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SamplingProfiler does not load on Alpine based linux image

Aperta
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#3,217 1 commento 0 reazioni 0 assegnatari Vedi su GitHub

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Valutazione

Difficoltà
4/5
Tempo stimato
3-5 giorni
Idoneità per principianti
45/100
Tipo di issue
Bug
Chiarezza
Abbastanza chiara
Stato di attività
Ferma
Stack tecnologico
java, linux
Ambito
performance

Direzione di ricerca

Inizia da AsyncProfiler.getInstance e loadNativeLibrary in AsyncProfiler.java, quindi riproduci il fallimento con profiling_inferred_spans_enabled su un’immagine basata su Alpine. Determina come l’agente seleziona la libreria nativa; il lavoro è completato quando viene caricata la libreria MUSL invece di libasyncProfiler-linux-x64 e il profiler di campionamento si avvia senza UnsatisfiedLinkError.

Scritto dal modello di indicizzazione a partire dal testo della issue.

Descrizione

agent-java bug community enhancement

Describe the bug

Enabling the sampling profiler on an Alpine based linux image results in a UnsatisfiedLinkError because libasyncProfiler-linux-x64 is loaded instead of the MUSL version.

Steps to reproduce

  1. Attach APM agent on Alpine based linux machine (in our case eclipse-temurin:17-alpine)
  2. Enable profiling_inferred_spans_enabled

Results in:

java.lang.IllegalStateException: It is likely that /home/appuser/ is not an executable location. Consider setting the profiling_inferred_spans_lib_directory property to a directory on a partition that allows execution
	at co.elastic.apm.agent.profiler.asyncprofiler.AsyncProfiler.getInstance(AsyncProfiler.java:86) ~[elastic-apm-agent-acb9b5f90d88f71f7c4eae5b818f1082-e6256b9ad98d9992211305097d439d61.jar:1.39.0]
	at co.elastic.apm.agent.profiler.SamplingProfiler.profile(SamplingProfiler.java:395) ~[elastic-apm-agent-acb9b5f90d88f71f7c4eae5b818f1082-e6256b9ad98d9992211305097d439d61.jar:1.39.0]
	at co.elastic.apm.agent.profiler.SamplingProfiler.run(SamplingProfiler.java:376) [elastic-apm-agent-acb9b5f90d88f71f7c4eae5b818f1082-e6256b9ad98d9992211305097d439d61.jar:1.39.0]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539) [?:?]
	at java.util.concurrent.FutureTask.run(FutureTask.java:264) [?:?]
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304) [?:?]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) [?:?]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) [?:?]
	at co.elastic.apm.agent.util.ExecutorUtils$2.run(ExecutorUtils.java:99) [elastic-apm-agent-acb9b5f90d88f71f7c4eae5b818f1082-e6256b9ad98d9992211305097d439d61.jar:1.39.0]
	at java.lang.Thread.run(Thread.java:833) [?:?]
Caused by: java.lang.UnsatisfiedLinkError: /home/appuser/libasyncProfiler-linux-x64-acb9b5f90d88f71f7c4eae5b818f1082-c6d96bf140e0562f0ce2765a99ced1c2.so: Error loading shared library libstdc++.so.6: No such file or directory (needed by /home/appuser/libasyncProfiler-linux-x64-acb9b5f90d88f71f7c4eae5b818f1082-c6d96bf140e0562f0ce2765a99ced1c2.so)
	at jdk.internal.loader.NativeLibraries.load(Native Method) ~[?:?]
	at jdk.internal.loader.NativeLibraries$NativeLibraryImpl.open(NativeLibraries.java:388) ~[?:?]
	at jdk.internal.loader.NativeLibraries.loadLibrary(NativeLibraries.java:232) ~[?:?]
	at jdk.internal.loader.NativeLibraries.loadLibrary(NativeLibraries.java:174) ~[?:?]
	at java.lang.ClassLoader.loadLibrary(ClassLoader.java:2389) ~[?:?]
	at java.lang.Runtime.load0(Runtime.java:755) ~[?:?]
	at java.lang.System.load(System.java:1953) ~[?:?]
	at co.elastic.apm.agent.profiler.asyncprofiler.AsyncProfiler.loadNativeLibrary(AsyncProfiler.java:106) ~[elastic-apm-agent-acb9b5f90d88f71f7c4eae5b818f1082-e6256b9ad98d9992211305097d439d61.jar:1.39.0]
	at co.elastic.apm.agent.profiler.asyncprofiler.AsyncProfiler.getInstance(AsyncProfiler.java:84) ~[elastic-apm-agent-acb9b5f90d88f71f7c4eae5b818f1082-e6256b9ad98d9992211305097d439d61.jar:1.39.0]
	... 9 more

Note that we're running with ENV LD_PRELOAD=/lib/libgcompat.so.0:/usr/lib/libunwind.so.8 because of a Netty native issue, without that you might get another exception

Expected behavior

Load the MUSL library. Either by detecting Alpine environment somehow or by adding a configuration option to instruct to load MUSL library version.

Debug logs

2023-07-03 08:27:15,716 [Attach Listener] INFO  co.elastic.apm.agent.configuration.StartupInfo - Starting Elastic APM 1.39.0 as ** on Java 17.0.7 Runtime version: 17.0.7+7 VM version: 17.0.7+7 (Eclipse Adoptium) Linux 5.10.176+
2023-07-03 08:27:15,718 [Attach Listener] INFO  co.elastic.apm.agent.configuration.StartupInfo - environment: 'NL-DEV' (source: /configuration/elasticapm.properties)
2023-07-03 08:27:15,720 [Attach Listener] INFO  co.elastic.apm.agent.configuration.StartupInfo - config_file: '/configuration/elasticapm.properties' (source: Environment Variables)
2023-07-03 08:27:15,721 [Attach Listener] INFO  co.elastic.apm.agent.configuration.StartupInfo - plugins_dir: '/home/appuser/apm-plugins' (source: Environment Variables)
2023-07-03 08:27:15,721 [Attach Listener] INFO  co.elastic.apm.agent.configuration.StartupInfo - activation_method: 'PROGRAMMATIC_SELF_ATTACH' (source: Attachment configuration)
2023-07-03 08:27:15,722 [Attach Listener] INFO  co.elastic.apm.agent.configuration.StartupInfo - secret_token: 'XXXX' (source: /configuration/elasticapm.properties)
2023-07-03 08:27:15,723 [Attach Listener] INFO  co.elastic.apm.agent.configuration.StartupInfo - server_urls: '**' (source: /configuration/elasticapm.properties)
2023-07-03 08:27:15,725 [Attach Listener] INFO  co.elastic.apm.agent.configuration.StartupInfo - application_packages: 'io.h4h' (source: /configuration/elasticapm.properties)
2023-07-03 08:27:15,725 [Attach Listener] INFO  co.elastic.apm.agent.configuration.StartupInfo - profiling_inferred_spans_enabled: 'true' (source: Attachment configuration)
2023-07-03 08:27:15,726 [Attach Listener] INFO  co.elastic.apm.agent.configuration.StartupInfo - profiling_inferred_spans_lib_directory: '/home/appuser/' (source: Attachment configuration)
Lingua principale
Java
Stelle
593
Fork
337
Merge medio
15h 24m
PR unite (30g)
15

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