How to add custom plugin in kong

How to add custom plugin in kong. service: table: Service to which plugin is bound, if any. lua in which we will specify the configuration parameters that can be set by the user when configuring the plugin and handler. This feature allows you to map the the captured path to a specific Upstream URI via Lua code. Kong Gateway is a Lua application running in Nginx. Add plugins to objects in a decK file. Find any instances of the custom plugin that you want to delete, click on its action menu, then select Delete. I want to add some headers to my incoming rest api requests with kong gateway. conf in the image with the line plugins = bundled,{custom plugin} in it. Open Plugins from the side navigation. exit() in the access phase, no other plugin is executed in that phase, but the header_filter, body_filter, and log phases are still executed, along with their plugins. buffer(point) return true, point. The first plugin seemed a little more tricky to implement because kong. luarocks make Build the Plugin luarocks pack kong-check-x-header 1. This template was designed to work with the kong-pongo and kong-vagrant development environments. Go, Rust, Javascript or Python. yml the environment variable - KONG_PLUGINS=bundled,kong-jwt2header now I get a new exception which says that the plugin kong-jwt2header is enabled but not installed. All of this is powered by Kong Gateway — Kong’s lightweight, fast, and flexible API gateway. Or build your own in Lua, . The environment we're running uses Kong's declarative config capability. 0 instance with plugins installed like. This is super simple to do can be a very powerful tool. Feb 28, 2022 · Example docker file installing Plugin with lua. I set in docker_compose. Get started with the Request Transformer plugin. setupFlushHandler() local point = influxdb_point(ngx, conf) buffer. com/gateway/latest/plugin-development/pdk Jun 3, 2022 · The Kong Gateway is configured to start a Python plugin server and load all the plugins in the kong-py-plugin directory. KONG_PLUGINS: bundled,my-custom-plugin I want to add a upstream-timeout to one of my route like it's shown in the docs - name: upstream-timeout enabled: true route: my-route config: read_timeout: 2147483646 but when I do it I get Sep 5, 2019 · From what I gathered I need to do the following steps. In this example, we’ll edit two types of headers: headers set via a plugin (in this case, Rate Limiting ), and latency headers from Kong Gateway). route_id. The following guide shows you how set the plugin up in the access phase. For its configuration options , tell the plugin to check the exp value to verify that the access token has not expired. yml, and you should see a service defined that proxies to mockbin. Finally we can build our project by running mvn clean package. Questions 2. Jun 25, 2023 · How to add custom plugin in kong manager. The returned value is normalized to lowercase. At its core, Kong Gateway implements database abstraction, routing, and All logging plugins use the same table for logging. 8, it is possible to use kong. created_at: number: Creation time of the plugin configuration (seconds from epoch). i installed it with luarocks install {custom plugin} command. conf (or in the KONG_PLUGINS environment variable, since you can use env variables to change the process configuration). custom-plugin. The following guide shows you how to set up the Post-function plugin to adjust request header names. I followed the instructions for installing the plugin with luarocks but for the last step, I need to add my custom plugin the Kong’s configuration. Reload to refresh your session. services local routes = kong. Order of execution. it’s very easy to integrate and use. Feb 25, 2018 · @FraBle you can deploy you custom plugin on Lucrocks and install it into the container while provisioning the container. In DB-less mode , you configure Kong Gateway declaratively . schema. Apr 20, 2018 · I did everything on Linux Ubuntu. Custom plugins can also be developed by the Kong Community and Kong Gateway is a Lua application designed to load and execute Lua or Go modules, which we commonly refer to as plugins. In another episode, I will try to cover the details on how you could actually write such a custom plugin & also cover the various aspects which one needs to take care of while writing such custom code. 2-alpine. Pongo can be used for automated builds, testing and packaging for Kong custom plugins. While this works, it opens a window of Oct 31, 2022 · dev. Currently, it contains a single plugin file: py-geocode. request. This is an example compile command: Second, build a docker image. kind: Pod. get_forwarded_host () Returns the host component of the request’s URL or the value of the “host” header. I basically want to read in a JSON file volume mapped in the Kong container and do some stuff with it before it processes the request. 3. Therefore, the Admin API is mostly read-only. API documentation is a little different. As the name says, we Nov 19, 2019 · See if one of the instructions from Kong/kong-plugin-zipkin issue 5 (another plugin which depends on kong. I am looking to debug the request kong sends to the upstream and the response it receives. 