greenplum集群安装与增加节点生产环境实战
greenplum集群安装与增加节点生产环境实战
1.准备环境
1.1集群介绍
系统环境：centos6.5
数据库版本：greenplum-db-4.3.3.1-build-1-RHEL5-x86_64.zip
greenplum集群中,2台机器IP分别是
[root@BI-greenplum-01 ~]# cat /etc/hosts
127.0.0.1 localhost localhost.localdomain
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.10.201 BI-greenplum-01
192.168.10.202 BI-greenplum-02
1.2创建用户及用户组（每台机器）
[root@BI-greenplum-01 ~]# groupadd -g 530 gpadmin
[root@BI-greenplum-01 ~]# useradd -g 530 -u530 -m -d /home/gpadmin -s /bin/bash gpadmin
[root@BI-greenplum-01 ~]# passwd gpadmin
Changing password for user gpadmin.
New password:
BAD PASSWORD: it is too simplistic/systematic
BAD PASSWORD: is too simple
Retype new password:
passwd: all authentication tokens updated successfully.
1.3配置内核参数，添加如下内容：
vi /etc/sysctl.conf
#By greenplum
net.ipv4.ip_forward = 0
net.ipv4.conf.default.accept_source_route = 0
kernel.sysrq = 1
kernel.core_uses_pid = 1
net.ipv4.tcp_syncookies = 1
kernel.msgmnb = 65536
kernel.msgmax = 65536
kernel.sem = 250 64000 100 512
kernel.shmmax = 500000000
kernel.shmmni = 4096
kernel.shmall = 4000000000
kernel.sem = 250 64000 100 512
net.ipv4.tcp_tw_recycle=1
net.ipv4.tcp_max_syn_backlog=4096
net.core.netdev_max_backlog=10000
vm.overcommit_memory=2
net.ipv4.conf.all.arp_filter = 1
以上参数可以根据自己系统配置做适当修改
手工执行命令，让参数生效
[root@BI-greenplum-01 ~]# sysctl -p
在limits.conf文件中添加如下配置
[root@BI-greenplum-01 ~]# vi /etc/security/limits.conf
# End of file
* soft nofile 65536
* hard nofile 65536
* soft nproc 131072
* hard nproc 131072
2.greenplum安装
2.1安装依赖包,包括增加节点需要的包
yum -y install ed openssh-clients gcc gcc-c++ make automake autoconf libtool perl rsync coreutils glib2 lrzsz sysstat e4fsprogs xfsprogs ntp readline-devel zlib zlib-devel unzip
注意:greenplum依赖ed,否则无法初始化成功
2.2首先准备好安装文件（在MASTER 192.168.10.201上操作）
[root@BI-greenplum-01 ~]# unzip greenplum-db-4.3.3.1-build-1-RHEL5-x86_64.zip
[root@BI-greenplum-01 ~]# ./greenplum-db-4.3.3.1-build-1-RHEL5-x86_64.bin
2.3给安装过目录赋权
[root@BI-greenplum-01 ~]# cd /usr/local/
[root@BI-greenplum-01 local]# chown -R gpadmin:gpadmin /usr/local/greenplum-db*
2.4压缩打包传到其他机器上
[root@BI-greenplum-01 local]# tar zcvf gp.tar.gz greenplum-db*
[root@BI-greenplum-01 local]# scp gp.tar.gz BI-greenplum-02:/usr/local/
2.5其他机器上解压文件
[root@BI-greenplum-02 ~]# cd /usr/local/
[root@BI-greenplum-02 local]# ls
bin etc games gp.tar.gz include lib lib64 libexec sbin share src
[root@BI-greenplum-02 local]# tar zxvf gp.tar.gz
2.6每台机器上配置环境变量
[root@BI-greenplum-01 local]# su - gpadmin
[gpadmin@BI-greenplum-01 ~]$ vi .bash_profile
source /usr/local/greenplum-db/greenplum_path.sh
export MASTER_DATA_DIRECTORY=/app/master/gpseg-1
export PGPORT=5432
export PGDATABASE=trjdb
让环境变量生效
[gpadmin@BI-greenplum-01 ~]$ source .bash_profile
2.7 配置免钥
[gpadmin@BI-greenplum-01 ~]$ cat all_hosts_file
BI-greenplum-01
BI-greenplum-02
[gpadmin@BI-greenplum-01 ~]$ gpssh-exkeys -f all_hosts_file
[STEP 1 of 5] create local ID and authorize on local host
[STEP 2 of 5] keyscan all hosts and update known_hosts file
[STEP 3 of 5] authorize current user on remote hosts
... send to BI-greenplum-02
***
*** Enter password for BI-greenplum-02:
[STEP 4 of 5] determine common authentication file content
[STEP 5 of 5] copy authentication files to all remote hosts
... finished key exchange with BI-greenplum-02
[INFO] completed successfully
2.8创建数据文件（每台操作）
[root@BI-greenplum-01 ~]# mkdir /app
[root@BI-greenplum-01 ~]# chown -R gpadmin:gpadmin /app
在MASTER（192.168.10.201）操作
[gpadmin@BI-greenplum-01 ~]$ gpssh -f all_hosts_file
Note: command history unsupported on this machine ...
