『GreenPlum系列』GreenPlum 4节点集群安装（图文教程）

Posted 2020-08-15 何石的博客

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目标架构如上图

一、硬件评估

cpu主频，核数
推荐CPU核数与磁盘数的比例在12:12以上
Instance上执行时只能利用一个CPU核资源进行计算，推荐高主频
内存容量
网络带宽
重分布操作
Raid性能
条带宽度设置
回写特性

二、操作系统

1、在SUSE或者RedHat上使用xfs(操作系统使用ext3)

在Solaris上使用zfs(操作系统使用ufs)

2、系统包

出现如下界面，按照下面的说明进行勾选，之后一直【Next】到开始安装。

--》【Desktop Environments】全置空

--》【Applications】中【Editors】和【Text-based Internet】保持不动，其他置空

--》【Development】中【Development Libraries】和【Development Tools】全选

其他置空

--》【Servers】全部置空

--》【Base System】置空【X Window System】

3、注意：SELINUX & IPTABLES

对于RedHat6.x系统来说，没有重启后的配置画面，缺省状态下SELINUX

和IPTABLES都是开启状态。在登录系统后还需要进行如下操作：
关闭SELINUX – 使用getenforce命令检查SELINUX状态，若结果不
是”Disabled”，可使用setenforce 0命令临时关闭SELINUX。要永久关闭
SELINUX，需修改/etc/selinux/config配置文件，修改配置为
SELINUX=disabled。
关闭IPTABLES – 使用service iptables status命令检查IPTABLES状态，若结
果不是”Firewall is stopped”，可使用service iptables stop命令关闭IPTABLES。
要永久关闭IPTABLES，使用chkconfig iptables off命令。

4、禁用OOM限制器（redhat5没有这个问题）

5、将/etc/sysctl.conf文件的内容修改为如下内容，重启生效(或执行sysctl -p生效)

kernel.shmmax = 5000000000
kernel.shmmni = 4096
kernel.shmall = 40000000000
kernel.sem = 250 5120000 100 20480
#SEMMSL SEMMNS SEMOPM SEMMNI
kernel.sysrq = 1
kernel.core_uses_pid = 1
kernel.msgmnb = 65536
kernel.msgmax = 65536
kernel.msgmni = 2048
net.ipv4.tcp_syncookies = 1
net.ipv4.ip_forward = 0
net.ipv4.conf.default.accept_source_route = 0
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_max_syn_backlog = 4096
net.ipv4.conf.default.rp_filter = 1
net.ipv4.conf.default.arp_filter = 1
net.ipv4.conf.all.arp_filter = 1
net.ipv4.ip_local_port_range = 1025 65535
net.core.netdev_max_backlog = 10000
vm.overcommit_memory = 2

6、在/etc/security/limits.conf配置文件末尾处增加如下内容：

* soft nofile 65536

* hard nofile 65536

* soft nproc 131072

* hard nproc 131072

* soft core unlimited

注意：对于RedHat6.x系统，还需要将/etc/security/limits.d/90-nproc.conf文件中

的1024修改为131072。

7、在Linux平台，推荐使用XFS文件系统

GP建议使用下面的挂载参数：

rw,noatime,inode64,allocsize=16m

比如，挂载XFS格式的设备/dev/sdb到目录/data1，/etc/fstab中的配置如下：

/dev/sdb /data1 xfs rw,noatime,inode64,allocsize=16m 1 1

使用XFS文件系统，需安装相应的rpm软件包，并对磁盘设备进行格式化：

# rpm -ivh xfsprogs-2.9.4-4.el5.x86_64.rpm

# mkfs.xfs -f /dev/sdb

8、Linux磁盘I/O调度器对磁盘的访问支持不同的策略，默认的为CFQ，GP建议设置为deadline

要查看某驱动器的I/O调度策略，可通过如下命令查看，下面示例的为正确

的配置：

# cat /sys/block/{devname}/queue/scheduler

noop anticipatory [deadline] cfq

修改磁盘I/O调度策略的方法为，修改/boot/grub/menu.lst文件的启动参数，

在kernel一行的最后追加”elevator=deadline”，如下为正确配置的示例：

[root@gp_test1 ~]# vi /boot/grub/menu.lst

# grub.conf generated by anaconda

# Note that you do not have to rerun grub after making changes to this file

# NOTICE: You have a /boot partition. This means that

# all kernel and initrd paths are relative to /boot/, eg.

# root (hd0,0)

# kernel /vmlinuz-version ro root=/dev/vg00/LV_01

# initrd /initrd-version.img

#boot=/dev/sda

default=0

timeout=5

splashimage=(hd0,0)/grub/splash.xpm.gz

hiddenmenu

title Red Hat Enterprise Linux Server (2.6.18-308.el5)

root (hd0,0)

kernel /vmlinuz-2.6.18-308.el5 ro root=/dev/vg00/LV_01 rhgb quiet elevator=deadline

