今天上k8s调试微服务，发现抛出一下错误：FATA[0000] Cluster must have at least one etcd plane host: failed to connect to the following etcd host(s) []问题原因：etcd节点挂了，因为一个私钥来连接到服务器（应该配置公钥），它正在尝试从/root/读取它。ssh/idu rsa，但它不存在/

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