k8s部署ingress-nginx报错排错

　　不是ingress-nginx不成功出现错误提示

kubectl describe pod nginx-ingress-controller-6ffc8fdf96-xtg6n -n ingress-nginx

 Normal   Scheduled  <unknown>         default-scheduler      Successfully assigned ingress-nginx/nginx-ingress-controller-6ffc8fdf96-xtg6n to 192.168.1.12
  Normal   Pulled     21s               kubelet, 192.168.1.12  Container image "quay.io/kubernetes-ingress-controller/nginx-ingress-controller:0.30.0" already present on machine
  Normal   Created    21s               kubelet, 192.168.1.12  Created container nginx-ingress-controller
  Normal   Started    20s               kubelet, 192.168.1.12  Started container nginx-ingress-controller
  Warning  Unhealthy  5s (x2 over 15s)  kubelet, 192.168.1.12  Readiness probe failed: Get http://192.168.1.12:10254/healthz: dial tcp 192.168.1.12:10254: connect: connection refused
  Warning  Unhealthy  2s                kubelet, 192.168.1.12  Liveness probe failed: Get http://192.168.1.12:10254/healthz: dial tcp 192.168.1.12:10254: connect: connection refused

 　　对应node的kubelet日志

systemctl status kube-proxy -l

 　　报错如下

kuberuntime_container.go:490] preStop hook for container "nginx-ingress-controller" failed: command '/wait-shutdown' exited with 137:

 

 　　查看pod日志

# kubectl logs nginx-ingress-controller-6ffc8fdf96-xtg6n -n ingress-nginx
-------------------------------------------------------------------------------
NGINX Ingress controller
  Release:       0.30.0
  Build:         git-7e65b90c4
  Repository:    https://github.com/kubernetes/ingress-nginx
  nginx version: nginx/1.17.8

-------------------------------------------------------------------------------

W0430 09:48:42.198239       6 flags.go:260] SSL certificate chain completion is disabled (--enable-ssl-chain-completion=false)
W0430 09:48:42.198310       6 client_config.go:543] Neither --kubeconfig nor --master was specified.  Using the inClusterConfig.  This might not work.
I0430 09:48:42.198533       6 main.go:193] Creating API client for https://10.0.0.1:443

 　　判断是10.0.0.443有问题

　　node上telnet失败

# telnet 10.0.0.1 443
Trying 10.0.0.1...

 　　解决方法，修改kube-proxy配置把流量转发该成ipvs模式

cat /opt/kubernetes/cfg/kube-proxy

# cat /opt/kubernetes/cfg/kube-proxy
KUBE_PROXY_OPTS="--logtostderr=false 
--log-dir=/opt/kubernetes/logs/kube-proxy 
--v=4 
--hostname-override=192.168.1.12 
--cluster-cidr=10.0.0.0/24 
--proxy-mode=ipvs 
--masquerade-all=true 
--kubeconfig=/opt/kubernetes/cfg/kube-proxy.kubeconfig"

 　　增加的内容

 　　重启kube-proxy

　　重新不是ingress-nginx即可