This sections contain a few tips to identify and correct problems when running IPFS Cluster.

Debug logging

By default, ipfs-cluster-service prints only INFO, WARNING and ERROR messages. Sometimes, it is useful to increase verbosity with the --loglevel debug flag. This will make ipfs-cluster and its components much more verbose. The --debug flag will make ipfs-cluster, its components and its most prominent dependencies (raft, libp2p-raft, libp2p-gorpc) verbose.

ipfs-cluster-ctl offers a --debug flag which will print information about the API endpoints used by the tool. --enc json allows to print raw json responses from the API.

Interpreting debug information can be tricky. For example:

18:21:50.343 ERROR   ipfshttp: error getting:Get dial tcp getsockopt: connection refused ipfshttp.go:695

The above line shows a message of ERROR severity, coming from the ipfshttp facility. This facility corresponds to the ipfshttp module which implements the IPFS Connector component. This information helps narrowing the context from which the error comes from. The error message indicates that the component failed to perform a GET request to the ipfs HTTP API. The log entry contains the file and line-number in which the error was logged.

Given all this context, we can figure out that very probably the ipfs daemon is not running, or not reachable.

When discovering a problem, it is always useful if you can provide some logs when asking for help.

Peer not starting

When your peer is not starting:

Peer stopped unexpectedly

When a peer stops unexpectedly:

ipfs-cluster-ctl status <cid> does not report CID information for all peers

This is usually the result of a desync between the shared state and the local state, or between the local state and the ipfs state. If the problem does not autocorrect itself after a couple of minutes (thanks to auto-syncing), try running ipfs-cluster-ctl sync [cid] for the problematic item. You can also restart your node.

libp2p errors

Since cluster is built on top of libp2p, many errors that new users face come from libp2p and have confusing messages which are not obvious at first sight. This list compiles some of them:

Next steps: Upgrades