这是坚持技术写作计划（含翻译）的第48篇，定个小目标999，每周最少2篇。
本文主要是介绍如何使用Kong替换Zuul作为SpringCloud的网关。并解决自动从Eureka同步服务实例到Kong的问题。
安装Kong 和 kong-plugin-sync-eureka 插件
以docker安装为例，详细请参考 docs.konghq.com/install/doc…
创建 docker-compose.yml
version: '2'
services:
kong-plugins:
image: kong:latest
environment:
KONG_LUA_PACKAGE_PATH: /usr/local/custom/share/lua/5.1/?.lua;;
command:
- luarocks
- install
- --tree
- /usr/local/custom
- kong-plugin-sync-eureka
volumes:
- /data/kong/custom/:/usr/local/custom/
postgres:
image: postgres:11-alpine
environment:
POSTGRES_USER: root
POSTGRES_PASSWORD: root
POSTGRES_DB: kong
volumes:
- /data/postgresql/data:/var/lib/postgresql/data
kong-migration:
image: kong:latest
environment:
KONG_PG_HOST: postgres
KONG_PG_PASSWORD: root
KONG_PG_USER: root
KONG_LUA_PACKAGE_PATH: /usr/local/custom/share/lua/5.1/?.lua;;
command:
- kong
- migrations
- bootstrap
volumes:
- /data/kong/custom/:/usr/local/custom/
depends_on:
- postgres
kong:
image: kong:latest
environment:
KONG_PG_HOST: postgres
KONG_PG_PASSWORD: root
KONG_PG_USER: root
KONG_ADMIN_LISTEN: 0.0.0.0:9001
KONG_PROXY_LISTEN: 0.0.0.0:9000
KONG_PROXY_LISTEN_SSL: 0.0.0.0:9443
KONG_LUA_PACKAGE_PATH: /usr/local/custom/share/lua/5.1/?.lua;;
KONG_PLUGINS: bundled,sync-eureka
volumes:
- /data/kong/custom/:/usr/local/custom/
- /data/kong/logs/:/usr/local/kong/logs/
depends_on:
- postgres
- kong-migration
- kong-plugins
ports:
- 9000:9000/tcp
- 9001:9001/tcp
docker-compose ps
Name Command State Ports
--------------------------------------------------------------------------------------------------------------------------------------------------------
kong_kong-migration_1 /docker-entrypoint.sh kong ... Exit 0
kong_kong-plugins_1 /docker-entrypoint.sh luar ... Exit 0
kong_kong_1 /docker-entrypoint.sh kong ... Up 8000/tcp, 8001/tcp, 8443/tcp, 8444/tcp, 0.0.0.0:9000->9000/tcp, 0.0.0.0:9001->9001/tcp
kong_postgres_1 docker-entrypoint.sh postgres Up 5432/tcp
启用插件
$ curl -H "Content-Type: application/json" -X POST --data '{"config":{"sync_interval":10,"eureka_url":"http://eureka_server/eureka","clean_target_interval":86400},"name":"sync-eureka"}' http://localhost:9001/plugins
$ docker-compose restart kong
## 重启使插件生效
## 稍等10秒钟左右，访问services查看是否同步生效
$ curl http://localhost:9001/services
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