Api dont start in Kubernetes

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Hello everyone! I’m try deploy the prefect api and agent in k8s(ocp) with custom namespace (like this Deploying Prefect Agents on Kubernetes).I have a problem, the api does not start, outputs 0 logs, only a welcome message, but there are no problems with the agent. After re-creation, the container lives for about 5 seconds and outputs “Orion stopped!” and again
My deployment.yml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: orion
spec:
  selector:
    matchLabels:
      app: orion
  replicas: 1  # We're using SQLite, so we should only run 1 pod
  template:
    metadata:
      labels:
        app: orion
    spec:
      containers:
      - name: api
        image: proxy-repo/prefect:2.4.0-python3.9
        command: ["prefect", "orion", "start","--host", "0.0.0.0", "--port", "4200", "--no-ui", "--log-level", "DEBUG"]
        imagePullPolicy: "IfNotPresent"
        ports:
        - containerPort: 4200
        env:
          - name: PREFECT_HOME
            value: .

      - name: agent
        image: proxy-repo/prefecthq/prefect:2.4.0-python3.9
        command: ["prefect", "agent", "start", "-q", "kubernetes"]
        imagePullPolicy: "IfNotPresent"
        env:
          - name: PREFECT_API_URL
            value: http://orion:4200/api
          - name: PREFECT_HOME
            value: .

---
apiVersion: v1
kind: Service
metadata:
  name: orion
  labels:
    app: orion
spec:
  ports:
    - port: 4200
      protocol: TCP
  selector:
    app: orion
---
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
  namespace: my-namespace
  name: flow-runner
rules:
- apiGroups: [""]
  resources: ["pods", "pods/log", "pods/status"]
  verbs: ["get", "watch", "list"]
- apiGroups: ["batch"]
  resources: ["jobs"]
  verbs: [ "get", "list", "watch", "create", "update", "patch", "delete" ]
---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
  name: flow-runner-role-binding
  namespace: my-namespace
subjects:
- kind: ServiceAccount
  name: default
  namespace: my-namespace
roleRef:
  kind: Role
  name: flow-runner
  apiGroup: rbac.authorization.k8s.io

ocp and k8s version

PS C:\Users\18320943\projects> oc version
Client Version: openshift-clients-4.6.0-202006250705.p0-168-g02c110006
Kubernetes Version: v1.20.0+558d959

Help me pls) it’s first try deplot api\agent

1 Like
2

If you’re getting started, it’s much easier to start in a virtual environment without Kubernetes. Kubernetes is really relevant for setting up production deployments.

To get started, you can install and start Orion in two commands (even on Windows, without Docker or Kubernetes):

pip install prefect
prefect orion start

Then, anytime you run any flow, it will be already visible in your UI.

For production deployments, you can sign up for a free tier of Prefect Cloud (no trial, no credit card required), or if you need more help with this setup, you can reach out to cs@prefect.io