安装Greenplum-cc-web监控软件

安装Greenplum-cc-web监控软件

                                                   -----written by jiangshouzhuang

安装前准备

操作系统信息:

SUSE Linux Enterprise Server 11 (x86_64)

VERSION = 11

PATCHLEVEL = 1

 

软件包(如果需要此包，请联系我)：

greenplum-cc-web-1.2.2.1-x86_64.tar.gz

 

安装节点(所有节点都提前部署好了greenplum-db-4.3.0.0数据库，并且数据库启动正常并可访问)：

我安装的环境如下：

10.41.24.101     linux113       --------Greenplum Segment

10.41.24.102     linux116       --------Greenplum Primary Master

10.41.24.103     NOAS252     --------Greenplum Standby Master

 

安装GP监控的数据库和用户等信息

执行Greenplum DB数据库的gpperfmon_install工具,完成GP监控软件安装的前期准备工作

gpperfmon_install工具的功能大致是：

    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）

 

下面在GreenplumMaster节点操作：

   

   1) 使用gpadmin用户登录

    linux116:~# su - gpadmin

   

   2) 执行 gpperfmon_install 命令

   gpadmin@linux116:~> gpperfmon_install--enable --password huawei123 --port 5432

   20140519:16:15:07:026251gpperfmon_install:linux116:gpadmin-[INFO]:-PGPORT=5432 psql -f/usr/local/greenplum-db/lib/gpperfmon/gpperfmon3.sql template1 >&/dev/null

   20140519:16:15:28:026251 gpperfmon_install:linux116:gpadmin-[INFO]:-PGPORT=5432psql -f /usr/local/greenplum-db/lib/gpperfmon/gpperfmon4.sql gpperfmon>& /dev/null

   20140519:16:15:29:026251gpperfmon_install:linux116:gpadmin-[INFO]:-PGPORT=5432 psql -f/usr/local/greenplum-db/lib/gpperfmon/gpperfmon41.sql gpperfmon >&/dev/null

   20140519:16:15:33:026251gpperfmon_install:linux116:gpadmin-[INFO]:-PGPORT=5432 psql -f/usr/local/greenplum-db/lib/gpperfmon/gpperfmon42.sql gpperfmon >&/dev/null

   20140519:16:15:36:026251 gpperfmon_install:linux116:gpadmin-[INFO]:-PGPORT=5432psql -f /usr/local/greenplum-db/lib/gpperfmon/gpperfmonC.sql template1>& /dev/null

   20140519:16:15:36:026251gpperfmon_install:linux116:gpadmin-[INFO]:-PGPORT=5432 psql template1 -c"DROP ROLE IF EXISTS gpmon" >& /dev/null

   20140519:16:15:36:026251gpperfmon_install:linux116:gpadmin-[INFO]:-PGPORT=5432 psql template1 -c"CREATE ROLE gpmon WITH SUPERUSER CREATEDB LOGIN ENCRYPTED PASSWORD'huawei123'"  >& /dev/null

   20140519:16:15:37:026251 gpperfmon_install:linux116:gpadmin-[INFO]:-echo"local    gpperfmon         gpmon         md5" >>/data/master/gpseg-1/pg_hba.conf

   20140519:16:15:37:026251 gpperfmon_install:linux116:gpadmin-[INFO]:-echo"host     all         gpmon         127.0.0.1/28    md5" >>/data/master/gpseg-1/pg_hba.conf

    20140519:16:15:37:026251gpperfmon_install:linux116:gpadmin-[INFO]:-touch /home/gpadmin/.pgpass>& /dev/null

   20140519:16:15:37:026251 gpperfmon_install:linux116:gpadmin-[INFO]:-mv-f /home/gpadmin/.pgpass /home/gpadmin/.pgpass.1400487307 >& /dev/null

   20140519:16:15:37:026251 gpperfmon_install:linux116:gpadmin-[INFO]:-echo"*:5432:gpperfmon:gpmon:huawei123" >> /home/gpadmin/.pgpass

   20140519:16:15:37:026251 gpperfmon_install:linux116:gpadmin-[INFO]:-cat/home/gpadmin/.pgpass.1400487307 >> /home/gpadmin/.pgpass

