In the k8s environment, the ip of the pod can be changed, but the hostname of pod is stable. When the host machine of the pod fails, the k8s can schedule the failed pod to the new host machine for reconstruction. After that, the newly created pod's hostname remains unchanged, and the ip address has been changed. The change of the be node's ip address can be detected by FQDNManager when enable_fqdn_mode is true
Co-authored-by: caiconghui1 <caiconghui1@jd.com>
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