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安装ingress-nginx遇到的一些坑实战记录

作者:令溶炎

ingress是kubernetes集群对外暴露服务的一种方式,下面这篇文章主要给大家介绍了关于安装ingress-nginx遇到的一些坑,文中通过实例代码介绍的非常详细,需要的朋友可以参考下

环境:

Linux:CentOS Linux release 7.9.2009 (Core)

Kubernetes:v1.23.5

Dokcer:20.10.14

一、安装ingress-nginx

wget https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v1.1.1/deploy/static/provider/cloud/deploy.yaml

二、修改deploy.yaml文件

1、注释掉external Traffic Policy:Local

2、因默认镜像源国内无法访问 ,修改为dockerhub上的镜像源

修改controller/deploy的image:

image: bitnami/nginx-ingress-controller:1.1.2

 修改ingress.nginx-admission-create的image:

image: liangjw/kube-webhook-certgen:v1.1.1

 修改ingress-nginx-admission-patch的image:

image: liangjw/kube-webhook-certgen:v1.1.1

三、部署ingress-nginx

# kubectl apply -f deploy.yaml
查看pods部署状态
# kubectl get pods -n ingress-nginx -w
NAME                                        READY   STATUS      RESTARTS   AGE
ingress-nginx-admission-create-2mp7n        0/1     Completed   0          3s
ingress-nginx-admission-patch-xrdf5         0/1     Completed   0          3s
ingress-nginx-controller-859fb9b444-zq4n6   0/1     Running     0          3s
ingress-nginx-controller-859fb9b444-zq4n6   1/1     Running     0          20s

部署过程中可能遇到的报错如下

1、ingress-nginx-admission-create和ingress-nginx-admission-patch部署失败,报错如下

# kubectl logs -n ingress-nginx ingress-nginx-admission-create-bj4d4
W0418 01:48:48.738693       1 client_config.go:615] Neither --kubeconfig nor --master was specified.  Using the inClusterConfig.  This might not work.
{"err":"Get \"https://10.20.0.1:443/api/v1/namespaces/ingress-nginx/secrets/ingress-nginx-admission\": dial tcp 10.20.0.1:443: i/o timeout","level":"fatal","msg":"error getting secret","source":"k8s/k8s.go:232","time":"2022-04-18T01:49:18Z"}

解决方法:

在deploy.yaml中Ingress-nginx-admission-create和Ingress-nginx-admission-patch的Job资源下的spec.template.spec中添加如下hostNetwork: true,重新部署

 2、ingress-nginx-controller报错如下:

# kubectl describe pod -n ingress-nginx ingress-nginx-controller-55bc668cd8-fbrjn
  Warning  FailedMount  8m51s (x3 over 8m53s)   kubelet            MountVolume.SetUp failed for volume "webhook-cert" : secret "ingress-nginx-admission" not found
  Normal   Pulled       8m11s (x4 over 8m45s)   kubelet            Container image "registry.aliyuncs.com/google_containers/nginx-ingress-controller:v1.1.2@sha256:dcbc1b017e63a50ef369c4827d2d92334dce13ca0966712de45a8661ba97bc32" already present on machine
 
# kubectl logs -f ingress-nginx-controller-55bc668cd8-fbrjn -n ingress-nginx
standard_init_linux.go:228: exec user process caused: exec format error

 报错原因:镜像版本和环境版本不匹配,使用的阿里云的镜像,但是架构不一样,更换镜像为上面第二步中的镜像

3、更换镜像之后再次部署时,ingress-nginx-controller报错如下

# kubectl logs -f -n ingress-nginx ingress-nginx-controller-6b
W0418 07:38:49.717651       1 client_config.go:615] Neither --kubeconfig nor --master was specified.  Using the inClusterConfig.  This might not work.
I0418 07:38:49.717901       1 main.go:223] "Creating API client" host="https://10.20.0.1:443"

这次的报错同ingress-nginx-admission-create报错,在ingress-nginx-controller的Deployment中spec.template.spec中添加如下hostNetwork: true

修改完成后,重新部署即可 

总结

到此这篇关于安装ingress-nginx遇到的一些坑的文章就介绍到这了,更多相关安装ingress-nginx坑内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家!

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