Kubernetes DNS吊舱在kubeadm初始化后失败

我正在运行

kubeadminit--pod network cidr=10.244.0.0/16

来部署k8s。之后我运行

kubectl apply-fhttps://raw.githubusercontent.com/coreos/flannel/2140ac876ef134e0ed5af15c65e414cf26827915/Documentation/kube-flannel.yml

安装法兰绒吊舱网络。 紧接着，我启动了核心dns吊舱并运行，但日志显示：

[INFO] plugin/reload: Running configuration MD5 = 4e235fcc3696966e76816bcd9034ebc7
CoreDNS-1.6.5
linux/amd64, go1.13.4, c2fd1b2
[ERROR] plugin/errors: 2 2304295940078007789.7023563928002468477. HINFO: read udp 10.244.1.3:60266->172.20.0.1:53: i/o timeout
[ERROR] plugin/errors: 2 2304295940078007789.7023563928002468477. HINFO: read udp 10.244.1.3:40761->172.20.0.1:53: i/o timeout
[ERROR] plugin/errors: 2 2304295940078007789.7023563928002468477. HINFO: read udp 10.244.1.3:50495->172.20.0.1:53: i/o timeout
[ERROR] plugin/errors: 2 2304295940078007789.7023563928002468477. HINFO: read udp 10.244.1.3:41244->172.20.0.1:53: i/o timeout
[ERROR] plugin/errors: 2 2304295940078007789.7023563928002468477. HINFO: read udp 10.244.1.3:37152->172.20.0.1:53: i/o timeout
[ERROR] plugin/errors: 2 2304295940078007789.7023563928002468477. HINFO: read udp 10.244.1.3:35273->172.20.0.1:53: i/o timeout
[ERROR] plugin/errors: 2 2304295940078007789.7023563928002468477. HINFO: read udp 10.244.1.3:36979->172.20.0.1:53: i/o timeout
[ERROR] plugin/errors: 2 2304295940078007789.7023563928002468477. HINFO: read udp 10.244.1.3:56856->172.20.0.1:53: i/o timeout
[ERROR] plugin/errors: 2 2304295940078007789.7023563928002468477. HINFO: read udp 10.244.1.3:59105->172.20.0.1:53: i/o timeout
[ERROR] plugin/errors: 2 2304295940078007789.7023563928002468477. HINFO: read udp 10.244.1.3:42423->172.20.0.1:53: i/o timeout

我做错了什么？

---

我如何更正它？

核心dns吊舱完全依赖于网络插件，在您的情况下，网络插件是法兰绒的。如果法兰绒出现任何问题，dns吊舱将无法正常启动。按照flannel github

ReadMe.md

中的说明，执行以下命令，尝试安装最新版本的flannel

---

kubectl应用-fhttps://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml

请提供更多信息。操作系统，kubernetes版本，平台？只是很快尝试在Ubuntu 16.04上复制-没有这样的问题。