proxy-demo | Node.js 实现两种 WEB 代理的演示程序。 | Runtime Evironment library
kandi X-RAY | proxy-demo Summary
kandi X-RAY | proxy-demo Summary
Node.js 实现两种 WEB 代理的演示程序。
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QUESTION
version: '3.7'
services:
shinyproxy:
build: /home/administrator/shinyproxy
deploy:
replicas: 3
#placement:
#constraints:
#- node.hostname==node1
user: root:root
hostname: shinyproxy
image: localhost:5000/shinyproxy-example
networks:
- sp-example-net
volumes:
- type: bind
source: /var/run/docker.sock
target: /var/run/docker.sock
- type: bind
source: /home/administrator/shinyproxy/application.yml
target: /opt/shinyproxy/application.yml
ports:
- 4000:4000
mariadb:
image: mariadb
networks:
- sp-example-net
volumes:
- type: bind
source: /home/administrator/mariadbdata
target: /var/lib/mysql
environment:
MYSQL_ROOT_PASSWORD: root_password
MYSQL_DATABASE: keycloak
MYSQL_USER: keycloak
MYSQL_PASSWORD: password
deploy:
placement:
constraints:
- node.hostname==spm1anadev1
keycloak:
image: jboss/keycloak
networks:
- sp-example-net
volumes:
- type: bind
source: /home/administrator/certs/fullchain.pem
target: /etc/x509/https/tls.crt
- type: bind
source: /home/administrator/certs//privkey.pem
target: /etc/x509/https/tls.key
#- /theme/govuk-social-providers/:/opt/jboss/keycloak/themes/govuk-social-providers/
environment:
- PROXY_ADDRESS_FORWARDING=true
- KEYCLOAK_USER=myadmin
- KEYCLOAK_PASSWORD=mypassword
ports:
- 8443:8443
deploy:
placement:
constraints:
- node.hostname==node1
networks:
sp-example-net:
driver: overlay
attachable: true
...ANSWER
Answered 2020-Mar-02 at 19:56ShinyProxy is a stateful application
Stateful app = each shinyproxy container manages own state. So when you are logged in first replica, second/third replicas don't know about it -> they redirect browser to Keycloak. There is already opened IDP session, so Keycloak redirects with auth code response immediately. However that auth code can be processed by another container -> so there will be redirect again and again. Only because shinyproxies don't share single state, but each replica has own state.
If you need horizontal scaling, then use sticky session (e.g. traefik in front of Shinyproxy service - link), so each request will be processed by the same shinyproxy replica. Otherwise scale shinyproxy vertically (more CPU/mem resources).
QUESTION
Example code is available on https://github.com/baumgarb/reverse-proxy-demo The README.md explains how you can re-produce the issue if you clone the repo.
I have an API Gateway and a downstream service which returns todos (TodosAPI). A client goes through the API Gateway to access the downstream service.
The API Gateway is leveraging the http-proxy-middleware
package to proxy the requests. There are two implementations and the 2nd one is not working:
1. Global middleware in main.ts
which kicks in on path /api/v1/...
This approach works perfectly fine and it proxies all requests to the downstream service no matter what http method (GET, PUT, ...).
...ANSWER
Answered 2019-Nov-25 at 07:27I've finally figured out the problem. It seems to be related to the body parser. If I change the API Gateway to turn off the body parser the request is forwarded successfully.
So the solution was to replace
QUESTION
I'm using windows 10, with powershell as a command line.
I'm following a simple tutorial but unfortunately, I'm getting service exit with code Exit 127
with The system cannot find the path specified.
After running the command:
...ANSWER
Answered 2019-Jun-26 at 06:38Usually this happens on Docker for Mac or Docker for Windows if you haven't allocated enough RAM for your Docker VM
Check preferences -> advanced and try to add more RAM.
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