当我使用docker-compose up
时,它可以工作并且服务正在运行。
但是当我想使用kubectl apply -f
在pod中运行时。在日志中有
[emerg] 1#1:在/etc/nginx/nginx.conf:11]的上游“ backend-user:8080”中找不到主机。我对此一无所知。
这是我的图像
:bmjlearntocode/reverseproxy latest
bmjlearntocode/udacity-frontend local
bmjlearntocode/udacity-restapi-user latest
bmjlearntocode/udacity-restapi-feed latest
这里是docker-compose.yaml
version: "3"
services:
reverseproxy:
image: bmjlearntocode/reverseproxy
ports:
- 8080:8080
restart: always
depends_on:
- backend-user
- backend-feed
backend-user:
image: bmjlearntocode/udacity-restapi-user
volumes:
- $HOME/.aws:/root/.aws
environment:
POSTGRESS_USERNAME: $POSTGRESS_USERNAME
POSTGRESS_PASSWORD: $POSTGRESS_PASSWORD
POSTGRESS_DB: $POSTGRESS_DB
POSTGRESS_HOST: $POSTGRESS_HOST
AWS_REGION: $AWS_REGION
AWS_PROFILE: $AWS_PROFILE
AWS_BUCKET: $AWS_BUCKET
JWT_SECRET: $JWT_SECRET
URL: "http://localhost:8100"
backend-feed:
image: bmjlearntocode/udacity-restapi-feed
volumes:
- $HOME/.aws:/root/.aws
environment:
POSTGRESS_USERNAME: $POSTGRESS_USERNAME
POSTGRESS_PASSWORD: $POSTGRESS_PASSWORD
POSTGRESS_DB: $POSTGRESS_DB
POSTGRESS_HOST: $POSTGRESS_HOST
AWS_REGION: $AWS_REGION
AWS_PROFILE: $AWS_PROFILE
AWS_BUCKET: $AWS_BUCKET
JWT_SECRET: $JWT_SECRET
URL: "http://localhost:8100"
frontend:
image: bmjlearntocode/udacity-frontend:local
ports:
- "8100:80"
这里是nginx.conf
worker_processes 1;
events { worker_connections 1024; }
error_log /dev/stdout debug;
http {
sendfile on;
upstream user {
server backend-user:8080;
}
upstream feed {
server backend-feed:8080;
}
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Host $server_name;
server {
listen 8080;
location /api/v0/feed {
proxy_pass http://feed;
}
location /api/v0/users {
proxy_pass http://user;
}
}
}
当我使用docker-compose up
时,它可以工作。这里是
reverseproxy-deployment.ymal
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
labels:
service: reverseproxy
name: reverseproxy
spec:
replicas: 2
template:
metadata:
labels:
service: reverseproxy
spec:
containers:
- image: bmjlearntocode/reverseproxy
name: reverseproxy
imagePullPolicy: Always
resources:
requests:
memory: "64Mi"
cpu: "250m"
limits:
memory: "1024Mi"
cpu: "500m"
ports:
- containerPort: 8080
restartPolicy: Always
我不确定为什么Nginx在pod启动时为什么找不到'后端',但是可以在docker-compose up
中运行
我在docker中有四个映像,这是两个服务,一个前端和一个反向代理。当我使用docker-compose up时,它可以工作并且服务正在运行。但是当我想使用kubectl时,请应用-...
在kubernetes中,您需要使用Service资源进行此类访问。另外,您需要Ingress资源或Service,其类型为nodeport,以便从kubernetes集群外部访问应用程序(例如,从浏览器访问)。