=> mkdir /app/master
[BI-greenplum-02]
[BI-greenplum-01]
=> mkdir -p /app/data/gp1 /app/data/gp2 /app/data/gp3 /app/data/gp4
[BI-greenplum-02]
[BI-greenplum-01]
=> mkdir -p /app/data/gpm1 /app/data/gpm2 /app/data/gpm3 /app/data/gpm4
[BI-greenplum-02]
[BI-greenplum-01]
[gpadmin@BI-greenplum-01 ~]$ vi gpinitsystem_config
# FILE NAME: gpinitsystem_config
# Configuration file needed by the gpinitsystem
################################################
#### REQUIRED PARAMETERS
################################################
#### Name of this Greenplum system enclosed in quotes.
ARRAY_NAME="EMC Greenplum DW"
#### Naming convention for utility-generated data directories.
SEG_PREFIX=gpseg
#### Base number by which primary segment port numbers
#### are calculated.
PORT_BASE=40000
#### File system location(s) where primary segment data directories
#### will be created. The number of locations in the list dictate
#### the number of primary segments that will get created per
#### physical host (if multiple addresses for a host are listed in
#### the hostfile, the number of segments will be spread evenly across
#### the specified interface addresses).
declare -a DATA_DIRECTORY=(/app/data/gp1 /app/data/gp2 /app/data/gp3 /app/data/gp4)
#### OS-configured hostname or IP address of the master host.
MASTER_HOSTNAME=BI-greenplum-01
#### File system location where the master data directory
#### will be created.
MASTER_DIRECTORY=/app/master
#### Port number for the master instance.
MASTER_PORT=5432
#### Shell utility used to connect to remote hosts.
TRUSTED_SHELL=ssh
#### Maximum log file segments between automatic WAL checkpoints.
CHECK_POINT_SEGMENTS=8
#### Default server-side character set encoding.
ENCODING=UNICODE
################################################
#### OPTIONAL MIRROR PARAMETERS
################################################
#### Base number by which mirror segment port numbers
#### are calculated.
MIRROR_PORT_BASE=50000
#### Base number by which primary file replication port
#### numbers are calculated.
REPLICATION_PORT_BASE=41000
#### Base number by which mirror file replication port
#### numbers are calculated.
MIRROR_REPLICATION_PORT_BASE=51000
#### File system location(s) where mirror segment data directories
#### will be created. The number of mirror locations must equal the
#### number of primary locations as specified in the
#### DATA_DIRECTORY parameter.
declare -a MIRROR_DATA_DIRECTORY=(/app/data/gpm1 /app/data/gpm2 /app/data/gpm3 /app/data/gpm4)
################################################
#### OTHER OPTIONAL PARAMETERS
################################################
#### Create a database of this name after initialization.
DATABASE_NAME=trjdb
#### Specify the location of the host address file here instead of
#### with the the -h option of gpinitsystem.
MACHINE_LIST_FILE=/home/gpadmin/seg_hosts_file
增加配置为数据节点
[gpadmin@BI-greenplum-01 ~]$ vi seg_hosts_file
BI-greenplum-01
BI-greenplum-02
3.初始配置
[gpadmin@BI-greenplum-01 ~]$ gpinitsystem -c gpinitsystem_config -s BI-greenplum-02
以上说明已经安装完成
[gpadmin@BI-greenplum-01 ~]$ psql -d trjdb
psql (8.2.15)
Type "help" for help.
