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0404790df9
To use JWT to communicate with Azure eventhub we need to renew the JWT credentials from time to time. This example yaml helps out with that * Supports both deployment and cronjob based renewal * static service principal * aad-pod-identity in azure Signed-off-by: Edvin Norling <edvin.norling@xenit.se>
109 lines
3.3 KiB
YAML
109 lines
3.3 KiB
YAML
---
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apiVersion: v1
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kind: ConfigMap
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metadata:
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name: credentials-sync-eventhub
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data:
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# Patch this ConfigMap with additional values needed for your cloud
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KUBE_SECRET: webhook-url # does not yet exist -- will be created in the same Namespace
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ADDRESS: "fluxv2" # the Azure Event Hub name
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---
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# This CronJob frequently fetches registry tokens and applies them as an imagePullSecret.
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# note: CronJob scheduling can block cluster bootstraps and cold-reboots from obtaining registry tokens for a considerable time.
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# To run the job immediately, do `kubectl create job --from=cronjob/credentials-sync-eventhub -n flux-system credentials-sync-eventhub-init`
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apiVersion: batch/v1beta1
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kind: CronJob
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metadata:
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name: credentials-sync-eventhub
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namespace: flux-system
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spec:
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suspend: false
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schedule: 0 */6 * * *
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failedJobsHistoryLimit: 1
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successfulJobsHistoryLimit: 1
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jobTemplate:
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spec:
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template:
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spec:
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serviceAccountName: credentials-sync-eventhub
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securityContext:
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runAsNonRoot: true
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runAsUser: 1001
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restartPolicy: Never
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containers:
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- image: busybox # override this with a cloud-specific image
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name: sync
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envFrom:
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- configMapRef:
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name: credentials-sync-eventhub
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env:
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- name: RECONCILE_SH # override this env var with a shell function in a kustomize patch
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value: |-
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reconcile() {
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echo reconciling...
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}
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command:
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- bash
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- -ceu
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- |-
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# template reconcile() into the script
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# env var is expanded by k8s before the pod starts
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$(RECONCILE_SH)
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apply-secret() {
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/kbin/kubectl create secret generic "${1}" \
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--from-literal=token="${2}" \
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--from-literal=address="${3}" \
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--dry-run=client -o=yaml \
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| grep -v "creationTimestamp:" \
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| /kbin/kubectl apply -f -
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}
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reconcile
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resources: {}
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volumeMounts:
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- mountPath: /.azure
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name: cache-volume
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volumes:
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- emptyDir: {}
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name: cache-volume
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# RBAC necessary for our Deployment to apply our secret that will store the JWT token
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---
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kind: Role
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apiVersion: rbac.authorization.k8s.io/v1
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metadata:
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name: credentials-sync-eventhub
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namespace: flux-system
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rules:
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- apiGroups: [""]
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resources:
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- secrets
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verbs:
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- get
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- create
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- update
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- patch
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# # Lock this down to the specific Secret name (Optional)
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#resourceNames:
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# - $(KUBE_SECRET) # templated from kustomize vars referencing ConfigMap, also see kustomizeconfig.yaml
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---
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kind: RoleBinding
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apiVersion: rbac.authorization.k8s.io/v1
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metadata:
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name: credentials-sync-eventhub
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namespace: flux-system
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subjects:
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- kind: ServiceAccount
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name: credentials-sync-eventhub
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roleRef:
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kind: Role
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name: credentials-sync-eventhub
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apiGroup: rbac.authorization.k8s.io
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---
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apiVersion: v1
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kind: ServiceAccount
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metadata:
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name: credentials-sync-eventhub
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namespace: flux-system
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