HorizontalPodAutoscaler

Default version: autoscaling/v2beta2

• Official Documentation

• PHP K8s Metrics Instances documentation

Example

use RenokiCo\PhpK8s\K8s;

$container = K8s::container()
    ->setName('mysql')
    ->setImage('mysql', '5.7')
    ->setPorts([
        ['name' => 'mysql', 'protocol' => 'TCP', 'containerPort' => 3306],
    ]);

$pod = K8s::pod()
    ->setName('mysql')
    ->setLabels(['tier' => 'backend'])
    ->setContainers([$mysql]);

$dep = $this->cluster
    ->deployment()
    ->setName('mysql')
    ->setSelectors(['matchLabels' => ['tier' => 'backend']])
    ->setReplicas(1)
    ->setTemplate($pod)
    ->create();

$cpuMetric = K8s::metric()
    ->cpu()
    ->averageUtilization(70);

$hpa = $this->cluster
    ->horizontalPodAutoscaler()
    ->setName('deploy-mysql')
    ->setResource($dep)
    ->addMetrics([$cpuMetric])
    ->min(1)
    ->max(10)
    ->create();

Attaching to Resources

The Horizontal Pod Autoscaler class can attach to any Scalable instance, like Stateful Set or Deployment.

$dep = $cluster->getDeploymentByName('mysql');

$hpa->setResource($dep);

HPA Status

The Status API is available to be accessed for fresh instances:

$hpa->refresh();

$hpa->getCurrentReplicasCount();
$hpa->getDesiredReplicasCount();
$hpa->getUnavailableReplicasCount();