trjdb=#
查看集群状态
select a.dbid,a.content,a.role,a.port,a.hostname,b.fsname,c.fselocation from gp_segment_configuration a,pg_filespace b,pg_filespace_entry c where a.dbid=c.fsedbid and b.oid=c.fsefsoid order by content;
greenplum增加机器与增加数据节点
1、增加两台（192.168.10.203、192.168.10.204）
修改hosts(每台都一样)
[root@BI-greenplum-01 ~]# cat /etc/hosts
127.0.0.1 localhost localhost.localdomain
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.10.201 BI-greenplum-01
192.168.10.202 BI-greenplum-02
192.168.10.203 BI-greenplum-03
192.168.10.204 BI-greenplum-04
2、创建用户及用户组（增加的机器）
[root@BI-greenplum-03 ~]# groupadd -g 530 gpadmin
[root@BI-greenplum-03 ~]# useradd -g 530 -u530 -m -d /home/gpadmin -s /bin/bash gpadmin
[root@BI-greenplum-03 ~]# passwd gpadmin
Changing password for user gpadmin.
New password:
BAD PASSWORD: it is too simplistic/systematic
BAD PASSWORD: is too simple
Retype new password:
passwd: all authentication tokens updated successfully.
3.修改内核配置文件（增加的机器）
[root@BI-greenplum-03 ~]# vi /etc/sysctl.conf
#By greenplum
net.ipv4.ip_forward = 0
net.ipv4.conf.default.accept_source_route = 0
kernel.sysrq = 1
kernel.core_uses_pid = 1
net.ipv4.tcp_syncookies = 1
kernel.msgmnb = 65536
kernel.msgmax = 65536
kernel.sem = 250 64000 100 512
kernel.shmmax = 500000000
kernel.shmmni = 4096
kernel.shmall = 4000000000
kernel.sem = 250 64000 100 512
net.ipv4.tcp_tw_recycle=1
net.ipv4.tcp_max_syn_backlog=4096
net.core.netdev_max_backlog=10000
vm.overcommit_memory=2
net.ipv4.conf.all.arp_filter = 1
让内核参数生效
[root@BI-greenplum-03 ~]# sysctl -p
4、修改文件打开数
[root@BI-greenplum-03 ~]# vi /etc/security/limits.conf
* soft nofile 65536
* hard nofile 65536
* soft nproc 131072
* hard nproc 131072
5、安装依赖包
yum -y install ed openssh-clients gcc gcc-c++ make automake autoconf libtool perl rsync coreutils glib2 lrzsz sysstat e4fsprogs xfsprogs ntp readline-devel zlib zlib-devel unzip
6、把之前的压缩包gp.tar.gz拷贝到增加节点上
[root@BI-greenplum-01 local]# scp gp.tar.gz BI-greenplum-03:/usr/local/
[root@BI-greenplum-01 local]# scp gp.tar.gz BI-greenplum-04:/usr/local/
解压
[root@BI-greenplum-03 local]# tar zxvf gp.tar.gz
[root@BI-greenplum-04 local]# tar zxvf gp.tar.gz
7、增加节点创建目录（每台增加节点上）
[root@BI-greenplum-03 local]# mkdir /app/master
[root@BI-greenplum-04 local]# mkdir /app/master
[root@BI-greenplum-03 local]# mkdir -p /app/data/gp1 /app/data/gp2 /app/data/gp3 /app/data/gp4
[root@BI-greenplum-04 local]# mkdir -p /app/data/gp1 /app/data/gp2 /app/data/gp3 /app/data/gp4
[root@BI-greenplum-03 local]# mkdir -p /app/data/gpm1 /app/data/gpm2 /app/data/gpm3 /app/data/gpm4
[root@BI-greenplum-04 local]# mkdir -p /app/data/gpm1 /app/data/gpm2 /app/data/gpm3 /app/data/gpm4
[root@BI-greenplum-03 local]# chown -R gpadmin:gpadmin /app
[root@BI-greenplum-04 local]# chown -R gpadmin:gpadmin /app
[root@BI-greenplum-03 local]# chmod -R 700 /app
[root@BI-greenplum-04 local]# chmod -R 700 /app
8、修改环境变量（增加计算点机器）
[root@BI-greenplum-03 local]# su - gpadmin
[gpadmin@BI-greenplum-03 ~]$ vi .bash_profile
source /usr/local/greenplum-db/greenplum_path.sh
export MASTER_DATA_DIRECTORY=/app/master/gpseg-1
