,45,46,47,48,49);
原来73个节点 包含master 刨除master就是72个 删掉了两台服务器12个 那就是60个了
postgres=# select * from gp_id;
gpname | numsegments | dbid | content
-----------+-------------+------+---------
Greenplum | -1 | -1 | -1
#更新
update gp_id set numsegments=60;
update gp_id set dbid=1;
postgres=# select * from gp_id;
gpname | numsegments | dbid | content
-----------+-------------+------+---------
Greenplum | 60 | 1 | -1
(1 row)
退出管理模式，正常启动数据库
文件夹也需要闭环处理—>到huaxing02的mirror下 分别 ：
mv gpseg6 gpseg0
mv gpseg7 gpseg1
mv gpseg8 gpseg2
mv gpseg9 gpseg3
mv gpseg10 gpseg4
mv gpseg11 gpseg5
退出维护模式，请启动数据库：
gpstop -m
gpstart -a
重启数据库会节点异常报错，需要进行异常同步：
[gpadmin@huaxing00 ~]$ gpstart -a
20210225:22:37:13:036328 gpstart:huaxing00:gpadmin-[INFO]:-Starting gpstart with args: -a
20210225:22:37:13:036328 gpstart:huaxing00:gpadmin-[INFO]:-Gathering information and validating the environment...
20210225:22:37:14:036328 gpstart:huaxing00:gpadmin-[INFO]:-Greenplum Binary Version: 'postgres (Greenplum Database) 4.3.11.3 build 1'
20210225:22:37:14:036328 gpstart:huaxing00:gpadmin-[INFO]:-Greenplum Catalog Version: '201310150'
20210225:22:37:14:036328 gpstart:huaxing00:gpadmin-[INFO]:-Starting Master instance in admin mode
20210225:22:37:15:036328 gpstart:huaxing00:gpadmin-[INFO]:-Obtaining Greenplum Master catalog information
20210225:22:37:15:036328 gpstart:huaxing00:gpadmin-[INFO]:-Obtaining Segment details from master...
20210225:22:37:15:036328 gpstart:huaxing00:gpadmin-[INFO]:-Setting new master era
20210225:22:37:15:036328 gpstart:huaxing00:gpadmin-[INFO]:-Master Started...
20210225:22:37:15:036328 gpstart:huaxing00:gpadmin-[INFO]:-Shutting down master
20210225:22:37:16:036328 gpstart:huaxing00:gpadmin-[WARNING]:-Skipping startup of segment marked down in configuration: on huaxing02 directory /data07/gp/m/gpseg0 <<<<<
20210225:22:37:16:036328 gpstart:huaxing00:gpadmin-[WARNING]:-Skipping startup of segment marked down in configuration: on huaxing02 directory /data08/gp/m/gpseg1 <<<<<
20210225:22:37:16:036328 gpstart:huaxing00:gpadmin-[WARNING]:-Skipping startup of segment marked down in configuration: on huaxing02 directory /data09/gp/m/gpseg2 <<<<<
20210225:22:37:16:036328 gpstart:huaxing00:gpadmin-[WARNING]:-Skipping startup of segment marked down in configuration: on huaxing02 directory /data10/gp/m/gpseg3 <<<<<
20210225:22:37:16:036328 gpstart:huaxing00:gpadmin-[WARNING]:-Skipping startup of segment marked down in configuration: on huaxing02 directory /data11/gp/m/gpseg4 <<<<<
20210225:22:37:16:036328 gpstart:huaxing00:gpadmin-[WARNING]:-Skipping startup of segment marked down in configuration: on huaxing02 directory /data12/gp/m/gpseg5 <<<<<
20210225:22:37:16:036328 gpstart:huaxing00:gpadmin-[INFO]:-Commencing parallel primary and mirror segment instance startup, please wait...
......................................................
20210225:22:38:10:036328 gpstart:huaxing00:gpadmin-[INFO]:-Process results...