0-1 May 26, 2021 · Enable the Plugin. If you have a lot of these, you might create multiple folders for different types of include file, or you might just create one folder called includes. TypeScript is also supported in the following ways: The PDK includes type definitions for PDK functions that allow type checking when developing plugins in TypeScript. protocols: table: The plugin will run on Sep 15, 2022 · Parting Notes. Custom plugins can also be developed by the Kong Community and Jul 27, 2022 · First, compile the plugin into an executable. If no selectors are given, the plugins are added to the top-level plugins array. consumer: table: Consumer to which plugin is bound when possible, if any. I do not see this plugin on kong manager UI. Copy this file to docker/plugins directory. This plugin performs the response transformation in the following order: remove → rename → replace → add → append. via Kong Manager: 1. Jan 3, 2023 · To get started, we need to configure Kong to run Python plugins. Custom Kong Image. - KONG_CUSTOM_PLUGINS=kong-jwt2header without success. conf init. basic-auth . This is the case because there is no database coordination between Kong nodes. Nov 1, 2022 · We are running kong (kong/kong-gateway:3. Mar 8, 2021 · Assuming Step On approves this request, it would then add this new client to the plugin. If using the KongPlugin object in Kubernetes, the field is plugin. py. Apr 26, 2022 · 3. Running below set of command to build, push, install and verify my plugin in Kong. It’s possible to customize the spans and add your own spans through the universal tracing PDK. Extend functionality with hundreds of plugins created by Kong and our community. I don’t know where I can add it and how I can restart Kong to use theses changes. Kong Gateway is a Lua application designed to load and execute Lua or Go modules, which we commonly refer to as plugins. Kong can be configured using a REST interface referred to as the Admin API . Well, I hope the above article has helped you to onboard on the nuances of provisioning a Kong’s custom plugin in Kubernetes. authenticators. 3 + kong-oidc plugin”ENV OIDC_PLUGIN_VERSION=1. The plugin must be runnable on linux. 4-1 is now installed in /usr/local (license: MIT) . vault. return. The following command creates a skeleton file to get you started: kong config -c kong. In this sessio Address every use case. Kong provides a set of standard Lua plugins that get bundled with Kong Gateway and Konnect. 1. In the real . Support by: Analytics & Monitoring. yakovlev_alexey. Global plugin: Plugin applies either to your entire environment, or if running Kong Gateway Enterprise, your entire workspace. if not value then. The instance name shows up in Kong Nov 3, 2021 · You signed in with another tab or window. This is an example Dockerfile that explains how to mount your plugin in the Kong Gateway image: we can install plugin using : luarocks install <plugin name> build your own custom docker image and use kong image as base docker image. RateLimit-Reset: 47. string. Nov 28, 2023 · I deleted the KongPlugin my-custom-plugin; I upgraded helm with an empty values. jar should be created in target folder. By default, the Kong image we deployed into our cluster includes no dependencies or handling for third-party Jan 27, 2022 · CI for Custom Plugins. db. 0 Kong is not able to find the custom plugin. based on this custom image i bootstrapped and run kong. Dec 28, 2023 · To create a custom plugin we will have to create two lua files i. Scopes. The plugins are added to all objects that match the selector expressions. Send a POST request to /consumers to add the store to Kong as a consumer: Next, add OAuth credentials for the store, which it will use when requesting authorization or tokens. routes local consumers = kong. route: table: Route to which plugin is bound, if any. Note: Official Kong Gateway images are configured to run as the nobody user. When I follow their example I am able to see the logs Apr 30, 2019 · I am using kong as an API gateway. Your suggestion may help, but I must be sure Sep 19, 2017 · Here are the steps to enable and use custom plugin in kong Env. Using Include Files. Set up the plugin. 0-SNAPSHOT. get_host(), this function also considers X-Forwarded-Host if it comes from a trusted source. Plugins can extend it by adding their own endpoints to accommodate custom entities or other personalized management needs. ly/3rYb9SV• Download and install Kong on Am All of them are accessible as Data Access Objects (DAOs), through the kong. EmailLinkAuthenticatorFactory. I am struggling to debug the requests that kong is making to upstreams. db global singleton: -- Core DAOs local services = kong. Apr 6, 2023 · In Kong, you can add the "Request Transformer" plugin to return custom headers. The below example of a Dockerfile can be used to create a custom image that has an additional CLI tool and some lua packages installed; FROM kong/kong-gateway:2. By reading the values. set_header(), this function doesn’t remove any existing headers with the same name. We are going to modify an already existing plugin named response-transformer and deck file add-plugins. An optional custom name to identify an instance of the plugin, for example basic-auth_my-service . In Kong, this means creating a consumer and provisioning OAuth credentials. com API group for storing configuration specific to Kong. See the following table for plugins and their compatible scopes: Sep 12, 2023 · Topic Replies Views Activity; Adding Custom in plugins in Kong