   20140519:16:15:37:026251gpperfmon_install:linux116:gpadmin-[INFO]:-chmod 0600 /home/gpadmin/.pgpass>& /dev/null

   20140519:16:15:37:026251gpperfmon_install:linux116:gpadmin-[INFO]:-PGPORT=5432 gpconfig -cgp_enable_gpperfmon -v on >& /dev/null

   20140519:16:15:43:026251gpperfmon_install:linux116:gpadmin-[INFO]:-PGPORT=5432 gpconfig -cgpperfmon_port -v 8888 >& /dev/null

   20140519:16:15:49:026251gpperfmon_install:linux116:gpadmin-[INFO]:-PGPORT=5432 gpconfig -cgp_external_enable_exec -v on --masteronly >& /dev/null

   20140519:16:15:55:026251gpperfmon_install:linux116:gpadmin-[INFO]:-gpperfmon will be enabled after afull restart of GPDB

 

    注：可以看到命令执行后，会创建gpmon角色，以及设置了密码，这个用户可以登录到数据库里面，也可用于登录页面。

   

   3) 重启greenplum 数据库

   gpadmin@linux116:~> gpstop -r

   

   4) 查看gpmon进程，是否已经启用

   gpadmin@linux116:~> ps -ef | grep gpmmon |grep -v grep

   gpadmin  27036 27027  0 16:18 ?        00:00:00/usr/local/greenplum-db/bin/gpmmon -D /data/master/gpseg-1/gpperfmon/conf/gpperfmon.conf-p 5432

 

   5) 查看数据收集进程是否正常(需要等大约30s左右才可以查看到)

   gpadmin@linux116:~> psql gpperfmon -c 'SELECT* FROM system_now;'

   ctime        | hostname |  mem_total |  mem_used   | mem_actual_used | mem_actual_free |swap_total  | swap_used | swap_page_in |swap_page_out | cpu_user | cpu_sys | cpu

   _idle | load0 | load1 | load2 | quantum | disk_ro_rate | disk_wo_rate |disk_rb_rate | disk_wb_rate | net_rp_rate | net_wp_rate | net_rb_rate |net_wb_rate

   ---------------------+----------+-------------+-------------+-----------------+-----------------+-------------+-----------+--------------+---------------+----------+---------+----

   ------+-------+-------+-------+---------+--------------+--------------+--------------+--------------+-------------+-------------+-------------+-------------

    2014-05-19 16:21:30 | linux113| 25202618368 | 21777362944 |     7865163776 |     17337454592|  2154979328 |  23846912 |            0 |             0 |     1.68 |   1.89 |   

   96.18 |  0.07 |  0.08 | 0.09 |      15 |            0 |           13 |            0 |       135518 |          13 |          15 |        1776 |        2110

    2014-05-19 16:21:30 | linux116| 25202618368 | 17788657664 |     2744700928 |     22457917440|  2154979328 |  22982656 |            0 |             0 |     0.71 |   0.22 |   

   98.56 |   0.1 |  0.16 | 0.06 |      15 |            0 |            7 |            0 |        84269 |          51 |          54 |       11435 |       32212

    2014-05-19 16:21:30 | NOAS252  | 50609725440 | 40639737856 |      9263038464 |     41346686976 | 25777983488 |         0 |            0 |             0 |     1.61 |   1.84 |   

   96.32 |  0.39 |  0.42 | 0.36 |      15 |            0 |           46 |            0 |       454920 |          80 |          75 |      204981 |      183732

   (3 rows)

   

下面配置GreenplumStandby Master节点：

    在primarymaster上面执行：

   1) 将primary master上面的$MASTER_DATA_DIRECTORY/pg_hba.conf拷贝到standby master的$MASTER_DATA_DIRECTORY/pg_hba.conf

   gpadmin@linux116:~> scp $MASTER_DATA_DIRECTORY/pg_hba.confgpadmin@linux113:$MASTER_DATA_DIRECTORY/pg_hba.conf

   

   2) 将primary master上面的~/.pgpass拷贝到standby master的~/.pgpass，并且文件权限修改为0600

   gpadmin@linux116:~> scp ~/.pgpass gpadmin@linux113:~/.pgpass

   gpadmin@linux116:~> ssh gpadmin@linux113 -C "chmod 0600~/.pgpass"

 

   

