Hi! I up prefect server in docker locally with version "core-0.15.2" it starts normally, but the when i try to up agent , got error : "prefect.exceptions.ClientError: Your Prefect Server instance has no tenants. Create a tenant with `prefect server create-tenant`". Found that, if I use folder with postgres data, that was created with older version of server, agent up as normal. Сan anybody help, what happens?

Hi @Denis Rogovskiy, I’m a bit unclear here. Does your server already have a tenant from the old version? Was this an attempt to upgrade?

i run server with core14-x with one folder for postgres data, then i change version to newer core-0.15.2 everything works fine. Then i needed to up server/agent on new empty machine and there i faced with problem, that agent cant start . I made some experiments like - change postgres folder on first server, restart server, and again cant start agent. Change back to pg-data folder, made by core14-x, and it works..

When you check server, do you see your tenant?

no, it is empty

It seems likely that you'll need to run the database migrations

looks like it make this command: graphql2: hostname: graphql2 image: "prefecthq/server:${PREFECT_SERVER__TAG:-latest}" ports: - "${PREFECT_SERVER__GRAPHQL_HOST_PORT 4201}4201" command: bash -c "${PREFECT_SERVER__DB_CMD} && python src/prefect_server/services/graphql/server.py" and PREFECT_SERVER__DB_CMD="prefect-server database upgrade -y"

prefect-server database upgrade

is the key command here

graphql2_1 | graphql2_1 | Running Alembic migrations... postgres2_1 | postgres2_1 | PostgreSQL Database directory appears to contain a database; Skipping initialization postgres2_1 | graphql2_1 | INFO [alembic.runtime.migration] Context impl PostgresqlImpl. towel2_1 | {"severity": "INFO", "name": "prefect-server.Scheduler", "message": "Scheduled 0 flow runs."} postgres2_1 | 2021-10-06 153434.923 UTC [1] LOG: listening on IPv4 address "0.0.0.0", port 5432 postgres2_1 | 2021-10-06 153434.923 UTC [1] LOG: listening on IPv6 address "::", port 5432 graphql2_1 | INFO [alembic.runtime.migration] Will assume transactional DDL. graphql2_1 | Applied Hasura metadata from /prefect-server/services/hasura/migrations/metadata.yaml graphql2_1 | graphql2_1 | Database upgraded!