The service name cannot be obtained when I am using the VM dashboard.

[dcw2012]

org.apache.skywalking.oap.meter.analyzer.dsl.Expression - 88 [grpcServerPool-1-thread-7] ERROR [] - failed to run "(100 - ((node_memory_SwapFree_bytes * 100) / node_memory_SwapTotal_bytes)).tag({tags -> tags.node_identifier_host_name = 'vm::' + tags.node_identifier_host_name}).service(['node_identifier_host_name'])"
java.lang.IllegalArgumentException: null
at com.google.common.base.Preconditions.checkArgument(Preconditions.java:128) ~[guava-28.1-jre.jar:?]
at org.apache.skywalking.oap.meter.analyzer.dsl.SampleFamily.build(SampleFamily.java:78) ~[meter-analyzer-8.7.0.jar:8.7.0]
at org.apache.skywalking.oap.meter.analyzer.dsl.SampleFamily.newValue(SampleFamily.java:487) ~[meter-analyzer-8.7.0.jar:8.7.0]
at org.apache.skywalking.oap.meter.analyzer.dsl.SampleFamily.div(SampleFamily.java:193) ~[meter-analyzer-8.7.0.jar:8.7.0]
at org.apache.skywalking.oap.meter.analyzer.dsl.SampleFamily$div$10.call(Unknown Source) ~[?:?]
at Script1.run(Script1.groovy:1) ~[?:?]
at org.apache.skywalking.oap.meter.analyzer.dsl.Expression.run(Expression.java:77) ~[meter-analyzer-8.7.0.jar:8.7.0]
at org.apache.skywalking.oap.meter.analyzer.Analyzer.analyse(Analyzer.java:115) ~[meter-analyzer-8.7.0.jar:8.7.0]
at org.apache.skywalking.oap.meter.analyzer.MetricConvert.toMeter(MetricConvert.java:73) ~[meter-analyzer-8.7.0.jar:8.7.0]
at org.apache.skywalking.oap.meter.analyzer.prometheus.PrometheusMetricConverter.toMeter(PrometheusMetricConverter.java:84) ~[meter-analyzer-8.7.0.jar:8.7.0]
at org.apache.skywalking.oap.server.receiver.otel.oc.OCMetricHandler$1.lambda$onNext$6(OCMetricHandler.java:79) ~[otel-receiver-plugin-8.7.0.jar:8.7.0]
at java.util.ArrayList.forEach(ArrayList.java:1259) [?:1.8.0_261]
at org.apache.skywalking.oap.server.receiver.otel.oc.OCMetricHandler$1.onNext(OCMetricHandler.java:79) [otel-receiver-plugin-8.7.0.jar:8.7.0]
at org.apache.skywalking.oap.server.receiver.otel.oc.OCMetricHandler$1.onNext(OCMetricHandler.java:61) [otel-receiver-plugin-8.7.0.jar:8.7.0]
at io.grpc.stub.ServerCalls$StreamingServerCallHandler$StreamingServerCallListener.onMessage(ServerCalls.java:249) [grpc-stub-1.32.1.jar:1.32.1]
at io.grpc.internal.ServerCallImpl$ServerStreamListenerImpl.messagesAvailableInternal(ServerCallImpl.java:309) [grpc-core-1.32.1.jar:1.32.1]
at io.grpc.internal.ServerCallImpl$ServerStreamListenerImpl.messagesAvailable(ServerCallImpl.java:292) [grpc-core-1.32.1.jar:1.32.1]
at io.grpc.internal.ServerImpl$JumpToApplicationThreadServerStreamListener$1MessagesAvailable.runInContext(ServerImpl.java:782) [grpc-core-1.32.1.jar:1.32.1]
at io.grpc.internal.ContextRunnable.run(ContextRunnable.java:37) [grpc-core-1.32.1.jar:1.32.1]
at io.grpc.internal.SerializingExecutor.run(SerializingExecutor.java:123) [grpc-core-1.32.1.jar:1.32.1]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_261]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_261]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_261]

[dcw2012]

and this is the opentelemetry-collector yaml

[wu-sheng]

Showcase project provides you an out-of-box way in the real deployment. You could learn from there.

[dcw2012]

after add label node_identifier_host_name: vm1, he service name can be obtained，but the error not resolved，in the OpenTelemetry
log node_memory_SwapTotal_bytes = 0，Could that be the reason？

org.apache.skywalking.oap.meter.analyzer.dsl.Expression - 88 [grpcServerPool-1-thread-7] ERROR [] - failed to run "(100 - ((node_memory_SwapFree_bytes * 100) / node_memory_SwapTotal_bytes)).tag({tags -> tags.node_identifier_host_name = 'vm::' + tags.node_identifier_host_name}).service(['node_identifier_host_name'])"
java.lang.IllegalArgumentException: null

static_configs:
- targets: [ 'vm1:19100' ]
labels:
node_identifier_host_name: vm1