Flask Kubernetes NGINX can';找不到uWSGI应用程序服务器,但正在使用docker compose
我有一个带有两个映像的应用程序,一个运行NGINX,另一个运行Flask/uWSGI。它使用docker compose按预期工作。现在我尝试在Kubernetes集群上部署我的应用程序,但我无法在NGINX和我的uWSGI应用服务器之间建立连接 日志是我的nginx部署,比如: 2019/09/13 11:29:53[错误]6#6:*21连接到上游时上游超时(110:连接超时),客户端:10.244.0.1,服务器:,请求:“GET/HTTP/1.1”,上游:uwsgi://10.0.232.218:8080,主机:“52.166.xxxxxx” 但是,我的flask服务似乎运行正常Flask Kubernetes NGINX can';找不到uWSGI应用程序服务器,但正在使用docker compose,flask,kubernetes,docker-compose,uwsgi,Flask,Kubernetes,Docker Compose,Uwsgi,我有一个带有两个映像的应用程序,一个运行NGINX,另一个运行Flask/uWSGI。它使用docker compose按预期工作。现在我尝试在Kubernetes集群上部署我的应用程序,但我无法在NGINX和我的uWSGI应用服务器之间建立连接 日志是我的nginx部署,比如: 2019/09/13 11:29:53[错误]6#6:*21连接到上游时上游超时(110:连接超时),客户端:10.244.0.1,服务器:,请求:“GET/HTTP/1.1”,上游:uwsgi://10.0.232.
NAMESPACE NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
default flask NodePort 10.0.232.218 <none> 8080:32043/TCP 23m
default kubernetes ClusterIP 10.0.0.1 <none> 443/TCP 19h
default nginx LoadBalancer 10.0.162.165 52.166.xxxxx 80:31669/TCP 23m
烧瓶的Dockerfile
# Dockerfile to build glpk container images
# Based on Ubuntu
# Set the base image to Ubuntu
FROM ubuntu:latest
# Switch to root for install
USER root
# Install wget
RUN apt-get update -y && apt-get install -y \
wget \
build-essential \
python3 \
python3-pip \
python3.6-dev \
--no-install-recommends \
&& rm -rf /var/lib/apt/lists/*
RUN pip3 install setuptools Cython numpy wheel
RUN pip3 install uwsgi
# Create a user
ENV HOME /home/user
RUN useradd --create-home --home-dir $HOME user \
&& chmod -R u+rwx $HOME \
&& chown -R user:user $HOME
# switch back to user
WORKDIR $HOME
USER user
COPY . /usr/src/app
WORKDIR /usr/src/app
RUN pip3 install -r requirements.txt
RUN pip3 install .
RUN export LC_ALL=C.UTF-8
RUN export LANG=C.UTF-8
RUN export FLASK_APP=server
CMD ["uwsgi", "uwsgi.ini"]
我的nginx Dockerfile
# Use the Nginx image
FROM nginx
# Remove the default nginx.conf
RUN rm /etc/nginx/conf.d/default.conf
# Replace with our own nginx.conf
COPY nginx.conf /etc/nginx/conf.d/
现在,我的Kubernetes配置文件:
flask-deployment.yaml
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
annotations:
kompose.cmd: kompose convert
kompose.version: 1.17.0 (a74acad)
creationTimestamp: null
labels:
io.kompose.service: flask
name: flask
spec:
replicas: 1
strategy: {}
template:
metadata:
creationTimestamp: null
labels:
io.kompose.service: flask
spec:
containers:
- env:
- name: APP_NAME
value: fundamentalmodel
image: registry.azurecr.io/fundamentalmodel_flask
name: flask
resources: {}
ports:
- containerPort: 8080
restartPolicy: Always
status: {}
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
annotations:
kompose.cmd: kompose.exe convert
kompose.version: 1.17.0 (a74acad)
creationTimestamp: null
labels:
io.kompose.service: nginx
name: nginx
spec:
replicas: 1
strategy: {}
template:
metadata:
creationTimestamp: null
labels:
io.kompose.service: nginx