export PGPORT=5432
export PGDATABASE=trjdb
让环境变量生效
[gpadmin@BI-greenplum-03 ~]$ source .bash_profile
9、免密钥在BI-greenplum-01操作
[root@BI-greenplum-01 local]# su - gpadmin
[gpadmin@BI-greenplum-01 ~]$ vi all_hosts_file
BI-greenplum-01
BI-greenplum-02
BI-greenplum-03
BI-greenplum-04
[gpadmin@BI-greenplum-01 ~]$ gpssh-exkeys -f all_hosts_file
[STEP 1 of 5] create local ID and authorize on local host
... /home/gpadmin/.ssh/id_rsa file exists ... key generation skipped
[STEP 2 of 5] keyscan all hosts and update known_hosts file
[STEP 3 of 5] authorize current user on remote hosts
... send to BI-greenplum-02
... send to BI-greenplum-03
***
*** Enter password for BI-greenplum-03:
... send to BI-greenplum-04
[STEP 4 of 5] determine common authentication file content
[STEP 5 of 5] copy authentication files to all remote hosts
... finished key exchange with BI-greenplum-02
... finished key exchange with BI-greenplum-03
... finished key exchange with BI-greenplum-04
[INFO] completed successfully
10.初始化新扩展（在master上操作）
[gpadmin@BI-greenplum-01 ~]$ vi hosts_expand
BI-greenplum-03
BI-greenplum-04
根据自己情况来增加
[gpadmin@BI-greenplum-01 ~]$ gpexpand -f hosts_expand
20171208:00:55:14:023306 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-local Greenplum Version: 'postgres (Greenplum Database) 4.3.3.1 build 1'
20171208:00:55:14:023306 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-master Greenplum Version: 'PostgreSQL 8.2.15 (Greenplum Database 4.3.3.1 build 1) on x86_64-unknown-linux-gnu, compiled by GCC gcc (GCC) 4.4.2 compiled on Oct 10 2014 14:31:57'
20171208:00:55:14:023306 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Querying gpexpand schema for current expansion state
System Expansion is used to add segments to an existing GPDB array.
gpexpand did not detect a System Expansion that is in progress.
Before initiating a System Expansion, you need to provision and burn-in
the new hardware. Please be sure to run gpcheckperf/gpcheckos to make
sure the new hardware is working properly.
Please refer to the Admin Guide for more information.
Would you like to initiate a new System Expansion Yy|Nn (default=N):
> y
You must now specify a mirroring strategy for the new hosts. Spread mirroring places
a given hosts mirrored segments each on a separate host. You must be
adding more hosts than the number of segments per host to use this.
Grouped mirroring places all of a given hosts segments on a single
mirrored host. You must be adding at least 2 hosts in order to use this.
What type of mirroring strategy would you like?
spread|grouped (default=grouped):
>
By default, new hosts are configured with the same number of primary
segments as existing hosts. Optionally, you can increase the number
of segments per host.
For example, if existing hosts have two primary segments, entering a value
of 2 will initialize two additional segments on existing hosts, and four
segments on new hosts. In addition, mirror segments will be added for
these new primary segments if mirroring is enabled.
