"No engine service available for the following app: app:__hub" on Qlik Sense 3.0 Proxy Rim

[#1]

I am attempting to move a client's setup from a single-node installation of Qlik Sense 2.2 to a multi-node installation of Qlik Sense 3.0

I have the central node up and running, and a proxy node talking to the central node fine.  The central node sees the proxy node running properly (2 of 2 services running).  Going to the Hub works fine on the central node, showing the apps that we migrated across to the new (fresh) central node install.  The proxy node is a new install as well, however when I go to the hub on the proxy node I am met with this error:

An error occurred

No engine service is available for the following app:

app:__hub

I thought this may be fixed by going to 3.0 SR1 (as I saw in some other posts here).  However this has not fixed my problem.  I have also tried restarting the Service Dispatcher on the proxy node.  I am not sure where else to look here as the logs on the proxy appear to be fine.  Where else can I look to find what is causing this problem?

[gandalfgray]

Hi Jason,

try opening 4239 and 4949 on the Central node - they are used from proxy to engine node.

[Ricardo_Gerhard]

Hi Jason,

   I´ve the same issue, and a workaround (disable IPV6 on all interfaces) works fine.

   This setting needs to be configure on all interfaces. Anyway, I ran the MS Hotfix to disable IPV6 too (https://support.microsoft.com/pt-br/kb/929852) and disable firewall.

   Please, mark the CORRECT/HELPFUL comments

[hugo_andrade]

Goran, great information.

As we are implementing different proxies and engines, 4900 needs to opened on the Engines attached to the Proxy  as well.

Thanks for sharing