KONG is a api gateway placed above the microservices aimed to managing the APIs and interactions external and internal with them in a more rational, efficient, safe and "easy" way, helping the developer in the separation between public and private APIs, improving their performance , facilitating monitoring etc ...
Some Characteristic:
- Built on NGINX
- For the most part written in LUA
- Expandable via many Plugins
- It supports two types of Datastores, which can also be used simultaneously (Postgres, cassandra)
Advantages:
- Easy management of APIs in a Microservice architecture
- helps in the separation between Public and Private APIs
- allows to measure and possibly limit the use of these APIs.
- Improves performance / through the use of caching etc ...)
- Expandable through many plugins
The best way for move the fists step with KONG is using docker:
first, create and internal network for the dockers:
docker network create kong-net
create a container for cassandra db:
docker run -d --name kong-cassandra-database \
--network=kong-net \
-p 9042:9042 \
cassandra:3
create a postgre sql container:
docker run -d --name kong-postgres-database \
--network=kong-net \
-p 5432:5432 \
-e "POSTGRES_USER=kong" \
-e "POSTGRES_DB=kong" \
postgres:9.6
create a migration:
docker run --rm \
--network=kong-net \
-e "KONG_DATABASE=postgres" \
-e "KONG_PG_HOST=kong-postgres-database" \
-e "KONG_CASSANDRA_CONTACT_POINTS=kong-postgres-database" \
kong:latest kong migrations up
create a kong container connected to the postgres and cassandra databases throught the internal network kong-net:
docker run -d --name kong \
--network=kong-net \
-e "KONG_DATABASE=postgres" \
-e "KONG_PG_HOST=kong-postgres-database" \
-e "KONG_CASSANDRA_CONTACT_POINTS=kong-cassandra-database" \
-e "KONG_PROXY_ACCESS_LOG=/dev/stdout" \
-e "KONG_ADMIN_ACCESS_LOG=/dev/stdout" \
-e "KONG_PROXY_ERROR_LOG=/dev/stderr" \
-e "KONG_ADMIN_ERROR_LOG=/dev/stderr" \
-e "KONG_ADMIN_LISTEN=0.0.0.0:8001, 0.0.0.0:8444 ssl" \
-p 8000:8000 \
-p 8443:8443 \
-p 8001:8001 \
-p 8444:8444 \
kong:latest
check on url http://localhost:8001/
For more info, go on official web site here
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