initrd /initrd-2.6.18-308.el5.img

注意：修改该配置文件需谨慎，错误的修改会导致重启操作系统失败。

9、每个磁盘设备文件需要配置read-ahead(blockdev)值为65536

官方文档的推荐值为16384，但译者认为应该为65536更合理，该值设置的是预读扇区数，

实际上预读的字节数是blockdev设置除以2，而GP缺省的blocksize为32KB，

刚好与65536(32768B/32KB)对应。

检查某块磁盘的read-ahead设置：

# blockdev --getra devname

例如：

# blockdev --getra /dev/sda

65536

修改系统的read-ahead设置，可通过/etc/rc.d/rc.local来修改，在文件尾部追加如下代码：

# blockdev --setra 65536 /dev/mapper/vg00-LV_01

如需临时修改read-ahead设置，可通过执行下面的命令来实现：

# blockdev --setra bytes devname

例如：

# blockdev --setra 65536 /dev/sda

三、运行GP安装程序

1、安装

hosts配置正确很重要。

#hostname gp_test1

#vi /etc/sysconfig/network

#vi /etc/hosts

reboot一下

创建一个host_file，包含了Greenplum部署的所有主机名，内容如下：

mdw1

smdw1

sdw1

sdw2

创建一个hostfile_segonly，包含了所有的Segment Host的主机名，内容如下：

sdw1

sdw2

创建一个hostfile_exkeys，包含了所有的Greenplum主机的网口对应的主机名（因为有可能是双网卡的服务器），内如如下：

mdw1

smdw1

sdw1

sdw2

[root@gp_test1 gp_files]# gpseginstall -f host_file -u gpadmin -p gpadmin

20150312:00:06:39:003425 gpseginstall:gp_test1:root-[INFO]:-Installation Info:
link_name None
binary_path /opt/greenplum
binary_dir_location /opt
binary_dir_name greenplum
20150312:00:06:40:003425 gpseginstall:gp_test1:root-[INFO]:-check cluster password access
20150312:00:06:41:003425 gpseginstall:gp_test1:root-[INFO]:-de-duplicate hostnames
20150312:00:06:41:003425 gpseginstall:gp_test1:root-[INFO]:-master hostname: gp_test1
20150312:00:06:41:003425 gpseginstall:gp_test1:root-[INFO]:-check for user gpadmin on cluster
20150312:00:06:42:003425 gpseginstall:gp_test1:root-[INFO]:-add user gpadmin on master
20150312:00:06:42:003425 gpseginstall:gp_test1:root-[INFO]:-add user gpadmin on cluster
20150312:00:06:43:003425 gpseginstall:gp_test1:root-[INFO]:-chown -R gpadmin:gpadmin /opt/greenplum
20150312:00:06:44:003425 gpseginstall:gp_test1:root-[INFO]:-rm -f /opt/greenplum.tar; rm -f /opt/greenplum.tar.gz
20150312:00:06:44:003425 gpseginstall:gp_test1:root-[INFO]:-cd /opt; tar cf greenplum.tar greenplum
20150312:00:07:03:003425 gpseginstall:gp_test1:root-[INFO]:-gzip /opt/greenplum.tar
20150312:00:07:34:003425 gpseginstall:gp_test1:root-[INFO]:-remote command: mkdir -p /opt
20150312:00:07:34:003425 gpseginstall:gp_test1:root-[INFO]:-remote command: rm -rf /opt/greenplum
20150312:00:07:35:003425 gpseginstall:gp_test1:root-[INFO]:-scp software to remote location
20150312:00:07:52:003425 gpseginstall:gp_test1:root-[INFO]:-remote command: gzip -f -d /opt/greenplum.tar.gz
20150312:00:11:09:003425 gpseginstall:gp_test1:root-[INFO]:-md5 check on remote location
20150312:00:11:15:003425 gpseginstall:gp_test1:root-[INFO]:-remote command: cd /opt; tar xf greenplum.tar
x`xxxxxxx20150312:00:14:40:003425 gpseginstall:gp_test1:root-[INFO]:-remote command: rm -f /opt/greenplum.tar
20150312:00:14:41:003425 gpseginstall:gp_test1:root-[INFO]:-remote command: chown -R gpadmin:gpadmin /opt/greenplum
20150312:00:14:42:003425 gpseginstall:gp_test1:root-[INFO]:-rm -f /opt/greenplum.tar.gz
20150312:00:14:42:003425 gpseginstall:gp_test1:root-[INFO]:-Changing system passwords ...
20150312:00:14:44:003425 gpseginstall:gp_test1:root-[INFO]:-exchange ssh keys for user root
20150312:00:14:51:003425 gpseginstall:gp_test1:root-[INFO]:-exchange ssh keys for user gpadmin
20150312:00:14:58:003425 gpseginstall:gp_test1:root-[INFO]:-/opt/greenplum//sbin/gpfixuserlimts -f /etc/security/limits.conf -u gpadmin
20150312:00:14:58:003425 gpseginstall:gp_test1:root-[INFO]:-remote command: . /opt/greenplum//greenplum_path.sh; /opt/greenplum//sbin/gpfixuserlimts -f /etc/security/limits.conf -u gpadmin
20150312:00:14:59:003425 gpseginstall:gp_test1:root-[INFO]:-version string on master: gpssh version 4.3.4.1 build 2
20150312:00:14:59:003425 gpseginstall:gp_test1:root-[INFO]:-remote command: . /opt/greenplum//greenplum_path.sh; /opt/greenplum//bin/gpssh --version
20150312:00:14:59:003425 gpseginstall:gp_test1:root-[INFO]:-remote command: . /opt/greenplum/greenplum_path.sh; /opt/greenplum/bin/gpssh --version
20150312:00:15:05:003425 gpseginstall:gp_test1:root-[INFO]:-SUCCESS -- Requested commands completed

[root@gp_test1 gp_files]#

2、确认安装

1). 在Master主机以gpadmin用户登录：

$ su - gpadmin

2). 加载GPDB安装目录下的路径文件：

# source /usr/local/greenplum-db/greenplum_path.sh

3). 使用gpssh命令确认是否可以在不提示输入密码的情况下登录到所有安装

了GP软件的主机。使用hostfile_exkeys文件。该文件需包含所有主机的所

有网口对应的主机名。例如：

$ gpssh -f host_file -e ls -l $GPHOME

如果成功登录到所有主机并且未提示输入密码，安装没有问题。所有主机在安

装路径显示相同的内容，且目录的所有权为gpadmin用户。

如果提示输入密码，执行下面的命令重新交换SSH密钥：

$ gpssh-exkeys -f host_file

3、安装 Oracle 兼容函数

作为可选项，许多的Oracle兼容函数在GPDb中是可用的。

在使用Oracle兼容函数之前，需要为没有数据库运行一次安装脚本：

$GPHOME/share/postgresql/contrib/orafunc.sql

例如，在testdb数据库中安装这些函数，使用命令:

$ psql –d testdb –f /opt/greenplum/share/postgresql/contrib/orafunc.sql

要卸载Oracle兼容函数，视角如下脚本：

$GPHOME/share/postgresql/contrib/uninstall_orafunc.sql

4、创建数据存储区域

1)在Master 主机上创建数据目录位置

[root@gp_test1 Server]# mkdir /data/

[root@gp_test1 Server]# mkdir /data/master

[root@gp_test1 Server]# chown -R gpadmin:gpadmin /data/

2)使用gpssh命令在Standby Master上创建与和Master相同的数据存储位置

[root@gp_test1 data]# source /opt/greenplum/greenplum_path.sh

[root@gp_test1 data]# gpssh -h smdw1 -e \'mkdir /data/\'

[smdw1] mkdir /data/

[root@gp_test1 data]# gpssh -h smdw1 -e \'mkdir /data/master\'

[smdw1] mkdir /data/master

[root@gp_test1 data]#

[root@gp_test1 data]# gpssh -h smdw1 -e \'chown -R gpadmin:gpadmin /data/\'

[smdw1] chown -R gpadmin:gpadmin /data/

3)在所有Segment主机上创建数据目录位置
Tips:gpssh -h 针对给出的主机名hostname

gpssh -f 针对files文件里的清单

使用刚刚创建的hostfile_segonly文件指定Segment主机列表。例如：

[root@gp_test1 data]# gpssh -f /dba_files/gp_files/hostfile_segonly -e \'mkdir /data\'

[sdw2] mkdir /data

[sdw1] mkdir /data

[root@gp_test1 data]# gpssh -f /dba_files/gp_files/hostfile_segonly -e \'mkdir /data/primary\'

