If you want Slider to allocate a port for you, use a
${COMPONENT_NAME.ALLOCATED_PORT} variable in the appConfig, like this:
https://github.com/apache/incubator-slider/blob/develop/app-packages/hbase/appConfig-default.json#L39This is typically used for singleton / master ports that need to be known by the client, whereas ports that are only used internally by the app can be set to 0 so the app selects a random port (if the app supports that). To publish the ALLOCATED_PORT, you would specify an export in the metainfo, like this: https://github.com/apache/incubator-slider/blob/develop/app-packages/hbase/metainfo.xml#L42 If there are multiple instances of a component and each one needs its own port, you add {PER_CONTAINER}: https://github.com/apache/incubator-slider/blob/develop/app-packages/accumulo/appConfig-default.json#L31 and then have a component export: https://github.com/apache/incubator-slider/blob/develop/app-packages/accumulo/metainfo.xml#L147 On Mon, Apr 3, 2017 at 11:16 AM, David.Serafini <david.seraf...@target.com> wrote: > On the wiki in : > > https://slider.incubator.apache.org/docs/configuration/resources.html > > It says: > > If the component were configured to request an explicit port for its > REST endpoint > > How do you do this? The docs and examples show various variables related > to port number. Which one(s) must I set explicitly? > > Also, does Slider check that the port is not in use on the compute node > before launching the app? > > thanks, > -david > > > > >
