ERROR | Azure Key Vault access from Python application in Azure Kubernetes Service

Question

I have a python application in AKS where I need to read the secrets from Azure key vault.

I am using:

credential = DefaultAzureCredential(logging_enable=True)
client = SecretClient(vault_url=KV_URI, credential=credential)
secret = client.get_secret(secretName)

I have the managed identity which has read access RBAC on the vault but I am getting Timeout errors.

along with these messages:

[ERROR] - Unable to connect to KV using DefaultAzureCredential, ERROR: (<urllib3.connection.HTTPSConnection object at 0x7f2dc85c2c90>, 'Connection to <vault_name>.vault.azure.net timed out. (connect timeout=300)')

[App: azure.identity._credentials.environment -- Module: environment --Line# 109] [INFO] - Incomplete environment configuration for EnvironmentCredential. These variables are set: AZURE_CLIENT_ID, AZURE_TENANT_ID

[App: azure.identity._credentials.managed_identity -- Module: managed_identity --Line# 80] [INFO] - ManagedIdentityCredential will use workload identity

[INFO] - credential Object: <azure.identity._credentials.default.DefaultAzureCredential object at 0x7f2e00442150>

[INFO] - Request URL: 'https://<vault_name>.vault.azure.net/secrets/snowflake-password/?api-version=REDACTED'

Request method: 'GET'

Request headers:

'Accept': 'application/json'

'x-ms-client-request-id': '517c4ebb-7f70-11ef-b4ad-d9ce3dacc7ab'

'User-Agent': 'azsdk-python-keyvault-secrets/4.8.0 Python/3.12.3 (Linux-5.15.0-1071-azure-x86_64-with-glibc2.39)'

No body was attached to the request

What should I check ?