@ancient-wolf-19325 How to modify the vaules.yaml for flyte binary to give namespace specific role to namespace service account?

To give a namespace-specific Role to a namespace ServiceAccount in Flyte Binary, you should use a Kubernetes Role and RoleBinding (not ClusterRole/ClusterRoleBinding) in your

values.yaml

via the

clusterResourceTemplates.inline

section. Define a Role and RoleBinding template that uses

{{ namespace }}

for the namespace, and Flyte's cluster resource manager will create these for each project-domain namespace. Example:

clusterResourceTemplates:
  inline:
    001_namespace.yaml: |
      apiVersion: v1
      kind: Namespace
      metadata:
        name: '{{ namespace }}'
    002_serviceaccount.yaml: |
      apiVersion: v1
      kind: ServiceAccount
      metadata:
        name: my-sa
        namespace: '{{ namespace }}'
    003_role.yaml: |
      apiVersion: rbac.authorization.k8s.io/v1
      kind: Role
      metadata:
        name: my-role
        namespace: '{{ namespace }}'
      rules:
      - apiGroups: [""]
        resources: ["pods"]
        verbs: ["get", "list"]
    004_rolebinding.yaml: |
      apiVersion: rbac.authorization.k8s.io/v1
      kind: RoleBinding
      metadata:
        name: my-rolebinding
        namespace: '{{ namespace }}'
      roleRef:
        apiGroup: rbac.authorization.k8s.io
        kind: Role
        name: my-role
      subjects:
      - kind: ServiceAccount
        name: my-sa
        namespace: '{{ namespace }}'

This ensures each namespace gets its own ServiceAccount, Role, and RoleBinding. For more, see the example in flyte-binary/gke-starter.yaml and flyte-core/values-eks.yaml. Would you like more detail on how to reference this ServiceAccount in your Flyte tasks? Sources: - flyte-binary/gke-starter.yaml - flyte-core/values-eks.yaml 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.

@ancient-wolf-19325 no it's aws iam role, not cluster role

To assign a namespace-specific AWS IAM role to a ServiceAccount in Flyte Binary, annotate the ServiceAccount with the IAM role ARN using the

eks.amazonaws.com/role-arn

annotation in your

values.yaml

under

clusterResourceTemplates.inline

. Example:

clusterResourceTemplates:
  inline:
    001_namespace.yaml: |
      apiVersion: v1
      kind: Namespace
      metadata:
        name: '{{ namespace }}'
    002_serviceaccount.yaml: |
      apiVersion: v1
      kind: ServiceAccount
      metadata:
        name: default
        namespace: '{{ namespace }}'
        annotations:
          eks.amazonaws.com/role-arn: '{{ defaultIamRole }}'

Set the

defaultIamRole

for each namespace in the

cluster_resources.customData

section, mapping the correct IAM role ARN to each project-domain. See eks-starter.yaml for a full example. Would you like more detail on how to configure

defaultIamRole

for each namespace? Sources: - flyte-binary/eks-starter.yaml 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.

@ancient-wolf-19325 yes, please

To configure a different

defaultIamRole

(IAM role ARN) for each namespace (project-domain), set the mapping in the

inline.cluster_resources.customData

section of your

values.yaml

. For example:

inline:
  cluster_resources:
    customData:
      - production:
          - defaultIamRole:
              value: arn:aws:iam::<ACCOUNT_ID>:role/production-flyte-role
      - staging:
          - defaultIamRole:
              value: arn:aws:iam::<ACCOUNT_ID>:role/staging-flyte-role
      - development:
          - defaultIamRole:
              value: arn:aws:iam::<ACCOUNT_ID>:role/development-flyte-role

This ensures that when a new project-domain namespace is created, the ServiceAccount in that namespace is annotated with the correct IAM role ARN. The annotation is referenced in the ServiceAccount template as shown previously. For a complete example, see eks-starter.yaml and values-eks.yaml. Let me know if you want a step-by-step breakdown or a full sample

values.yaml

. Sources: - flyte-binary/eks-starter.yaml - flyte-core/values-eks.yaml 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.

@ancient-wolf-19325 no, my namespace is project specific too. Like project-a-production, project-b-production etc

You can assign a unique IAM role per project-specific namespace by specifying each namespace (e.g.,

project-a-production

,

project-b-production

) in the

customData

section under

cluster_resources

in your

values.yaml

. For each namespace, set the

defaultIamRole

to the desired IAM role ARN:

inline:
  cluster_resources:
    customData:
      - project-a-production:
          - defaultIamRole:
              value: arn:aws:iam::<ACCOUNT_ID>:role/project-a-role
      - project-b-production:
          - defaultIamRole:
              value: arn:aws:iam::<ACCOUNT_ID>:role/project-b-role

This will annotate the ServiceAccount in each namespace with the correct IAM role. See the pattern in eks-starter.yaml and values-eks.yaml. Would you like a full example including the ServiceAccount template? Sources: - flyte-binary/eks-starter.yaml - flyte-core/values-eks.yaml 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.

@ancient-wolf-19325 how to add nodeaffinity to my task definition

To add node affinity to a Flyte task, use the

pod_template

or

pod_template_name

argument in the

@task

decorator, referencing a Kubernetes PodTemplate that includes your desired node affinity. This is the recommended approach as of Flyte v1.13.x and later. You define the PodTemplate in your cluster and reference it by name in your task:

from flytekit import task

@task(pod_template_name="my-affinity-podtemplate")
def my_task():
    ...

