I installed Apache Storm 1.0 by following this tutorial : http://opensourceeducation.net/how-to-install-and-configure-apache-strom/ . but i noticed two problems:

-> I can't access to the storm ui from the internet.

-> if I tried to access to localhost:8080, I get the error:

org.apache.storm.utils.NimbusLeaderNotFoundException: Could not find leader nimbus from seed hosts [localhost]. Did you specify a valid list of nimbus hosts for config nimbus.seeds?
at org.apache.storm.utils.NimbusClient.getConfiguredClientAs(NimbusClient.java:90)
at org.apache.storm.ui.core$cluster_configuration.invoke(core.clj:343)
at org.apache.storm.ui.core$fn__12106.invoke(core.clj:929)
at org.apache.storm.shade.compojure.core$make_route$fn__2467.invoke(core.clj:93)
at org.apache.storm.shade.compojure.core$if_route$fn__2455.invoke(core.clj:39)
at org.apache.storm.shade.compojure.core$if_method$fn__2448.invoke(core.clj:24)
at org.apache.storm.shade.compojure.core$routing$fn__2473.invoke(core.clj:106)
at clojure.core$some.invoke(core.clj:2570)
at org.apache.storm.shade.compojure.core$routing.doInvoke(core.clj:106)
at clojure.lang.RestFn.applyTo(RestFn.java:139)
at clojure.core$apply.invoke(core.clj:632)
at org.apache.storm.shade.compojure.core$routes$fn__2477.invoke(core.clj:111)
at org.apache.storm.shade.ring.middleware.json$wrap_json_params$fn__11576.invoke(json.clj:56)
at org.apache.storm.shade.ring.middleware.multipart_params$wrap_multipart_params$fn__3543.invoke(multipart_params.clj:103)
at org.apache.storm.shade.ring.middleware.reload$wrap_reload$fn__4286.invoke(reload.clj:22)
at org.apache.storm.ui.helpers$requests_middleware$fn__3770.invoke(helpers.clj:46)
at org.apache.storm.ui.core$catch_errors$fn__12301.invoke(core.clj:1230)
at org.apache.storm.shade.ring.middleware.keyword_params$wrap_keyword_params$fn__3474.invoke(keyword_params.clj:27)
at org.apache.storm.shade.ring.middleware.nested_params$wrap_nested_params$fn__3514.invoke(nested_params.clj:65)
at org.apache.storm.shade.ring.middleware.params$wrap_params$fn__3445.invoke(params.clj:55)
at org.apache.storm.shade.ring.middleware.multipart_params$wrap_multipart_params$fn__3543.invoke(multipart_params.clj:103)
at org.apache.storm.shade.ring.middleware.flash$wrap_flash$fn__3729.invoke(flash.clj:14)
at org.apache.storm.shade.ring.middleware.session$wrap_session$fn__3717.invoke(session.clj:43)
at org.apache.storm.shade.ring.middleware.cookies$wrap_cookies$fn__3645.invoke(cookies.clj:160)
at org.apache.storm.shade.ring.util.servlet$make_service_method$fn__3351.invoke(servlet.clj:127)
at org.apache.storm.shade.ring.util.servlet$servlet$fn__3355.invoke(servlet.clj:136)
at org.apache.storm.shade.ring.util.servlet.proxy$javax.servlet.http.HttpServlet$ff19274a.service(Unknown Source)
at org.apache.storm.shade.org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:654)
at org.apache.storm.shade.org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1320)
at org.apache.storm.logging.filters.AccessLoggingFilter.handle(AccessLoggingFilter.java:47)
at org.apache.storm.logging.filters.AccessLoggingFilter.doFilter(AccessLoggingFilter.java:39)
at org.apache.storm.shade.org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1291)
at org.apache.storm.shade.org.eclipse.jetty.servlets.CrossOriginFilter.handle(CrossOriginFilter.java:247)
at org.apache.storm.shade.org.eclipse.jetty.servlets.CrossOriginFilter.doFilter(CrossOriginFilter.java:210)
at org.apache.storm.shade.org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1291)
at org.apache.storm.shade.org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:443)
at org.apache.storm.shade.org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1044)
at org.apache.storm.shade.org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:372)
at org.apache.storm.shade.org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:978)
at org.apache.storm.shade.org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
at org.apache.storm.shade.org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
at org.apache.storm.shade.org.eclipse.jetty.server.Server.handle(Server.java:369)
at org.apache.storm.shade.org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:486)
at org.apache.storm.shade.org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:933)
at org.apache.storm.shade.org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:995)
at org.apache.storm.shade.org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:644)
at org.apache.storm.shade.org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
at org.apache.storm.shade.org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)
at org.apache.storm.shade.org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:668)
at org.apache.storm.shade.org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52)
at org.apache.storm.shade.org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
at org.apache.storm.shade.org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
at java.lang.Thread.run(Thread.java:745)
My Storm configuration:
    ########### These MUST be filled in for a storm configuration
 storm.zookeeper.servers:
        - "localhost"
 storm.local.dir: "/var/storm"
 nimbus.host: "localhost"
 supervisor.slots.ports:
        - 6700
        - 6701
        - 6702
        - 6703
I resolved the two problems by myself.
for the first problem:
I had to restart zookeeper after installing apache storm.
for the second problem:
the problem was not a problem of storm.
the cause of this problem is due to the platform of azure, the 8080 port was closed by default.
So, I thank myself for this effort.
If it were allowed, I will give you (myself) +1M points
                "If it were allowed, I will give you (myself) +1M points" and maybe that's why its not allowed :). Thanks for the answer. It helped me
                    – user1351585
                Sep 22 '16 at 15:57
                Another way to solve this is to remove the /storm node from Zk and restart storm fresh. Maybe the Zk state got corrupted. Make sure you keep a backup in case you need to revert pack.
                    – marios
                Oct 28 '16 at 21:34
                I've seen this problem when the storm-local directory which contains the blobstore contents is wiped out, but the ZooKeeper state still references the blobstore objects.  It's an annoyingly obfuscated root cause for the error appearing as it does.  The fix was deleting the ZK nodes related to the absent blobstore elements (e.g., /storm/blobstore/sometopology*).
                    – erik.weathers
                Mar 7 '17 at 2:39
                you can also delete zookeeper data directory once stopped, that is how i was able fix it
                    – fatih tekin
                Apr 7 '17 at 14:35
        
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