|latest/stable||160||160||16 Dec 2021|
|latest/candidate||137||137||26 Oct 2021|
|latest/beta||160||160||15 Dec 2021|
|latest/edge||170||170||31 Jan 2022|
juju deploy containers-azure-integrator
This charm acts as a proxy to Azure and provides an interface to apply a certain set of changes via roles, profiles, and tags to the instances of the applications that are related to this charm.
When on Azure, this charm can be deployed, granted trust via Juju to access Azure, and then related to an application that supports the interface. The set of permissions that the related application could request is documented in the interface's Requires API documentation.
For example, CDK has support for this, and can be deployed with the following bundle overlay:
applications: azure-integrator: charm: cs:~containers/azure-integrator num_units: 1 relations: - ['azure-integrator', 'kubernetes-master'] - ['azure-integrator', 'kubernetes-worker']
Then deploy CDK using this overlay:
juju deploy cs:canonical-kubernetes --overlay ./k8s-azure-overlay.yaml
The charm then needs to be granted access to credentials that it can use to setup integrations. Using Juju 2.4 or later, you can easily grant access to the credentials used deploy the integrator itself:
juju trust azure-integrator
To deploy with earlier versions of Juju, or if you wish to provide it different
credentials, you will need to provide the cloud credentials via the
charm config options.
Note: The credentials used must have rights to use the API to inspect the instances connecting to it, enable a Managed Service Identity (MSI) for those instances, assign roles to those instances, and create custom roles. This may be different from the access permissions that Juju itself requires.
Resource Usage Note
By relating to this charm, other charms can directly allocate resources, such as managed disks and load balancers, which could lead to cloud charges and count against quotas. Because these resources are not managed by Juju, they will not be automatically deleted when the models or applications are destroyed, nor will they show up in Juju's status or GUI. It is therefore up to the operator to manually delete these resources when they are no longer needed, using the Azure management website or API.
Following are some examples using Azure integration with CDK.
Creating a pod with a Disk Storage-backed volume
This script creates a busybox pod with a persistent volume claim backed by Azure's Disk Storage.
#!/bin/bash # create a storage class using the `kubernetes.io/azure-disk` provisioner kubectl create -f - <<EOY apiVersion: storage.k8s.io/v1 kind: StorageClass metadata: name: azure-standard provisioner: kubernetes.io/azure-disk parameters: storageaccounttype: Standard_LRS kind: managed EOY # create a persistent volume claim using that storage class kubectl create -f - <<EOY kind: PersistentVolumeClaim apiVersion: v1 metadata: name: testclaim spec: accessModes: - ReadWriteOnce resources: requests: storage: 100Mi storageClassName: azure-standard EOY # create the busybox pod with a volume using that PVC: kubectl create -f - <<EOY apiVersion: v1 kind: Pod metadata: name: busybox namespace: default spec: containers: - image: busybox command: - sleep - "3600" imagePullPolicy: IfNotPresent name: busybox volumeMounts: - mountPath: "/pv" name: testvolume restartPolicy: Always volumes: - name: testvolume persistentVolumeClaim: claimName: testclaim EOY
Creating a service with an Azure load-balancer
The following script starts the hello-world pod behind an Azure-backed load-balancer.
#!/bin/bash kubectl run hello-world --replicas=5 --labels="run=load-balancer-example" --image=gcr.io/google-samples/node-hello:1.0 --port=8080 kubectl expose deployment hello-world --type=LoadBalancer --name=hello watch kubectl get svc -o wide --selector=run=load-balancer-example