# Elastic APM server http://localhost:8220/ is not available (Server returned status 400) **URL:** \ **Category:** APM\ **Tags:** docker, java\ **Created:** [March 14, 2023, 9:12am UTC](https://discuss.elastic.co/t/elastic-apm-server-http-localhost-8220-is-not-available-server-returned-status-400/327639 "2023-03-14T09:12:05Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Jean-Rene\_Robin](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jean-rene_robin/32/41841_2.png) [@Jean-Rene\_Robin](https://discuss.elastic.co/u/Jean-Rene_Robin)\ **Post date:** [March 14, 2023, 9:12am UTC](https://discuss.elastic.co/t/elastic-apm-server-http-localhost-8220-is-not-available-server-returned-status-400/327639/1 "2023-03-14T09:12:05Z")
I cannot connect to APM server using SpringBoot and Tomcat : I run the docker-compose file from [GitHub - elastic/apm-server: APM Server](https://github.com/elastic/apm-server) , and added the following configuration to my run configuration in Inteliij IDEA : ```bash -javaagent:/xxx/tools/elastic/elastic-apm-agent-1.36.0.jar -Delastic.apm.service_name=juno-local-dev -Delastic.apm.server_url=http://localhost:8220 -Delastic.apm.environment=dev -Delastic.apm.secret_token= -Delastic.apm.application_packages=com.example.juno ``` When the server start, I can see this log : ```auto 2023-03-14 10:07:09,564 [main] INFO co.elastic.apm.agent.util.JmxUtils - Found JVM-specific OperatingSystemMXBean interface: com.sun.management.OperatingSystemMXBean 2023-03-14 10:07:09,610 [main] INFO co.elastic.apm.agent.util.JmxUtils - Found JVM-specific ThreadMXBean interface: com.sun.management.ThreadMXBean 2023-03-14 10:07:09,641 [main] INFO co.elastic.apm.agent.configuration.StartupInfo - Starting Elastic APM 1.36.0 as juno-local-dev on Java 11.0.18 Runtime version: 11.0.18+10-LTS VM version: 11.0.18+10-LTS (Amazon.com Inc.) Mac OS X 13.2.1 2023-03-14 10:07:09,642 [main] INFO co.elastic.apm.agent.configuration.StartupInfo - service_name: 'juno-local-dev' (source: Java System Properties) 2023-03-14 10:07:09,643 [main] INFO co.elastic.apm.agent.configuration.StartupInfo - environment: 'dev' (source: Java System Properties) 2023-03-14 10:07:09,643 [main] INFO co.elastic.apm.agent.configuration.StartupInfo - server_url: 'http://localhost:8220' (source: Java System Properties) 2023-03-14 10:07:09,643 [main] INFO co.elastic.apm.agent.configuration.StartupInfo - application_packages: 'com.example.juno' (source: Java System Properties) 2023-03-14 10:07:12,870 [main] INFO co.elastic.apm.agent.impl.ElasticApmTracer - Tracer switched to RUNNING state 2023-03-14 10:07:12,997 [elastic-apm-server-healthcheck] WARN co.elastic.apm.agent.report.ApmServerHealthChecker - Elastic APM server http://localhost:8220/ is not available (Server returned status 400) ``` ---
**Author:** ![Jack\_Shirazi](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jack_shirazi/32/91641_2.png) [@Jack\_Shirazi](https://discuss.elastic.co/u/Jack_Shirazi)\ **Post date:** [March 14, 2023, 4:19pm UTC](https://discuss.elastic.co/t/elastic-apm-server-http-localhost-8220-is-not-available-server-returned-status-400/327639/2 "2023-03-14T16:19:47Z")
docker has different access to reach outside the container. In order to access your local machine use `host.docker.internal` instead of `localhost` ---