Alternatively, for full customization, you can use the Pod task plugin and specify a

V1PodSpec

with node affinity directly in the

task_config

(requires

flytekitplugins-pod

):

from flytekit import task
from flytekitplugins.pod import Pod
from kubernetes.client.models import V1PodSpec, V1Affinity, V1NodeAffinity, V1NodeSelector, V1NodeSelectorTerm, V1NodeSelectorRequirement

affinity = V1Affinity(
    node_affinity=V1NodeAffinity(
        required_during_scheduling_ignored_during_execution=V1NodeSelector(
            node_selector_terms=[
                V1NodeSelectorTerm(
                    match_expressions=[
                        V1NodeSelectorRequirement(
                            key="disktype",
                            operator="In",
                            values=["ssd"]
                        )
                    ]
                )
            ]
        )
    )
)

@task(
    task_config=Pod(
        pod_spec=V1PodSpec(
            affinity=affinity
        )
    )
)
def my_task():
    ...

See the Kubernetes task pod configuration guide and flytekitplugins-pod README for details. Would you like a step-by-step example for your use case? Sources: - flytekitplugins-pod README - Pod plugin example 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.

cluster_resources:
      customData:
        - production:
            - defaultIamRole:
                value: <flyte-role>
        - staging:
            - defaultIamRole:
                value: <flyte-role>
        - development:
            - defaultIamRole:
                value: <flyte-role>
        - project-a-development:
            - defaultIamRole:
                value: value-a

@ancient-wolf-19325 my service account in project-a-development is still using the default flyte role, not value a

It seems likely that Flyte is using the default IAM role because, by default, the mapping in

customData

is keyed by domain (e.g.,

development

,

production

), not by full namespace like

project-a-development

. The standard Flyte Helm chart and cluster resource manager expect keys to match the domain, not the full project-domain namespace, so your

project-a-development

entry may be ignored and the domain-level default is used instead. See flyte-binary/eks-starter.yaml and flyte-core/values-eks.yaml. If you need project-specific IAM roles, you may need to adjust your cluster resource manager or templates to support project-domain keys, or remove the domain-level default for

development

so only the project-specific entry is present. Would you like more detail on how to customize this mapping or patch the resource manager? Sources: - flyte-binary/eks-starter.yaml - flyte-core/values-eks.yaml 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.

@ancient-wolf-19325 yes

My understanding is that to achieve project-specific IAM roles (e.g., for

project-a-development

), you need to ensure that the cluster resource manager and your templates are set up to match on the full project-domain key, not just the domain. By default, Flyte’s cluster resource manager matches on domain first, so if both

development

and

project-a-development

are present, the more general

development

may take precedence. To force project-specific roles, remove the generic domain-level entry (e.g.,

- development:

) so only the project-specific entry remains for that namespace. Your

customData

should look like:

cluster_resources:
  customData:
    - project-a-development:
        - defaultIamRole:
            value: arn:aws:iam::<ACCOUNT_ID>:role/project-a-role
    - project-b-development:
        - defaultIamRole:
            value: arn:aws:iam::<ACCOUNT_ID>:role/project-b-role
    # (repeat for other project-domain combinations)

This way, only the specific mapping is available, and Flyte will annotate the ServiceAccount in

project-a-development

with the correct IAM role. If you need both domain-level and project-level mappings, you may need to customize the cluster resource manager logic to prefer the more specific key. For more, see the structure in flyte-binary/eks-starter.yaml. Let me know if you want a step-by-step on customizing the resource manager or a full example. Sources: - flyte-binary/eks-starter.yaml - flyte-core/values-eks.yaml 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.

@ancient-wolf-19325 but I only need custom one for one project. the rest i still want to the default domain. can i achieve that

Yes, you can achieve this by specifying both the domain-level default and the project-specific override in your

customData

. Flyte’s cluster resource manager will use the more specific project-domain mapping if it exists, and fall back to the domain-level default otherwise. For example:

cluster_resources:
  customData:
    - development:
        - defaultIamRole:
            value: arn:aws:iam::<ACCOUNT_ID>:role/default-dev-role
    - project-a-development:
        - defaultIamRole:
            value: arn:aws:iam::<ACCOUNT_ID>:role/project-a-role

With this setup,

project-a-development

will use its custom IAM role, and all other

*-development

namespaces will use the default. This pattern is shown in flyte-binary/eks-starter.yaml. Would you like a full example or more details on how the precedence works? Sources: - flyte-binary/eks-starter.yaml 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.

@ancient-wolf-19325 but you just said the the more general devlopment will take precedence

Apologies for any confusion. In Flyte’s cluster resource manager, the more specific project-domain key (e.g.,

project-a-development

) will take precedence over the general domain key (e.g.,

development

) if both are present in

customData

. This means you can safely specify both, and Flyte will use the project-specific IAM role for

project-a-development

and the default for all other development namespaces, as shown in flyte-binary/eks-starter.yaml. Would you like a step-by-step example or more details on how this matching works? Sources: - flyte-binary/eks-starter.yaml 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.

@ancient-wolf-19325 no it doesn't work. the generic one still takes precedence

It seems likely that, in the current Flyte cluster resource manager implementation, the generic domain-level entry (e.g.,

development

) is still taking precedence over the project-domain-specific entry (e.g.,

project-a-development

). This is a known limitation discussed in the community, and the matching logic may not support project-domain overrides out-of-the-box—see flyte-binary/eks-starter.yaml and related issues. To work around this, you may need to remove the generic domain entry for

development

and explicitly list all project-domain combinations that require the default role, or patch the cluster resource manager logic to prefer the more specific key. There is no official support for project-domain override precedence in the default Helm chart or resource manager as of now. Would you like more detail on possible workarounds or how to patch the resource manager? Sources: - flyte-binary/eks-starter.yaml 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.