[sdw2] mkdir /data/primary

[sdw1] mkdir /data/primary

[root@gp_test1 data]# gpssh -f /dba_files/gp_files/hostfile_segonly -e \'mkdir /data/mirror\'

[sdw2] mkdir /data/mirror

[sdw1] mkdir /data/mirror

[root@gp_test1 data]# gpssh -f /dba_files/gp_files/hostfile_segonly -e \'chown -R gpadmin:gpadmin /data/\'

[sdw2] chown -R gpadmin:gpadmin /data/

[sdw1] chown -R gpadmin:gpadmin /data/

4)NTP配置同步系统时钟

参考鸟哥的配置档案：http://linux.vbird.org/linux_server/0440ntp.php

GP建议使用NTP(网络时间协议)来同步GPDB系统中所有主机的系统时钟。

在Segment 主机上，NTP应该配置Master 主机作为主时间源，而Standby作为备选时间源。在Master和Standby上配置NTP到首选的时间源(如果没有更好的选择可以选择Master自身作为最上端的事件源)。

配置NTP

1. 在Master主机，以root登录编辑/etc/ntp.conf文件。设置server参数指向数据中心

的NTP时间服务器。例如(假如10.6.220.20是数据中心NTP服务器的IP地址)：

server 10.6.220.20

2. 在每个Segment主机，以root登录编辑/etc/ntp.conf文件。设置第一个server参数

指向Master主机，第二个server参数指向Standby主机。例如：

server mdw1 prefer

server smdw1

3. 在Standby主机，以root登录编辑/etc/ntp.conf文件。设置第一个server参数指向

Master主机，第二个参数指向数据中心的时间服务器。例如：

server mdw1 prefer

server 10.6.220.20

4. 在Master主机，使用NTP守护进程同步所有Segment主机的系统时钟。例如，使

用gpssh来完成：

# gpssh -f hostfile_ allhosts -v -e \'ntpd\'

5. 要配置集群自动同步系统时钟，应开启各个NTP客户机的ntpd服务，并设置为开机时自动运行：

# /etc/init.d/ntpd start

# chkconfig --level 35 ntpd on

或是service ntpd start ，再设置 ntsysv ，选择ntpd服务

传上NTP主机的/etc/ntp.conf 配置，也就是MASTER，修改部分见下划线

# Permit time synchronization with our time source, but do not
# permit the source to query or modify the service on this system.
restrict default kod nomodify notrap nopeer noquery
restrict -6 default kod nomodify notrap nopeer noquery
# Permit all access over the loopback interface. This could
# be tightened as well, but to do so would effect some of
# the administrative functions.
restrict 127.0.0.1
restrict -6::1
restrict 10.27.1.0 mask 255.255.255.0 nomodify
# Hosts on local network are less restricted.
#restrict 192.168.1.0 mask 255.255.255.0 nomodify notrap
# Use public servers from the pool.ntp.org project.
# Please consider joining the pool (http://www.pool.ntp.org/join.html).
#broadcast 192.168.1.255 key 42 # broadcast server
#broadcastclient # broadcast client
#broadcast 224.0.1.1 key 42 # multicast server
#multicastclient 224.0.1.1 # multicast client
#manycastserver 239.255.254.254 # manycast server
#manycastclient 239.255.254.254 key 42 # manycast client
# Undisciplined Local Clock. This is a fake driver intended for backup
# and when no outside source of synchronized time is available.
server 127.127.1.0# local clock
fudge 127.127.1.0 stratum 10
# Drift file. Put this in a directory which the daemon can write to.
# No symbolic links allowed, either, since the daemon updates the file
# by creating a temporary in the same directory and then rename()\'ing
# it to the file.
enable auth monitor
driftfile /var/lib/ntp/drift
statsdir /var/lib/ntp/ntpstats/
filegen peerstats file peerstats type day enable
filegen loopstats file loopstats type day enable
filegen clockstats file clockstats type day enable
# Key file containing the keys and key identifiers used when operating
# with symmetric key cryptography.
keys /etc/ntp/keys
trustedkey 0
requestkey 0 controlkey
# Specify the key identifiers which are trusted. #trustedkey 4 8 42 # Specify the key identifier to use with the ntpdc utility. #requestkey 8 # Specify the key identifier to use with the ntpq utility. #controlkey 8

5、检查系统环境

用gpadmin登录master主机

加载greenplum_path.sh文件

source /opt/greenplum/greenplum_path.sh

创建一个名为hostfile_gpcheck的文件，包含所有GP主机的主机名，确保无多余空格

vi /dba_files/gp_files/hostfile_gpcheck

mdw1

smdw1

sdw1

sdw2

可以用以下命令来check一下文件是否准确

# gpssh -f /dba_files/gp_files/hostfile_gpcheck -e hostname

这里会返回所有主机的hostname

[gpadmin@gp_test1 ~]$ gpcheck -f /dba_files/gp_files/hostfile_gpcheck -m mdw1 -s smdw1

