68 lines
1.9 KiB
Markdown
68 lines
1.9 KiB
Markdown
# Traefik Ingress Controller
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我们在前面部署了 [Traefik](https://traefik.io) 作为Ingress Controller，如果集群外部直接访问Kubenretes内部服务的话，可以直接创建Ingress如下所示：
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```yaml
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apiVersion: extensions/v1beta1
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kind: Ingress
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metadata:
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name: traefik-ingress
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namespace: default
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spec:
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rules:
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- host: traefik.nginx.io
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http:
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paths:
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- path: /
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backend:
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serviceName: my-nginx
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servicePort: 80
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```
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## Traefik Ingress Controller
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当我们处于迁移应用到kuberentes上的阶段时，可能有部分服务实例不在kubernetes上，服务的路由使用nginx配置，这时处于nginx和ingress共存的状态。参考下面的配置：
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```yaml
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apiVersion: extensions/v1beta1
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kind: Ingress
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metadata:
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name: td-ingress
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namespace: default
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annotations:
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traefik.frontend.rule.type: PathPrefixStrip
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kubernetes.io/ingress.class: traefik
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spec:
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rules:
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- host: "*.jimmysong.io"
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http:
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paths:
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- path: /docGenerate
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backend:
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serviceName: td-sdmk-docgenerate
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servicePort: 80
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```
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注意**annotation**的配置：
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- `traefik.frontend.rule.type: PathPrefixStrip`：表示将截掉URL中的`path`
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- `kubernetes.io/ingress.class`：表示使用的ingress类型
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关于Ingress annotation的更多信息请参考：[Ingress Annotations - kubernetes.io](https://github.com/kubernetes/ingress-nginx/blob/master/docs/annotations.md)。
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在nginx中增加配置：
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```ini
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upstream docGenerate {
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server 172.20.0.119:80;
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keepalive 200;
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}
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```
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172.20.0.119是我们的边缘节点的VIP，见[边缘节点配置](../practice/edge-node-configuration.md)。
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## 参考
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- [Kubernetes Ingress Backend - traefik.io](https://docs.traefik.io/configuration/backends/kubernetes/)
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- [Kubernetes Ingress Controller - traefik.io](http://docs.traefik.io/user-guide/kubernetes/)
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