centos7安装greenplum5.18

greenplum在centos里面支持的最好，安装包在http://gopivotal.com/products/pivotal-greenplum-database下载，下载el7版本的对应centos7

yum install -y net-tools which openssh-clients openssh-server less zip unzip iproute.x86_64
1.创建用户
groupadd -g 530 gpadmin
useradd -g 530 -u 530 -m -d /home/gpadmin -s /bin/bash gpadmin
chown -R gpadmin:gpadmin /home/gpadmin
echo "gpadmin" | passwd --stdin gpadmin
2.ssh免密登录到其他主机
ssh-keygen -t rsa -f /etc/ssh/ssh_host_rsa_key
ssh-keygen -t ecdsa -f /etc/ssh/ssh_host_ecdsa_key
ssh-keygen -t ed25519 -f /etc/ssh/ssh_host_ed25519_key
/usr/sbin/sshd
systemctl start sshd.service
3.修改/etc/sysctl.conf,添加如下内容到最后
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.core.netdev_max_backlog = 30000
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_tw_recycle = 1
net.ipv4.ip_forward = 0
net.ipv4.conf.default.accept_source_route = 0
net.ipv4.tcp_max_syn_backlog = 4096
net.ipv4.conf.all.arp_filter = 1
net.ipv4.ip_local_port_range = 1025 65535
vm.overcommit_memory = 2
添加之后执行 sysctl -p使配置生效
4.在/etc/security/limits.conf的最后添加
* soft nofile 65536
* hard nofile 65536
* soft nproc 131072
* hard nproc 131072
5.设置io的调度算法，查看/sys/block/目录下面的磁盘有那些，然后执行
echo deadline > /sys/block/sda/queue/scheduler
6.cd到greenplum`的文件目录执行greenplum-db-5.11.3-rhel7-x86_64.bin --prefix=[安装目录/home/gpadmin/greenplum]
7.cd到greenplum的安装目录，执行
source ./greenplum_path.sh 使环境变量生效
8.在安装目录下创建文件all_hosts填写集群的ip
192.168.0.8
192.168.0.9
192.168.0.10
9.执行gpssh-exkeys -f all_hosts，执行成功后再执行
10.执行gpseginstall -f all_hosts -u gpadmin -p gpadmin使seg节点安装greenplum
11.执行gpssh -f all_hosts
mkdir -p /home/gpadmin/greenplum/gpdata/gpmaster
mkdir -p /home/gpadmin/greenplum/gpdata/gpdatap1
mkdir -p /home/gpadmin/greenplum/gpdata/gpdatap2
mkdir -p /home/gpadmin/greenplum/gpdata/gpdatam1
mkdir -p /home/gpadmin/greenplum/gpdata/gpdatam2
12.su - gpadmin
vi /home/gpadmin/.bashrc
添加
source /home/gpadmin/greenplum/greenplum_path.sh
export MASTER_DATA_DIRECTORY=/home/gpadmin/greenplum/gpdata/gpmaster/gpseg-1
export GPPORT=5432
export PGDATABASE=testDB
13.安装ntp服务，yum install ntp -y
vi /etc/ntp.conf
添加serer 127.127.1.0
在seg里面添加 server sdw的ip
sdw执行时间同步的命令
gpssh -f all_hosts -v -e 'ntpd'
14.执行gpcheck -f all_hosts -m localhost
查看有没有报错，如果是说centos里面的两个虚拟磁盘的io调度算法是none的话，可以忽略这个错误进行下一步，因为greenplum数据库用不到虚拟磁盘，不会有影响。
13.先将/home/gpadmin/greenplum/docs/cli_help/gpconfigs/gpinitsystem_config备份，修改gpinitsystem_config
declare -a DATA_DIRECTORY=(/home/gpadmin/greenplum/gpdata/gpdatap1 /home/gpadmin/greenplum/gpdata/gpdatap2)
MASTER_DIRECTORY=/home/gpadmin/greenplum/gpdata/gpmaster
declare -a MIRROR_DATA_DIRECTORY=(/home/gpadmin/greenplum/gpdata/gpdatam1 /home/gpadmin/greenplum/gpdata/gpdatam2)
14.初始化数据库，新建seg_hosts把seg的ip写入文件
gpinitsystem -c gpinitsystem_config -h seg_hosts
15.启动数据库gpstart -a
16.停止数据库gpstop -a