How many new primary segments per host do you want to add? (default=0):
> 4
Enter new primary data directory 1:
> /app/data/gp1
Enter new primary data directory 2:
> /app/data/gp2
Enter new primary data directory 3:
> /app/data/gp3
Enter new primary data directory 4:
> /app/data/gp4
Enter new mirror data directory 1:
> /app/data/gpm1
Enter new mirror data directory 2:
> /app/data/gpm2
Enter new mirror data directory 3:
> /app/data/gpm3
Enter new mirror data directory 4:
> /app/data/gpm4
Generating configuration file...
20171208:00:57:18:023306 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Generating input file...
Input configuration files were written to 'gpexpand_inputfile_20171208_005718' and 'None'.
Please review the file and make sure that it is correct then re-run
with: gpexpand -i gpexpand_inputfile_20171208_005718 -D trjdb
20171208:00:57:18:023306 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Exiting...
会生成一个名为gpexpand_inputfile_20171208_005718配置文件，需要修改后才能通过配置文件扩展数据库
原文件如：红色是保存的需要的
[gpadmin@BI-greenplum-01 ~]$ cat gpexpand_inputfile_20171208_005718
BI-greenplum-03:BI-greenplum-03:40000:/app/data/gp1/gpseg8:19:8:p:41000
BI-greenplum-04:BI-greenplum-04:50000:/app/data/gpm1/gpseg8:31:8:m:51000
BI-greenplum-03:BI-greenplum-03:40001:/app/data/gp2/gpseg9:20:9:p:41001
BI-greenplum-04:BI-greenplum-04:50001:/app/data/gpm2/gpseg9:32:9:m:51001
BI-greenplum-03:BI-greenplum-03:40002:/app/data/gp3/gpseg10:21:10:p:41002
BI-greenplum-04:BI-greenplum-04:50002:/app/data/gpm3/gpseg10:33:10:m:51002
BI-greenplum-03:BI-greenplum-03:40003:/app/data/gp4/gpseg11:22:11:p:41003
BI-greenplum-04:BI-greenplum-04:50003:/app/data/gpm4/gpseg11:34:11:m:51003
BI-greenplum-04:BI-greenplum-04:40000:/app/data/gp1/gpseg12:23:12:p:41000
BI-greenplum-03:BI-greenplum-03:50000:/app/data/gpm1/gpseg12:27:12:m:51000
BI-greenplum-04:BI-greenplum-04:40001:/app/data/gp2/gpseg13:24:13:p:41001
BI-greenplum-03:BI-greenplum-03:50001:/app/data/gpm2/gpseg13:28:13:m:51001
BI-greenplum-04:BI-greenplum-04:40002:/app/data/gp3/gpseg14:25:14:p:41002
BI-greenplum-03:BI-greenplum-03:50002:/app/data/gpm3/gpseg14:29:14:m:51002
BI-greenplum-04:BI-greenplum-04:40003:/app/data/gp4/gpseg15:26:15:p:41003
BI-greenplum-03:BI-greenplum-03:50003:/app/data/gpm4/gpseg15:30:15:m:51003
BI-greenplum-01:BI-greenplum-01:40004:/app/data/gp1/gpseg16:35:16:p:41004
BI-greenplum-02:BI-greenplum-02:50004:/app/data/gpm1/gpseg16:55:16:m:51004
BI-greenplum-01:BI-greenplum-01:40005:/app/data/gp2/gpseg17:36:17:p:41005
BI-greenplum-02:BI-greenplum-02:50005:/app/data/gpm2/gpseg17:56:17:m:51005
BI-greenplum-01:BI-greenplum-01:40006:/app/data/gp3/gpseg18:37:18:p:41006
BI-greenplum-02:BI-greenplum-02:50006:/app/data/gpm3/gpseg18:57:18:m:51006
BI-greenplum-01:BI-greenplum-01:40007:/app/data/gp4/gpseg19:38:19:p:41007
BI-greenplum-02:BI-greenplum-02:50007:/app/data/gpm4/gpseg19:58:19:m:51007
BI-greenplum-02:BI-greenplum-02:40004:/app/data/gp1/gpseg20:39:20:p:41004
BI-greenplum-03:BI-greenplum-03:50004:/app/data/gpm1/gpseg20:59:20:m:51004
