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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,202 @@ | ||
| import kopf | ||
| import kubernetes | ||
| from kubernetes.client import V1ResourceRequirements, ApiException | ||
|
|
||
|
|
||
| def deploy_pgbouncer( | ||
| namespace: str, | ||
| ): | ||
| """ | ||
| Deploy the pgbouncer proxy to the cluster | ||
| :return: | ||
| """ | ||
| deployment = pgbouncer_deployment() | ||
| service = pgbouncer_service() | ||
| kopf.adopt(deployment) | ||
| kopf.adopt(service) | ||
|
|
||
| apps_client = kubernetes.client.AppsV1Api() | ||
| core_client = kubernetes.client.CoreV1Api() | ||
| try: | ||
| apps_client.create_namespaced_deployment(namespace=namespace, body=deployment) | ||
| core_client.create_namespaced_service(namespace=namespace, body=service) | ||
| except ApiException as e: | ||
| print("Exception when calling Api: %s\n" % e) | ||
|
|
||
|
|
||
| def update_pgbouncer( | ||
| namespace: str, | ||
| ): | ||
| deployment = pgbouncer_deployment() | ||
| service = pgbouncer_service() | ||
| kopf.adopt(deployment) | ||
| kopf.adopt(service) | ||
|
|
||
| apps_client = kubernetes.client.AppsV1Api() | ||
| core_client = kubernetes.client.CoreV1Api() | ||
| try: | ||
| apps_client.patch_namespaced_deployment(namespace=namespace, name="pgbouncer", body=deployment) | ||
| core_client.patch_namespaced_service(namespace=namespace, name="pgbouncer", body=service) | ||
| except ApiException as e: | ||
| print("Exception when calling Api: %s\n" % e) | ||
|
|
||
|
|
||
| def delete_pgbouncer( | ||
| namespace: str, | ||
| ): | ||
| apps_client = kubernetes.client.AppsV1Api() | ||
| core_client = kubernetes.client.CoreV1Api() | ||
| try: | ||
| apps_client.delete_namespaced_deployment(namespace=namespace, name="pgbouncer") | ||
| core_client.delete_namespaced_service(namespace=namespace, name="pgbouncer") | ||
| except ApiException as e: | ||
| print("Exception when calling Api: %s\n" % e) | ||
|
|
||
|
|
||
| def pgbouncer_deployment( | ||
| namespace: str, | ||
| resources: V1ResourceRequirements, | ||
| image: str = "bitnami/pgbouncer:latest", | ||
| replicas: int = 1, | ||
|
|
||
| ) -> kubernetes.client.V1Deployment: | ||
| """ | ||
| Generate a deployment for the pgbouncer proxy | ||
| :return: | ||
| """ | ||
| return kubernetes.client.V1Deployment( | ||
| api_version="apps/v1", | ||
| kind="Deployment", | ||
| metadata=kubernetes.client.V1ObjectMeta( | ||
| name="pgbouncer", | ||
| namespace=namespace, | ||
| labels={ | ||
| "app": "pgbouncer", | ||
| }, | ||
| ), | ||
| spec=kubernetes.client.V1DeploymentSpec( | ||
| replicas=1, | ||
| selector=kubernetes.client.V1LabelSelector( | ||
| match_labels={ | ||
| "app": "pgbouncer", | ||
| }, | ||
| ), | ||
| template=kubernetes.client.V1PodTemplateSpec( | ||
| metadata=kubernetes.client.V1ObjectMeta( | ||
| labels={ | ||
| "app": "pgbouncer", | ||
| }, | ||
| ), | ||
| spec=kubernetes.client.V1PodSpec( | ||
| containers=[ | ||
| kubernetes.client.V1Container( | ||
| name="pgbouncer", | ||
| image=image, | ||
| ports=[ | ||
| kubernetes.client.V1ContainerPort( | ||
| container_port=5432, | ||
| ), | ||
| ], | ||
| resources=resources, | ||
| env=[ | ||
| kubernetes.client.V1EnvVar( | ||
| name="POSTGRESQL_HOST", | ||
| value=f"postgres-compute.{namespace}.svc.cluster.local:5432", | ||
| ), | ||
| kubernetes.client.V1EnvVar( | ||
| name="PGBOUNCER_AUTH_TYPE", | ||
| value="trust", | ||
| ), | ||
| ], | ||
| ), | ||
| kubernetes.client.V1Container( | ||
| name="pgbouncer-metrics", | ||
| image="prometheuscommunity/pgbouncer-exporter:latest", | ||
| ports=[ | ||
| kubernetes.client.V1ContainerPort( | ||
| container_port=9127, | ||
| ), | ||
| ], | ||
| resources=kubernetes.client.V1ResourceRequirements( | ||
| requests={ | ||
| "cpu": "100m", | ||
| "memory": "100Mi", | ||
| }, | ||
| limits={ | ||
| "cpu": "100m", | ||
| "memory": "100Mi", | ||
| }, | ||
| ), | ||
| ) | ||
| ], | ||
| ), | ||
| ), | ||
| ), | ||
| ) | ||
|
|
||
|
|
||
| def pgbouncer_configmap( | ||
| namespace: str, | ||
| ) -> kubernetes.client.V1ConfigMap: | ||
| """ | ||
| Generate a configmap for the pgbouncer proxy | ||
| :return: | ||
| """ | ||
| return kubernetes.client.V1ConfigMap( | ||
| api_version="v1", | ||
| kind="ConfigMap", | ||
| metadata=kubernetes.client.V1ObjectMeta( | ||
| name="pgbouncer", | ||
| namespace=namespace, | ||
| labels={ | ||
| "app": "pgbouncer", | ||
| }, | ||
| ), | ||
| data={ | ||
| "pgbouncer.ini": """ | ||
| [databases] | ||
| * = host=postgres port=5432 | ||
| } | ||
| """, | ||
| "userlist.txt": """ | ||
| "postgres" "postgres" | ||
| """, | ||
| }, | ||
| ) | ||
|
|
||
|
|
||
| def pgbouncer_service( | ||
| namespace: str, | ||
| ) -> kubernetes.client.V1Service: | ||
| """ | ||
| Generate a service for the pgbouncer proxy | ||
| :return: | ||
| """ | ||
| return kubernetes.client.V1Service( | ||
| api_version="v1", | ||
| kind="Service", | ||
| metadata=kubernetes.client.V1ObjectMeta( | ||
| name="pgbouncer", | ||
| namespace=namespace, | ||
| labels={ | ||
| "app": "pgbouncer", | ||
| }, | ||
| ), | ||
| spec=kubernetes.client.V1ServiceSpec( | ||
| selector={ | ||
| "app": "pgbouncer", | ||
| }, | ||
| ports=[ | ||
| kubernetes.client.V1ServicePort( | ||
| port=5432, | ||
| name="pgbouncer", | ||
| target_port=5432, | ||
| ), | ||
| kubernetes.client.V1ServicePort( | ||
| port=6432, | ||
| name="pgbouncer-metrics", | ||
| target_port=6432, | ||
| ), | ||
| ], | ||
| ), | ||
| ) |
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