Gave a quick look at the dockerfile, found this:

    wget -c '
https://build.geoserver.org/geoserver/2.16.x/ext-latest/geoserver-2.16-SNAPSHOT-geofence-plugin.zip'
&& \
   ...
    wget -c '
https://build.geoserver.org/geoserver/2.16.x/ext-latest/geoserver-2.16-SNAPSHOT-geofence-server-plugin.zip'
&& \

You have to install the plugin if you have an external, stand-alone
GeoFence server,
or the geofence-server plugin if you just want GeoFence to run fully
integrated.
Never install both of them at the same time

Cheers
Andrea



On Sun, Mar 1, 2020 at 9:55 AM Thọ Trần <tho.i...@gmail.com> wrote:

> Dear Geoserver support team,
> Recently, we have a project that using geoserver and geofence extension,
> we build a image from attach Dockerfile.
> When run this container on my virtual machine, we can access to geofence
> url, but when we run this container on any VPS server (internet server,use
> public IP address), we can't access to geofence URL.
> When I access to GeoFence Admin Page and make Test Connection between
> Geoserver Instance : default-gs and GeoFence services URL : internal:/, it
> have warning : java.lang.NullPointerException.
> When we access to GEoFence Data Rules , we get warning below :
>
>    - An error occurred while loading the page
>
> Oops, something went wrong...
>
> Sorry, something unexpected happened on the server.
>
> The GeoServer user list might help you address this issue. Click here to
> subscribe, and then include in your message the GeoServer version, the
> stack trace below and the steps to reproduce the problem.
> <http://geoserver.org/comm/>
> org.apache.wicket.WicketRuntimeException: Can't instantiate page using
> constructor 'public org.geoserver.geofence.web.GeofenceServerPage()'. An
> exception has been thrown during construction!
> at
> org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:194)
> at
> org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:67)
> at
> org.apache.wicket.DefaultMapperContext.newPageInstance(DefaultMapperContext.java:102)
> at
> org.apache.wicket.core.request.handler.PageProvider.resolvePageInstance(PageProvider.java:271)
> at
> org.apache.wicket.core.request.handler.PageProvider.getPageInstance(PageProvider.java:169)
> at
> org.apache.wicket.request.handler.render.PageRenderer.getPage(PageRenderer.java:78)
> at
> org.apache.wicket.request.handler.render.WebPageRenderer.isPageStateless(WebPageRenderer.java:287)
> at
> org.apache.wicket.request.handler.render.WebPageRenderer.shouldRenderPageAndWriteResponse(WebPageRenderer.java:329)
> at
> org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:193)
> at
> org.apache.wicket.core.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:175)
> at
> org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:895)
> at
> org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64)
> at
> org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:265)
> at
> org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:222)
> at
> org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:293)
> at
> org.apache.wicket.protocol.http.WicketFilter.processRequestCycle(WicketFilter.java:261)
> at
> org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:203)
> at
> org.apache.wicket.protocol.http.WicketServlet.doGet(WicketServlet.java:137)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:634)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
> at
> org.springframework.web.servlet.mvc.ServletWrappingController.handleRequestInternal(ServletWrappingController.java:165)
> at
> org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:177)
> at
> org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:52)
> at
> org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1038)
> at
> org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942)
> at
> org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:998)
> at
> org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:890)
> and when we access GeoFence Admin Rules , we get this warning :
>
> Sorry, something unexpected happened on the server.
>
> The GeoServer user list might help you address this issue. Click here to
> subscribe, and then include in your message the GeoServer version, the
> stack trace below and the steps to reproduce the problem.
> <http://geoserver.org/comm/>
> org.apache.wicket.WicketRuntimeException: Can't instantiate page using
> constructor 'public org.geoserver.geofence.web.GeofenceServerAdminPage()'.
> An exception has been thrown during construction!
> at
> org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:194)
> at
> org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:67)
> at
> org.apache.wicket.DefaultMapperContext.newPageInstance(DefaultMapperContext.java:102)
> at
> org.apache.wicket.core.request.handler.PageProvider.resolvePageInstance(PageProvider.java:271)
> at
> org.apache.wicket.core.request.handler.PageProvider.getPageInstance(PageProvider.java:169)
> at
> org.apache.wicket.request.handler.render.PageRenderer.getPage(PageRenderer.java:78)
> at
> org.apache.wicket.request.handler.render.WebPageRenderer.isPageStateless(WebPageRenderer.java:287)
> at
> org.apache.wicket.request.handler.render.WebPageRenderer.shouldRenderPageAndWriteResponse(WebPageRenderer.java:329)
> at
> org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:193)
> at
> org.apache.wicket.core.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:175)
> at
> org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:895)
> at
> org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64)
> at
> org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:265)
> at
> org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:222)
> at
> org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:293)
> at
> org.apache.wicket.protocol.http.WicketFilter.processRequestCycle(WicketFilter.java:261)
> at
> org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:203)
> at
> org.apache.wicket.protocol.http.WicketServlet.doGet(WicketServlet.java:137)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:634)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
> at
> org.springframework.web.servlet.mvc.ServletWrappingController.handleRequestInternal(ServletWrappingController.java:165)
> at
> org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:177)
> at
> org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:52)
> at
> org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1038)
> at
> org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942)
> at
> org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:998)
> at
> org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:890)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:634)
> at
> org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:875)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
> ==================================================
> we use geoserver version : 2.16.0, tomcat version : 8.5.46 and
> geoserver-2.16-SNAPSHOT-geofence-plugin.zip, 
> geoserver-2.16-SNAPSHOT-geofence-server-plugin.zip
> to build this image.
> Could you help us clear my issue, and give us some suggest that we can
> resolve this problem.
> Thank you !!!!
>
>
> _______________________________________________
> Geoserver-users mailing list
>
> Please make sure you read the following two resources before posting to
> this list:
> - Earning your support instead of buying it, but Ian Turton:
> http://www.ianturton.com/talks/foss4g.html#/
> - The GeoServer user list posting guidelines:
> http://geoserver.org/comm/userlist-guidelines.html
>
> If you want to request a feature or an improvement, also see this:
> https://github.com/geoserver/geoserver/wiki/Successfully-requesting-and-integrating-new-features-and-improvements-in-GeoServer
>
>
> Geoserver-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/geoserver-users
>


-- 

Regards, Andrea Aime == GeoServer Professional Services from the experts!
Visit http://goo.gl/it488V for more information. == Ing. Andrea Aime
@geowolf Technical Lead GeoSolutions S.A.S. Via di Montramito 3/A 55054
Massarosa (LU) phone: +39 0584 962313 fax: +39 0584 1660272 mob: +39 339
8844549 http://www.geo-solutions.it http://twitter.com/geosolutions_it
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Please make sure you read the following two resources before posting to this 
list:
- Earning your support instead of buying it, but Ian Turton: 
http://www.ianturton.com/talks/foss4g.html#/
- The GeoServer user list posting guidelines: 
http://geoserver.org/comm/userlist-guidelines.html

If you want to request a feature or an improvement, also see this: 
https://github.com/geoserver/geoserver/wiki/Successfully-requesting-and-integrating-new-features-and-improvements-in-GeoServer


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