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I am trying to push some custom metrics into AppDynamics but without success so far. I discovered that, in order to push custom metrics (our blockchain metrics), I had to first push metrics from one of your agents. I decided to take the simple root and deploy a basic Hello World microservice in Python using Flask. It is publicly available at ( https://helloflask.ocyan. cloud/ ) at the moment.   Despite doing that and following AppD documentation I still get the followin error:   14:19:00,000  WARN [AD Thread-Metric Reporter1] MetricHandler - Metric Reporter Queue full. Dropping metrics. 14:19:02,394  INFO [AD Thread Pool-Global0] ConfigurationChannel - Detected node meta info: [Name:ProcessID, Value:9, Name:appdynamics.ip.addresses, Value:10.0.2.143] 14:19:02,394  INFO [AD Thread Pool-Global0] ConfigurationChannel - Sending Registration request with: Application Name [cs-beta], Tier Name [hello-world], Node Name [node 103f], Host Name [3b564073aee2] Node Unique Local ID [node 103f], Version [Python Agent v4.5.2.0 (proxy v4.5.13.27004, agent-api v4.3.5.0)] 14:19:02,653 ERROR [AD Thread Pool-Global0] ConfigurationChannel - Fatal transport error while connecting to URL [/controller/instance/0/ applicationConfiguration]: org.apache.http. NoHttpResponseException: marie2019072902302624.saas. appdynamics.com:443 failed to respond 14:19:02,653  WARN [AD Thread Pool-Global0] ConfigurationChannel - Could not connect to the controller/invalid response from controller, cannot get initialization information, controller host [marie2019072902302624.saas. appdynamics.com], port[443], exception [Fatal transport error while connecting to URL [/controller/instance/0/ applicationConfiguration]] 14:19:02,653  WARN [AD Thread Pool-Global0] AgentErrorProcessor - Agent error occurred, [name,transformId]=[com. singularity.CONFIG. ConfigurationChannel - org.apache.http. NoHttpResponseException, 2147483647] 14:19:02,653  WARN [AD Thread Pool-Global0] AgentErrorProcessor - 0 instance(s) remaining before error log is silenced 14:19:02,653 ERROR [AD Thread Pool-Global0] ConfigurationChannel - Exception: marie2019072902302624.saas. appdynamics.com:443 failed to respond org.apache.http. NoHttpResponseException: marie2019072902302624.saas. appdynamics.com:443 failed to respond at org.apache.http.impl.conn. DefaultHttpResponseParser. parseHead( DefaultHttpResponseParser. java:141) ~[httpclient-4.5.4.jar:4.5.4] at org.apache.http.impl.conn. DefaultHttpResponseParser. parseHead( DefaultHttpResponseParser. java:56) ~[httpclient-4.5.4.jar:4.5.4] at org.apache.http.impl.io. AbstractMessageParser.parse( AbstractMessageParser.java: 259) ~[httpcore-4.4.9.jar:4.4.9] at org.apache.http.impl. DefaultBHttpClientConnection. receiveResponseHeader( DefaultBHttpClientConnection. java:163) ~[httpcore-4.4.9.jar:4.4.9] at org.apache.http.impl.conn. CPoolProxy. receiveResponseHeader( CPoolProxy.java:165) ~[httpclient-4.5.4.jar:4.5.4] at org.apache.http.protocol. HttpRequestExecutor. doReceiveResponse( HttpRequestExecutor.java:273) ~[httpcore-4.4.9.jar:4.4.9] at org.apache.http.protocol. HttpRequestExecutor.execute( HttpRequestExecutor.java:125) ~[httpcore-4.4.9.jar:4.4.9] at org.apache.http.impl. execchain.MainClientExec. execute(MainClientExec.java: 272) ~[httpclient-4.5.4.jar:4.5.4] at org.apache.http.impl. execchain.ProtocolExec. execute(ProtocolExec.java:185) ~[httpclient-4.5.4.jar:4.5.4] at