BI-greenplum-02:BI-greenplum-02:40005:/app/data/gp2/gpseg21:40:21:p:41005
BI-greenplum-03:BI-greenplum-03:50005:/app/data/gpm2/gpseg21:60:21:m:51005
BI-greenplum-02:BI-greenplum-02:40006:/app/data/gp3/gpseg22:41:22:p:41006
BI-greenplum-03:BI-greenplum-03:50006:/app/data/gpm3/gpseg22:61:22:m:51006
BI-greenplum-02:BI-greenplum-02:40007:/app/data/gp4/gpseg23:42:23:p:41007
BI-greenplum-03:BI-greenplum-03:50007:/app/data/gpm4/gpseg23:62:23:m:51007
BI-greenplum-03:BI-greenplum-03:40004:/app/data/gp1/gpseg24:43:24:p:41004
BI-greenplum-04:BI-greenplum-04:50004:/app/data/gpm1/gpseg24:63:24:m:51004
BI-greenplum-03:BI-greenplum-03:40005:/app/data/gp2/gpseg25:44:25:p:41005
BI-greenplum-04:BI-greenplum-04:50005:/app/data/gpm2/gpseg25:64:25:m:51005
BI-greenplum-03:BI-greenplum-03:40006:/app/data/gp3/gpseg26:45:26:p:41006
BI-greenplum-04:BI-greenplum-04:50006:/app/data/gpm3/gpseg26:65:26:m:51006
BI-greenplum-03:BI-greenplum-03:40007:/app/data/gp4/gpseg27:46:27:p:41007
BI-greenplum-04:BI-greenplum-04:50007:/app/data/gpm4/gpseg27:66:27:m:51007
BI-greenplum-04:BI-greenplum-04:40004:/app/data/gp1/gpseg28:47:28:p:41004
BI-greenplum-01:BI-greenplum-01:50004:/app/data/gpm1/gpseg28:51:28:m:51004
BI-greenplum-04:BI-greenplum-04:40005:/app/data/gp2/gpseg29:48:29:p:41005
BI-greenplum-01:BI-greenplum-01:50005:/app/data/gpm2/gpseg29:52:29:m:51005
BI-greenplum-04:BI-greenplum-04:40006:/app/data/gp3/gpseg30:49:30:p:41006
BI-greenplum-01:BI-greenplum-01:50006:/app/data/gpm3/gpseg30:53:30:m:51006
BI-greenplum-04:BI-greenplum-04:40007:/app/data/gp4/gpseg31:50:31:p:41007
BI-greenplum-01:BI-greenplum-01:50007:/app/data/gpm4/gpseg31:54:31:m:51007
修改后如下：
然后运行gpexpand脚本
gpexpand -i gpexpand_inputfile_20171208_005718 -D trjdb
[gpadmin@BI-greenplum-01 ~]$ gpexpand -i gpexpand_inputfile_20171208_005718 -D trjdb
20171208:01:03:10:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-local Greenplum Version: 'postgres (Greenplum Database) 4.3.3.1 build 1'
20171208:01:03:10:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-master Greenplum Version: 'PostgreSQL 8.2.15 (Greenplum Database 4.3.3.1 build 1) on x86_64-unknown-linux-gnu, compiled by GCC gcc (GCC) 4.4.2 compiled on Oct 10 2014 14:31:57'
20171208:01:03:11:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Querying gpexpand schema for current expansion state
20171208:01:03:11:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Readying Greenplum Database for a new expansion
20171208:01:03:25:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Checking database trjdb for unalterable tables...
20171208:01:03:25:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Checking database postgres for unalterable tables...
20171208:01:03:25:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Checking database template1 for unalterable tables...
20171208:01:03:25:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Checking database trjdb for tables with unique indexes...
20171208:01:03:25:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Checking database postgres for tables with unique indexes...
