I am facing an issue with my Dgraph deployment on a MicroK8s cluster. Below are the key points:
Connection with Dgraph Zero
The pod e360-dgraph-alpha-0 successfully connects to the pod e360-dgraph-zero-0, as shown in the logs:
I0327 15:59:22.701272 19 pool.go:164] CONN: Connecting to e360-dgraph-zero-0.e360-dgraph-zero-headless.default.svc.cluster.local:5080
I0327 15:59:22.744414 19 groups.go:135] Connected to group zero. Assigned group: 0
This indicates that there are no connectivity issues between Dgraph Alpha and Dgraph Zero.
Error subscribing to GraphQL schema updates
However, the following error repeatedly appears in the Dgraph Alpha logs:
E0327 15:59:22.602032 19 groups.go:1223] Error during SubscribeForUpdates for prefix "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x15dgraph.graphql.schema\x00": Unable to find any servers for group: 1. closer err: <nil>
This indicates that Dgraph Alpha cannot find servers for group 1, which is likely related to issues in the GraphQL schema configuration.
Raft Initialization
The Dgraph Alpha node initializes correctly as part of group 1, as shown in the logs:
I0327 15:59:23.014841 19 draft.go:2168] Restarting node for group: 1
I0327 15:59:23.015839 19 groups.go:157] Init and start Raft node: OK
This confirms that the Raft consensus system is functioning.
Schema loading from the database
The schema and types are loaded from the database, but they do not contain any data:
I0327 15:59:22.749099 19 log.go:34] LoadFromDb Schema Streaming about 0 B of uncompressed data (0 B on disk)
I0327 15:59:22.770047 19 log.go:34] LoadFromDb Type Streaming about 0 B of uncompressed data (0 B on disk)