开始正式安装Greenplum Command Center Console

以下操作都在primarymaster节点操作：

 

1)下载适合自己机器的greenplum-cc-web安装程序

greenplum-cc-web-1.2.2.1-build-71-RHEL5-x86_64.zip

由于官网上面只能下载到RedHat操作系统的，但是我们要求在SuSE操作系统上面安装。

现在的解决办法是：先在RedHat上面安装好之后，将安装目录打包后，再安装到SuSE上，但是配置文件需要根据需要修改(下面会介绍)。

 

 

2) 将获取的GPCC包(greenplum-cc-web-1.2.2.1-x86_64.tar.gz)上传到primarymaster节点的gpadmin用户家目录下面并完成解压操作

linux116:~ # cd /home/gpadmin/

linux116:/home/gpadmin # tar -zxvfgreenplum-cc-web-1.2.2.1-x86_64.tar.gz

linux116:~ # chown -R gpadmin:gpadmingreenplum-cc-web-1.2.2.1-build-71

linux116:~ # chmod -R 755greenplum-cc-web-1.2.2.1-build-71

 

3) 切换到gpadmin用户并建立软链接

linux116:/home/gpadmin # su - gpadmin

gpadmin@linux116:~> ln -s greenplum-cc-web-1.2.2.1-build-71greenplum-cc-web

 

4) 修改/home/gpadmin/greenplum-cc-web/gpcc_path.sh文件，将GPPERFMONHOME配置为GP监控的实际家目录，如下：

GPPERFMONHOME=/home/gpadmin/greenplum-cc-web-1.2.2.1-build-71

 

5) 将"source/home/gpadmin/greenplum-cc-web/gpcc_path.sh"加入到~/.bashrc文件并source使环境变量生效：

  gpadmin@linux116:~> echo "source/home/gpadmin/greenplum-cc-web/gpcc_path.sh" >> ~/.bashrc

  gpadmin@linux116:~> source .bashrc

 

6) 将primary master的GP监控软件同时安装到到其他GP节点(如standbymaster和segments)：

   a. 准备一个文件hostfilename里面包含其他未安装GP监控软件的GPDB数据库的主机名，如下(我的环境只有一个standbymaster和一个segment节点)：

gpadmin@linux116:~>cat hostfilename      

linux113

NOAS252

 

   b.开始执行gpccinstall工具安装到其他节点

   gpadmin@linux116:~> gpccinstall -fhostfilename

   20140519:17:06:41:030995gpccinstall:linux116:gpadmin-[INFO]:-Installation Info:

   link_name greenplum-cc-web

   binary_path /home/gpadmin/greenplum-cc-web-1.2.2.1-build-71

   binary_dir_location /home/gpadmin

   binary_dir_name greenplum-cc-web-1.2.2.1-build-71

   rm -f /home/gpadmin/greenplum-cc-web-1.2.2.1-build-71.tar; rm -f/home/gpadmin/greenplum-cc-web-1.2.2.1-build-71.tar.gz

   cd /home/gpadmin; tar cf greenplum-cc-web-1.2.2.1-build-71.targreenplum-cc-web-1.2.2.1-build-71

   gzip /home/gpadmin/greenplum-cc-web-1.2.2.1-build-71.tar

   20140519:17:06:43:030995gpccinstall:linux116:gpadmin-[INFO]:-runPoolCommand on (linux113): mkdir -p/home/gpadmin

   20140519:17:06:43:030995gpccinstall:linux116:gpadmin-[INFO]:-runPoolCommand on (NOAS252): mkdir -p/home/gpadmin

   20140519:17:06:44:030995gpccinstall:linux116:gpadmin-[INFO]:-runPoolCommand on (linux113): rm -rf/home/gpadmin/greenplum-cc-web-1.2.2.1-build-71

   20140519:17:06:44:030995gpccinstall:linux116:gpadmin-[INFO]:-runPoolCommand on (NOAS252): rm -rf/home/gpadmin/greenplum-cc-web-1.2.2.1-build-71

   20140519:17:06:44:030995 gpccinstall:linux116:gpadmin-[INFO]:-scpsoftware to remote location

   20140519:17:06:45:030995gpccinstall:linux116:gpadmin-[INFO]:-runPoolCommand on (linux113): gzip -f -d/home/gpadmin/greenplum-cc-web-1.2.2.1-build-71.tar.gz

