我正在使用Ambari 2.7.5，Storm无法启动并且仍在关闭，出现警报错误：
Connection failed: [Errno 111] Connection refused to bigdata.paltel.net:6627
我一直在通过日志文件在nimbus日志中得到以下错误：
Could not initialize metrics collector, please specify protocol, host, port under $STORM_HOME/conf/config.yaml
java.lang.NullPointerException: null
at org.apache.hadoop.metrics2.sink.storm.StormTimelineMetricsReporter.prepare(StormTimelineMetricsReporter.java:79) ~[ambari-metrics-storm-sink-with-common-2.4.1.0.22.jar:?]
at org.apache.storm.metric.ClusterMetricsConsumerExecutor.prepare(ClusterMetricsConsumerExecutor.java:46) ~[storm-core-1.1.0.2.6.4.0-91.jar:1.1.0.2.6.4.0-91]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_112]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_112]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_112]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_112]
at clojure.lang.Reflector.invokeMatchingMethod(Reflector.java:93) ~[clojure-1.7.0.jar:?]
at clojure.lang.Reflector.invokeNoArgInstanceMember(Reflector.java:313) ~[clojure-1.7.0.jar:?]
at org.apache.storm.daemon.nimbus$fn__9556$exec_fn__3302__auto____9557.invoke(nimbus.clj:2469) ~[storm-core-1.1.0.2.6.4.0-91.jar:1.1.0.2.6.4.0-91]
at clojure.lang.AFn.applyToHelper(AFn.java:156) ~[clojure-1.7.0.jar:?]
at clojure.lang.AFn.applyTo(AFn.java:144) ~[clojure-1.7.0.jar:?]
at clojure.core$apply.invoke(core.clj:630) ~[clojure-1.7.0.jar:?]
at org.apache.storm.daemon.nimbus$fn__9556$service_handler__9589.doInvoke(nimbus.clj:2446) ~[storm-core-1.1.0.2.6.4.0-91.jar:1.1.0.2.6.4.0-91]
at clojure.lang.RestFn.invoke(RestFn.java:421) ~[clojure-1.7.0.jar:?]
at org.apache.storm.daemon.nimbus$launch_server_BANG_.invoke(nimbus.clj:2534) ~[storm-core-1.1.0.2.6.4.0-91.jar:1.1.0.2.6.4.0-91]
at org.apache.storm.daemon.nimbus$_launch.invoke(nimbus.clj:2567) ~[storm-core-1.1.0.2.6.4.0-91.jar:1.1.0.2.6.4.0-91]
at org.apache.storm.daemon.nimbus$_main.invoke(nimbus.clj:2590) ~[storm-core-1.1.0.2.6.4.0-91.jar:1.1.0.2.6.4.0-91]
at clojure.lang.AFn.applyToHelper(AFn.java:152) ~[clojure-1.7.0.jar:?]
at clojure.lang.AFn.applyTo(AFn.java:144) ~[clojure-1.7.0.jar:?]
at org.apache.storm.daemon.nimbus.main(Unknown Source) ~[storm-core-1.1.0.2.6.4.0-91.jar:1.1.0.2.6.4.0-91]
2020-03-19 19:56:30.133 o.a.s.d.m.MetricsUtils main [INFO] Using statistics reporter plugin:org.apache.storm.daemon.metrics.reporters.JmxPreparableReporter
2020-03-19 19:56:30.134 o.a.s.d.m.r.JmxPreparableReporter main [INFO] Preparing...
2020-03-19 19:56:30.154 o.a.s.d.common main [INFO] Started statistics report plugin...
2020-03-19 19:56:30.221 o.a.s.d.nimbus main [INFO] Starting nimbus server for storm version '1.1.0.2.6.4.0-91'