org.apache.http.impl. execchain.RetryExec.execute( RetryExec.java:89) ~[httpclient-4.5.4.jar:4.5.4] at org.apache.http.impl. execchain.RedirectExec. execute(RedirectExec.java:111) ~[httpclient-4.5.4.jar:4.5.4] at org.apache.http.impl.client. InternalHttpClient.doExecute( InternalHttpClient.java:185) ~[httpclient-4.5.4.jar:4.5.4] at org.apache.http.impl.client. CloseableHttpClient.execute( CloseableHttpClient.java:72) ~[httpclient-4.5.4.jar:4.5.4] at com.singularity.ee.util. httpclient.n.a(n.java:289) ~[proxy.jar:Proxy v${python-agent-version} GA SHA-1: DEV-BUILD Date ${TODAY}] at com.singularity.ee.util. httpclient.n.a(n.java:204) ~[proxy.jar:Proxy v${python-agent-version} GA SHA-1: DEV-BUILD Date ${TODAY}] at com.singularity.ee.rest.f.G(f. java:384) ~[proxy.jar:Proxy v${python-agent-version} GA SHA-1: DEV-BUILD Date ${TODAY}] at com.singularity.ee.rest.f.F(f. java:337) ~[proxy.jar:Proxy v${python-agent-version} GA SHA-1: DEV-BUILD Date ${TODAY}] at com.singularity.ee.rest. controller.request.b.F(b.java: 130) ~[proxy.jar:Proxy v${python-agent-version} GA SHA-1: DEV-BUILD Date ${TODAY}] at com.singularity.ee.rest. controller.request.c.a(c.java: 36) ~[proxy.jar:Proxy v${python-agent-version} GA SHA-1: DEV-BUILD Date ${TODAY}] at com.singularity.ee.agent. appagent.kernel.config.xml.p. a(p.java:1480) ~[proxy.jar:Proxy v${python-agent-version} GA SHA-1: DEV-BUILD Date ${TODAY}] at com.singularity.ee.agent. appagent.kernel.config.xml.p. a(p.java:122) ~[proxy.jar:Proxy v${python-agent-version} GA SHA-1: DEV-BUILD Date ${TODAY}] at com.singularity.ee.agent. appagent.kernel.config.xml.w. a(w.java:742) ~[proxy.jar:Proxy v${python-agent-version} GA SHA-1: DEV-BUILD Date ${TODAY}] at com.singularity.ee.agent. appagent.kernel.config.xml.p. a(p.java:521) ~[proxy.jar:Proxy v${python-agent-version} GA SHA-1: DEV-BUILD Date ${TODAY}] at com.singularity.ee.agent. appagent.kernel.config.xml.G. run(G.java:644) ~[proxy.jar:Proxy v${python-agent-version} GA SHA-1: DEV-BUILD Date ${TODAY}] at com.singularity.ee.util. javaspecific.scheduler.o.run( o.java:122) ~[proxy.jar:Proxy v${python-agent-version} GA SHA-1: DEV-BUILD Date ${TODAY}] at java.util.concurrent. Executors$RunnableAdapter. call(Executors.java:511) ~[?:1.8.0_51] at com.singularity.ee.util. javaspecific.scheduler.B.e(B. java:335) ~[proxy.jar:Proxy v${python-agent-version} GA SHA-1: DEV-BUILD Date ${TODAY}] at com.singularity.ee.util. javaspecific.scheduler.a.b(a. java:152) ~[proxy.jar:Proxy v${python-agent-version} GA SHA-1: DEV-BUILD Date ${TODAY}] at com.singularity.ee.util. javaspecific.scheduler.b.a(b. java:119) ~[proxy.jar:Proxy v${python-agent-version} GA SHA-1: DEV-BUILD Date ${TODAY}] at com.singularity.ee.util. javaspecific.scheduler.b.b(b. java:206) ~[proxy.jar:Proxy v${python-agent-version} GA SHA-1: DEV-BUILD Date ${TODAY}] at com.singularity.ee.util. javaspecific.scheduler.b.run( b.java:236) ~[proxy.jar:Proxy v${python-agent-version} GA SHA-1: DEV-BUILD Date ${TODAY}] at com.singularity.ee.util. javaspecific.scheduler.i.a(i. java:694) ~[proxy.jar:Proxy v${python-agent-version} GA SHA-1: DEV-BUILD Date ${TODAY}] at com.singularity.ee.util. javaspecific.scheduler.i.run( i.java:726) ~[proxy.jar:Proxy v${python-agent-version} GA SHA-1: DEV-BUILD Date ${TODAY}]   Any idea how to fix that? Any help is appreciated!   Thanks,   Gabriele ... View more