我正在尝试保护 kubernetes 上的 java 应用程序。
对于一个带有 permitAll 的简单 Springboot 应用程序,我选择了带有 lua-resty-openidc 的 openresty (nginx) 作为反向代理。
一个例子主要说明了我正在尝试做的事情:https ://medium.com/@lukas.eichler/securing-pods-with-sidecar-proxies-d84f8d34be3e
它在 localhost 中“有效”,但在 kubernetes 上无效。
这是我的 nginx.conf :
worker_processes 1;
error_log logs/error.log;
error_log logs/error.log notice;
error_log logs/error.log debug;
events {
worker_connections 1024;
}
http {
lua_package_path '~/lua/?.lua;;';
resolver ${dns.ip};
lua_ssl_trusted_certificate /ssl/certs/chain.pem;
lua_ssl_verify_depth 5;
lua_shared_dict discovery 1m;
lua_shared_dict jwks 1m;
lua_shared_dict introspection 10m;
lua_shared_dict sessions 10m;
include mime.types;
default_type application/octet-stream;
sendfile on;
keepalive_timeout 65;
server {
server_name localhost;
listen 80;
location /OAuth2Client {
access_by_lua_block {
local opts = {
discovery = "${openam-provider}/.well-known/openid-configuration",
redirect_uri = "http://localhost:8080/OAuth2Client/authorization-code/callback",
client_id = "myClientId",
client_secret = "myClientSecret",
scope = "openid profile email",
}
local res, err = require("resty.openidc").authenticate(opts)
if err then
ngx.status = 500
ngx.say(err)
ngx.exit(ngx.HTTP_INTERNAL_SERVER_ERROR)
end
ngx.req.set_header("Authorization", "Bearer " .. res.access_token)
ngx.req.set_header("X-USER", res.id_token.sub)
}
proxy_pass http://localhost:8080/OAuth2Client;
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
}
}
所以在本地,当我的 nginx 和我的 springboot 应用程序在本地主机上运行时,重定向正在工作。
现在,当我使用它在 kubernetes 上部署它时,浏览器不会将 localhost 与内部容器 ip 映射。
apiVersion: apps/v1
kind: Deployment
metadata:
name: oauth2-client-deployment
spec:
selector:
matchLabels:
app: OAuth2Client
replicas: 2
template:
metadata:
labels:
app: OAuth2Client
spec:
#hostAliases:
#- ip: "127.0.0.1"
# hostnames:
# - "oauth2-client.local"
containers:
- name: oauth2-client-container
image: repo/oauth2-client-springboot:latest
env:
- name: SPRING_PROFILES_ACTIVE
value: dev
envFrom:
- secretRef:
name: openam-client-secret
- secretRef:
name: keystore-java-opts
volumeMounts:
- name: oauth2-client-keystore
mountPath: "/projected"
readOnly: true
ports:
- containerPort: 8080
- name: oauth2-sidecar
image: repo/oauth2-sidecar:latest
ports:
- containerPort: 80
volumes:
- name: oauth2-client-keystore
projected:
sources:
- secret:
name: keystore-secret
items:
- key: keystore.jks
path: keystore.jks
- secret:
name: truststore-secret
items:
- key: truststore.jks
path: truststore.jks
imagePullSecrets:
- name: regcred
---
apiVersion: v1
kind: Service
metadata:
name: oauth2-client-service-sidecar
spec:
selector:
app: OAuth2Client
ports:
- protocol: TCP
port: 80
targetPort: 80
type: LoadBalancer
那么我如何映射这个 localhost 呢?我不希望应用程序容器被暴露,因为它没有安全性,这就是为什么我使用 nginx 作为 sidecar 并且服务只针对它。如何告诉 nginx redirect_uri 和 proxypass 到应用程序容器 ip ?
和附属问题:由于 nginx 不接受 env 变量,我应该如何使其通用,所以应用程序可以提供自己的 redirect_uri 应该在 nginx.conf 中使用?
另一个附属问题:命令 ngx.req.set_header("Authorization", "Bearer" .. res.access_token) 似乎不起作用,因为我在我的应用程序的请求中没有看到任何授权标头...