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chore(jsonnet)!: convert read statefulset into deployment for loki-simple-scalable #13977

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Aug 27, 2024
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chore(jsonnet)!: convert read statefulset into deployment for loki-simple-scalable #13977

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29 changes: 9 additions & 20 deletions production/ksonnet/loki-simple-scalable/read.libsonnet
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Original file line number Diff line number Diff line change
Expand Up @@ -2,21 +2,14 @@ local k = import 'ksonnet-util/kausal.libsonnet';

{
local container = k.core.v1.container,
local pvc = k.core.v1.persistentVolumeClaim,
local statefulSet = k.apps.v1.statefulSet,
local deployment = k.apps.v1.deployment,
local volumeMount = k.core.v1.volumeMount,
local service = k.core.v1.service,

_config+:: {
read_replicas: 3,
},

// Use PVC for queriers instead of node disk.
read_pvc::
pvc.new('read-data') +
pvc.mixin.spec.resources.withRequests({ storage: '10Gi' }) +
pvc.mixin.spec.withAccessModes(['ReadWriteOnce']),

read_args::
$._config.commonArgs {
target: 'read',
Expand All @@ -26,28 +19,24 @@ local k = import 'ksonnet-util/kausal.libsonnet';
container.new('read', $._images.read) +
container.withPorts($.util.defaultPorts) +
container.withArgsMixin(k.util.mapToFlags($.read_args)) +
container.withVolumeMountsMixin([volumeMount.new('read-data', '/data')]) +
container.mixin.readinessProbe.httpGet.withPath('/ready') +
container.mixin.readinessProbe.httpGet.withPort($._config.http_listen_port) +
container.mixin.readinessProbe.withInitialDelaySeconds(15) +
container.mixin.readinessProbe.withTimeoutSeconds(1),

read_statefulset:
statefulSet.new('read', $._config.read_replicas, [$.read_container], $.read_pvc) +
statefulSet.mixin.spec.withServiceName('read') +
statefulSet.mixin.metadata.withLabels({ app: $._config.headless_service_name, name: 'read' }) +
statefulSet.mixin.spec.selector.withMatchLabels({ name: 'read' }) +
statefulSet.mixin.spec.template.metadata.withLabels({ name: 'read', app: $._config.headless_service_name }) +
read_deployment:
deployment.new('read', $._config.read_replicas, [$.read_container]) +
deployment.mixin.metadata.withLabels({ app: $._config.headless_service_name, name: 'read' }) +
deployment.mixin.spec.selector.withMatchLabels({ name: 'read' }) +
deployment.mixin.spec.template.metadata.withLabels({ name: 'read', app: $._config.headless_service_name }) +
$._config.config_hash_mixin +
k.util.configVolumeMount('loki', '/etc/loki') +
k.util.antiAffinity +
statefulSet.mixin.spec.updateStrategy.withType('RollingUpdate') +
statefulSet.mixin.spec.template.spec.securityContext.withFsGroup(10001) + // 10001 is the group ID assigned to Loki in the Dockerfile
statefulSet.mixin.spec.template.spec.withTerminationGracePeriodSeconds(4800) +
statefulSet.mixin.spec.withPodManagementPolicy('Parallel'),
deployment.mixin.spec.template.spec.securityContext.withFsGroup(10001) + // 10001 is the group ID assigned to Loki in the Dockerfile
deployment.mixin.spec.template.spec.withTerminationGracePeriodSeconds(4800),

read_service:
k.util.serviceFor($.read_statefulset) +
k.util.serviceFor($.read_deployment) +
service.mixin.spec.withType('ClusterIP') +
service.mixin.spec.withPorts([
k.core.v1.servicePort.newNamed('read-http-metrics', 80, 'http-metrics'),
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