   20140519:17:06:45:030995gpccinstall:linux116:gpadmin-[INFO]:-runPoolCommand on (NOAS252): gzip -f -d/home/gpadmin/greenplum-cc-web-1.2.2.1-build-71.tar.gz

   20140519:17:06:45:030995gpccinstall:linux116:gpadmin-[INFO]:-runPoolCommand on (linux113): cd/home/gpadmin; tar xf greenplum-cc-web-1.2.2.1-build-71.tar

   20140519:17:06:45:030995gpccinstall:linux116:gpadmin-[INFO]:-runPoolCommand on (NOAS252): cd/home/gpadmin; tar xf greenplum-cc-web-1.2.2.1-build-71.tar

   20140519:17:06:46:030995gpccinstall:linux116:gpadmin-[INFO]:-runPoolCommand on (linux113): rm -f/home/gpadmin/greenplum-cc-web-1.2.2.1-build-71.tar

   20140519:17:06:46:030995gpccinstall:linux116:gpadmin-[INFO]:-runPoolCommand on (NOAS252): rm -f/home/gpadmin/greenplum-cc-web-1.2.2.1-build-71.tar

   20140519:17:06:46:030995 gpccinstall:linux116:gpadmin-[INFO]:-runPoolCommandon (linux113): cd /home/gpadmin; rm -f greenplum-cc-web; ln -fsgreenplum-cc-web-1.2.2.1-build-71 greenplum-cc-web

   20140519:17:06:46:030995gpccinstall:linux116:gpadmin-[INFO]:-runPoolCommand on (NOAS252): cd /home/gpadmin;rm -f greenplum-cc-web; ln -fs greenplum-cc-web-1.2.2.1-build-71greenplum-cc-web

   20140519:17:06:46:030995 gpccinstall:linux116:gpadmin-[INFO]:-Verifyinginstalled software versions

   20140519:17:06:46:030995 gpccinstall:linux116:gpadmin-[INFO]:-remotecommand: . /home/gpadmin/greenplum-cc-web/./gpcc_path.sh;/home/gpadmin/greenplum-cc-web/./bin/gpcmdr --version

   20140519:17:06:47:030995 gpccinstall:linux116:gpadmin-[INFO]:-remotecommand: . /home/gpadmin/greenplum-cc-web-1.2.2.1-build-71/gpcc_path.sh;/home/gpadmin/greenplum-cc-web-1.2.2.1-build-71/bin/gpcmdr --version

   20140519:17:06:52:030995 gpccinstall:linux116:gpadmin-[INFO]:-SUCCESS --Requested commands completed

   

开始设置the Command Center Console

以下操作在primarymaster节点执行：

 

1) 登录到gpadmin用户,停止GP数据库

  gpadmin@linux116:~> gpstop

  

2) 确保gpadmin家目录下面的.bashrc文件中含有如下类似的配置：

  source /home/gpadmin/greenplum-cc-web/gpcc_path.sh

  export MASTER_DATA_DIRECTORY=/data/master/gpseg-1

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

 

   确保要保存.bashrc文件并source.bashrc 使环境变量生效   

  

3) 启动GP数据库

  gpadmin@linux116:~> gpstart

  

4) GP数据库实例起来后，就可以开始执行gpcmdr--setup命令，开始设置Command Center Console:

   gpadmin@linux116:~> gpcmdr --setup 

   

An instance name is used by the GreenplumCommand Center as

a way to uniquely identify a GreenplumDatabase that has the monitoring

components installed and configured.  This name is also used to control

specific instances of the Greenplum CommandCenter web UI.  Instance names

can contain letters, digits and underscoresand are not case sensitive.

 

Please enter a new instance name:

> gpmon_82  #gp监控实例名，用于启停监控时指定

The web component of the Greenplum CommandCenter can connect to a

monitor database on a remote GreenplumDatabase.

 

 

Is the master host for the GreenplumDatabase remote? Yy|Nn (default=N):

> N      #监控是否和GP master同节点，N指同节点

The display name is shown in the webinterface and does not need to be

a hostname.

       

 

What would you like to use for the displayname for this instance:

> linux116  #登录GP监控页面展示的名字

What port does the Greenplum Database use?(default=5432):

>

Creating instance schema in GPDB.  Please wait ...

