little investigation.
VCSA 6.5
Entering by SSH.
There are two interesting logs
/var/log/vmware/vsphere-ui/logs/vsphere_client_virgo.log
This is HTML5 client log. When accessing any of Hardware Health you get this in the logfile:
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[2016-12-28T14:37:33.929Z] [ERROR] data-service-pool-1112 70000225 100003 200001 com.vmware.vise.util.http.ConnectionManager Error reading from the stream: https://vcenter.fqdn:443/hwh/gwtcim?host=host-5170&op=getHostData
[2016-12-28T14:37:33.929Z] [WARN ] data-service-pool-1112 70000225 100003 200001 com.vmware.vim.cimmonitor.http.impl.CimVc61HttpService No host data. Http status code: 404
[2016-12-28T14:37:33.936Z] [ERROR] data-service-pool-1105 70000225 100003 200001 System.err [Fatal Error] :1:1: Premature end of file.
[2016-12-28T14:37:33.937Z] [ERROR] data-service-pool-1105 70000225 100003 200001 c.v.vsphere.client.host.hardware.ciminfo.HostCimInfoXmlReader Error parsing XML document org.xml.sax.SAXParseException: Premature end of file.
at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:257)
at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:339)
at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:121)
at com.vmware.vsphere.client.host.hardware.ciminfo.HostCimInfoXmlReader.initializeXmlDocumentAndXpath(HostCimInfoXmlReader.java:96)
at com.vmware.vsphere.client.host.hardware.ciminfo.HostCimInfoXmlReader.parse(HostCimInfoXmlReader.java:81)
at com.vmware.vsphere.client.host.hardware.ciminfo.HostCimInfoPropertyProvider.getHardwareStatus(HostCimInfoPropertyProvider.java:53)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.vmware.vise.data.query.impl.ServicePropertyProviderAdapter.invokeMethod(ServicePropertyProviderAdapter.java:285)
at com.vmware.vise.data.query.impl.ServicePropertyProviderAdapter.getProperties(ServicePropertyProviderAdapter.java:127)
at com.vmware.vise.data.query.impl.DataManager.getDataFromPropertyProvider(DataManager.java:1301)
at com.vmware.vise.data.query.impl.DataManager.getResultFromPropertyProvider(DataManager.java:1269)
at com.vmware.vise.data.query.impl.DataManager.access$000(DataManager.java:78)
at com.vmware.vise.data.query.impl.DataManager$1.call(DataManager.java:784)
at com.vmware.vise.data.query.impl.DataManager$1.call(DataManager.java:780)
at com.vmware.vise.util.concurrent.ExecutorUtil$2.call(ExecutorUtil.java:654)
at com.vmware.vise.util.concurrent.ExecutorUtil$ThreadContextPropagatingTask.call(ExecutorUtil.java:957)
at com.vmware.vise.data.query.internal.profiling.MdcAwareExecutorService$1.call(MdcAwareExecutorService.java:148)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
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/var/log/vmware/vsphere-client/logs/vsphere_client_virgo.log
This is Flash client log. There are no exception but similar ERROR:
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[2016-12-28T15:04:40.152Z] [ERROR] data-service-pool-120259 70032048 102281 201989 com.vmware.vise.util.http.ConnectionManager Error reading from the stream: https://vcenter.technoserv.ts:443/hwh/gwtcim?host=host-5105&op=getHostData
[2016-12-28T15:04:40.153Z] [WARN ] data-service-pool-120259 70032048 102281 201989 com.vmware.vim.cimmonitor.http.impl.CimVc61HttpService No host data. Http status code: 404
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Question is: what service is responsible for /hwh and where to see it's logs. Maybe it will give us a qlue.