20150314:20:07:34:017843 gpcheck:gp_test1:gpadmin-[INFO]:-dedupe hostnames
20150314:20:07:34:017843 gpcheck:gp_test1:gpadmin-[INFO]:-Detected platform: Generic Linux Cluster
20150314:20:07:34:017843 gpcheck:gp_test1:gpadmin-[INFO]:-generate data on servers
20150314:20:07:34:017843 gpcheck:gp_test1:gpadmin-[INFO]:-copy data files from servers
20150314:20:07:35:017843 gpcheck:gp_test1:gpadmin-[INFO]:-delete remote tmp files
20150314:20:07:35:017843 gpcheck:gp_test1:gpadmin-[INFO]:-Using gpcheck config file: /opt/greenplum//etc/gpcheck.cnf
20150314:20:07:35:017843 gpcheck:gp_test1:gpadmin-[ERROR]:-GPCHECK_ERROR host(None): utility will not check all settings when run as non-root user
20150314:20:07:35:017843 gpcheck:gp_test1:gpadmin-[ERROR]:-GPCHECK_ERROR host(gp_test4): on device (fd0) IO scheduler \'cfq\' does not match expected value \'deadline\'
20150314:20:07:35:017843 gpcheck:gp_test1:gpadmin-[ERROR]:-GPCHECK_ERROR host(gp_test4): on device (hdc) IO scheduler \'cfq\' does not match expected value \'deadline\'
20150314:20:07:35:017843 gpcheck:gp_test1:gpadmin-[ERROR]:-GPCHECK_ERROR host(gp_test4): on device (sda) IO scheduler \'cfq\' does not match expected value \'deadline\'
20150314:20:07:35:017843 gpcheck:gp_test1:gpadmin-[ERROR]:-GPCHECK_ERROR host(gp_test4): /etc/sysctl.conf value for key \'kernel.shmmax\' has value \'5000000000\' and expects \'500000000\'
20150314:20:07:35:017843 gpcheck:gp_test1:gpadmin-[ERROR]:-GPCHECK_ERROR host(gp_test4): /etc/sysctl.conf value for key \'kernel.sem\' has value \'250 5120000 100 20480\' and expects \'250 512000 100 2048\'
20150314:20:07:35:017843 gpcheck:gp_test1:gpadmin-[ERROR]:-GPCHECK_ERROR host(gp_test4): /etc/sysctl.conf value for key \'kernel.shmall\' has value \'40000000000\' and expects \'4000000000\'
20150314:20:07:35:017843 gpcheck:gp_test1:gpadmin-[ERROR]:-GPCHECK_ERROR host(gp_test1): on device (fd0) IO scheduler \'cfq\' does not match expected value \'deadline\'
20150314:20:07:35:017843 gpcheck:gp_test1:gpadmin-[ERROR]:-GPCHECK_ERROR host(gp_test1): on device (hdc) IO scheduler \'cfq\' does not match expected value \'deadline\'
20150314:20:07:35:017843 gpcheck:gp_test1:gpadmin-[ERROR]:-GPCHECK_ERROR host(gp_test1): on device (sda) IO scheduler \'cfq\' does not match expected value \'deadline\'
20150314:20:07:35:017843 gpcheck:gp_test1:gpadmin-[ERROR]:-GPCHECK_ERROR host(gp_test1): /etc/sysctl.conf value for key \'kernel.shmmax\' has value \'5000000000\' and expects \'500000000\'
20150314:20:07:35:017843 gpcheck:gp_test1:gpadmin-[ERROR]:-GPCHECK_ERROR host(gp_test1): /etc/sysctl.conf value for key \'kernel.sem\' has value \'250 5120000 100 20480\' and expects \'250 512000 100 2048\'
20150314:20:07:35:017843 gpcheck:gp_test1:gpadmin-[ERROR]:-GPCHECK_ERROR host(gp_test1): /etc/sysctl.conf value for key \'kernel.shmall\' has value \'40000000000\' and expects \'4000000000\'
20150314:20:07:35:017843 gpcheck:gp_test1:gpadmin-[ERROR]:-GPCHECK_ERROR host(gp_test2): on device (fd0) IO scheduler \'cfq\' does not match expected value \'deadline\'
20150314:20:07:35:017843 gpcheck:gp_test1:gpadmin-[ERROR]:-GPCHECK_ERROR host(gp_test2): on device (hdc) IO scheduler \'cfq\' does not match expected value \'deadline\'
20150314:20:07:35:017843 gpcheck:gp_test1:gpadmin-[ERROR]:-GPCHECK_ERROR host(gp_test2): on device (sda) IO scheduler \'cfq\' does not match expected value \'deadline\'
20150314:20:07:35:017843 gpcheck:gp_test1:gpadmin-[ERROR]:-GPCHECK_ERROR host(gp_test2): /etc/sysctl.conf value for key \'kernel.shmmax\' has value \'5000000000\' and expects \'500000000\'
20150314:20:07:35:017843 gpcheck:gp_test1:gpadmin-[ERROR]:-GPCHECK_ERROR host(gp_test2): /etc/sysctl.conf value for key \'kernel.sem\' has value \'250 5120000 100 20480\' and expects \'250 512000 100 2048\'
20150314:20:07:35:017843 gpcheck:gp_test1:gpadmin-[ERROR]:-GPCHECK_ERROR host(gp_test2): /etc/sysctl.conf value for key \'kernel.shmall\' has value \'40000000000\' and expects \'4000000000\'
20150314:20:07:35:017843 gpcheck:gp_test1:gpadmin-[ERROR]:-GPCHECK_ERROR host(gp_test3): on device (fd0) IO scheduler \'cfq\' does not match expected value \'deadline\'
20150314:20:07:35:017843 gpcheck:gp_test1:gpadmin-[ERROR]:-GPCHECK_ERROR host(gp_test3): on device (hdc) IO scheduler \'cfq\' does not match expected value \'deadline\'
20150314:20:07:35:017843 gpcheck:gp_test1:gpadmin-[ERROR]:-GPCHECK_ERROR host(gp_test3): on device (sda) IO scheduler \'cfq\' does not match expected value \'deadline\'
20150314:20:07:35:017843 gpcheck:gp_test1:gpadmin-[ERROR]:-GPCHECK_ERROR host(gp_test3): /etc/sysctl.conf value for key \'kernel.shmmax\' has value \'5000000000\' and expects \'500000000\'
20150314:20:07:35:017843 gpcheck:gp_test1:gpadmin-[ERROR]:-GPCHECK_ERROR host(gp_test3): /etc/sysctl.conf value for key \'kernel.sem\' has value \'250 5120000 100 20480\' and expects \'250 512000 100 2048\'
20150314:20:07:35:017843 gpcheck:gp_test1:gpadmin-[ERROR]:-GPCHECK_ERROR host(gp_test3): /etc/sysctl.conf value for key \'kernel.shmall\' has value \'40000000000\' and expects \'4000000000\'
20150314:20:07:35:017843 gpcheck:gp_test1:gpadmin-[ERROR]:-GPCHECK_ERROR host(gp_test3): potential NTPD issue.  gpcheck start time (Sat Mar 14 20:07:34 2015) time on machine (Sat Mar 14 20:07:14 2015)
20150314:20:07:35:017843 gpcheck:gp_test1:gpadmin-[INFO]:-gpcheck completing...
[gpadmin@gp_test1 ~]$

四、检查硬件性能

1、检查网络性能

网络测试选项包括：并行测试(-r N)、串行测试(-r n)、矩阵测试(-r M)。测试时运行一个网络测试程序从当前主机向远程主机传输5秒钟的数据流。缺省时，数据并行传输到每个远程主机，报告出传输的最小、最大、平均和中值速率，单位为MB/S。如果主体的传输速率低于预期(小于100MB/S)，可以使用-r n参数运行串行的网络测试以得到每个主机的结果。要运行矩阵测试，指定-r M参数，使得每个主机发送接收指定的所有其他主机的数据，这个测试可以验证网络层能否承受全矩阵工作负载。

[gpadmin@gp_test1 gp_files]$ gpcheckperf -f hostfile_exkeys -r N -d /tmp > subnet1.out

