Messaggi di log multilinea e tracce dello stack

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Instana supporta messaggi di log multilinea e tracce di stack dai container ( Docker e containerd ). I messaggi di log multilinea e le tracce dello stack vengono aggregati insieme come un unico evento, semplificando la risoluzione dei problemi.

Messaggi di log multilinea

I messaggi di log multilinea vengono solitamente visualizzati come singoli messaggi di log separati. Instana identifica i singoli messaggi di log che fanno parte di un unico messaggio di log multilinea in base al timestamp. A partire dal messaggio di log più recente con un timestamp, ogni messaggio di log successivo senza timestamp viene considerato parte di un messaggio di log multilinea.

Gli esempi seguenti mostrano messaggi di log su più righe:

Esempio 1

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::                (v3.2.5)

Esempio 2

2023-10-08T08:49:17.645+00:00 | INFO | nstana-sensor-scheduler-thread-1 | PackageInstaller | com.instana.discovery-python - 1
Traceback (most recent call last):
  File "/usr/local/lib/python3.6/site-packages/pip/_internal/cli/base_command.py", line 223, in _main
        status = self.run(options, args)
  File "/usr/local/lib/python3.6/site-packages/pip/_internal/cli/req_command.py", line 180, in wrapper
        return func(self, options, args)
  File "/usr/local/lib/python3.6/site-packages/pip/_internal/commands/install.py", line 454, in run
        options.target_dir, target_temp_dir, options.upgrade
  File "/usr/local/lib/python3.6/site-packages/pip/_internal/commands/install.py", line 461, in _handle_target_dir
        ensure_dir(target_dir)
  File "/usr/local/lib/python3.6/site-packages/pip/_internal/utils/misc.py", line 117, in ensure_dir
        os.makedirs(path)
  File "/usr/lib64/python3.6/os.py", line 210, in makedirs
        makedirs (head, mode, exist_ok)
  File "/usr/lib64/python3.6/os.py", line 210, in makedirs
        makedirs (head, mode, exist_ok)
  File "/usr/lib64/python3.6/os.py", line 210, in makedirs
        makedirs (head, mode, exist_ok)
  [Previous line repeated 1 more time]
  File "/usr/lib64/python3.6/os.py", line 220, in makedirs
        mkdir(name, mode)
FileNotFoundError: [Errno 2] No such file or directory: '/proc/1710'

2023-10-08T08:49:21.317+00:00 | INFO_ | d8f6c8dac361e3387053486ae4957736 | Docker| com.instana.sensor-docker – 1.1.5

L'immagine seguente mostra un esempio di messaggio di log multilinea " Java™ " nei log " Instana ":

Tracce dello stack

Instana Supporta stack trace da applicazioni Java™, Python e Go. Instana considera solo un sottoinsieme dei formati di log definiti come standard da questi linguaggi. Le tracce dello stack vengono identificate e raggruppate utilizzando espressioni regolari basate su standard per ciascun linguaggio.

Esempio di stack trace dell' Java™

// Example 1:
Exception in thread "main" java.lang.RuntimeException: A test exception
  at com.stackify.stacktrace.StackTraceExample.methodB(StackTraceExample.java:13)
  at com.stackify.stacktrace.StackTraceExample.methodA(StackTraceExample.java:9)
  at com.stackify.stacktrace.StackTraceExample.main(StackTraceExample.java:5)

// Exception name: java.lang.RuntimeException
// Exception message: A test exception
// Stack trace: all lines


// Example 2:
com.instana.backend.common.exception.InstanaException: java.io.InterruptedIOException: Connection has been shut down
        at com.instana.backend.common.client.AbstractHttpClient.execute(AbstractHttpClient.java:217)
        at com.instana.groundskeeper.client.GroundskeeperClient.getHttpEndpointConfigs(GroundskeeperClient.java:360)
        at com.instana.spanprocessing.stream.common.ReloadingConfigCache.loadInternal(ReloadingConfigCache.java:79)
        at com.instana.spanprocessing.stream.common.ReloadingConfigCache$1.reload(ReloadingConfigCache.java:68)
        at com.instana.spanprocessing.stream.common.ReloadingConfigCache$1.reload(ReloadingConfigCache.java:59)
        at com.github.benmanes.caffeine.cache.CacheLoader.lambda$asyncReload$2(CacheLoader.java:190)
        at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1700)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
        at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: java.io.InterruptedIOException: Connection has been shut down
        at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:342)
        at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:186)
        at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89)
        at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110)
        at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185)
        at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)
        at com.instana.backend.common.client.AbstractHttpClient.executeInternalRequest(AbstractHttpClient.java:238)
        at com.instana.backend.common.client.AbstractHttpClient.execute(AbstractHttpClient.java:212)
        ... 9 common frames omitted
Caused by: org.apache.http.impl.conn.ConnectionShutdownException: null
        at org.apache.http.impl.conn.CPoolProxy.getValidConnection(CPoolProxy.java:77)
        at org.apache.http.impl.conn.CPoolProxy.getSSLSession(CPoolProxy.java:137)
        at org.apache.http.impl.client.DefaultUserTokenHandler.getUserToken(DefaultUserTokenHandler.java:82)
        at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:326)
        ... 16 common frames omitted

