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Workaround: VMware GRE – DP 7.03/8.1X – vCenter 5.1 U2

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Nach dem Update auf vCenter 5.1 Update 2 und unter Data Protector 7.03 oder 8.1X kann es bei Verwendung von VMware GRE zur Anzeige einer leeren Seite kommen. Grund hierfür können Änderungen im Tomcat vom vCenter sein. Das Plugin von Data Protector (GRE) zeigt dann eine leere Seite an. Bei Kontrolle der Logdateien (z.B. C:\ProgramData\VMware\VMware VirtualCenter\Logs\localhost.YYYY-MM-DD.log) wird der Fehler VMwareGRE: runCGI (stderr):Can't open perl script "C:\Program": No such file or directory protokolliert. Als Workaround kann die Konfigurationsdatei web.xml des VMware GRE Plugins angepasst werden. Bei einer Standardinstallation kann die Datei unter C:\Program Files\VMware\Infrastructure\tomcat\webapps\VMwareGRE\WEB-INF\ gefunden werden. Der Workaround ändert die Art der Parameter Übergabe.

Änderung des Blocks:

<init -param>
<param -name/>executable
<param -value/>“C:\Program Files\OmniBack\bin\perl.exe“ -I „C:\Program Files\OmniBack\lib\perl“
</init>

Geänderter Block:

<init -param>
<param -name/>executable
<param -value/>C:\Program Files\OmniBack\bin\perl.exe
</init>
<init -param>
<param -name/>executable-arg-1
<param -value/>-I
</init>
<init -param>
<param -name/>executable-arg-2
<param -value/>C:\Program Files\OmniBack\lib\perl
</init>

8 thoughts on “Workaround: VMware GRE – DP 7.03/8.1X – vCenter 5.1 U2”

  1. Dear Daniel,

    Unfortunatelly it did not work, it disabled the complete plugin in VMWare vCenter. The plugin cannot be found anymore.

    Regards

    Dennis

    • Hi Dennis, I apologize for the problems this may have caused. The workaround was used in a current case and solved the problem. You may need to open a support case to see if in your environment a different workaround can be applied.

      Best regards
      Daniel

  2. Hello Dennis,

    The most probable reason for the plugin to completely disappear from vCenter after modifying web.xml is a syntax error. Please check that the lines were modified correctly and that the other lines were kept intact.

    Kind Regards,
    Ventzislav

  4. Hi Ventzislav,

    With all respect, why is this in the XML and why do you open the line with instead of closing it?

    I allways thought opening with and closing with .

    Kind Regards,

    Dennis

  5. It works, but only like this:

    Original Script:

    <?xml version="1.0" encoding="ISO-8859-1"?> 
<web-app xmlns="http://java.sun.com/xml/ns/javaee" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" 
    version="2.5"> 

    <display-name>VMware GRE</display-name> 
    <description> 
                VMware GRE web plugin 
    </description> 
  
    <servlet> 
        <servlet-name>VMwareGRE</servlet-name> 
        <servlet-class>org.apache.catalina.servlets.CGIServlet</servlet-class> 
        <init-param> 
            <param-name>debug</param-name> 
            <param-value>0</param-value> 
        </init-param> 
        <init-param> 
            <param-name>cgiPathPrefix</param-name> 
            <param-value>WEB-INF/cgi</param-value> 
        </init-param> 
        <init-param> 
            <param-name>executable</param-name> 
            <param-value>"E:\Program Files\OmniBack\bin\perl.exe" -I "E:\Program Files\OmniBack\lib\perl"</param-value> 
        </init-param> 
                                <init-param> 
                                                <param-name>passShellEnvironment</param-name> 
                                                <param-value>true</param-value> 
                                </init-param> 
 
        <load-on-startup>5</load-on-startup> 
    </servlet> 

    <servlet-mapping> 
        <servlet-name>VMwareGRE</servlet-name> 
        <url-pattern>/cgi-bin/*</url-pattern> 
    </servlet-mapping> 
</web-app>

    Changed Script:

    <?xml version="1.0" encoding="ISO-8859-1"?> 
<web-app xmlns="http://java.sun.com/xml/ns/javaee" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" 
    version="2.5"> 

    <display-name>VMware GRE</display-name> 
    <description> 
                VMware GRE web plugin 
    </description> 

    <servlet> 
        <servlet-name>VMwareGRE</servlet-name> 
        <servlet-class>org.apache.catalina.servlets.CGIServlet</servlet-class> 
        <init-param>  
            <param-name>debug</param-name> 
            <param-value>0</param-value> 
        </init-param> 
        <init-param> 
            <param-name>cgiPathPrefix</param-name> 
            <param-value>WEB-INF/cgi</param-value> 
        </init-param> 
        <init-param> 
            <param-name>executable</param-name> 
            <param-value>"E:\Program Files\OmniBack\bin\perl.exe"</param-value> 
         </init-param> 
                <init-param> 
                    <param-name>executable-arg-1</param-name>         
                    <param-value>-I</param-value> 
                </init-param>    
                <init-param> 
                    <param-name>executable-arg-2</param-name> 
                    <param-value>"E:\Program Files\OmniBack\lib\perl"</param-value> 
                </init-param> 
                                <init-param> 
                                                <param-name>passShellEnvironment</param-name> 
                                                <param-value>true</param-value> 
                                </init-param> 

        <load-on-startup>5</load-on-startup> 
    </servlet> 
     
    <servlet-mapping> 
        <servlet-name>VMwareGRE</servlet-name> 
        <url-pattern>/cgi-bin/*</url-pattern> 
    </servlet-mapping> 
</web-app>

    • Hi Dennis,

      thanks for the feedback and sorry that you have to test yourself… However, I got the Information from HP, so I assumed that it will work.
      I modified you post, as it was not readable…

      Best regards
      Daniel

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