The Greenplum Command Center runs a smallweb server for the UI and web API. 

This web server by default runs on port28080, but you may specify any available port.

 

What port would you like the web server touse for this instance? (default=28080):

>

Users logging in to the Command Center mustprovide database user

credentials.  In order to protect user names and passwords,it is recommended

that SSL be enabled.

 

 

Do you want to enable SSL for the Web APIYy|Nn (default=N):

> Y   #是否使用SSL加密方式登录GP监控页面

Generating a 2048 bit RSA private key

............................................................+++

...............................................................................................................................+++

writing new private key to'/home/gpadmin/greenplum-cc-web/./instances/gpmon_82/conf/cert.pem'

-----

You are about to be asked to enterinformation that will be incorporated

into your certificate request.

What you are about to enter is what iscalled a Distinguished Name or a DN.

There are quite a few fields but you canleave some blank

For some fields there will be a default value,

If you enter '.', the field will be leftblank.

-----

#下面都是选填的，自己决定是否填写

Country Name (2 letter code) [AU]:US

State or Province Name (full name)[Some-State]:California

Locality Name (eg, city) []:San Mateo

Organization Name (eg, company) [InternetWidgits Pty Ltd]:Greenplum

Organizational Unit Name (eg, section)[]:Engineering

Common Name (e.g. server FQDN or YOUR name)[]:linux116

Email Address []:[email protected]

 

Do you want to enable ipV6 for the Web APIYy|Nn (default=N):

>

 

Do you want to enable Cross Site RequestForgery Protection for the Web API Yy|Nn (default=N):

>

 

#是否将GP监控实例拷贝到standby master节点(冗余备份的目的)

Do you want to copy the instance to astandby master host Yy|Nn (default=Y):

>

What is the hostname of the standby masterhost? [smdw]: linux113

 

Done writing lighttpd configuration to/home/gpadmin/greenplum-cc-web/./instances/gpmon_82/conf/lighttpd.conf

 

Done writing web UI configuration to/home/gpadmin/greenplum-cc-web/./instances/gpmon_82/conf/gpperfmonui.conf

 

Copying instance 'gpmon_82' to host'linux113'...

 

Greenplum Command Center UI configurationis now complete.  If

at a later date you want to change certainparameters, you can

either re-run 'gpcmdr --setup' or edit theconfiguration file

located at /home/gpadmin/greenplum-cc-web/./instances/gpmon_82/conf/gpperfmonui.conf.

 

#打印登录网址

The web UI for this instance is availableathttps://linux116:28080/ 

 

#打印出启动GP监控命令

You can now start the web UI for thisinstance by running: gpcmdr --start gpmon_82

 

5) 启动GP监控

   gpadmin@linux116:~> gpcmdr --start gpmon_82

   Starting instance gpmon_82...

   Greenplum Command Center UI for instance 'gpmon_82' - [RUNNING onPORT:  28080]

   

   

    查看端口号状态：

   gpadmin@linux116:~> lsof -i :28080

   COMMAND  PID    USER  FD   TYPE    DEVICE SIZE/OFF NODE NAME

   lighttpd 353 gpadmin    4u  IPv4 145927203      0t0 TCP *:28080 (LISTEN)

  

 

6) 使用浏览器访问https://10.41.24.102:28080

输入用户名和密码登录就OK了(gpmon/huawei123)

关于登录https://10.41.24.102:28080页面后，输入正确密码却无法登录进去的问题

1)      问题描述，如图所示：

 

提示用户名或密码不正确，但是我使用psql登录数据库是OK的

gpadmin@linux116:~> psql -dgpperfmon -U gpmon -W

Password for user gpmon:   #输入密码huawei123

psql (8.2.15)

Type "help" for help.

