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Version: v1.0

Expose Application

⚠️ 本章节要求当前集群已经安装 ingress 。

如果我们需要将 application 中的服务暴露对外,只需要在该 application 中添加 ingress 的 trait。

我们使用 kubectl 查看 ingress 数据结构。

$ kubectl vela show ingress
# Properties
+--------+------------------------------------------------------------------------------+----------------+----------+---------+
| NAME | DESCRIPTION | TYPE | REQUIRED | DEFAULT |
+--------+------------------------------------------------------------------------------+----------------+----------+---------+
| http | Specify the mapping relationship between the http path and the workload port | map[string]int | true | |
| domain | Specify the domain you want to expose | string | true | |
+--------+------------------------------------------------------------------------------+----------------+----------+---------+

随后,修改且部署下面 application :

# vela-app.yaml
apiVersion: core.oam.dev/v1beta1
kind: Application
metadata:
name: first-vela-app
spec:
components:
- name: express-server
type: webservice
properties:
image: crccheck/hello-world
port: 8000
traits:
- type: ingress
properties:
domain: testsvc.example.com
http:
"/": 8000
$ kubectl apply -f https://raw.githubusercontent.com/oam-dev/kubevela/master/docs/examples/vela-app.yaml
application.core.oam.dev/first-vela-app created

当状态 PHASErunningHEALTHYtrue,说明 application 已经被正确部署:

$ kubectl get application first-vela-app -w
NAME COMPONENT TYPE PHASE HEALTHY STATUS AGE
first-vela-app express-server webservice healthChecking 14s
first-vela-app express-server webservice running true 42s

同时,我们可以通过下面命令行查看 trait 的详情:

$ kubectl get application first-vela-app -o yaml
apiVersion: core.oam.dev/v1beta1
kind: Application
metadata:
name: first-vela-app
namespace: default
spec:
...
services:
- healthy: true
name: express-server
traits:
- healthy: true
message: 'Visiting URL: testsvc.example.com, IP: 47.111.233.220'
type: ingress
status: running
...

最后,我们可以通过以下方式访问部署的服务。

$ curl -H "Host:testsvc.example.com" http://<your ip address>/
<xmp>
Hello World
## .
## ## ## ==
## ## ## ## ## ===
/""""""""""""""""\___/ ===
~~~ {~~ ~~~~ ~~~ ~~~~ ~~ ~ / ===- ~~~
\______ o _,/
\ \ _,'
`'--.._\..--''
</xmp>
Last updated on by guoxudong