[gpadmin@gp_test1 gp_files]$ vi subnet1.out

/opt/greenplum//bin/gpcheckperf -f hostfile_exkeys -r N -d /tmp

-------------------

-- NETPERF TEST

-------------------

====================

== RESULT

====================

Netperf bisection bandwidth test

mdw1 -> smdw1 = 366.560000

sdw1 -> sdw2 = 362.050000

smdw1 -> mdw1 = 363.960000

sdw2 -> sdw1 = 366.690000

Summary:

sum = 1459.26 MB/sec

min = 362.05 MB/sec

max = 366.69 MB/sec

avg = 364.81 MB/sec

median = 366.56 MB/sec

2、检查磁盘IO、内存带宽

[gpadmin@gp_test1 gp_files]$ gpcheckperf -f hostfile_segonly -d /data/mirror -r ds

/opt/greenplum//bin/gpcheckperf -f hostfile_segonly -d /data/mirror -r ds

--------------------

-- DISK WRITE TEST

--------------------

-- DISK READ TEST

--------------------

-- STREAM TEST

--------------------

====================

== RESULT

====================

disk write avg time (sec): 752.24

disk write tot bytes: 4216225792

disk write tot bandwidth (MB/s): 5.46

disk write min bandwidth (MB/s): 0.00 [sdw2]

disk write max bandwidth (MB/s): 5.46 [sdw1]

disk read avg time (sec): 105.09

disk read tot bytes: 8432451584

disk read tot bandwidth (MB/s): 76.53

disk read min bandwidth (MB/s): 37.94 [sdw2]

disk read max bandwidth (MB/s): 38.59 [sdw1]

stream tot bandwidth (MB/s): 7486.56

stream min bandwidth (MB/s): 3707.16 [sdw2]

stream max bandwidth (MB/s): 3779.40 [sdw1]

看到这里是不是觉得我的4台主机配置很渣？

咳咳，确实是的，这4台其实是同一台主机，用vmware esx虚拟出来的。

五、初始化GreenPlum

1、确认前面的步骤已完成

2、创建只包含segment主机地址的host，如果有多网口，需要全部都列出来

3、配置文件，可以参考cp $GPHOME/docs/cli_help/gpconfigs/gpinitsystem_config /dba_files/gp_files

4、注意：可以在初始化时值配置Primary Segment Instance，而在之后使用gpaddmirrors命令部署Mirror Segment Instance

修改如下：

    # FILE NAME: gpinitsystem_config
    # Configuration file needed by the gpinitsystem
    ################################################
    #### REQUIRED PARAMETERS
    ################################################
    #### Name of this Greenplum system enclosed in quotes. 数据库的代号
    ARRAY_NAME="Greenplum DW4P 2M2S(2m2p)"
    #### Naming convention for utility-generated data directories. Segment的名称前缀
    SEG_PREFIX=gpseg
    #### Base number by which primary segment port numbers 起始的端口号
    #### 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).
    #### 指定Primary Segment的数据目录, DATA_DIRECTORY参数指定每个Segment主机配置多少个Instance。如果
    #### 在host文件中为每个Segment主机列出了多个网口，这些Instance将平均分布到所有列出的网口上。
    #### 这里的案例，hosts里有2个segment，sdw1，sdw2俩主机，都是单网卡
    declare -a DATA_DIRECTORY=(/data1/primary /data1/primary)
    #### OS-configured hostname or IP address of the master host.
    #### Master所在机器的Hostname
    MASTER_HOSTNAME=mdw1
    #### File system location where the master data directory
    #### will be created.
    #### 指定Master的数据目录
    MASTER_DIRECTORY=/data/master
    #### Port number for the master instance.
    #### Master的端口
    MASTER_PORT=5432
    #### Shell utility used to connect to remote hosts.
    #### bash的版本
    TRUSTED_SHELL=ssh
    #### Maximum log file segments between automatic WAL checkpoints.
    #### CHECK_POINT_SEGMENT
    #### 设置的是检查点段的大小，较大的检查点段可以改善大数据量装载的性能，同时会加长灾难事务恢复的时间。更多信息可参考相关文档。缺省值为8，
    #### 若为保守起见，建议配置为缺省值，本次测试环境为单台IBM3650M3，呃，可能要改叫联想3650了。
    #### 如果多台服务器级的主机，有足够的内存>16G >16核，那么可以考虑设置为CHECK_POINT_SEGMENTS=256
    CHECK_POINT_SEGMENTS=8
    #### Default server-side character set encoding.
    #### 字符集
    ENCODING=UNICODE
    ################################################
    #### OPTIONAL MIRROR PARAMETERS
    ################################################
    #### Base number by which mirror segment port numbers
    #### are calculated.
    #### Mirror Segment起始的端口号
    #MIRROR_PORT_BASE=50000
    #### Base number by which primary file replication port
    #### numbers are calculated.
    #### Primary Segment主备同步的起始端口号
    #REPLICATION_PORT_BASE=41000
    #### Base number by which mirror file replication port
    #### numbers are calculated.
    #### Mirror Segment主备同步的起始端口号
    #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.
    #### Mirror Segment的数据目录
    #declare -a MIRROR_DATA_DIRECTORY=(/data1/mirror /data1/mirror /data1/mirror /data2/mirror /data2/mirror /data2/mirror)
    ################################################
    #### OTHER OPTIONAL PARAMETERS
    ################################################
    #### Create a database of this name after initialization.
    #DATABASE_NAME=name_of_database
    #### Specify the location of the host address file here instead of
    #### with the the -h option of gpinitsystem.
    #MACHINE_LIST_FILE=/home/gpadmin/gpconfigs/hostfile_gpinitsystem

接着我们开始初始化GP集群了。

[gpadmin@gp_test1 gp_files]$ gpinitsystem -c gpinitsystem_config -h hostfile_segonly -s smdw1 -S

20150317:11:49:33:026105 gpinitsystem:gp_test1:gpadmin-[INFO]:-Checking configuration parameters, please wait...

/bin/mv：是否覆盖 “gpinitsystem_config”，而不理会权限模式 0444？yes

20150317:11:49:43:026105 gpinitsystem:gp_test1:gpadmin-[INFO]:-Reading Greenplum configuration file gpinitsystem_config

20150317:11:49:43:026105 gpinitsystem:gp_test1:gpadmin-[INFO]:-Locale has not been set in gpinitsystem_config, will set to default value

20150317:11:49:43:026105 gpinitsystem:gp_test1:gpadmin-[INFO]:-Locale set to en_US.utf8

20150317:11:49:43:026105 gpinitsystem:gp_test1:gpadmin-[WARN]:-Master hostname mdw1 does not match hostname output

20150317:11:49:43:026105 gpinitsystem:gp_test1:gpadmin-[INFO]:-Checking to see if mdw1 can be resolved on this host

20150317:11:49:43:026105 gpinitsystem:gp_test1:gpadmin-[INFO]:-Can resolve mdw1 to this host

20150317:11:49:43:026105 gpinitsystem:gp_test1:gpadmin-[INFO]:-No DATABASE_NAME set, will exit following template1 updates

20150317:11:49:43:026105 gpinitsystem:gp_test1:gpadmin-[INFO]:-MASTER_MAX_CONNECT not set, will set to default value 250

20150317:11:49:44:026105 gpinitsystem:gp_test1:gpadmin-[INFO]:-Checking configuration parameters, Completed

20150317:11:49:44:026105 gpinitsystem:gp_test1:gpadmin-[INFO]:-Commencing multi-home checks, please wait...

