安装Greenplum-perfmon-web监控软件遇到的问题及解决

环境

Product	Version
Pivotal Greenplum (GPDB)	4.3.x
Pivotal Greenplum Command Center (GPCC)
Others

预备 使用自带的工具命令

gpperfmon_install
[--enable --password <gpmon_password> --port <gpdb_port>]
[--pgpass <path_to_file>]
[--verbose]

功能大致是：
    创建greenplum监控用数据库(gpperfmon)
    创建greenplum监控用数据库角色(gpmon)
    配置greenplum数据库接受来自perfmon监控的链接文件(pg_hba.conf和.pgpass)
    设置postgresql.conf文件，增加启用监控的参数。（这些参数默认会添加在文件的末尾）
    设置pg_hba.conf文件，增加如下信息：  
    local    gpperfmon         gpmon         md5
    host     all               gpmon         127.0.0.1/28    md5

重启数据库

gpstop -r

解压并安装

unzip greenplum-db-4.3.11.3-rhel5-x86_64.zip

/greenplum-cc-web-3.0.2-LINUX-x86_64.bin

source /usr/local/greenplum-cc-web/gpcc_path.sh

设置web实例

gpcmdr --setup

启动实例

gpcmdr --start

问题1

During the new installation of Greenplum Command Center (GPCC), an error was encountered:

[gpadmin@mdw gpseg-1]$ gpcmdr --setup

An instance name is used by the Greenplum Command Center as
a way to uniquely identify a Greenplum Database that has the monitoring
components installed and configured. This name is also used to control
specific instances of the Greenplum Command Center web UI. Instance names
can contain letters, digits and underscores and are not case sensitive.

Please enter a new instance name:
> gpcc 
The web component of the Greenplum Command Center can connect to a
monitor database on a remote Greenplum Database.


Is the master host for the Greenplum Database remote? Yy|Nn (default=N):
> n
The display name is shown in the web interface and does not need to be
a hostname.

What would you like to use for the display name for this instance:
> gpcc
What port does the Greenplum Database use? (default=5432):
> 
Creating instance schema in GPDB. Please wait ...
Failed to setup Command Center instance gpcc: Exception encountered while fetching GPDB version info Connection error for query select version();: FATAL: no pg_hba.conf entry for host "::1", user "gpmon", database "gpperfmon", SSL off

[gpadmin@mdw gpseg-1]$

解决

Add the below line to the pg_hba.conf file:

host    gpperfmon       gpmon   ::1/128 trust

Once the line is added, issue a gpstop -u for the changes to take effect immediately without DB restart.

Now retry the command center setup and it should now succeed.

gpstop -u （重新加载配置）

问题2 登录界面失败

解决

host    gpperfmon       gpmon   :::/0 trust

gpstop -u （重新加载配置）

注意事项 ： 修改配置后使用 -u 参数进行重新加载配置，不能重新启动，否者gp启动失败。卡在启动界面中。

原因是在 pg_hba.conf 中添加了

host    gpperfmon       gpmon   :::/0 trust

问题3

扩展节点后监控对新节点没有跟进

解决方案都是临时，具体原因待调查