Java Runtime Metrics is not captured by default

[ryariyaz25]

Datadog document says Java Runtime Metrics enabled by default for the Java tracer v0.29.0+ version but I could not see Java Runtime Metrics. I even enabled these flags DD_JMXFETCH_ENABLED=true., DD_RUNTIME_METRICS_ENABLED=true but no luck. help me troubleshooting the issue. i am running agent as docker container

DATADOG TRACER CONFIGURATION {"version":"0.108.1~5d2b67be17","os_name":"Linux","os_version":"","architecture":"amd64","lang":"jvm","lang_version":"1.8.0_342","jvm_vendor":"","jvm_version":"25.342-b07","java_class_version":"52.0","http_nonProxyHosts":"null","http_proxyHost":"null","enabled":true,"service":"partner","agent_url":"","agent_error":false,"debug":false,"analytics_enabled":false,"sampling_rules":[{},{}],"priority_sampling_enabled":true,"logs_correlation_enabled":true,"profiling_enabled":false,"appsec_enabled":false,"dd_version":"partnerui","health_checks_enabled":true,"configuration_file":"no config file present","runtime_id":"9ac48667-196f-426","logging_settings":{"levelInBrackets":false,"dateTimeFormat":"'[dd.trace 'yyyy-MM-dd HH:mm:ss:SSS Z']'","logFile":"System.err","configurationFile":"simplelogger.properties","showShortLogName":false,"showDateTime":true,"showLogName":true,"showThreadName":true,"defaultLogLevel":"INFO","warnLevelString":"WARN","embedException":false},"cws_enabled":false,"cws_tls_refresh":5000}

[DashrathMundkar]

I also had the same issue after mounting this path /var/run/datadog/ fixed issue for me.

-v /var/run/datadog/:/var/run/datadog/