20171208:01:03:25:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Checking database template1 for tables with unique indexes...
20171208:01:03:25:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Syncing Greenplum Database extensions
20171208:01:03:25:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-The packages on BI-greenplum-03 are consistent.
20171208:01:03:26:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-The packages on BI-greenplum-04 are consistent.
20171208:01:03:27:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Creating segment template
20171208:01:03:27:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-VACUUM FULL on the catalog tables
20171208:01:03:28:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Starting copy of segment dbid 1 to location /app/master/gpexpand_12082017_23572
20171208:01:03:28:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Copying postgresql.conf from existing segment into template
20171208:01:03:29:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Copying pg_hba.conf from existing segment into template
20171208:01:03:29:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Adding new segments into template pg_hba.conf
20171208:01:03:29:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Creating schema tar file
20171208:01:03:29:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Distributing template tar file to new hosts
20171208:01:03:31:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Configuring new segments (primary)
20171208:01:03:32:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Configuring new segments (mirror)
20171208:01:03:33:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Backing up pg_hba.conf file on original segments
20171208:01:03:33:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Copying new pg_hba.conf file to original segments
20171208:01:03:33:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Configuring original segments
20171208:01:03:33:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Cleaning up temporary template files
20171208:01:03:34:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Starting Greenplum Database in restricted mode
20171208:01:03:42:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Stopping database
20171208:01:03:55:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Checking if Transaction filespace was moved
20171208:01:03:55:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Checking if Temporary filespace was moved
20171208:01:03:55:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Configuring new segment filespaces
20171208:01:03:55:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Cleaning up databases in new segments.
20171208:01:03:55:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Starting master in utility mode
20171208:01:03:56:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Stopping master in utility mode
20171208:01:04:03:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Starting Greenplum Database in restricted mode
20171208:01:04:11:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Creating expansion schema
20171208:01:04:12:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Populating gpexpand.status_detail with data from database trjdb
20171208:01:04:12:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Populating gpexpand.status_detail with data from database postgres
20171208:01:04:13:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Populating gpexpand.status_detail with data from database template1
20171208:01:04:14:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Stopping Greenplum Database
20171208:01:04:27:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Starting Greenplum Database
20171208:01:04:34:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Starting new mirror segment synchronization
20171208:01:04:48:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-************************************************
20171208:01:04:48:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Initialization of the system expansion complete.
20171208:01:04:48:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-To begin table expansion onto the new segments
20171208:01:04:48:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-rerun gpexpand
20171208:01:04:48:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-************************************************
20171208:01:04:48:023572 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Exiting...
以上说明增加计算节点成功
假如上一步失败了，怎么办？
启动限制模式，回滚。
gpstart -R
gpexpand --rollback -D trjdb
gpstart -a
然后找问题继续上一步，直到成功。
可以采用脚本进行表重分布
[gpadmin@BI-greenplum-01 ~]$ gpexpand -d 60:00:00
20171208:01:09:08:026159 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-local Greenplum Version: 'postgres (Greenplum Database) 4.3.3.1 build 1'
20171208:01:09:08:026159 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-master Greenplum Version: 'PostgreSQL 8.2.15 (Greenplum Database 4.3.3.1 build 1) on x86_64-unknown-linux-gnu, compiled by GCC gcc (GCC) 4.4.2 compiled on Oct 10 2014 14:31:57'
20171208:01:09:09:026159 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Querying gpexpand schema for current expansion state
20171208:01:09:14:026159 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-EXPANSION COMPLETED SUCCESSFULLY
20171208:01:09:14:026159 gpexpand:BI-greenplum-01:gpadmin-[INFO]:-Exiting...
