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安装Nginx ingress
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Nginx ingress 使用ConfigMap来管理Nginx配置,nginx是大家熟知的代理和负载均衡软件,比起Traefik来说功能更加强大.
我们使用helm来部署,chart保存在私有的仓库中,请确保您已经安装和配置好helm,helm安装使用见使用Helm管理kubernetes应用。
镜像准备
安装时需要用到的镜像有:
- sophos/nginx-vts-exporter:v0.6
- gcr.io/google_containers/nginx-ingress-controller:0.9.0-beta.15
- gcr.io/google_containers/defaultbackend:1.3
gcr.io中的那个两个镜像我复制了一份到时速云,可供大家下载:
- index.tenxcloud.com/jimmy/defaultbackend:1.3
- index.tenxcloud.com/jimmy/nginx-ingress-controller:0.9.0-beta.15
Docker hub上的那个镜像可以直接下载,所有的安装时需要的配置保存在../manifests/nginx-ingress目录下。
步骤详解
安装nginx-ingress chart到本地repo中
修改values.yaml
配置,启用RBAC支持,相关配置见nginx-ingress chart。
helm package .
查看niginx-ingress
$ helm search nginx-ingress
NAME VERSION DESCRIPTION
local/nginx-ingress 0.8.9 An nginx Ingress controller that uses ConfigMap...
stable/nginx-ingress 0.8.9 An nginx Ingress controller that uses ConfigMap...
stable/nginx-lego 0.3.0 Chart for nginx-ingress-controller and kube-lego
使用helm部署nginx-ingress
$ helm install --name nginx-ingress local/nginx-ingress
NAME: nginx-ingress
LAST DEPLOYED: Fri Oct 27 18:26:58 2017
NAMESPACE: default
STATUS: DEPLOYED
RESOURCES:
==> rbac.authorization.k8s.io/v1beta1/Role
NAME KIND
nginx-ingress-nginx-ingress Role.v1beta1.rbac.authorization.k8s.io
==> rbac.authorization.k8s.io/v1beta1/RoleBinding
nginx-ingress-nginx-ingress RoleBinding.v1beta1.rbac.authorization.k8s.io
==> v1/Service
NAME CLUSTER-IP EXTERNAL-IP PORT(S) AGE
nginx-ingress-nginx-ingress-controller 10.254.100.108 <nodes> 80:30484/TCP,443:31053/TCP 1s
nginx-ingress-nginx-ingress-default-backend 10.254.58.156 <none> 80/TCP 1s
==> extensions/v1beta1/Deployment
NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE
nginx-ingress-nginx-ingress-default-backend 1 1 1 0 1s
nginx-ingress-nginx-ingress-controller 1 1 1 0 1s
==> v1/ConfigMap
NAME DATA AGE
nginx-ingress-nginx-ingress-controller 1 1s
==> v1/ServiceAccount
NAME SECRETS AGE
nginx-ingress-nginx-ingress 1 1s
==> rbac.authorization.k8s.io/v1beta1/ClusterRole
NAME KIND
nginx-ingress-nginx-ingress ClusterRole.v1beta1.rbac.authorization.k8s.io
==> rbac.authorization.k8s.io/v1beta1/ClusterRoleBinding
nginx-ingress-nginx-ingress ClusterRoleBinding.v1beta1.rbac.authorization.k8s.io
NOTES:
The nginx-ingress controller has been installed.
Get the application URL by running these commands:
export HTTP_NODE_PORT=$(kubectl --namespace default get services -o jsonpath="{.spec.ports[0].nodePort}" nginx-ingress-nginx-ingress-controller)
export HTTPS_NODE_PORT=$(kubectl --namespace default get services -o jsonpath="{.spec.ports[1].nodePort}" nginx-ingress-nginx-ingress-controller)
export NODE_IP=$(kubectl --namespace default get nodes -o jsonpath="{.items[0].status.addresses[1].address}")
echo "Visit http://$NODE_IP:$HTTP_NODE_PORT to access your application via HTTP."
echo "Visit https://$NODE_IP:$HTTPS_NODE_PORT to access your application via HTTPS."
An example Ingress that makes use of the controller:
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
annotations:
kubernetes.io/ingress.class: nginx
name: example
namespace: foo
spec:
rules:
- host: www.example.com
http:
paths:
- backend:
serviceName: exampleService
servicePort: 80
path: /
# This section is only required if TLS is to be enabled for the Ingress
tls:
- hosts:
- www.example.com
secretName: example-tls
If TLS is enabled for the Ingress, a Secret containing the certificate and key must also be provided:
apiVersion: v1
kind: Secret
metadata:
name: example-tls
namespace: foo
data:
tls.crt: <base64 encoded cert>
tls.key: <base64 encoded key>
type: kubernetes.io/tls
访问Nginx
首先获取Nginx的地址,从我们使用helm安装nginx-ingress命令的输出中那个可以看到提示,根据提示执行可以看到nginx的http和https地址:
export HTTP_NODE_PORT=$(kubectl --namespace default get services -o jsonpath="{.spec.ports[0].nodePort}" nginx-ingress-nginx-ingress-controller)
export HTTPS_NODE_PORT=$(kubectl --namespace default get services -o jsonpath="{.spec.ports[1].nodePort}" nginx-ingress-nginx-ingress-controller)
export NODE_IP=$(kubectl --namespace default get nodes -o jsonpath="{.items[0].status.addresses[1].address}")
echo "Visit http://$NODE_IP:$HTTP_NODE_PORT to access your application via HTTP."
echo "Visit https://$NODE_IP:$HTTPS_NODE_PORT to access your application via HTTPS."
Visit http://172.20.0.113:30484 to access your application via HTTP.
Visit https://172.20.0.113:31053 to access your application via HTTPS.
- http地址:http://172.20.0.113:30484
- https地址:https://172.20.0.113:31053
我们分别在http和https地址上测试一下:
/healthz
返回200/
返回404错误
curl -v http://172.20.0.113:30484/healthz
# 返回200
curl -v http://172.20.0.113:30484/
# 返回404
curl -v --insecure http://172.20.0.113:30484/healthz
# 返回200
curl -v --insecure http://172.20.0.113:30484/
# 返回404
删除nginx-ingress
helm delete --purge nginx-ingress
使用--purge
参数可以彻底删除release不留下记录,否则下一次部署的时候不能使用重名的release。
参考
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