// Exception name: com.instana.backend.common.exception.InstanaException
// Exception message: java.io.InterruptedIOException: Connection has been shut down
// Stack trace: all lines


// Example 3 (suppressed exceptions):
Exception in thread "main" java.lang.RuntimeException: I wanted to access this resource. Bad luck. Its dirty resource !!!
    at DirtyResource.accessResource(DirtyResource.java:9)
    at SuppressedExceptionDemoWithTryWithResource.main(SuppressedExceptionDemoWithTryWithResource.java:12)
    Suppressed: java.lang.NullPointerException: Remember me. I am your worst nightmare !! I am Null pointer exception !!
        at DirtyResource.close(DirtyResource.java:19)
        at SuppressedExceptionDemoWithTryWithResource.main(SuppressedExceptionDemoWithTryWithResource.java:13)
                Caused by: org.apache.http.impl.conn.ConnectionShutdownException: null
                                at org.apache.http.impl.conn.CPoolProxy.getValidConnection(CPoolProxy.java:77)

// Exception name: java.lang.RuntimeException
// Exception message: I wanted to access this resource. Bad luck. Its dirty resource !!!
// Stack trace: all lines

L'immagine seguente mostra un esempio di traccia dello stack di Java™ dai log di Instana :

Esempio di stack trace dell' Python

# Example 1:
Traceback (most recent call last):
  File "example.py", line 5, in <module>
    say('Micheal')
  File "example.py", line 3, in say
    print('Hello, ' + nam)
NameError: name 'nam' is not defined

# Exception type: NameError
# Exception message: name 'nam' is not defined
# Stack trace: all lines


# Example 2 (handling an exception raises another exception, with logger used to log):
ERROR:root:Everything is broken
Traceback (most recent call last):
  File "/tmp/spam2.py", line 13, in throws
    1 / 0
ZeroDivisionError: division by zero

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
 File "/tmp/spam2.py", line 18, in <module>
    f1()
  File "/tmp/spam2.py", line 2, in f1
    f2()
  File "/tmp/spam2.py", line 5, in f2
    f3()
  File "/tmp/spam2.py", line 8, in f3
    throws()
  File "/tmp/spam2.py", line 15, in throws
    raise Exception("boom")
Exception: boom

# Exception type: ZeroDivisionError
# Exception message: division by zero
# Stack trace: all lines


# Example 3 (source not available):
Traceback (most recent call last):
  File "example.py", line 5, in <module>
  File "example.py", line 3, in say
NameError: name 'nam' is not defined

# Exception type: NameError
# Exception message: name 'nam' is not defined
# Stack trace: all lines

Esempio di stack trace dell' Golang

Panic: Want something

goroutine 1 [running]:
main.Example(0x2080c3f50, 0x2, 0x4, 0x425c0, 0x5, 0xa)
        /Users/bill/Spaces/Go/Projects/src/github.com/goinaction/code/temp/main.go:9 +0x64
main.main()
        /Users/bill/Spaces/Go/Projects/src/github.com/goinaction/code/temp/main.go:5 +0x85

goroutine 2 [runnable]:
runtime.forcegchelper()
        /Users/bill/go/src/runtime/proc.go:90
runtime.goexit()
        /Users/bill/go/src/runtime/asm_amd64.s:2232 +0x1

goroutine 3 [runnable]:
runtime.bgsweep()
        /Users/bill/go/src/runtime/mgc0.go:82
runtime.goexit()
        /Users/bill/go/src/runtime/asm_amd64.s:2232 +0x1

# Exception type: null
# Exception message: Want something
# Stack trace: all lines