Node Troubleshooting

This page lists common troubleshooting scenarios and solutions for node operators.

401 Unauthorized: Signature Invalid

If you see a log that looks like this in op-node:

WARN [12-13|15:53:20.263] Derivation process temporary error       attempts=80 err="stage 0 failed resetting: temp: failed to find the L2 Heads to start from: failed to fetch current L2 forkchoice state: failed to find the finalized L2 block: failed to determine L2BlockRef of finalized, could not get payload: 401 Unauthorized: signature is invalid

It means that the op-node is unable to authenticate with op-geth's authenticated RPC using the JWT secret. To fix:

1. Check that the JWT secret is correct in both services.
2. Check that op-geth's authenticated RPC is enabled, and that the URL is correct.

403 Forbidden: Invalid Host Specified

If you see a log that looks like this in op-node:

{"err":"403 Forbidden: invalid host specified\n","lvl":"error","msg":"error getting latest header","t":"2022-12-13T22:29:18.932833159Z"}

It means that you have not whitelisted op-node's host with op-geth. To fix:

1. Make sure that the --authrpc.vhosts parameter in op-geth is either set to the correct host, or *.
2. Check that op-geth's authenticated RPC is enabled, and that the URL is correct.

Failed to Load P2P Config

If you see a log that looks like this in op-node:

CRIT [12-13|13:46:21.386] Application failed                       message="failed to load p2p config: failed to load p2p discovery options: failed to open discovery db: mkdir /p2p: permission denied"

It means that the op-node does not have write access to the P2P discovery or peerstore directories. To fix:

1. Make sure that the op-node has write access to the P2P directory. By default, this is /p2p.
2. Set the P2P directory to somewhere the op-node can access via the --p2p.discovery.path and --p2p.peerstore.path parameters.
3. Set the discovery path to memory to disable persistence via the --p2p.discovery.path and --p2p.peerstore.path parameters.

Wrong Chain

If you see a log that looks like this in op-node:

{"attempts":183,"err":"stage 0 failed resetting: temp: failed to find the L2 Heads to start from: wrong chain L1: genesis: 0x4104895a540d87127ff11eef0d51d8f63ce00a6fc211db751a45a4b3a61a9c83:8106656, got 0x12e2c18a3ac50f74d3dd3c0ed7cb751cc924c2985de3dfed44080e683954f1dd:8106656","lvl":"warn","msg":"Derivation process temporary error","t":"2022-12-13T23:31:37.855253213Z"}

It means that the op-node is pointing to the wrong chain. To fix:

1. Verify that the op-node's L1 URL is pointing to the correct L1 for the given network.
2. Verify that the op-node's rollup config/--network parameter is set to the correct network.
3. Verify that the op-node's L2 URL is pointing to the correct instance of op-geth, and that op-geth is properly initialized for the given network.