CentOS上Greenplum数据库安装维护手册(单机版)

下面简述一下在CentOS  7.6安装Greenplum（5.10.2）的主要步骤

1、创建gpadmin用户

[[email protected] ~]# useradd gpadmin
[[email protected] ~]# passwd gpadmin

2、上传并安装Greenplum

   本例用的是greenplum-db-5.10.2-rhel7-x86_64.rpm安装包，先上传至服务器，新建数据库安装目录：/home/greenplum，执行以下rpm安装命令，安装后的目录为：/home/greenplum/greenplum-db

  切换到用户gpadmin(su - gpadmin )，后续的命令都在该用户下执行

rpm -ivh  --prefix=/home/greenplum   greenplum-db-5.10.2-rhel7-x86_64.rpm

3、在/home/greenplum/greenplum-db 中 新建并写入文件seg_hosts和hostlist， 写入内容为主机名bigdata-01，主机名可以通过执行hostname获得

4、使用gpssh-exkeys将所有机器通道打开

/home/greenplum/greenplum-db/bin/gpssh-exkeys -f   /home/greenplum/greenplum-db/hostlist

 如果出现类似错误：
 error: unable to import module: No module named gppylib.commands

 解决方案：

yum install -y python-py
easy_install pip
pip install pygresql

 如在执行上面命令中出现：
 Exception: pg_config tool is not available
 解决方案：

 yum install postgresql-devel

 如果类似错误：

 Error: unable to import module: No module named gppylib.commands解决方案

source  /home/greenplum/greenplum-db/greenplum_path.sh
 或者
source /etc/profile

5、新建数据目录

 

cd  /home/greenplum/greenplum-db
mkdir gpdata
cd  /home/greenplum/greenplum-db/gpdata
mkdir  gpmaster gpdatap1  gpdatap2  gpdatam1  gpdatam2

6、 将 ~/greenplum-db/docs/cli_help/gpconfigs/gpinitsystem_config拷贝为~/greenplum-db/initgp_config

 cp  /home/greenplum/greenplum-db/docs/cli_help/gpconfigs/gpinitsystem_config  /home/greenplum/greenplum-db/initgp_config

7、修改~/.bashrc

  注意当前操作用户为gpadmin，在 /home/gpadmin 下执行： vi .bashrc，在文件中添加：

source   /home/greenplum/greenplum-db/greenplum_path.sh
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/home/greenplum/greenplum-db/lib
export GPHOME=/home/greenplum/greenplum-db
export MASTER_DATA_DIRECTORY=/home/greenplum/greenplum-db/gpdata/gpmaster/gpseg-1

然后令其生效：source .bashrc

8、 修改~/greenplum-db/initgp_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=33000
 
#### 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=(/home/greenplum/greenplum-db/gpdata/gpdatap1  /home/greenplum/greenplum-db/gpdata/gpdatap2)
 
#### OS-configured hostname or IP address of the master host.
MASTER_HOSTNAME=bigdata-01
#### File system location where the master data directory 
#### will be created.
MASTER_DIRECTORY=/home/greenplum/greenplum-db/gpdata/gpmaster
 
#### Port number for the master instance. 
MASTER_PORT=2345
 
#### 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=utf-8
 
################################################
#### OPTIONAL MIRROR PARAMETERS
################################################
 
#### Base number by which mirror segment port numbers 
#### are calculated.
MIRROR_PORT_BASE=43000
 
#### Base number by which primary file replication port 
#### numbers are calculated.
REPLICATION_PORT_BASE=34000
 
#### Base number by which mirror file replication port 
#### numbers are calculated. 
MIRROR_REPLICATION_PORT_BASE=44000
 
#### 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=(/home/greenplum/greenplum-db/gpdata/gpdatam1  /home/greenplum/greenplum-db/gpdata/gpdatam2)
 
################################################
#### OTHER OPTIONAL PARAMETERS
################################################
 
#### Create a database of this name after initialization.
DATABASE_NAME=test
 
#### Specify the location of the host address file here instead of
#### with the the -h option of gpinitsystem.
MACHINE_LIST_FILE=/home/greenplum/greenplum-db/seg_hosts
#
MASTER_MAX_CONNECT=100

 

红字为需要修改及特别留意之处

9  、运行

/home/greenplum/greenplum-db/bin/gpseginstall -f  /home/greenplum/greenplum-db/hostlist -u  gpadmin  -p  前面设置的密码

执行完后继续执行： 
/home/greenplum/greenplum-db/bin/gpinitsystem -c   /home/greenplum/greenplum-db/initgp_config 

当显示的结果中有，“Greenplum Database instance successfully created”即安装成功。

即可以使用psql -p 2345 -d postgres进行访问。

10、 日常维护命令

su - gpadmin
启停:
停 gpstop -M fast
启 gpstart

查看状态:
gpstate -s
ps -ef|grep greenplum