20150317:11:49:44:026105 gpinitsystem:gp_test1:gpadmin-[INFO]:-Configuring build for standard array

20150317:11:49:44:026105 gpinitsystem:gp_test1:gpadmin-[WARN]:-Option -S supplied, but no mirrors have been defined, ignoring -S option

20150317:11:49:44:026105 gpinitsystem:gp_test1:gpadmin-[INFO]:-Commencing multi-home checks, Completed

20150317:11:49:44:026105 gpinitsystem:gp_test1:gpadmin-[INFO]:-Building primary segment instance array, please wait...

....

20150317:11:49:46:026105 gpinitsystem:gp_test1:gpadmin-[INFO]:-Checking Master host

20150317:11:49:47:026105 gpinitsystem:gp_test1:gpadmin-[INFO]:-Checking new segment hosts, please wait...

./bin/touch: 无法触碰 “/data1/primary/tmp_file_test”: 没有那个文件或目录

20150317:11:49:49:gpinitsystem:gp_test1:gpadmin-[FATAL]:-Cannot write to /data1/primary on sdw1 Script Exiting!

咳咳，出师不利。/data/primary写错了，写成了/data1，所以提示没有那个文件或目录

这个时候需要注意的是，看下是否有如下的撤销脚本，/home/gpadmin/gpAdminLogs/backout_gpinitsystem_<user>_<timestamp> ，因为gpinitsystem失败会

有可能带来一个不完整的系统，可以用此脚本清理掉不完整的系统，该撤销脚本将会删除其创建的数据目录、postgres进程以及日志文件。

执行了撤销脚本，并在解决导致gpinitsystem失败的原因之后，可以重新尝试初始化GPDB集群。

在这里并没有生成撤销脚本，所以我修正gpinitsystem_config 配置档后继续执行

gpinitsystem -c gpinitsystem_config -h hostfile_segonly -s smdw1 -S

[gpadmin@gp_test1 gp_files]$ gpinitsystem -c gpinitsystem_config -h hostfile_segonly -s smdw1 -S

