Having just installed Metricbeat, using nearly exactly the default config file, I was surprised to see error messages show up in Elasticsearch that mention the Jolokia module. It's definitely not enabled in my configfile, and to stop the messages showing up, I had to explicitly disable it:
It's 5.4.3, but now I'm actually pretty confident it was spurious messages coming from someone else's Metricbeat installed on another machine that I wasn't aware of. Sorry for the noise.
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