#### 环境说明
> 本次环境一共四台虚拟机，一台为master,三台为segment节点，其中segment3节点为standby master。 主机名：gpms,gps1,gps2,gps3

> 版本信息，redhat7.3+gp5.16

#### 前期准备
```
--系统参数
cat <<EOF >>/etc/sysctl.conf
#add by xyy for greenplum 20181016
kernel.shmmax = 500000000
kernel.shmmni = 4096
kernel.shmall = 4000000000
kernel.sem = 500 1024000 200 4096
kernel.sysrq = 1
kernel.core_uses_pid = 1
kernel.msgmnb = 65536
kernel.msgmax = 65536
kernel.msgmni = 2048
net.ipv4.tcp_syncookies = 1
net.ipv4.conf.default.accept_source_route = 0
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_max_syn_backlog = 4096
net.ipv4.conf.all.arp_filter = 1
net.ipv4.ip_local_port_range = 10000 65535
net.core.netdev_max_backlog = 10000
net.core.rmem_max = 2097152
net.core.wmem_max = 2097152
vm.overcommit_memory = 2
vm.overcommit_memory = 2
vm.swappiness = 10
vm.dirty_expire_centisecs = 500
vm.dirty_writeback_centisecs = 100
vm.dirty_background_ratio = 0
vm.dirty_ratio=0
vm.dirty_background_bytes = 1610612736
vm.dirty_bytes = 4294967296
EOF

--资源限制  vi /etc/security/limits.conf
* soft nofile 65536
* hard nofile 65536
* soft nproc 131072
* hard nproc 131072
* soft core unlimited
```

##### 创建用户，目录等，每个节点均需要
```
groupdel gpadmin
userdel gpadmin
groupadd -g 530 gpadmin
useradd -g 530 -u 530 -m -d /home/gpadmin  -s /bin/bash gpadmin

chown -R gpadmin:gpadmin /home/gpadmin
passwd gpadmin

mkdir /opt/greenplum
chown -R gpadmin:gpadmin /opt/greenplum

--hosts
192.168.80.161 gpms
192.168.80.162 gps1
192.168.80.163 gps2
192.168.80.164 gps3
```

##### master节点安装

```
su - gpadmin
/opt/greenplum/greenplum-db

./greenplum-db-5.16.0-rhel7-x86_64.bin

source /opt/greenplum/greenplum-db/greenplum_path.sh

[gpadmin@gptest conf]$ pwd
/home/gpadmin/conf
[gpadmin@gptest conf]$ cat hostlist 
gpms
gps1
gps2
gps3
[gpadmin@gptest conf]$ cat seg_hosts 
gps1
gps2
gps3
[gpadmin@gptest conf]$ 
```

##### 配置互信，批量打包解压

```
--ssh 互信
 gpssh-exkeys -f hostlist 
 
 --批量操作命令
 gpssh -f hostlist
 
 --打包
 tar -cvf gp5.6.tar greenplum-db-5.16.0/
 
 gpscp -f /home/gpadmin/conf/seg_hosts gp5.6.tar =:/opt/greenplum/
 
 gpssh -f seg_hosts 
 cd /opt/gr*
 tar -xvf gp5.6.tar 
 
 ln -s greenplum-db-5.16.0 greenplum-db
 --创建相关目录
 gpssh -f hostlist
 
mkdir -p /home/gpadmin/gpdata/gpmaster
mkdir -p /home/gpadmin/gpdata/gpdatap1
mkdir -p /home/gpadmin/gpdata/gpdatap2
mkdir -p /home/gpadmin/gpdata/gpdatam1
mkdir -p /home/gpadmin/gpdata/gpdatam2
 
 --配置环境变量
 echo "source /opt/greenplum/greenplum-db/greenplum_path.sh" >> /home/gpadmin/.bash_profile
 echo "export MASTER_DATA_DIRECTORY=/home/gpadmin/gpdata/gpmaster/gpseg-1" >> /home/gpadmin/.bash_profile
 echo "export PGPORT=2345" >> /home/gpadmin/.bash_profile
 echo "export PGDATABASE=testdb" >> /home/gpadmin/.bash_profile
```

#### 数据库初始化

```
cd /opt/greenplum/greenplum-db/docs/cli_help/gpconfigs
[gpadmin@gptest conf]$ vi gpinitsystem_config 
[gpadmin@gptest conf]$ cat gpinitsystem_config | grep -v '#' | grep -v '^$'
ARRAY_NAME="Greenplum Data Platform"
#数据节点名称前缀
SEG_PREFIX=gpseg
#primary 起始端口号
PORT_BASE=33000
#primary 数据目录
declare -a DATA_DIRECTORY=(/home/gpadmin/gpdata/gpdatap1 /home/gpadmin/gpdata/gpdatap2)
#master所在主机
MASTER_HOSTNAME=gpms
#master数据目录
MASTER_DIRECTORY=/home/gpadmin/gpdata/gpmaster
MASTER_PORT=2345
TRUSTED_SHELL=/usr/bin/ssh
CHECK_POINT_SEGMENTS=8
ENCODING=UNICODE
#mirror 起始端口号
MIRROR_PORT_BASE=43000
#primary segment 主备同步的起始端口号
REPLICATION_PORT_BASE=34000
#mirror segment主备同步的起始端口号
MIRROR_REPLICATION_PORT_BASE=44000
#mirror segment数据目录
declare -a MIRROR_DATA_DIRECTORY=(/home/gpadmin/gpdata/gpdatam1 /home/gpadmin/gpdata/gpdatam2)

--初始化数据库
gpinitsystem -c gpinitsystem_config -h seg_hosts -s gps3 -S
```

##### 创建数据库等操作命令参考
```
--create
select * from pg_filespace;
create tablespace tbs_siling filespace siling_fs;
select a.spcname,b.fsname from pg_tablespace a,pg_filespace b where spcfsoid=b.oid;

创建 数据库 与 用户 并 授权
create database testdb tablespace tbs_siling;;
create user testuser password 'testuser';
grant all on database testdb to testuser;
select rolname,oid from pg_roles;
--设置用户的 表空间 及 授权
alter user testuser set default_tablespace='tbs_siling';
grant all on tablespace tbs_siling to testuser;
--创建 模式 并 授权
create schema siling_mode;
grant all on schema siling_mode to testuser;

--启停数据库
gpstart -a
gpstop -a

--远程连接数据库
--修改密码
alter role gpadmin with password 'gpadmin';

host     all         all         192.168.80.0/0       md5

gpstop -u

psql -h 192.168.80.161 -d testdb -p 2345

--greenplum 数据分布在所有segment上，当查询数据时，master展现的数据时限接收到的数据顺序，每个segment的数据到达master的顺序是随机的。所以select顺序也是随机的。

select gp_segment_id ,count(*) from test2020 group by gp_segment_id;

--集群节点分布情况  mode:s 表示已同步，r重新同步，c不同步。 status:u up  d down
select * from gp_segment_configuration;
```

至此，gp集群配置完成，三个segment节点，共有6个segment，每个节点2个primary segment，2个mirror segment，可根据需求自行设置。欢迎各位继续探讨

ITPub博客

【greenplum】greenplum集群搭建

最新文章