 

gpperfmon=# 

 

通过查看日志/home/gpadmin/greenplum-cc-web/instances/gpmon_82/logs/gpmonws.log

如下：

2014-05-2011:22:37,584 - Checking trust login for gpmon on db gpperfmon, host localhost,port :5432

2014-05-2011:22:37,592 - Trust login not allowed.  User gpmon has trust login enabled

2014-05-2011:22:37,592 - Authentication failed user(gpmon)allow_trust_logon(False): Incorrect username/password

 

我们从日志“Trust login not allowed. User gpmon has trust login enabled”可以看出，gpmon是不容许Trust方式登录的，因为GP监控实例配置文件gpperfmonui.conf中默认配置allow_trust_logon=False，指不容许Trust方式登录。

 

这时我们就应该想到肯定是GP数据库的权限配置文件pg_hba.conf有问题，查看如下：

gpadmin@linux116:~>cat /data/master/gpseg-1/pg_hba.conf

host         all     gpadmin  10.41.24.101/32      trust

host         replication        gpadmin  10.41.24.101/32      trust

host         all     gpadmin  10.41.28.250/32      trust

host         replication        gpadmin  10.41.28.250/32      trust

local    all        gpadmin         ident

local    all        noas         md5

host    all         noas       0.0.0.0/0          trust

host    all         gpadmin       0.0.0.0/0          trust

host     all        gpadmin         127.0.0.1/28    trust

host     all        gpadmin        10.41.24.102/32       trust

host     all        gpadmin        192.168.100.116/32       trust

host     all        gpadmin        10.41.28.250/32       trust

host     all        gpadmin         ::1/128       trust

host     all        gpadmin        fe80::225:9eff:feb0:d64a/128      trust

local    replication gpadmin         ident

host     replication gpadmin         samenet       trust

host     all         all           0.0.0.0/0 trust

local    gpperfmon         gpmon         md5

host     all        gpmon         127.0.0.1/28    md5

host     all        gpmon         0.0.0.0/0    trust

 

可以看到竟然配置了“host     all         all           0.0.0.0/0 trust”，容许所有的客户端Trust方式登录，注释掉这一行，然后执行如下命令重新加载pg_hba.conf配置文件：

gpadmin@linux116:~>gpstop –u

 

然后再重新登录GP监控页面，正确输入用户名和密码就可以登录进去了。

 

注：如果是希望gpmon可以Trust方式登录页面(指密码可以随便输入就可以登录进去)，那么你就可以修改GP监控实例配置文件gpperfmonui.conf中配置项

allow_trust_logon = True，指容许Trust方式登录，然后重启GP监控实例：

 

gpcmdr --restart gpmon_82

    这样就可以Trust方式登录进GP监控页面了（输入正确用户名，密码随便输入）。

卸载GP监控

1) 登录Master节点，停止CommandCenter Console 服务

$ gpcmdr --stop

 

2) 登录GP数据库所有节点，删除GP监控安装的目录 

先删除软链接，再删除实际GP实际安装目录(Greenplum DB所有节点都执行)

gpadmin@linux116:~> rm -rf/home/gpadmin/greenplum-cc-web 

gpadmin@linux116:~> rm -rf/home/gpadmin/greenplum-cc-web-1.2.2.1-build-71

 

3) 登录Master节点gpadmin用户，禁用掉数据收集代理：

修改 $MASTER_DATA_DIRECTORY/postgresql.conf 文件，将下面的值修改为off:

gp_enable_gpperfmon=off

 

4) 登录Master节点gpadmin用户，注释掉文件pg_hba.conf下面的内容:

#local gpperfmon gpmon md5

#host gpperfmon gpmon 0.0.0.0/0 md5

 

5) 删除gpmon角色和gpperfmon数据库

gpadmin@linux116:~> psql template1 -c'DROP ROLE gpmon;'

ERROR: role "gpmon" cannot be dropped because some objects depend onit

DETAIL: 21 objects in database gpperfmon

如果按照官方文档描述，先删除gpmon角色，会报错，建立可以先删除gpperfmon数据库再删除gpmon角色。

gpadmin@linux116:~> dropdb gpperfmon

gpadmin@linux116:~> psql template1 -c'DROP ROLE gpmon;'

 

 

6) 重启GP数据库实例:

gpadmin@linux116:~> gpstop -r

 

7) 登录到master节点上面清理掉下面的内容:(MASTER_DATA_DIRECTORY=/data/master/gpseg-1)

gpadmin@linux116:~> rm -rf$MASTER_DATA_DIRECTORY/gpperfmon/data/*

gpadmin@linux116:~> rm -rf$MASTER_DATA_DIRECTORY/gpperfmon/logs/*