20150317:15:28:50:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Checking configuration parameters, please wait...
20150317:15:28:50:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-ReadingGreenplum configuration file gpinitsystem_config
20150317:15:28:50:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Locale has not been setin gpinitsystem_config, will set to default value
20150317:15:28:50:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Localeset to en_US.utf8
20150317:15:28:50:030282 gpinitsystem:gp_test1:gpadmin-[WARN]:-Master hostname mdw1 does not match hostname output
20150317:15:28:50:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Checking to see if mdw1 can be resolved on this host
20150317:15:28:50:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Can resolve mdw1 to this host
20150317:15:28:50:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-No DATABASE_NAME set, will exit following template1 updates
20150317:15:28:50:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-MASTER_MAX_CONNECT not set, will set to default value 250
20150317:15:28:51:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Checking configuration parameters,Completed
20150317:15:28:51:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Commencing multi-home checks, please wait...
..
20150317:15:28:51:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Configuring build for standard array
20150317:15:28:51:030282 gpinitsystem:gp_test1:gpadmin-[WARN]:-Option-S supplied, but no mirrors have been defined, ignoring -S option
20150317:15:28:51:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Commencing multi-home checks,Completed
20150317:15:28:51:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Building primary segment instance array, please wait...
....
20150317:15:28:53:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-CheckingMaster host
20150317:15:28:53:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Checking new segment hosts, please wait...
....
20150317:15:28:58:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Checking new segment hosts,Completed
20150317:15:28:58:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-GreenplumDatabaseCreationParameters
20150317:15:28:58:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:---------------------------------------
20150317:15:28:58:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-MasterConfiguration
20150317:15:28:58:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:---------------------------------------
20150317:15:28:58:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Master instance name =Greenplum DW4P 2M2S(2m2p)
20150317:15:28:58:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Master hostname = mdw1
20150317:15:28:58:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Master port =5432
20150317:15:28:58:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Master instance dir =/data/master/gpseg-1
20150317:15:28:58:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Master LOCALE = en_US.utf8
20150317:15:28:58:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Greenplum segment prefix = gpseg
20150317:15:28:58:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-MasterDatabase=
20150317:15:28:58:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Master connections =250
20150317:15:28:58:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Master buffers =128000kB
20150317:15:28:58:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Segment connections =750
20150317:15:28:58:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Segment buffers =128000kB
20150317:15:28:58:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Checkpoint segments =8
20150317:15:28:58:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Encoding= UNICODE
20150317:15:28:58:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Postgres param file =Off
20150317:15:28:58:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Initdb to be used =/opt/greenplum/bin/initdb
20150317:15:28:58:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-GP_LIBRARY_PATH is =/opt/greenplum/lib
20150317:15:28:58:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Ulimit check =Passed
20150317:15:28:58:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Array host connect type =Single hostname per node
20150317:15:28:58:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Master IP address [1]=10.27.1.206
20150317:15:28:58:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-StandbyMaster= smdw1
20150317:15:28:59:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Primary segment # = 2
20150317:15:28:59:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Standby IP address =10.27.1.207
20150317:15:28:59:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-TotalDatabase segments =4
20150317:15:28:59:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Trusted shell = ssh
20150317:15:28:59:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Number segment hosts =2
20150317:15:28:59:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Mirroring config = OFF
20150317:15:28:59:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:----------------------------------------
20150317:15:28:59:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-GreenplumPrimarySegmentConfiguration
20150317:15:28:59:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:----------------------------------------
20150317:15:28:59:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-sdw1 /data/primary/gpseg0 4000020
20150317:15:28:59:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-sdw1 /data/primary/gpseg1 4000131
20150317:15:28:59:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-sdw2 /data/primary/gpseg2 4000042
20150317:15:28:59:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-sdw2 /data/primary/gpseg3 4000153
Continue with Greenplum creation Yy/Nn>
y
20150317:15:29:24:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Building the Master instance database, please wait...
20150317:15:30:20:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Starting the Masterin admin mode
20150317:15:30:26:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Commencing parallel build of primary segment instances
20150317:15:30:26:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Spawning parallel processes batch [1], please wait...
....
20150317:15:30:27:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Waitingfor parallel processes batch [1], please wait...
.................................................................................................................
20150317:15:32:21:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:------------------------------------------------
20150317:15:32:21:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Parallel process exit status
20150317:15:32:21:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:------------------------------------------------
20150317:15:32:21:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Total processes marked as completed =4
20150317:15:32:21:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Total processes marked as killed =0
20150317:15:32:21:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Total processes marked as failed =0
20150317:15:32:21:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:------------------------------------------------
20150317:15:32:21:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Deleting distributed backout files
20150317:15:32:21:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Removing back out file
20150317:15:32:21:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-No errors generated from parallel processes
20150317:15:32:21:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Starting initialization of standby master smdw1
20150317:15:32:22:013395 gpinitstandby:gp_test1:gpadmin-[INFO]:-Validating environment and parameters for standby initialization...
20150317:15:32:22:013395 gpinitstandby:gp_test1:gpadmin-[INFO]:-Checkingfor filespace directory /data/master/gpseg-1 on smdw1
20150317:15:32:22:013395 gpinitstandby:gp_test1:gpadmin-[INFO]:------------------------------------------------------
20150317:15:32:22:013395 gpinitstandby:gp_test1:gpadmin-[INFO]:-Greenplum standby master initialization parameters
20150317:15:32:22:013395 gpinitstandby:gp_test1:gpadmin-[INFO]:------------------------------------------------------
20150317:15:32:22:013395 gpinitstandby:gp_test1:gpadmin-[INFO]:-Greenplum master hostname = gp_test1
20150317:15:32:22:013395 gpinitstandby:gp_test1:gpadmin-[INFO]:-Greenplum master data directory =/data/master/gpseg-1
20150317:15:32:22:013395 gpinitstandby:gp_test1:gpadmin-[INFO]:-Greenplum master port =5432
20150317:15:32:22:013395 gpinitstandby:gp_test1:gpadmin-[INFO]:-Greenplum standby master hostname = smdw1
20150317:15:32:22:013395 gpinitstandby:gp_test1:gpadmin-[INFO]:-Greenplum standby master port =5432
20150317:15:32:22:013395 gpinitstandby:gp_test1:gpadmin-[INFO]:-Greenplum standby master data directory =/data/master/gpseg-1
20150317:15:32:22:013395 gpinitstandby:gp_test1:gpadmin-[INFO]:-Greenplum update system catalog =On
20150317:15:32:22:013395 gpinitstandby:gp_test1:gpadmin-[INFO]:------------------------------------------------------
20150317:15:32:22:013395 gpinitstandby:gp_test1:gpadmin-[INFO]:-Filespace locations
20150317:15:32:22:013395 gpinitstandby:gp_test1:gpadmin-[INFO]:------------------------------------------------------
20150317:15:32:22:013395 gpinitstandby:gp_test1:gpadmin-[INFO]:-pg_system ->/data/master/gpseg-1
20150317:15:32:22:013395 gpinitstandby:gp_test1:gpadmin-[INFO]:-SyncingGreenplumDatabase extensions to standby
20150317:15:32:23:013395 gpinitstandby:gp_test1:gpadmin-[INFO]:-The packages on smdw1 are consistent.
