Celestia Devnet

Note: This guideline is only relevant for the current devnet. As we approach to testnet, there will be a new guide

Celestia Devnet

Link to the current devnet-2 explorer: https://celestia.observer/

Celestia 101 (Overview)

Conceptually, we have 2 main components in the network:

Celestia Full Node.
Celestia Light Node.

Note: When you see formatted text of those 2 above(Celestia Full Node, Celestia Light Node), remember that we are referring to a conceptual view. Standard formatted text is a technical view

Celestia Full Node

When we are mentioning Celestia Full Node, we are relating to a combination of 2 components:

Celestia Application (lives in celestia-app repo)
Celestia Full Node (lives in celestia-node repo)

Conceptually, one can't live without another as we need every new block to be erasure coded in order to do data availability sampling from Celestia Light Nodes

Technically, Celestia Application and Celestia Full Node are operating on different processes of one instance(e.g. server). Let's break down what each of the parties do.

Celestia Core in tandem with Celestia Application(C-App) are responsible for the following components:

Consensus
State Interaction
Block Production
Communication between C-App instances only!

Celestia Full Node(CFN) takes care of these points:

Sync blocks from C-App
Erasure Codes the blocks
Serve headers/shares to Celestia Light Nodes
Communication between Celestia Full Nodes and Celestia Light Nodes

Communication of C-App and CFN processes happens over the RPC.

Celestia Light Node

Celestia Light Nodes(CLN) lives only in celestia-node repo. What does CLN do:

Connects to a Celestia Full Node.
Syncs the headers.
Does data availability sampling (DAS) afterwards.

Note: Celestia Light Nodes are not communicating between each other and only communicates between Celestia Full Nodes

Installation guide

Caveat 1: Make sure that you have at least 100+ Gb of free space to safely install+run the Celestia Application + Celestia Full Node and 5+ Gb of free space for Celestia Light Node

Caveat 2: You need to install Celestia Application + Celestia Full Node in one HW instance and Celestia Light Node in the other HW instance

You need to install celestia-app, celestia-node in order to move on.

Note: It is much easier to run a non-validator Celestia App + Celestia Full Node rather then going back and forth in order to be included in the active validator set

Troubleshoot