I have elastic search running fine on my ARM64 five node k3s cluster. I have moved on to kibana. The status of the kibana pod is Init:CrashLoopBackOff. logging the elastic-internal-init-config container reveals the dreaded "standard_init_linux.go:219: exec user process caused: exec format error"
There is no ARM image for Kibana yet, unfortunately, not sure where you got the information that there would be one.
Download Kibana Free | Get Started Now | Elastic | Elastic shows aarch64 support.
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We don't yet build docker containers for it sorry - kibana | Docker @ Elastic