[英]nginx-prometheus-exporter container cannot connect to nginx
[英]nginx-prometheus-exporter deployment failing
我正在嘗試使用nginx-prometheus-exporter
部署Nginx
。 以下是我的部署
apiVersion: apps/v1beta1
kind: Deployment
metadata:
namespace: local
name: nginx
spec:
replicas: 1
template:
metadata:
labels:
app: nginx
spec:
containers:
- name: nginx
image: nginx
imagePullPolicy: Always
ports:
- name: nginx-port
containerPort: 80
protocol: TCP
livenessProbe:
httpGet:
path: /
port: nginx-port
httpHeaders:
- name: Host
value: KubernetesLivenessProbe
initialDelaySeconds: 10
timeoutSeconds: 1
periodSeconds: 15
readinessProbe:
httpGet:
path: /
port: nginx-port
httpHeaders:
- name: Host
value: KubernetesLivenessProbe
initialDelaySeconds: 3
timeoutSeconds: 1
periodSeconds: 8
volumeMounts:
- mountPath: /etc/nginx/conf.d/ # mount nginx-conf volume to /etc/nginx
readOnly: true
name: frontend-conf
- name: nginx-exporter
image: nginx/nginx-prometheus-exporter:0.3.0
resources:
requests:
cpu: 100m
memory: 100Mi
ports:
- name: nginx-ex-port
containerPort: 9113
args:
- -nginx.scrape-uri=http://nginx.local.svc.cluster.local:80/stub_status
volumes:
- name: frontend-conf
configMap:
name: frontend-conf # place ConfigMap `nginx-conf` on /etc/nginx
items:
- key: frontend.local.conf
path: frontend.local.conf
單個容器容器可以工作,但是當我添加nginx-prometheus-exporter
sidecar容器時失敗。
mackbook: xyz$ kubectl logs nginx-6dbbdb64fb-8drmc -c nginx-exporter
2019/05/14 20:17:48 Starting NGINX Prometheus Exporter Version=0.3.0 GitCommit=6570275
2019/05/14 20:17:53 Could not create Nginx Client: Failed to create NginxClient: failed to get http://nginx.local.svc.cluster.local:80/stub_status: Get http://nginx.local.svc.cluster.local:80/stub_status: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)
還能夠從運行在不同名稱空間中的另一個容器curl http://nginx.local.svc.cluster.local
。
任何人都知道指定-nginx.scrape-uri
的正確方法是什么?
從Nginx容器
root@nginx-6fd866c4d7-t8wwf:/# curl localhost/stub_status
<html>
<head><title>404 Not Found</title></head>
<body>
<h1>404 Not Found</h1>
<ul>
<li>Code: NoSuchKey</li>
<li>Message: The specified key does not exist.</li>
<li>Key: beta/stub_status</li>
<li>RequestId: 3319E5A424C7BA31</li>
<li>HostId: zVv5zuAyzqbB2Gw3w1DavEJwgq2sbgI8RPMf7RmPsNQoh/9ftxCmiSwyj/j6q/K3lxEEeUy6aZM=</li>
</ul>
<hr/>
</body>
</html>
root@nginx-6fd866c4d7-t8wwf:/#
nginx容器正在偵聽端口80,並且您將Sidecar配置為訪問8080端口。 而且,您可以在“生產”名稱空間中部署它,但是使用“測試”來訪問nginx。
嘗試使用-nginx.scrape-uri=http://nginx.production.svc.cluster.local:80/stub_status
。
順便說一句,您必須知道Pod中的容器共享一個IP地址和端口空間,並且可以通過localhost找到彼此。
因此,您可以使用-nginx.scrape-uri=http://localhost/stub_status
。
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