Enterprise Edition version 3. Feb 1, 2024 · We are building some custom plugins and using them with Kong. Kong plugin template. Apr 10, 2021 · Hey everyone! Today we are building a custom Kong Gateway plugin with Go. 2 - Install hello-world plugin by using following steps ---. But now i found not much docu…. Feb 8, 2018 · Kong’s various logging plugins easily integrate with any open source log analytics system. Hi everyone! Currently, i am learning how to make a custom plugin with Lua. # Use the priviled root user to install new packages. So far, testing via Pongo has been working successfully, but in one case we need to use methods like kong. We'll cover all the steps to set up, configure and test the service — giving you the foundational knowledge needed to implement these tools independently. plugins. - DONE. Reduce time spent on writing redundant code and maintaining libraries with . Today we will be looking into adding the custom plugins and building the docker image. A typical example of this is the creation, retrieval, and deletion (commonly referred to as “CRUD operations”) of API keys. 0-alpine) with kong-manager (free mode) as docker container. Apr 8, 2021 · In this Kong Gateway for beginners guide, you’ll learn how to do the following. We are using Kong in our custom-services deployment system and we developed a new authentication plugin for Kong to suit our specific need. get() method to load custom environment variables Ref: https://docs. lua which will contain the actual logic of your Kong plugin defining how Kong should handle requests and responses when the plugin is applied. I hope you enjoy :)Useful L Apr 5, 2022 · Edit 1. In the kong admin UI, I set these parametes : config. *. then added a kong. Plugins written in TypeScript can be loaded directly to Kong Gateway and Mar 6, 2021 · Kong provides the options to install the various varieties of the plugins to run for features like Rate-limiting, OIDC, JWT, Acme, and many more. get_forwarded_ip() which requires Nginx configuration directives like real_ip_header and trusted_ips to be set correctly before running our integration tests. Yes, but by using mock I want to emulate upstream service behavior that is supposed to return custom header. headers. Kong Gateway is distributed along with OpenResty, which is a bundle of modules that extend the lua-nginx-module. Instead, several occurrences of the header will be present in the request. Instantly applying authentication, API When a client has been authenticated, the plugin appends some headers to the request before proxying it to the upstream service, so that you can identify the consumer in your code: X-Consumer-ID: The ID of the consumer in Kong. Oct 4, 2023 · Building a Go plugin is easy, as you need to follow the signature proposed by Kong's plugin development kit or PDK, but it is easy to understand. This command creates a kong. 0 Kong custom plugin does not work for service specific The library provides a plugin server that provides a runtime for JavaScript bindings for Kong Gateway. Ensure operational resilience. Name of the plugin, e. But now I would like to export this plugin for a Kong contained in a Docker. X-Consumer-Username: The username of the consumer (if set). The gist of it is that the plugin should be available to Kong on disk, and added to the custom_plugins configuration property. Create a ConfigMap. kong. Third-party or Community plugin : A custom plugin developed, maintained, and supported by an external developer, not by Kong. Aug 21, 2023 · I have a kong 3. In this example, the plugin will look for a request matching x-custom-auth. NAME DATA AGE. You signed out in another tab or window. Oct 2, 2019 · build your own custom docker image and use kong image as base docker image. Configuration reference; Basic configuration example; Learn how to use the plugin Feb 5, 2021 · I am attempting to use Kong's API Gateway, however, I want to use its serverless plugin to add some custom implementation before Kong processes the request. # The plugin code should be present in ConfigMap or Secret inside the same. lua with the following content: Jun 11, 2018 · ApiStats. Boost developer productivity. If you have source code of your plugin then move into it and execute the command --- "luarocks make". X-RateLimit-Remaining-Minute: 9. konghq. If using the Kong Admin API, Konnect API, declarative configuration, or decK files, the field is name. Validate the code. log instead of breakhere() (wondering if your plugin is even executing this file)? If you are editing the files and looking for immediate feedback, you will need to restart Kong with each code Mar 27, 2017 · You signed in with another tab or window. My configuration for the plugins is similar to this (note: I'm using Kong in DB-less mode): In this video I am going to show you how to use third party Lua plugin with Kong. $ kubectl get configMap. org: services: - name: example-service. FROM kong:latest USER root RUN apk update && apk add git unzip luarocks RUN luarocks install kong-oidc USER kong by this way also you can add some of the community plugin and enterprise plugin in docker. test-custom-plugin 2 26h. 25. com/If you ha Jun 30, 2021 · I am trying to load a custom plugin in Kong. it will install your plugin. yml file: Here, you can add the plugin named jwt and attach it to your service called my-api-server. Jan 30, 2019 · Kubernetes. Subsequent phases will still be invoked. Both core entities from Kong and custom entities from plugins are available through kong. How can I see my custom plugin and enable it for a service or route? In this video, we'll walk through how to secure a service (in this case, an API server) with Kong Gateway and its JWT plugin. 