将容器部署到AWS存储库后，将UWSGI容器与NGINX容器[Docker]连接
正在将两个容器uwsgi和nginx部署到AWS存储库。我正在使用fargate来部署和设置容器，但是在容器之间的连接和通信中出现了错误。
error:No host not found in upstream "flask_app" in /etc/nginx/conf.d/nginx.conf.Docker编写yml文件。
version: "3"
services:
db:
container_name: db
image: postgres
restart: always
environment:
POSTGRES_DB: XXXXX
POSTGRES_USER: XXXX
POSTGRES_PASSWORD: XXXXX
ports:
- "54321:5432"
flask_app:
container_name: flask_app
image: XXXXXXXXXXXXXXX.dkr.ecr.us-east-2.amazonaws.com/YYYYY:flask
build:
context: ./
dockerfile: ./docker/Dockerfile-flask
volumes:
- .:/app
depends_on:
- db
ports:
- 5000:5000
links:
- db
nginx:
container_name: nginx
image: XXXXXXXXXXXXXXX.dkr.ecr.us-east-2.amazonaws.com/YYYYY:backend
env_file:
- ./docker/users.variables.env
build:
context: .
dockerfile: ./docker/Dockerfile-nginx
ports:
- 8080:80
depends_on:
- flask_app
links:
- flask_app
Nginx (nginx.conf):
server {
listen 80;
server_name localhost;
root /usr/share/nginx/html;
location / {
resolver 169.254.169.253;
include uwsgi_params;
proxy_pass http://flask_app:5000/;
proxy_set_header Host "localhost";
}
}
UWSGI.ini:
[uwsgi]
protocol = http
; This is the name of our Python file
; minus the file extension
module = start
; This is the name of the variable
; in our script that will be called
callable = app
master = true
; Set uWSGI to start up 5 workers
processes = 5
; We use the port 5000 which we will
; then expose on our Dockerfile
socket = 0.0.0.0:5000
vacuum = true
die-on-term = trueS错误2019/08/23 12:27:13 emerg 1#1:在/etc/nginx/conf.d:8中上游"flask_app“中找不到主机
回答 1
Stack Overflow用户
发布于 2019-11-06 14:09:08
在您的示例中，您依赖于Docker中设置的容器名称(flask_app)与另一个容器进行通信。这对于Docker在本地环境中很好，但在使用Fargate的ECS中却不是这样。
使用Fargate的部署使用awsvpc网络模式。这允许这些容器通过本地主机相互通信，只要它们属于相同的任务--请参阅AWS文档：https://docs.aws.amazon.com/AmazonECS/latest/developerguide/task-networking.html。
如果您试图配置nginx反向代理侧服务器，那么这些容器将属于同一任务。我意识到下面的示例使用的是uwsgi原型，而不是http，但它确实演示了通过localhost进行通信(除非您必须使用http，否则可以轻松地修改您的配置以使用uwsgi)。下面是使用uwsgi协议作为Fargate部署的nginx和uwsgi的工作配置：
nginx.conf:
server {
listen 80;
server_name localhost 127.0.0.1;
root /usr/share/nginx/html;
location / {
include uwsgi_params;
uwsgi_pass localhost:5000;
}uwsgi.ini是这样的：
[uwsgi]
module = wsgi:app
uid = www-data
gid = www-data
master = true
processes = 3
socket=localhost:5000
vacuum = true
die-on-term = true(假设您使用端口5000，如您的示例所示)此配置将在您的本地环境中使用而不是，在您的本地环境中使用Docker和桥接网络，但是如果您在Linux上可以使用主机网络模拟它，可以在这里找到关于设置本地测试环境的说明：https://aws.amazon.com/blogs/compute/a-guide-to-locally-testing-containers-with-amazon-ecs-local-endpoints-and-docker-compose/
希望这能在某种程度上解决这个问题。
https://stackoverflow.com/questions/57626791
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