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 PHASE
为 running
且 HEALTHY
为 true
,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>