0. View the full tutorial on our blog. consumers local plugins = kong. here whole example working Dockerfile. yml file that is available in the Helm charts for kong, I've come across this: # Custom Kong plugins can be loaded into Kong by mounting the plugin code. Here’s an example header: RateLimit-Limit: 6. instance_name. The set of plugins you have access to depends on your license tier. To create a custom image using the standard Kong image as a base, it is necessary to create a Dockerfile. The plugin lets you match portions of incoming requests using regular expressions, save those matched strings into variables, and substitute the strings into transformed requests via flexible templates. Feb 16, 2021 · To add the JWT plugin, add a “plugins” definition to your kong. To demonstrate that, we will build a plugin that will read a request header and set a new response header. When building a custom image, to copy files into the Kong Gateway image, you must temporarily set the user to root. For example, if you configure fields via custom_fields_by_lua in File Log, those same fields will appear in Kafka Log, since File Log executes first. I have tried using the syslog plugin, but that only logs the request kong receives and the response it sends back to the client. If more than one time limit is set, the header contains all of these: Calling kong. If the header exists in the request, it lets the request through. You switched accounts on another tab or window. Custom plugins can be added to the ingress controller via volume mounts and environment variable configuration. g. but after this configuration , kong gives me a empty value. Please check out those repos README files for usage instructions. The plugin files have the following format (JSON or YAML) and are applied in the order they are given: { "_format_version": "1. When running Kong Gateway in DB-less mode ANSWER. The following is an example for adding a custom span using Kong Gateway’s serverless plugin: Create a file named custom-span. A file with the name of keycloak-email-link-auth-plugin-1. In this article I’m going to show you how you can get stared with developing custom plugins for Kong. 0–1 USER root RUN apk update && apk add git unzip luarocks RUN luarocks install kong-oidc RUN git clone — branch 20200505-access-token-processing Nov 14, 2023 · My company purchased Kong last month, and I’ve been learning Lua to implement all the customizations that we need. response. 3-alpine LABEL description=”Alpine + Kong 2. Unlike kong. To load entities into DB-less Kong, you need a declarative configuration file. RateLimit-Remaining: 4. e. In your Dockerfile, use kong-gateway as base image and copy the executable into the container: Run docker build command to build the kong-with-plugin-image: Welcome to Kong Plugin Hub Add and manage custom Lua functions to run before other plugins. headers: myheader: $ (consumer_id) myheader is a name for new header and I want to set variable of consumer_id value in these header. Click Add Plugin from the Plugins page. key-auth. add_header (header, value) Adds a request header with the given value to the request to the Service. 1 - Add custom plugin name in --- custom_plugins = hello-world. This sets the foundations for a modular architecture, where plugins can be enabled and executed at runtime. yaml; I created a new ConfigMap kong-plugin-myheader with the new code (see below "after"); I created a new KongPlugin my-custom-plugin; I sent another request, but still see the same log message (therefore I'm guessing the custom plugin was not updated). All of this works well and we tested it doing this: Register a new API (service) Make a POST request to enabled the authentication plugin on the new API. A few custom resources are bundled with the Kong Ingress Controller to configure settings that are specific to Kong and provide fine-grained control over the proxying behavior. View the full tutorial on our b Transform client requests before they reach the upstream server. apiVersion: v1. Plugins can be scoped or global (without scope): Scoped plugin: Plugin applied to a specific service, route, or consumer. The Admin API for each Kong node functions independently, reflecting the memory state of that particular Kong node. The equivalence of the log server is determined by the parameters http_endpoint, method, content_type, timeout, and keepalive. AppDynamics. yml file for performing CI using Kong: Run pongo up and pongo build to bring up the pongo dependencies; Run pongo lint to check for static errors; Run pongo run to run Kong plugins are the real muscle behind the Kong ecosystem, giving you the power to implement API gateway policies in a plug and play fashion. We have coded a custom plugin that we do install in the running kong container through the below commands. conf file to /etc/kong/kong. I installed the plugin using luarocks make which gave me an output kong-circuit-breaker 1. This repository contains a very simple Kong plugin template to get you up and running quickly for developing your own plugins. If you set custom_fields_by_lua in one plugin, all logging plugins that execute after that plugin will also use the same configuration. 