Lab - Coco Pharmaceuticals (odpi-egeria-lab)¶
This example is intended to replicate the metadata landscape of a hypothetical company, Coco Pharmaceuticals, and allow you to understand a little more about how Egeria can help, and how to use it. This forms our 'Hands on Lab'.
The Helm chart will deploy the following components, all in a self-contained environment, allowing you to explore Egeria and its concepts safely and repeatably:
- Multiple Egeria servers
- Apache Kafka (and its Zookeeper dependency)
- Example Jupyter Notebooks
- Jupyter runtime
- Egeria's React based UI
In order to use the labs, you'll first need to have the following installed:
- Kubernetes 1.15 or above
- Helm 3.0 or above
- Egeria chart repository configured & updated
6GB RAM minimum is recommended for your k8s environment.
You no longer need a git clone of this repository to install the chart.
helm repo add egeria https://odpi.github.io/egeria-charts helm repo update helm install [-f overrides.yaml] <name> egeria/odpi-egeria-lab
$ helm install lab egeria/odpi-egeria-lab NAME: lab LAST DEPLOYED: Tue Aug 10 11:47:19 2021 NAMESPACE: default STATUS: deployed REVISION: 1 TEST SUITE: None NOTES: ODPi Egeria lab tutorial ---
It can take a few seconds for the various components to all spin-up. You can monitor
the readiness by running
kubectl get all -- when ready, you should see output like the following:
$ kubectl get all NAME READY STATUS RESTARTS AGE pod/lab-odpi-egeria-lab-ui-74cc464575-cf8rm 1/1 Running 0 126m pod/lab-odpi-egeria-lab-datalake-0 1/1 Running 0 126m pod/lab-odpi-egeria-lab-nginx-7b96949b4f-7dff4 1/1 Running 0 126m pod/lab-odpi-egeria-lab-presentation-bd9789747-rbv69 1/1 Running 0 126m pod/lab-kafka-0 1/1 Running 0 126m pod/lab-zookeeper-0 1/1 Running 0 126m pod/lab-odpi-egeria-lab-dev-0 1/1 Running 0 126m pod/lab-odpi-egeria-lab-uistatic-7b98d4bf9b-sf9bj 1/1 Running 0 126m pod/lab-odpi-egeria-lab-core-0 1/1 Running 0 126m pod/lab-odpi-egeria-lab-factory-0 1/1 Running 0 126m pod/lab-odpi-egeria-lab-jupyter-77b6868c4-9hnlp 1/1 Running 0 126m NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE service/kubernetes ClusterIP 10.152.183.1 <none> 443/TCP 20h service/lab-kafka-headless ClusterIP None <none> 9092/TCP,9093/TCP 126m service/lab-zookeeper-headless ClusterIP None <none> 2181/TCP,2888/TCP,3888/TCP 126m service/lab-zookeeper ClusterIP 10.152.183.25 <none> 2181/TCP,2888/TCP,3888/TCP 126m service/lab-jupyter ClusterIP 10.152.183.172 <none> 8888/TCP 126m service/lab-core ClusterIP 10.152.183.248 <none> 9443/TCP 126m service/lab-nginx ClusterIP 10.152.183.155 <none> 443/TCP 126m service/lab-datalake ClusterIP 10.152.183.191 <none> 9443/TCP 126m service/lab-dev ClusterIP 10.152.183.122 <none> 9443/TCP 126m service/lab-kafka ClusterIP 10.152.183.79 <none> 9092/TCP 126m service/lab-odpi-egeria-lab-factory ClusterIP 10.152.183.158 <none> 9443/TCP 126m service/lab-uistatic ClusterIP 10.152.183.156 <none> 80/TCP 126m service/lab-presentation ClusterIP 10.152.183.61 <none> 8091/TCP 126m service/lab-ui ClusterIP 10.152.183.186 <none> 8443/TCP 126m NAME READY UP-TO-DATE AVAILABLE AGE deployment.apps/lab-odpi-egeria-lab-presentation 1/1 1 1 126m deployment.apps/lab-odpi-egeria-lab-nginx 1/1 1 1 126m deployment.apps/lab-odpi-egeria-lab-ui 1/1 1 1 126m deployment.apps/lab-odpi-egeria-lab-uistatic 1/1 1 1 126m deployment.apps/lab-odpi-egeria-lab-jupyter 1/1 1 1 126m NAME DESIRED CURRENT READY AGE replicaset.apps/lab-odpi-egeria-lab-presentation-bd9789747 1 1 1 126m replicaset.apps/lab-odpi-egeria-lab-nginx-7b96949b4f 1 1 1 126m replicaset.apps/lab-odpi-egeria-lab-ui-74cc464575 1 1 1 126m replicaset.apps/lab-odpi-egeria-lab-uistatic-7b98d4bf9b 1 1 1 126m replicaset.apps/lab-odpi-egeria-lab-jupyter-77b6868c4 1 1 1 126m NAME READY AGE statefulset.apps/lab-odpi-egeria-lab-dev 1/1 126m statefulset.apps/lab-zookeeper 1/1 126m statefulset.apps/lab-kafka 1/1 126m statefulset.apps/lab-odpi-egeria-lab-core 1/1 126m statefulset.apps/lab-odpi-egeria-lab-datalake 1/1 126m statefulset.apps/lab-odpi-egeria-lab-factory 1/1 126m