20210225:22:38:10:036328 gpstart:huaxing00:gpadmin-[INFO]:-----------------------------------------------------
20210225:22:38:10:036328 gpstart:huaxing00:gpadmin-[INFO]:- Successful segment starts = 54
20210225:22:38:10:036328 gpstart:huaxing00:gpadmin-[INFO]:- Failed segment starts = 0
20210225:22:38:10:036328 gpstart:huaxing00:gpadmin-[WARNING]:-Skipped segment starts (segments are marked down in configuration) = 6 <<<<<<<<
20210225:22:38:10:036328 gpstart:huaxing00:gpadmin-[INFO]:-----------------------------------------------------
20210225:22:38:10:036328 gpstart:huaxing00:gpadmin-[INFO]:-
20210225:22:38:10:036328 gpstart:huaxing00:gpadmin-[INFO]:-Successfully started 54 of 54 segment instances, skipped 6 other segments
20210225:22:38:10:036328 gpstart:huaxing00:gpadmin-[INFO]:-----------------------------------------------------
20210225:22:38:10:036328 gpstart:huaxing00:gpadmin-[WARNING]:-****************************************************************************
20210225:22:38:10:036328 gpstart:huaxing00:gpadmin-[WARNING]:-There are 6 segment(s) marked down in the database
20210225:22:38:10:036328 gpstart:huaxing00:gpadmin-[WARNING]:-To recover from this current state, review usage of the gprecoverseg
20210225:22:38:10:036328 gpstart:huaxing00:gpadmin-[WARNING]:-management utility which will recover failed segment instance databases.
20210225:22:38:10:036328 gpstart:huaxing00:gpadmin-[WARNING]:-****************************************************************************
20210225:22:38:10:036328 gpstart:huaxing00:gpadmin-[INFO]:-Starting Master instance huaxing00 directory /data03/master/gpseg-1
20210225:22:38:11:036328 gpstart:huaxing00:gpadmin-[INFO]:-Command pg_ctl reports Master huaxing00 instance active
20210225:22:38:14:036328 gpstart:huaxing00:gpadmin-[INFO]:-No standby master configured. skipping...
20210225:22:38:14:036328 gpstart:huaxing00:gpadmin-[WARNING]:-Number of segments not attempted to start: 6
20210225:22:38:14:036328 gpstart:huaxing00:gpadmin-[INFO]:-Check status of database with gpstate utility
[gpadmin@huaxing00 ~]$ gpstate -m
20210225:22:38:19:037332 gpstate:huaxing00:gpadmin-[INFO]:-Starting gpstate with args: -m
20210225:22:38:19:037332 gpstate:huaxing00:gpadmin-[INFO]:-local Greenplum Version: 'postgres (Greenplum Database) 4.3.11.3 build 1'
20210225:22:38:19:037332 gpstate:huaxing00:gpadmin-[INFO]:-master Greenplum Version: 'PostgreSQL 8.2.15 (Greenplum Database 4.3.11.3 build 1) on x86_64-unknown-linux-gnu, compiled by GCC gcc (GCC) 4.4.2 compiled on Jan 24 2017 20:28:18'
20210225:22:38:19:037332 gpstate:huaxing00:gpadmin-[INFO]:-Obtaining Segment details from master...
