With ROR 6.1-1.17.5 , i got a SLF4J log error in stdout console for each elasticsearch restart (ES 6.1.1 and RHEL 6.7).
SLF4J: Failed to load class “org.slf4j.impl.StaticLoggerBinder”.
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See SLF4J Error Codes for further details.
on /usr/share/elasticsearch/plugins/readonlyrest directory we have total 81 jar files.
ls -ltr /usr/share/elasticsearch/plugins/readonlyrest/slf command retrun slf4j-api-1.7.25.jar
we got the errors in multiple nodes but the elasticsearch started OK.
what are the implications of this error?