DDT Device Driver Tool Kit reporting Service Unavailable when trying to access the webpage

Products

• VMware Smart Assurance

Issue/Introduction

Symptoms:

Attempt to load the web app DDT Device Driver Toolkit from the browser reports Server Unavailable message in the browser when trying to reach the DDT webapp at: 

https://<NCM_AS_IP>/ddt/

Environment

NCM - v10.1.X

Cause

In this case customer upgraded NCM from 9.5.1.x to 10.1.x. The permissions may be the cause of the issue.

Resolution

1). Ncm-as service uses tomcat from $VOYENCE_HOME/ncmcore and DDT uses tomcat from $TOMCAT_HOME.

2). Hence we will have ddt logs captured at $TOMCAT_HOME/logs directory (Request the zipped files of this directory for review)
 
3). If there was a recent upgrade to 10.1.x Check for any errors in NCM-10.1.1.0-debug.log, NCM-10.1.1.0-install.log with respect to ddt, If so request these these logs, for review.

4). Check the files at $TOMCAT_HOME/webapps/ & $TOMCAT_HOME/webapps/ddt directory. Do they match the entries in the attached txt file? If yes, execute the following in their lab setup on AS/CS:

1. source /etc/voyence.conf

2. chown -R tomcat:tomcat $VOYENCE_HOME/custompackage/ddtDrivers/

3. chmod -R 777 $VOYENCE_HOME/custompackage

4. chmod -R 777 $VOYENCE_HOME/package

5. chown -R tomcat:tomcat $TOMCAT_HOME/webapps/ddt

6. service tomcat restart

After performing above steps, check if they are able to launch ddt webpage at https://<NCM_AS_IP/ddt

Additional Information

root@bngsmartsncm webapps]# source /etc/voyence.conf
[root@bngsmartsncm logs]# cd $TOMCAT_HOME/webapps/
[root@bngsmartsncm webapps]# ls -lrth
total 328K
drwxr-x--- 5 tomcat tomcat  4.0K May 25  2020 manager
drwxr-x--- 5 tomcat tomcat  4.0K May 25  2020 host-manager
drwxr-x--- 8 tomcat tomcat  4.0K Sep 14  2020 SysAdmin
-r--r----- 1 root   voyence 312K Sep 15  2020 ddt.war
drwxr-x--- 5 tomcat tomcat  4.0K Oct 27 00:53 ddt
[root@bngsmartsncm webapps]# 
[root@bngsmartsncm webapps]# cd ddt
[root@bngsmartsncm ddt]# 
[root@bngsmartsncm ddt]# ls -lrth
total 520K
-rw-r----- 1 tomcat tomcat 4.6K Jun  1  2020 welcome.jsp
-rw-r----- 1 tomcat tomcat  561 Jun  1  2020 warning.htm
-rw-r----- 1 tomcat tomcat  13K Jun  1  2020 sysprops.jsp
-rw-r----- 1 tomcat tomcat 7.1K Jun  1  2020 summary.jsp
-rw-r----- 1 tomcat tomcat  17K Jun  1  2020 sorttable.js
-rw-r----- 1 tomcat tomcat  853 Jun  1  2020 quickdriver.jsp
-rw-r----- 1 tomcat tomcat  173 Jun  1  2020 q.jsp
-rw-r----- 1 tomcat tomcat 4.5K Jun  1  2020 qcmds.jsp
-rw-r----- 1 tomcat tomcat 171K Jun  1  2020 qaddprelim.pdf
-rw-r----- 1 tomcat tomcat  865 Jun  1  2020 qadd.jsp
-rw-r----- 1 tomcat tomcat 1.4K Jun  1  2020 qadd.css
-rw-r----- 1 tomcat tomcat  14K Jun  1  2020 pushes.jsp
-rw-r----- 1 tomcat tomcat  17K Jun  1  2020 pulls.jsp
-rw-r----- 1 tomcat tomcat  14K Jun  1  2020 prompts.jsp
-rw-r----- 1 tomcat tomcat 6.6K Jun  1  2020 Originalmenu.jsp
-rw-r----- 1 tomcat tomcat 7.1K Jun  1  2020 menu.jsp
-rw-r----- 1 tomcat tomcat  650 Jun  1  2020 menudata_en.js
-rw-r----- 1 tomcat tomcat 8.7K Jun  1  2020 md5.js
-rw-r----- 1 tomcat tomcat  441 Jun  1  2020 logout.jsp
-rw-r----- 1 tomcat tomcat 2.4K Jun  1  2020 login.jsp
-rw-r----- 1 tomcat tomcat  47K Jun  1  2020 Login.gif
-rw-r----- 1 tomcat tomcat  292 Jun  1  2020 index.jsp
-rw-r----- 1 tomcat tomcat 1.8K Jun  1  2020 help.jsp
-rw-r----- 1 tomcat tomcat  32K Jun  1  2020 helpdata_en.js
-rw-r----- 1 tomcat tomcat 1.1K Jun  1  2020 helpbutton.jsp
-rw-r----- 1 tomcat tomcat 4.8K Jun  1  2020 events.jsp
-rw-r----- 1 tomcat tomcat  927 Jun  1  2020 download.jsp
-rw-r----- 1 tomcat tomcat  14K Jun  1  2020 discovery.jsp
-rw-r----- 1 tomcat tomcat  863 Jun  1  2020 devicedriver.jsp
-rw-r----- 1 tomcat tomcat 2.0K Jun  1  2020 currlist.jsp
-rw-r----- 1 tomcat tomcat 8.4K Jun  1  2020 credential.jsp
-rw-r----- 1 tomcat tomcat 6.3K Jun  1  2020 clicmds.jsp
-rw-r----- 1 tomcat tomcat 3.0K Jun  1  2020 buttons.jsp
-rw-r----- 1 tomcat tomcat  12K Jun  1  2020 basicinfo.jsp
drwxr-x--- 2 tomcat tomcat 4.0K Sep 15  2020 help
drwxr-x--- 3 tomcat tomcat 4.0K Sep 15  2020 WEB-INF
drwxr-x--- 2 tomcat tomcat 4.0K Sep 15  2020 META-INF
[root@bngsmartsncm ddt]# cd WEB-INF/
[root@bngsmartsncm WEB-INF]# ls -lrth
total 8.0K
-rw-r----- 1 tomcat tomcat 3.9K Jun  1  2020 web.xml
drwxr-x--- 2 tomcat tomcat 4.0K Sep 15  2020 lib
[root@bngsmartsncm WEB-INF]# cd lib/
[root@bngsmartsncm lib]# ls -lrth
total 36K
-rw-r----- 1 tomcat tomcat 35K Jun  1  2020 qadd.jar
[root@bngsmartsncm lib]# cd ../../
[root@bngsmartsncm ddt]# cd META-INF/
[root@bngsmartsncm META-INF]# ls -lrth
total 4.0K
-rw-r----- 1 tomcat tomcat 100 Jun  1  2020 MANIFEST.MF
-rw-r----- 1 tomcat tomcat   0 Sep 15  2020 war-tracker
[root@bngsmartsncm META-INF]# pwd
/usr/tomcat/apache-tomcat-9.0.33/webapps/ddt/META-INF
[root@bngsmartsncm META-INF]#