two error when deploy my three CentOS7 on Hyper-V,please have a look if U R free

[blue002324github]

Created symlink from /etc/systemd/system/multi-user.target.wants/etcd.service to /etc/systemd/system/etcd.service.
Job for etcd.service failed because the control process exited with error code. See "systemctl status etcd.service" and "journalctl -xe" for details.
which: no kube-apiserver in (/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin)
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specifically, section 10.2.3 ("Information Requirements").
Error: client: etcd cluster is unavailable or misconfigured; error #0: x509: certificate signed by unknown authority

error #0: x509: certificate signed by unknown authority

十分感谢宝贵的时间