20150317:15:32:23:013395 gpinitstandby:gp_test1:gpadmin-[INFO]:-Updating pg_hba.conf file...
20150317:15:32:23:013395 gpinitstandby:gp_test1:gpadmin-[INFO]:-Updating pg_hba.conf file on segments...
20150317:15:32:30:013395 gpinitstandby:gp_test1:gpadmin-[INFO]:-Adding standby master to catalog...
20150317:15:32:30:013395 gpinitstandby:gp_test1:gpadmin-[INFO]:-Database catalog updated successfully.
20150317:15:32:41:013395 gpinitstandby:gp_test1:gpadmin-[INFO]:-Updating filespace flat files
20150317:15:32:41:013395 gpinitstandby:gp_test1:gpadmin-[INFO]:-Updating filespace flat files
20150317:15:32:41:013395 gpinitstandby:gp_test1:gpadmin-[INFO]:-Removing pg_hba.conf backup...
20150317:15:32:41:013395 gpinitstandby:gp_test1:gpadmin-[INFO]:-Starting standby master
20150317:15:32:41:013395 gpinitstandby:gp_test1:gpadmin-[INFO]:-Checkingif standby master is running on host: smdw1 in directory:/data/master/gpseg-1
20150317:15:33:25:013395 gpinitstandby:gp_test1:gpadmin-[INFO]:-Successfully created standby master on smdw1
20150317:15:33:25:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Successfully completed standby master initialization
20150317:15:33:33:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Restarting the Greenplum instance in production mode
20150317:15:33:33:013771 gpstop:gp_test1:gpadmin-[INFO]:-Starting gpstop with args:-a -i -m -d /data/master/gpseg-1
20150317:15:33:33:013771 gpstop:gp_test1:gpadmin-[INFO]:-Gathering information and validating the environment...
20150317:15:33:33:013771 gpstop:gp_test1:gpadmin-[INFO]:-ObtainingGreenplumMaster catalog information
20150317:15:33:33:013771 gpstop:gp_test1:gpadmin-[INFO]:-ObtainingSegment details from master...
20150317:15:33:34:013771 gpstop:gp_test1:gpadmin-[INFO]:-GreenplumVersion:\'postgres (Greenplum Database) 4.3.4.1 build 2\'
20150317:15:33:34:013771 gpstop:gp_test1:gpadmin-[INFO]:-There are 0 connections to the database
20150317:15:33:34:013771 gpstop:gp_test1:gpadmin-[INFO]:-CommencingMaster instance shutdown with mode=\'immediate\'
20150317:15:33:34:013771 gpstop:gp_test1:gpadmin-[INFO]:-Master host=gp_test1
20150317:15:33:34:013771 gpstop:gp_test1:gpadmin-[INFO]:-CommencingMaster instance shutdown with mode=immediate
20150317:15:33:34:013771 gpstop:gp_test1:gpadmin-[INFO]:-Master segment instance directory=/data/master/gpseg-1
20150317:15:33:35:013771 gpstop:gp_test1:gpadmin-[INFO]:-Attempting forceful termination of any leftover master process
20150317:15:33:35:013771 gpstop:gp_test1:gpadmin-[INFO]:-Terminating processes for segment /data/master/gpseg-1
20150317:15:33:35:013771 gpstop:gp_test1:gpadmin-[ERROR]:-Failed to kill processes for segment /data/master/gpseg-1:([Errno3]No such process)
20150317:15:33:35:013858 gpstart:gp_test1:gpadmin-[INFO]:-Starting gpstart with args:-a -d /data/master/gpseg-1
20150317:15:33:35:013858 gpstart:gp_test1:gpadmin-[INFO]:-Gathering information and validating the environment...
20150317:15:33:35:013858 gpstart:gp_test1:gpadmin-[INFO]:-GreenplumBinaryVersion:\'postgres (Greenplum Database) 4.3.4.1 build 2\'
20150317:15:33:35:013858 gpstart:gp_test1:gpadmin-[INFO]:-GreenplumCatalogVersion:\'201310150\'
20150317:15:33:35:013858 gpstart:gp_test1:gpadmin-[INFO]:-StartingMaster instance in admin mode
20150317:15:33:36:013858 gpstart:gp_test1:gpadmin-[INFO]:-ObtainingGreenplumMaster catalog information
20150317:15:33:36:013858 gpstart:gp_test1:gpadmin-[INFO]:-ObtainingSegment details from master...
20150317:15:33:36:013858 gpstart:gp_test1:gpadmin-[INFO]:-Setting new master era
20150317:15:33:36:013858 gpstart:gp_test1:gpadmin-[INFO]:-MasterStarted...
20150317:15:33:38:013858 gpstart:gp_test1:gpadmin-[INFO]:-Shutting down master
20150317:15:33:40:013858 gpstart:gp_test1:gpadmin-[INFO]:-Commencing parallel segment instance startup, please wait...
...
20150317:15:33:43:013858 gpstart:gp_test1:gpadmin-[INFO]:-Process results...
20150317:15:33:43:013858 gpstart:gp_test1:gpadmin-[INFO]:-----------------------------------------------------
20150317:15:33:43:013858 gpstart:gp_test1:gpadmin-[INFO]:-Successful segment starts =4
20150317:15:33:43:013858 gpstart:gp_test1:gpadmin-[INFO]:-Failed segment starts =0
20150317:15:33:43:013858 gpstart:gp_test1:gpadmin-[INFO]:-Skipped segment starts (segments are marked down in configuration)=0
20150317:15:33:43:013858 gpstart:gp_test1:gpadmin-[INFO]:-----------------------------------------------------
20150317:15:33:43:013858 gpstart:gp_test1:gpadmin-[INFO]:-
20150317:15:33:43:013858 gpstart:gp_test1:gpadmin-[INFO]:-Successfully started 4 of 4 segment instances
20150317:15:33:43:013858 gpstart:gp_test1:gpadmin-[INFO]:-----------------------------------------------------
20150317:15:33:43:013858 gpstart:gp_test1:gpadmin-[INFO]:-StartingMaster instance gp_test1 directory /data/master/gpseg-1
20150317:15:33:47:013858 gpstart:gp_test1:gpadmin-[INFO]:-Command pg_ctl reports Master gp_test1 instance active
20150317:15:33:47:013858 gpstart:gp_test1:gpadmin-[INFO]:-Starting standby master
20150317:15:33:47:013858 gpstart:gp_test1:gpadmin-[INFO]:-Checkingif standby master is running on host: smdw1 in directory:/data/master/gpseg-1
20150317:15:34:00:013858 gpstart:gp_test1:gpadmin-[INFO]:-Database successfully started
20150317:15:34:00:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Completed restart of Greenplum instance in production mode
20150317:15:34:00:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Loading gp_toolkit...
20150317:15:34:05:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Scanning utility log file for any warning messages
20150317:15:34:05:030282 gpinitsystem:gp_test1:gpadmin-[WARN]:-*******************************************************
20150317:15:34:05:030282 gpinitsystem:gp_test1:gpadmin-[WARN]:-Scan of log file indicates that some warnings or errors
20150317:15:34:05:030282 gpinitsystem:gp_test1:gpadmin-[WARN]:-were generated during the array creation
20150317:15:34:05:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Please review contents of log file
20150317:15:34:05:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-/home/gpadmin/gpAdminLogs/gpinitsystem_20150317.log
20150317:15:34:05:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-To determine level of criticality
20150317:15:34:05:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-These messages could be from a previous run of the utility
20150317:15:34:05:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-that was called today!
20150317:15:34:05:030282 gpinitsystem:gp_test1:gpadmin-[WARN]:-*******************************************************
20150317:15:34:05:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-GreenplumDatabase instance successfully created
20150317:15:34:05:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-------------------------------------------------------
20150317:15:34:05:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-To complete the environment configuration, please
20150317:15:34:05:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-update gpadmin .bashrc file with the following
20150317:15:34:05:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-1.Ensure that the greenplum_path.sh file is sourced
20150317:15:34:05:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-2.Add"export MASTER_DATA_DIRECTORY=/data/master/gpseg-1"
20150317:15:34:05:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:- to access the Greenplum scripts for this instance:
20150317:15:34:05:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:- or, use -d /data/master/gpseg-1 option for the Greenplum scripts
20150317:15:34:05:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Example gpstate -d /data/master/gpseg-1
20150317:15:34:05:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Script log file =/home/gpadmin/gpAdminLogs/gpinitsystem_20150317.log
20150317:15:34:05:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-To remove instance, run gpdeletesystem utility
20150317:15:34:05:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-StandbyMaster smdw1 has been configured
20150317:15:34:05:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-To activate the StandbyMasterSegmentin the event of Master
20150317:15:34:05:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-failure review options for gpactivatestandby
20150317:15:34:05:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-------------------------------------------------------
20150317:15:34:05:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-TheMaster/data/master/gpseg-1/pg_hba.conf post gpinitsystem
20150317:15:34:05:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-has been configured to allow all hosts within this new
20150317:15:34:05:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-array to intercommunicate.Any hosts external to this
20150317:15:34:05:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-new array must be explicitly added to this file
20150317:15:34:05:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-Refer to the GreenplumAdmin support guide which is
20150317:15:34:05:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-located in the /opt/greenplum//docs directory
20150317:15:34:05:030282 gpinitsystem:gp_test1:gpadmin-[INFO]:-------------------------------------------------------

psql -d postgres 登录默认postgres数据库看看~

[gpadmin@gp_test1 /]$ psql -d postgres
psql (8.2.15)
Type"help"for help.
postgres=#
postgres=#
postgres=# help
You are using psql, the command-line interface to PostgreSQL.
Type: \\copyright for distribution terms
\\h for help with SQL commands
\\? for help 以上是关于『GreenPlum系列』GreenPlum 4节点集群安装（图文教程）的主要内容，如果未能解决你的问题，请参考以下文章 Greenplum迁移指南 Greeplum 系列 Greenplum 架构 greenplum 集群新增 standby节点 Greeplum 系列安装部署 greenplum的升级与连接池pgbouncer Greenplum 实时数据仓库实践——Greenplum安装部署