All of the
pod/... listed at the top have
Running as their
Accessing the Jupyter notebooks¶
We now need to get connectivity to the interesting pods, such as that running the Jupyer notebook server, as this is where you'll get to the examples.
Since k8s implementations vary one simple approach for local testing is to use
kubectl port-forward to connect to the relevant service.
If you look in the list of services above (
kubectl get services) we have one named 'service/lab-jupyter' so let's try that (with microk8s):
$ kubectl port-forward service/lab-jupyter 8888:8888 Forwarding from 127.0.0.1:8888 -> 8888 Forwarding from [::1]:8888 -> 8888
At this point you should be able to access your notebooks by going to this forwarded port ie 'http://localhost:8888'
Accessing the React UI¶
We repeat the port forwarding above, this time for another service
$ kubectl port-forward service/lab-presentation 8091:8091 Forwarding from 127.0.0.1:8091 -> 8091 Forwarding from [::1]:8091 -> 8091
Now go to https://localhost:8091/coco to access the React UI. Login as 'garygeeke',password 'admin'.
Accessing the Egeria UI¶
The same applies to the service exposing Egeria UI via nginx
$ kubectl port-forward service/lab-nginx 8443:443 Forwarding from 127.0.0.1:8443 -> 443 Forwarding from [::1]:8443 -> 443
Because the environment is entirely self-contained, you can easily start over the labs simply by deleting the deployment and running the installation again. This will wipe out all of the metadata across the lab Egeria servers, remove all messages from the Kafka bus used in the cohort, reset the Jupyter notebooks to their original clean state, etc.
To delete the deployment, simply run this:
$ helm delete lab
lab is the name you used in your original deployment. (You can see what it's called by first running
helm list and reviewing the output.)
(Then just re-run the last command in the Installation section above to get a fresh environment.)
The chart is configured to use a default set of parameters. You can override these by creating a file such as
lab.yaml with the contents of any values you wish to modify, for example:
service: type: NodePort nodeport: jupyter: 30888 core: 30080 datalake: 30081 dev: 30082 factory: 30083 ui: 30443
Refer to the existing values file for additional ports in this section that may reflect new components as added
You can then deploy using
helm install lab odpi-egeria-lab -f lab.yaml which will override standard defaults with your choices
Support has been added to use persistence in these charts. See 'values.yaml' for more information on this option. You may also wish to refer to the 'egeria-base' helm chart which is a deployment of a single, persistent, autostart server with UI.
Note however that since this will save the state of your configuration done from the tutorial notebooks it may be confusing - as such this is disabled by default. It may be useful if you are modifying the charts for your own use.
You will also need to delete all storage associated with the chart manually if you want to cleanup/reset - for example
kubectl delete pvc --all kubectl delete pv --all