**Author:** ![Jean-Rene\_Robin](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jean-rene_robin/32/41841_2.png) [@Jean-Rene\_Robin](https://discuss.elastic.co/u/Jean-Rene_Robin)\ **Post date:** [March 14, 2023, 10:24pm UTC](https://discuss.elastic.co/t/elastic-apm-server-http-localhost-8220-is-not-available-server-returned-status-400/327639/3 "2023-03-14T22:24:12Z")
The Java application is running outside the container, on the IDE. And the 8220 port is publicly available outside the container (see docker-compose.yml). HTTP 400 means that I reached the fleet endpoint in some way. Therefore I think this is not the problem. ---
**Author:** ![stephenb](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/stephenb/32/40856_2.png) [@stephenb](https://discuss.elastic.co/u/stephenb)\ **Post date:** [March 15, 2023, 12:56am UTC](https://discuss.elastic.co/t/elastic-apm-server-http-localhost-8220-is-not-available-server-returned-status-400/327639/4 "2023-03-15T00:56:38Z")
Hi @Jean-Rene_Robin Test the endpoint > **[Server information API | APM User Guide \[8.6\] | Elastic](https://www.elastic.co/guide/en/apm/guide/current/api-info.html)** `curl -v -X POST http://localhost:8200/ -H "Authorization: Bearer secret_token"` Is it running on HTTPS? if you installed it with Fleet at the APM integration it probably is... `curl -v -k -X POST https://localhost:8200/ -H "Authorization: Bearer secret_token"` and if it is self signed > **[Reporter configuration options | APM Java Agent Reference \[1.x\] | Elastic](https://www.elastic.co/guide/en/apm/agent/java/current/config-reporter.html#config-verify-server-cert)** ---
**Author:** ![Jean-Rene\_Robin](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jean-rene_robin/32/41841_2.png) [@Jean-Rene\_Robin](https://discuss.elastic.co/u/Jean-Rene_Robin)\ **Post date:** [March 16, 2023, 12:33pm UTC](https://discuss.elastic.co/t/elastic-apm-server-http-localhost-8220-is-not-available-server-returned-status-400/327639/5 "2023-03-16T12:33:11Z")
I'm sorry (newbie here), there was no error. I eventually realized I did not create an APM server. I was contacting the Fleet Server instead of the APM server. I thought the APM server was embedded in the fleet docker, at that time I had not correctly understood the architecture. I added an APM docker in the stack, and it worked. Thank you for you answers. For reference, the `docker-compose.yml` file (using data from [apm-server/testing/docker at main · elastic/apm-server · GitHub](https://github.com/elastic/apm-server/tree/main/testing/docker) stored in a folder called `configuration`) . ```yaml version: '3.9' services: elasticsearch: image: docker.elastic.co/elasticsearch/elasticsearch:8.8.0-ba3f07b2-SNAPSHOT ports: - 9200:9200 healthcheck: test: ["CMD-SHELL", "curl -s http://localhost:9200/_cluster/health?wait_for_status=yellow&timeout=500ms"] retries: 300 interval: 1s environment: - "ES_JAVA_OPTS=-Xms1g -Xmx1g" - "network.host=0.0.0.0" - "transport.host=127.0.0.1" - "http.host=0.0.0.0" - "cluster.routing.allocation.disk.threshold_enabled=false" - "discovery.type=single-node" - "xpack.security.authc.anonymous.roles=remote_monitoring_collector" - "xpack.security.authc.realms.file.file1.order=0" - "xpack.security.authc.realms.native.native1.order=1" - "xpack.security.enabled=true" - "xpack.license.self_generated.type=trial" - "xpack.security.authc.token.enabled=true" - "xpack.security.authc.api_key.enabled=true" - "logger.org.elasticsearch=${ES_LOG_LEVEL:-error}" - "action.destructive_requires_name=false" volumes: - "./configuration/elasticsearch/roles.yml:/usr/share/elasticsearch/config/roles.yml" - "./configuration/elasticsearch/users:/usr/share/elasticsearch/config/users" - "./configuration/elasticsearch/users_roles:/usr/share/elasticsearch/config/users_roles" - "./configuration/elasticsearch/ingest-geoip:/usr/share/elasticsearch/config/ingest-geoip" kibana: image: docker.elastic.co/kibana/kibana:8.8.0-ba3f07b2-SNAPSHOT ports: - 5601:5601 healthcheck: test: ["CMD-SHELL", "curl -s http://localhost:5601/api/status | grep -q 'All services are available'"] retries: 300 interval: 1s environment: ELASTICSEARCH_HOSTS: '["http://elasticsearch:9200"]' ELASTICSEARCH_USERNAME: "${KIBANA_ES_USER:-kibana_system_user}" ELASTICSEARCH_PASSWORD: "${KIBANA_ES_PASS:-changeme}" XPACK_FLEET_AGENTS_FLEET_SERVER_HOSTS: '["https://fleet-server:8220"]' XPACK_FLEET_AGENTS_ELASTICSEARCH_HOSTS: '["http://elasticsearch:9200"]' depends_on: elasticsearch: { condition: service_healthy } volumes: - "./configuration/kibana/kibana.yml:/usr/share/kibana/config/kibana.yml" fleet-server: image: docker.elastic.co/beats/elastic-agent:8.8.0-ba3f07b2-SNAPSHOT ports: - 8220:8220 healthcheck: test: ["CMD-SHELL", "curl -s -k https://localhost:8220/api/status | grep -q 'HEALTHY'"] retries: 300 interval: 1s environment: FLEET_SERVER_ENABLE: "1" FLEET_SERVER_POLICY_ID: "fleet-server-apm" FLEET_SERVER_ELASTICSEARCH_HOST: http://elasticsearch:9200 FLEET_SERVER_ELASTICSEARCH_USERNAME: "${ES_SUPERUSER_USER:-admin}" FLEET_SERVER_ELASTICSEARCH_PASSWORD: "${ES_SUPERUSER_PASS:-changeme}" FLEET_SERVER_CERT: /etc/pki/tls/certs/fleet-server.pem FLEET_SERVER_CERT_KEY: /etc/pki/tls/private/fleet-server-key.pem FLEET_URL: https://fleet-server:8220 KIBANA_FLEET_SETUP: "true" KIBANA_FLEET_HOST: "http://kibana:5601" KIBANA_FLEET_USERNAME: "${ES_SUPERUSER_USER:-admin}" KIBANA_FLEET_PASSWORD: "${ES_SUPERUSER_PASS:-changeme}" depends_on: elasticsearch: { condition: service_healthy } kibana: { condition: service_healthy } volumes: - "./configuration/fleet-server/certificate.pem:/etc/pki/tls/certs/fleet-server.pem" - "./configuration/fleet-server/key.pem:/etc/pki/tls/private/fleet-server-key.pem" apm-server: image: docker.elastic.co/apm/apm-server:8.6.2 cap_add: ["CHOWN", "DAC_OVERRIDE", "SETGID", "SETUID"] cap_drop: ["ALL"] ports: - 8200:8200 command: > apm-server -e -E apm-server.rum.enabled=true -E setup.kibana.host=kibana:5601 -E setup.template.settings.index.number_of_replicas=0 -E apm-server.kibana.enabled=true -E apm-server.kibana.host=http://kibana:5601 -E apm-server.kibana.username=${ES_SUPERUSER_USER:-admin} -E apm-server.kibana.password=${ES_SUPERUSER_PASS:-changeme} -E output.elasticsearch.hosts=["http://elasticsearch:9200"] -E output.elasticsearch.username=${KIBANA_ES_USER:-apm_server_user} -E output.elasticsearch.password=${KIBANA_ES_PASS:-changeme} healthcheck: interval: 10s retries: 12 test: curl --write-out 'HTTP %{http_code}' --fail --silent --output /dev/null http://localhost:8200/ depends_on: elasticsearch: { condition: service_healthy } kibana: { condition: service_healthy } metricbeat: image: docker.elastic.co/beats/metricbeat:8.8.0-ba3f07b2-SNAPSHOT environment: ELASTICSEARCH_HOSTS: '["http://elasticsearch:9200"]' ELASTICSEARCH_USERNAME: "${KIBANA_ES_USER:-admin}" ELASTICSEARCH_PASSWORD: "${KIBANA_ES_PASS:-changeme}" depends_on: elasticsearch: { condition: service_healthy } fleet-server: { condition: service_healthy } volumes: - "./configuration/metricbeat/elasticsearch-xpack.yml://usr/share/metricbeat/modules.d/elasticsearch-xpack.yml" - "./configuration/metricbeat/apm-server.yml://usr/share/metricbeat/modules.d/apm-server.yml" profiles: - monitoring ``` ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [April 6, 2023, 8:34am UTC](https://discuss.elastic.co/t/elastic-apm-server-http-localhost-8220-is-not-available-server-returned-status-400/327639/6 "2023-04-06T08:34:02Z")
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