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[INFO]:--------------------------------------------------------------
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[INFO]:--Current GPDB mirror list and status
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[INFO]:--Type = Group
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[INFO]:--------------------------------------------------------------
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[INFO]:- Mirror Datadir Port Status Data Status
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[WARNING]:-huaxing02 /data07/gp/m/gpseg0 50000 Failed <<<<<<<<
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[WARNING]:-huaxing02 /data08/gp/m/gpseg1 50001 Failed <<<<<<<<
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[WARNING]:-huaxing02 /data09/gp/m/gpseg2 50002 Failed <<<<<<<<
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[WARNING]:-huaxing02 /data10/gp/m/gpseg3 50003 Failed <<<<<<<<
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[WARNING]:-huaxing02 /data11/gp/m/gpseg4 50004 Failed <<<<<<<<
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[WARNING]:-huaxing02 /data12/gp/m/gpseg5 50005 Failed <<<<<<<<
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[INFO]:- huaxing03 /data07/gp/m/gpseg12 50000 Passive Synchronized
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[INFO]:- huaxing03 /data08/gp/m/gpseg13 50001 Passive Synchronized
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[INFO]:- huaxing03 /data09/gp/m/gpseg14 50002 Passive Synchronized
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[INFO]:- huaxing03 /data10/gp/m/gpseg15 50003 Passive Synchronized
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[INFO]:- huaxing03 /data11/gp/m/gpseg16 50004 Passive Synchronized
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[INFO]:- huaxing03 /data12/gp/m/gpseg17 50005 Passive Synchronized
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[INFO]:- huaxing04 /data07/gp/m/gpseg18 50000 Passive Synchronized
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[INFO]:- huaxing04 /data08/gp/m/gpseg19 50001 Passive Synchronized
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[INFO]:- huaxing04 /data09/gp/m/gpseg20 50002 Passive Synchronized
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[INFO]:- huaxing04 /data10/gp/m/gpseg21 50003 Passive Synchronized
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[INFO]:- huaxing04 /data11/gp/m/gpseg22 50004 Passive Synchronized
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[INFO]:- huaxing04 /data12/gp/m/gpseg23 50005 Passive Synchronized
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[INFO]:- huaxing05 /data07/gp/m/gpseg24 50000 Passive Synchronized
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[INFO]:- huaxing05 /data08/gp/m/gpseg25 50001 Passive Synchronized
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[INFO]:- huaxing05 /data09/gp/m/gpseg26 50002 Passive Synchronized
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[INFO]:- huaxing05 /data10/gp/m/gpseg27 50003 Passive Synchronized
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[INFO]:- huaxing05 /data11/gp/m/gpseg28 50004 Passive Synchronized
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[INFO]:- huaxing05 /data12/gp/m/gpseg29 50005 Passive Synchronized
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[INFO]:- huaxing00 /data07/gp/m/gpseg30 50000 Passive Synchronized
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[INFO]:- huaxing00 /data08/gp/m/gpseg31 50001 Passive Synchronized
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[INFO]:- huaxing00 /data09/gp/m/gpseg32 50002 Passive Synchronized
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[INFO]:- huaxing00 /data10/gp/m/gpseg33 50003 Passive Synchronized
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[INFO]:- huaxing00 /data11/gp/m/gpseg34 50004 Passive Synchronized
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[INFO]:- huaxing00 /data12/gp/m/gpseg35 50005 Passive Synchronized
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[INFO]:--------------------------------------------------------------
20210225:22:38:20:037332 gpstate:huaxing00:gpadmin-[WARNING]:-6 segment(s) configured as mirror(s) have failed
#产生一个恢复的配置文件
[gpadmin@huaxing00 ~]$ gprecoverseg -o ./recov
#查看恢复的配置文件-可以知道哪些segment需要恢复
[gpadmin@huaxing00 ~]$ cat recov
filespaceOrder=
huaxing02:50000:/data07/gp/m/gpseg0
huaxing02:50001:/data08/gp/m/gpseg1
huaxing02:50002:/data09/gp/m/gpseg2
huaxing02:50003:/data10/gp/m/gpseg3
huaxing02:50004:/data11/gp/m/gpseg4
huaxing02:50005:/data12/gp/m/gpseg5
#使用配置文件进行恢复
[gpadmin@huaxing00 ~]$ gprecoverseg -i ./recov
#查看恢复状态
[gpadmin@huaxing00 ~]$ gpstate -m
primary mirror角色对调：
数据库的主备就恢复了，但是还有一步，是可选的。要不要把primary mirror角色对调一下，因为现在mirror和primary和优先角色是相反的。 如果要对调，使用以下命令，会停库来处理：
gprecoverseg -r
参考：
https://blog.51cto.com/dengshuangfu/2395692?source=dra
https://blog.csdn.net/Explorren/article/details/103636269