Heimdall has connectivity issues: Retrying again in 5 seconds to fetch data from Heimdall path=bor/span/1

Question

We are running a Validator Node with Bor v1.0.4 on and Heimdall v1.0.1 We face these kind of logs often

Retrying again in 5 seconds to fetch data from Heimdall path=bor/span/1

What does this indicate and how to fix it?

We were under the assumption that this due to local network issue and had a check on our network connection.

But it is working fine.

Answer 1

These logs in Bor mean that it cannot connect to Heimdall.

The Heimdall doesn’t look in sync and hence it won’t have data on all the things that Bor would require.

So the recommended procedure would be to clear the historical data of both Heimdall and Bor and resync from the snapshot.

Ensure the following is fine:

Heimdall logs are normal or is it throwing up any errors?

Ensure Heimdall is fully synced by running: curl localhost:26657/status

Also ensure whether Heimdall is connected with the other peers.

curl localhost:26657/net_info? | jq .result.n_peers

If there aren’t any peers, check whether the seeds or persistent peers are rightly set on Heimdall and ensure Port 26656 is all open.

If that's not the case then try resetting Heimdall

sudo service heimdalld stop
heimdalld unsafe-reset-all

Sync Heimdall from Snapshot

wget -c <Snapshot URL>
tar -xzvf <snapshot file> -C <HEIMDALL_DATA_DIRECTORY>