Niklas Neesen created KARAF-7829:
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Summary: SLF4J Warnings on Client-Connection
Key: KARAF-7829
URL: https://issues.apache.org/jira/browse/KARAF-7829
Project: Karaf
Issue Type: Bug
Components: karaf
Affects Versions: 4.4.6
Reporter: Niklas Neesen
I have encountered several SLF4J warnings when connecting using the
./bin/client command in Apache Karaf version 4.4.6. The following warnings are
displayed at the beginning of the connection:
{code:java}
SLF4J(W): No SLF4J providers were found.
SLF4J(W): Defaulting to no-operation (NOP) logger implementation
SLF4J(W): See https://www.slf4j.org/codes.html#noProviders for further details.
SLF4J(W): Class path contains SLF4J bindings targeting slf4j-api versions 1.7.x
or earlier.
SLF4J(W): Ignoring binding found at
[jar:file:/Users/niklas/Downloads/apache-karaf-4.4.6/system/org/apache/karaf/org.apache.karaf.client/4.4.6/org.apache.karaf.client-4.4.6.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J(W): See https://www.slf4j.org/codes.html#ignoredBindings for an
explanation.{code}
*Steps to Reproduce:*
# Download and extract Apache Karaf version 4.4.6.
# Navigate to the extracted directory.
# Start Karaf using the command ./bin/start.
# Use the command ./bin/client to connect.
*Expected Behavior:*
No SLF4J warnings should be displayed during the connection process.
*Actual Behavior:*
Multiple SLF4J warnings are displayed, indicating issues with SLF4J provider
bindings and defaulting to a no-operation logger implementation.
*Environment:*
* Apache Karaf version: 4.4.6
* Java version: OpenJDK 11.0.22
Please investigate this issue and provide guidance on how to resolve the SLF4J
warnings.
Thank you.
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