2017-10-27 19:39:14 +08:00
|
|
|
|
# 安装Nginx ingress
|
2017-10-27 19:10:06 +08:00
|
|
|
|
|
2017-10-27 19:15:08 +08:00
|
|
|
|
[Nginx ingress](https://github.com/kubernetes/ingress-nginx) 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](https://traefik.io)来说功能更加强大.
|
|
|
|
|
|
|
|
|
|
|
|
我们使用[helm](http://helm.sh)来部署，[chart](https://github.com/kubernetes/charts)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](helm.md)。
|
|
|
|
|
|
|
|
|
|
|
|
## 镜像准备
|
2017-10-27 19:10:06 +08:00
|
|
|
|
|
|
|
|
|
|
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](https://github.com/rootsongjc/kubernetes-handbook/blob/master/manifests/nginx-ingress)目录下。
|
|
|
|
|
|
|
2017-10-27 19:15:08 +08:00
|
|
|
|
## 步骤详解
|
|
|
|
|
|
|
2017-10-27 19:10:06 +08:00
|
|
|
|
**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](https://github.com/kubernetes/charts/tree/master/stable/nginx-ingress#configuration)。
|
|
|
|
|
|
|
|
|
|
|
|
```bash
|
|
|
|
|
|
helm package .
|
|
|
|
|
|
```
|
|
|
|
|
|
|
|
|
|
|
|
**查看niginx-ingress**
|
|
|
|
|
|
|
|
|
|
|
|
```bash
|
|
|
|
|
|
$ 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**
|
|
|
|
|
|
|
|
|
|
|
|
```bash
|
|
|
|
|
|
$ 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:$HTTPS_NODE_PORT to access your application via HTTPS."
|
|
|
|
|
|
|
|
|
|
|
|
An example Ingress that makes use of the controller:
|
|
|
|
|
|
|
|
|
|
|
|
apiVersion: extensions/v1beta1
|
|
|
|
|
|
kind: Ingress
|
|
|
|
|
|
metadata:
|
|
|
|
|
|
annotations:
|
|
|
|
|
|
kubernetes.io/ingress.class: nginx
|
|
|
|
|
|
name: example
|
|
|
|
|
|
namespace: foo
|
|
|
|
|
|
spec:
|
|
|
|
|
|
rules:
|
|
|
|
|
|
- host: www.example.com
|
|
|
|
|
|
http:
|
|
|
|
|
|
paths:
|
|
|
|
|
|
- backend:
|
|
|
|
|
|
serviceName: exampleService
|
|
|
|
|
|
servicePort: 80
|
|
|
|
|
|
path: /
|
|
|
|
|
|
# This section is only required if TLS is to be enabled for the Ingress
|
|
|
|
|
|
tls:
|
|
|
|
|
|
- hosts:
|
|
|
|
|
|
- www.example.com
|
|
|
|
|
|
secretName: example-tls
|
|
|
|
|
|
|
|
|
|
|
|
If TLS is enabled for the Ingress, a Secret containing the certificate and key must also be provided:
|
|
|
|
|
|
|
|
|
|
|
|
apiVersion: v1
|
|
|
|
|
|
kind: Secret
|
|
|
|
|
|
metadata:
|
|
|
|
|
|
name: example-tls
|
|
|
|
|
|
namespace: foo
|
|
|
|
|
|
data:
|
|
|
|
|
|
tls.crt: <base64 encoded cert>
|
|
|
|
|
|
tls.key: <base64 encoded key>
|
|
|
|
|
|
type: kubernetes.io/tls
|
|
|
|
|
|
```
|
|
|
|
|
|
|
|
|
|
|
|
**访问Nginx**
|
|
|
|
|
|
|
|
|
|
|
|
首先获取Nginx的地址，从我们使用helm安装nginx-ingress命令的输出中那个可以看到提示，根据提示执行可以看到nginx的http和https地址：
|
|
|
|
|
|
|
|
|
|
|
|
```bash
|
|
|
|
|
|
export HTTP_NODE_PORT=$(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
|
|
|
|
|
|
|
|
|
|
|
|
```bash
|
|
|
|
|
|
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**
|
|
|
|
|
|
|
|
|
|
|
|
```bash
|
|
|
|
|
|
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
|
|
|
|
|
|
|
2018-05-05 17:52:40 +08:00
|
|
|
|
- [Ingress-nginx github](https://github.com/kubernetes/ingress-nginx)
|
|
|
|
|
|
- [Nginx chart configuration](https://github.com/kubernetes/charts/tree/master/stable/nginx-ingress)
|
2019-04-24 14:30:18 +08:00
|
|
|
|
- [使用Helm管理kubernetes应用](helm.md)
|