0 Jul 28, 2021 · The first step should be to register the custom plugin to kong and the next step is add the custom plugin to the specific route. Install Kong Gateway: https://bit. Dec 15, 2022 · 4. The OpenTelemetry plugin is built on top of the Kong Gateway tracing PDK. By Kong Inc. are you getting logs when you run ngx. add. You can find the blog post in the video at https://tech. The first thing to do is define both constants: version and priority. shahamit October 31, 2022, 1:47pm 1. For the example described above and assuming a RegEx path capture group named route_id, then the code would look something like this; local value = uri_captures. The plugin also sends headers to show the time limit and the minutes still available: X-RateLimit-Limit-Minute: 10. yml file in the current directory, containing examples of the syntax for declaring entities and their relationships. The Kong plugin template consists of a reference travis. Another option as you develop your plugin is to create extra PHP files, known as include files. handler itself. Konnect helps simplify multi-cloud API management by: Offering the control plane to deploy and manage your APIs and microservices in any environment: cloud, on-premises, Kubernetes, and virtual machines. Add the field that you want to add or modify in the UI (e. FROM kong:latest USER root RUN apk update && apk add git unzip luarocks RUN luarocks install kong-oidc USER kong In contrast to other plugins that use queues, it shares one queue between all plugin instances that use the same log server parameter. The Rate Limiting plugin returns headers such as X-RateLimit-Remaining-<time> and X Jul 2, 2021 · I want to implement a simple redirect using Kong's request-termination & response-transformer plugins. # into the file-system of Kong container. # namespace as Kong is being installed. Jun 29, 2022 · i created a Dockerfile based on kong:2. Open up config/kong. aufomm. In addition to the basic functionality available in the open-source Request For example if you want to "mask" the value of an apikey header when requests are logged using the file-log plugin, you can configure the custom_fields_by_lua the following way: A. service. All plugin instances that have the same values for these parameters share one queue. This will increase the size of the image - if you find any other alternatives to bring back the size, please do respond here (I am looking for a solution) Mar 25, 2022 · Kong plugin : A plugin developed, maintained, and supported by Kong. The Kong Ingress Controller uses the configuration. keycloak. We start our plugin by importing the required Python libraries: #!/usr/bin/env python3. The plugin is being added in the plugins property of kong. browser. handler) would work for kong. 8. FROM kong:2. Note that these need to be added to both the kong Deployment and the ingress-kong Deployment, as the ingress controller uses a split deployment with separate Kong nodes for the admin API If you need to overwrite these header fields, see the Post-function plugin. Mount the volumes to the pods - No idea how to do this but I created the chart below. traines January 30, 2019, 7:44pm 2. request. If the header doesn’t exist, it terminates the request early. exit() interrupts the execution flow of plugins in the current phase. The plugins mostly works, but I have an issue with handling query parameters. Here is the document for creating the first plugin. To enable the plugin you would need to set KONG_PLUGINS env. apikey) and click "+ Add Config Fields By Lua" 2. authentication. Apr 5, 2019 · TL;DR. From Kong 2. Now if I try to restart my kong docker container and then restart kong, Kong runs successfully but this plugin is not loaded. Custom plugins can also be developed by the Kong Community and Aug 23, 2023 · The second plugin would allow kong to execute an arbitrary script with the arguments passed either via the URI or request headers. value-add plugins and an intuitive web UI. That means that we need to update the config file to enable our new plugin. X-Consumer-Custom-ID: The custom_id of the consumer (if set). Oct 31, 2022 · Installation/Setup. I choosing Lua because i think it’s have more references than another language and it will fit with Kong system. On the tile for your custom plugin, click the action menu in the corner, then select Delete. These CRDs allow users to declaratively configure all In this video, we’ll walk through how to secure a service (in this case, an API server) with Kong Gateway and its JWT plugin. import os. Mar 5, 2019 · To use a third-party plugin, you need to make sure that: Every Kong node in the cluster has the plugin installed on the file system. 0–0 ENV JWT_PLUGIN_VERSION=1. We are running kong (kong/kong-gateway:3. Open the Custom Plugins tab. Dec 18, 2023 · @cactus You need to create a custom image with the dependencies added. I do not want to use request transformer since it will continue to add custom header even when mock is disabled. One type of integration would be based on an OpenAPI specification (OAS - formerly known as Swagger) - I don’t have anything to announce at this time regarding Kong CE, API documentation, and OAS. client. For example, if a plugin calls kong. vi yn vm ls vz nu xr ng bz sr