Error "error loading plugin schemas: on plugin <my-plugin>: <my-plugin> plugin is enabled but not installed" with Python plugin for kong

[AlleMartins]

Is there an existing issue for this?

• [X] I have searched the existing issues

Kong version ($ kong version)

Kong 3.6

Current Behavior

Using kong version 3.6, I am encountering when running the kong image "error loading plugin schemas: on plugin : plugin is enabled but not installed". The plugin is implemented with Python 3.12.3, I am using the python plugin present in this link as a plugin: https://github.com/Kong/kong-plugin-py-geocode/tree/main/kong-py-plugins. My docker-compose.yml is as follows: version: '3.9' x-kong-config: &kong-env KONG_DATABASE: ${KONG_DATABASE:-postgres} KONG_PG_DATABASE: ${KONG_PG_DATABASE:-kong} KONG_PG_HOST: db KONG_PG_USER: ${KONG_PG_USER:-kong} KONG_PG_PASSWORD_FILE: /run/secrets/kong_postgres_password

volumes: kong_data: {} kong_prefix_vol: driver_opts: type: tmpfs device: tmpfs kong_tmp_vol: driver_opts: type: tmpfs device: tmpfs

networks: kong-net: external: false

services: kong-migrations: image: "${KONG_DOCKER_TAG:-kong:latest}" command: kong migrations bootstrap profiles: [ "database" ] depends_on: - db environment: <<: *kong-env secrets: - kong_postgres_password networks: - kong-net restart: on-failure

kong-migrations-up: image: "${KONG_DOCKER_TAG:-kong:latest}" command: kong migrations up && kong migrations finish profiles: [ "database" ] depends_on: - db environment: <<: *kong-env secrets: - kong_postgres_password networks: - kong-net restart: on-failure

kong: build: context: . dockerfile: Dockerfile.kong #image: "${KONG_DOCKER_TAG:-kong:latest}" user: "${KONG_USER:-kong}" environment: <<: *kong-env KONG_ADMIN_ACCESS_LOG: /dev/stdout KONG_ADMIN_ERROR_LOG: /dev/stderr KONG_PROXY_LISTEN: "${KONG_PROXY_LISTEN:-0.0.0.0:8000}" KONG_ADMIN_LISTEN: "${KONG_ADMIN_LISTEN:-0.0.0.0:8001}" KONG_ADMIN_GUI_LISTEN: "${KONG_ADMIN_GUI_LISTEN:-0.0.0.0:8002}" KONG_PROXY_ACCESS_LOG: /dev/stdout KONG_PROXY_ERROR_LOG: /dev/stderr KONG_PREFIX: ${KONG_PREFIX:-/var/run/kong} KONG_DECLARATIVE_CONFIG: "/opt/kong/kong.yaml" KONG_LOG_LEVEL: "info" KONG_PLUGINS: "bundled, my_plugin, python_plugin" #KONG_CUSTOM_PLUGINS: python_plugin KONG_PLUGINSERVER_NAMES: python_plugin KONG_PLUGINSERVER_PY_START_CMD: >- /usr/local/bin/kong-python-pluginserver --plugins-directory /usr/local/share/lua/5.1/kong/plugins/python_plugin --dump KONG_PLUGINSERVER_PY_QUERY_CMD: >- /usr/local/bin/kong-python-pluginserver --plugins-directory /usr/local/share/lua/5.1/kong/plugins/python_plugin --dump secrets: - kong_postgres_password networks: - kong-net ports: # The following two environment variables default to an insecure value (0.0.0.0) # according to the CIS Security test. - "${KONG_INBOUND_PROXY_LISTEN:-0.0.0.0}:8000:8000/tcp" - "${KONG_INBOUND_SSL_PROXY_LISTEN:-0.0.0.0}:8443:8443/tcp" # Making them mandatory but undefined, like so would be backwards-breaking: # - "${KONG_INBOUND_PROXY_LISTEN?Missing inbound proxy host}:8000:8000/tcp" # - "${KONG_INBOUND_SSL_PROXY_LISTEN?Missing inbound proxy ssl host}:8443:8443/tcp" # Alternative is deactivating check 5.13 in the security bench, if we consider Kong's own config to be enough security here

  - "127.0.0.1:8001:8001/tcp"
  - "127.0.0.1:8444:8444/tcp"
  - "127.0.0.1:8002:8002/tcp"
healthcheck:
  test: [ "CMD", "kong", "health" ]
  interval: 10s
  timeout: 10s
  retries: 10
restart: on-failure:5
read_only: true
volumes:
  - kong_prefix_vol:${KONG_PREFIX:-/var/run/kong}
  - kong_tmp_vol:/tmp
  - ./config:/opt/kong
security_opt:
  - no-new-privileges

db: image: postgres:9.5 profiles: [ "database" ] environment: POSTGRES_DB: ${KONG_PG_DATABASE:-kong} POSTGRES_USER: ${KONG_PG_USER:-kong} POSTGRES_PASSWORD_FILE: /run/secrets/kong_postgres_password secrets: - kong_postgres_password healthcheck: test: [ "CMD", "pg_isready", "-d", "${KONG_PG_DATABASE:-kong}", "-U", "${KONG_PG_USER:-kong}" ] interval: 30s timeout: 30s retries: 3 restart: on-failure stdin_open: true tty: true networks: - kong-net volumes: - kong_data:/var/lib/postgresql/data

secrets: kong_postgres_password: file: ./POSTGRES_PASSWORD

and my dockerfile.kong is as follows:
FROM kong:3.6

USER root

RUN apt-get update &&
apt-get install -y python3 python3-pip python3-dev libffi-dev gcc g++ make &&
PYTHONWARNINGS=ignore pip3 install kong-pdk geopy

