httpx.ProxyError: 503 Service Unavailable


Ubuntu 20.04.4 LTS juju version:2.9.22 microk8s : v1.21

I have problem in juju - kubeflow deploy. Three services with same problem : hook failed: “install”.

kubeflow-roles/0 error idle hook failed: “install”* metacontroller-operator/0 error idle hook failed: “install”* training-operator/0 error idle hook failed: “install”*

From debug-logs, it is found “httpx.ProxyError: 503 Service Unavailable”.

Traceback (most recent call last):

  • File “/var/lib/juju/agents/unit-training-operator-0/charm/venv/httpx/_transports/”, line 60, in map_httpcore_exceptions*
  • yield*
  • File “/var/lib/juju/agents/unit-training-operator-0/charm/venv/httpx/_transports/”, line 187, in handle_request*
  • resp = self._pool.handle_request(req)*
  • File “/var/lib/juju/agents/unit-training-operator-0/charm/venv/httpcore/_sync/”, line 248, in handle_request*
  • raise exc*
  • File “/var/lib/juju/agents/unit-training-operator-0/charm/venv/httpcore/_sync/”, line 232, in handle_request*
  • response = connection.handle_request(request)*
  • File “/var/lib/juju/agents/unit-training-operator-0/charm/venv/httpcore/_sync/”, line 227, in handle_request*
  • raise ProxyError(msg)* httpcore.ProxyError: 503 Service Unavailable

Please help and give me advise to solve the error. Thank you!!