查看节点状态，红色是新增加的
[gpadmin@BI-greenplum-01 ~]$ psql -d trjdb
psql (8.2.15)
Type "help" for help.
trjdb=# select a.dbid,a.content,a.role,a.port,a.hostname,b.fsname,c.fselocation from gp_segment_configuration a,pg_filespace b,pg_filespace_entry c where a.dbid=c.fsedbid and b.oid=c.fsefsoid order by content;
dbid | content | role | port | hostname | fsname | fselocation
------+---------+------+-------+-----------------+-----------+------------------------
1 | -1 | p | 5432 | BI-greenplum-01 | pg_system | /app/master/gpseg-1
18 | -1 | m | 5432 | BI-greenplum-02 | pg_system | /app/master/gpseg-1
10 | 0 | m | 50000 | BI-greenplum-02 | pg_system | /app/data/gpm1/gpseg0
2 | 0 | p | 40000 | BI-greenplum-01 | pg_system | /app/data/gp1/gpseg0
3 | 1 | p | 40001 | BI-greenplum-01 | pg_system | /app/data/gp2/gpseg1
11 | 1 | m | 50001 | BI-greenplum-02 | pg_system | /app/data/gpm2/gpseg1
4 | 2 | p | 40002 | BI-greenplum-01 | pg_system | /app/data/gp3/gpseg2
12 | 2 | m | 50002 | BI-greenplum-02 | pg_system | /app/data/gpm3/gpseg2
5 | 3 | p | 40003 | BI-greenplum-01 | pg_system | /app/data/gp4/gpseg3
13 | 3 | m | 50003 | BI-greenplum-02 | pg_system | /app/data/gpm4/gpseg3
6 | 4 | p | 40000 | BI-greenplum-02 | pg_system | /app/data/gp1/gpseg4
14 | 4 | m | 50000 | BI-greenplum-01 | pg_system | /app/data/gpm1/gpseg4
15 | 5 | m | 50001 | BI-greenplum-01 | pg_system | /app/data/gpm2/gpseg5
7 | 5 | p | 40001 | BI-greenplum-02 | pg_system | /app/data/gp2/gpseg5
16 | 6 | m | 50002 | BI-greenplum-01 | pg_system | /app/data/gpm3/gpseg6
8 | 6 | p | 40002 | BI-greenplum-02 | pg_system | /app/data/gp3/gpseg6
17 | 7 | m | 50003 | BI-greenplum-01 | pg_system | /app/data/gpm4/gpseg7
9 | 7 | p | 40003 | BI-greenplum-02 | pg_system | /app/data/gp4/gpseg7
31 | 8 | m | 50000 | BI-greenplum-04 | pg_system | /app/data/gpm1/gpseg8
19 | 8 | p | 40000 | BI-greenplum-03 | pg_system | /app/data/gp1/gpseg8
32 | 9 | m | 50001 | BI-greenplum-04 | pg_system | /app/data/gpm2/gpseg9
20 | 9 | p | 40001 | BI-greenplum-03 | pg_system | /app/data/gp2/gpseg9
33 | 10 | m | 50002 | BI-greenplum-04 | pg_system | /app/data/gpm3/gpseg10
21 | 10 | p | 40002 | BI-greenplum-03 | pg_system | /app/data/gp3/gpseg10
22 | 11 | p | 40003 | BI-greenplum-03 | pg_system | /app/data/gp4/gpseg11
34 | 11 | m | 50003 | BI-greenplum-04 | pg_system | /app/data/gpm4/gpseg11
27 | 12 | m | 50000 | BI-greenplum-03 | pg_system | /app/data/gpm1/gpseg12
23 | 12 | p | 40000 | BI-greenplum-04 | pg_system | /app/data/gp1/gpseg12
28 | 13 | m | 50001 | BI-greenplum-03 | pg_system | /app/data/gpm2/gpseg13
24 | 13 | p | 40001 | BI-greenplum-04 | pg_system | /app/data/gp2/gpseg13
29 | 14 | m | 50002 | BI-greenplum-03 | pg_system | /app/data/gpm3/gpseg14
25 | 14 | p | 40002 | BI-greenplum-04 | pg_system | /app/data/gp3/gpseg14
26 | 15 | p | 40003 | BI-greenplum-04 | pg_system | /app/data/gp4/gpseg15
30 | 15 | m | 50003 | BI-greenplum-03 | pg_system | /app/data/gpm4/gpseg15
(34 rows)
本文来源：https://blog.csdn.net/weixin_34409357/article/details/85081676
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