COPY ./kong-python-pdk /opt/kong-python-pdk

COPY --chown=kong --chmod=555 ./kong-python-pdk/kong-pluginserver.py /usr/local/bin/kong-python-pluginserver

COPY custom_plugins/python_plugin /usr/local/share/lua/5.1/kong/plugins/python_plugin

COPY custom_plugins/my_plugin /usr/local/share/lua/5.1/kong/plugins/my_plugin

RUN chown -R kong:kong /usr/local/share/lua/5.1/kong/plugins/my_plugin

RUN chown -R kong:kong /usr/local/share/lua/5.1/kong/plugins/python_plugin

USER kong

ENV KONG_PLUGINS="bundled, my_plugin, python_plugin"

EXPOSE 8000 8443 8001 8444

CMD ["kong", "docker-start"]

the name of my embedded server is python_plugin, and to run everything I run the shell command: set KONG_DATABASE=postgres && docker-compose --profile database up --build
but when the command is executed, the previously mentioned error returns. Leaving aside my first plugin written in lua (working), my directory tree is as follows: /usr/local/ ├── bin/ │ └── kong-python-pluginserver # Script per avviare il server del plugin └── share/ └── lua/ └── 5.1/ └── kong/ └── plugins/ ├── python_plugin/ # Directory per il plugin Python │ └── prova_plugin.py # Codice del plugin Python └── my_plugin/ # Directory per altri plugin Lua personalizzati └── handler.lua and schema.lua # Codice del plugin Lua

finally, my kong.yaml is as follows: _format_version: "2.1" _transform: true What do I need to change? From the documentation provided, it appears that kong cannot find my python code, but although everything seems fine, it still doesn't work (https://support.konghq.com/support/s/article/plugin-is-enabled- but-not-installed)

Expected Behavior

No response

Steps To Reproduce

1. download the images for docker: https://github.com/Kong/kong?tab=readme-ov-file
2. modify the docker-compose.yml and create in the same directory dockerfile.kong
3. add in the same directory as docker-compose.yml e dockerfile.kong kong-python-pdk (present in this link: https://github.com/Kong/kong-plugin-py-geocode/tree/main/kong-py-plugins )
4. modify the tree of directory like me

Anything else?

No response

[Smuggla]

The plugin server is just an instance that runs your python. In your config it is python_plugin but also config'd a server named py. Two fixes are

KONG_PLUGINSERVER_NAMES: py
KONG_PLUGINSERVER_PY_START_CMD: >-
/usr/local/bin/kong-python-pluginserver
--plugins-directory /usr/local/share/lua/5.1/kong/plugins/python_plugin
--dump
KONG_PLUGINSERVER_PY_QUERY_CMD: >-
/usr/local/bin/kong-python-pluginserver
--plugins-directory /usr/local/share/lua/5.1/kong/plugins/python_plugin
--dump

or

KONG_PLUGINSERVER_NAMES: python_plugin
KONG_PLUGINSERVER_PYTHON_PLUGIN_START_CMD: >-
/usr/local/bin/kong-python-pluginserver
--plugins-directory /usr/local/share/lua/5.1/kong/plugins/python_plugin
--dump
KONG_PLUGINSERVER_PYTHON_PLUGIN_QUERY_CMD: >-
/usr/local/bin/kong-python-pluginserver
--plugins-directory /usr/local/share/lua/5.1/kong/plugins/python_plugin
--dump

Kong will get the plugin name when the pluginserver starts.

[AlleMartins]

After applying your change, therefore changing the name of the embedded server, with py, I get this error: "[error] init_by_lua error: ...al/share/lua/5.1/kong/runloop/plugin_servers/ process.lua:145: Not a plugin info table: kong-1 | /usr/local/bin/kong-python-pluginserver --plugins-directory /usr/local/share/lua/5.1/kong/plugins/python_plugin --dump" I will now attach the important codes of the project, and the logs error (the unspecified settings are like the previous ones said, in the previous commit)

[AlleMartins]

I also add on-board information which may be relevant: my version of kong is the community version, not the enterprise version, I also looked at this link, because it dealt with a similar problem but with the Go programming language: https://support. konghq.com/support/s/article/Golang-custom-plugin-throwing-not-a-plugin-info-table-and-error-loading-plugin-schemas-no-plugin-found, also I changed the name of the my python plugin from "prova_plugin.py" to "python_plugin.py"

[fffonion]

Use --dump-all-plugins instead of --dump if you are using embedded plugin server (i.e. not dedicated server).

[AlleMartins]

After I apply your change, this "info" appears, the image continues to run, but if I try to access the website (I created a small server with Flask) it doesn't work, so I assume it's an error. The image continues to work, in fact if I do: curl -i GET http://localhost:8001/plugins/enabled it is present, and if I try to activate it it works too

[StarlightIbuki]

Please ensure you have py-pdk correctly installed. pip3 install kong-pdk in case it's not installed.

[github-actions[bot]]

This issue is marked as stale because it has been open for 14 days with no activity.

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