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Validated: 2023/05/18

Building and Running the Cardano DB Sync Node

The cardano-db-sync node is built and tested to run on Linux. It may run on macOS or Windows but that is unsupported.

Running the db sync node will require Nix and either multiple terminals or a multi terminal emulator like GNU Screen or TMux. Setup IOHK binary cache to avoid several hours of build time.

The db sync node is designed to work with a locally running Cardano Node. The two git repositories need to be checked out so that they are both at the same level. eg:

> tree -L 1
.
├── cardano-db-sync
├── cardano-node

These instuction assume than only blocks and transactions for a single blockchain are inserted in the db. If you want to to use a single database for more than one chain, you will need to duplicate config/pgpass and provide a unique db name for each chain (ie mainnet uses cexplorer).

Set up and run a local node

Regular users should almost never attempt building and running from the master branch. Instead, they should build and run the latest release tag. The tags can be listed using the git tag command. Pre-release tags (eg things like 12.0.0-preX) should also be avoided in most cases.

git clone https://github.com/IntersectMBO/cardano-node
cd cardano-node
git checkout <latest-official-tag> -b tag-<latest-official-tag>
nix run .#mainnet/node

More detailed instructions on GHC, Cabal, libraries and cardano-node setup can be found here:

Set up and run the db-sync node

  • Install secp256k1 library as a prerequisite for building with cabal:
./scripts/secp256k1-setup.sh ac83be33d0956faf6b7f61a60ab524ef7d6a473a
# Check ./github/workflows/haskell.yml to validate the git sha above.

# On Linux
sudo make install

# On macOS
make install

Clone repository

Start by cloning the cardano-db-sync repository from GitHub.

git clone https://github.com/IntersectMBO/cardano-db-sync

Navigate into the cloned repository directory.

cd cardano-db-sync

Checkout and Create Branch: Check out the latest official tag and create a new branch based on that tag. Replace <latest-official-tag> with the specific tag you want to use.

git checkout <latest-official-tag> -b tag-<latest-official-tag>

Using Cabal

Database Setup: Set up the PostgreSQL database using the provided script with the configuration in config/pgpass-mainnet.

PGPASSFILE=config/pgpass-mainnet scripts/postgresql-setup.sh --createdb

Build the Project: Use Cabal to build the cardano-db-sync project.

cabal build cardano-db-sync

Run the Sync Node:

  • Ensure the config/mainnet-config.yaml file is correctly specified.
  • Use the appropriate socket path for the Cardano node.
  • Define the directories for storing ledger state and schema files.
PGPASSFILE=config/pgpass-mainnet cabal run cardano-db-sync -- \
    --config config/mainnet-config.yaml \
    --socket-path ../cardano-node/state-node-mainnet/node.socket \
    --state-dir ledger-state/mainnet \
    --schema-dir schema/

If building locally, to find cardano-db-sync executable location use:

find . -name cardano-db-sync -executable -type f
./dist-newstyle/build/x86_64-linux/ghc-8.10.4/cardano-db-sync-12.0.0/build/cardano-db-sync/cardano-db-sync

On macOS brew install postgresl openssl@1.1 and extend PKG_CONFIG_PATH with PKG_CONFIG_PATH=/usr/local/opt/postgresql/lib/pkgconfig:/usr/local/opt/openssl/lib/pkgconfig cabal build all when running cabal build

Using Nix:

Build the Project: Build the cardano-db-sync project using Nix

nix build -v .#cardano-db-sync -o db-sync-node

Set up the PostgreSQL database using the provided script with the configuration in config/pgpass-mainnet

PGPASSFILE=config/pgpass-mainnet scripts/postgresql-setup.sh --createdb

Run the Sync Node:

  • Ensure the config/mainnet-config.yaml file is correctly specified.
  • Use the appropriate socket path for the Cardano node.
  • Define the directories for storing ledger state and schema files.
PGPASSFILE=config/pgpass-mainnet db-sync-node/bin/cardano-db-sync \
    --config config/mainnet-config.yaml \
    --socket-path ../cardano-node/state-node-mainnet/node.socket \
    --state-dir ledger-state/mainnet \
    --schema-dir schema/

Network Configuration, Genesis and Topology Files

The latest supported networks can be found at world book