spec:
containers:
- image: registry.azurecr.io/fundamentalmodel_nginx
name: nginx
ports:
- containerPort: 80
resources: {}
restartPolicy: Always
status: {}
flask-service.yaml
apiVersion: v1
kind: Service
metadata:
labels:
name: flask
name: flask
spec:
type: NodePort
selector:
app: flask
ports:
- name: http
port: 8080
targetPort: 8080
apiVersion: v1
kind: Service
metadata:
annotations:
kompose.cmd: kompose.exe convert
kompose.version: 1.17.0 (a74acad)
creationTimestamp: null
labels:
io.kompose.service: nginx
name: nginx
spec:
type: LoadBalancer
ports:
- name: "80"
port: 80
targetPort: 80
selector:
io.kompose.service: nginx
status:
loadBalancer: {}
nginx-deployment.yaml
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
annotations:
kompose.cmd: kompose convert
kompose.version: 1.17.0 (a74acad)
creationTimestamp: null
labels:
io.kompose.service: flask
name: flask
spec:
replicas: 1
strategy: {}
template:
metadata:
creationTimestamp: null
labels:
io.kompose.service: flask
spec:
containers:
- env:
- name: APP_NAME
value: fundamentalmodel
image: registry.azurecr.io/fundamentalmodel_flask
name: flask
resources: {}
ports:
- containerPort: 8080
restartPolicy: Always
status: {}
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
annotations:
kompose.cmd: kompose.exe convert
kompose.version: 1.17.0 (a74acad)
creationTimestamp: null
labels:
io.kompose.service: nginx
name: nginx
spec:
replicas: 1
strategy: {}
template:
metadata:
creationTimestamp: null
labels:
io.kompose.service: nginx
spec:
containers:
- image: registry.azurecr.io/fundamentalmodel_nginx
name: nginx
ports:
- containerPort: 80
resources: {}
restartPolicy: Always
status: {}
nginx-service.yaml
apiVersion: v1
kind: Service
metadata:
labels:
name: flask
name: flask
spec:
type: NodePort
selector:
app: flask
ports:
- name: http
port: 8080
targetPort: 8080
apiVersion: v1
kind: Service
metadata:
annotations:
kompose.cmd: kompose.exe convert
kompose.version: 1.17.0 (a74acad)
creationTimestamp: null
labels:
io.kompose.service: nginx
name: nginx
spec:
type: LoadBalancer
ports:
- name: "80"
port: 80
targetPort: 80
selector:
io.kompose.service: nginx
status:
loadBalancer: {}
nginx.conf
server {
listen 80;
location / {
include uwsgi_params;
uwsgi_pass flask:8080;
}
}
uswgi.ini
[uwsgi]
wsgi-file = run.py
callable = app
socket = :8080
processes = 4
threads = 2
master = true
chmod-socket = 660
vacuum = true
die-on-term = true
我认为这里的解决方案是更改两个设置,即您的服务应该使用ClusterIP,因为NodePort服务于不同的用途(请阅读此处的更多内容): 您的UWSGI配置也应该指定0.0.0.0:8080
[uwsgi]
wsgi-file = run.py
callable = app
socket = 0.0.0.0:8080
processes = 4
threads = 2
master = true
chmod-socket = 660
vacuum = true
die-on-term = true
问题可能出在您的
nginx.conf
中。你能分享一下吗(关于flask应用程序的部分)?哦,是的,当然,我忘记发布了。我试图在nginx.conf中更改配置,但错误消息将更改为:[emerg]1#1:host not found in up“NEWVALUE”,位于/etc/nginx/conf.d/nginx.conf:7中。因此,nginx.conf似乎没有问题。只是一个问题,为什么要将服务类型设置为NodePort?