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Kubernetes(EKS) node groups

Kubernetes(EKS) provides node groups, which is used for provisioning and providing lifecycle management of nodes.

SpaceONE recommends using two seperate node groups, one for core service and the other for plugins.

node group	Description
spaceone-core-nodegroup	Deploy core pods like identity, console, inventory
spaceone-supervisor-nodegroup	Deploy supervisor pods and plugins

Each node group has its own kubernetes labels

Key	Value
Category	core

Key	Value
Category	supervisor

Helm chart value

Based on kubernetes labels on node groups, SpaceONE helm chart supports node selector options.

SpaceONE helm chart also supports ***pod.spec*** options, so that you can specific options for some pod.

One example is nodeSelector, which determines pod's location based on labels.

spaceone-core-nodegroup

Include nodeSelector at every chart value like below.

The value of nodeSelector is the key and value of label that you have applied above.

config:
  enabled: true
  replicas: 4
  image:
    name: public.ecr.aws/megazone/spaceone/config
    version: 1.8.5


  pod:
    spec:
      nodeSelector:
        Category: core

spaceone-supervisor-nodegroup

Include nodeSelector at supervisor chart value like below.

In a supervisor value, you have to update two sections.

1. KubernetesConnector
2. pod

KubernetesConnector indicates that plugins created by supervisor has nodeSelector configuration.

KubernetesConnector
  nodeSelector:
    Category: supervisor

pod indicates that supervisor pod itself is deployed with nodeSelector option.

pod:
  spec:
    nodeSelector:
      Category: supervisor

supervisor:
    enabled: true
    image:
      name: public.ecr.aws/megazone/spaceone/supervisor
      version: 1.8.5
    application: {}
    application_scheduler:
        NAME: root
        HOSTNAME: root-supervisor.svc.cluster.local
        BACKEND: KubernetesConnector
        CONNECTORS:
            RepositoryConnector:
                endpoint:
                    v1: grpc://repository.spaceone.svc.cluster.local:50051
            PluginConnector:
                endpoint:
                    v1: grpc://plugin.spaceone.svc.cluster.local:50051
            KubernetesConnector:
                namespace: root-supervisor
                start_port: 50051
                end_port: 50052
                headless: true
                replica:
                    inventory.Collector: 10
                    monitoring.DataSource: 4
                nodeSelector:
                    Category: supervisor


        TOKEN_INFO:
            protocol: consul
            config:
                host: consul.spaceone.svc.cluster.local
            uri: debug/supervisor/TOKEN
    pod:
      spec:
        nodeSelector:
          Category: supervisor