Install CometBFT

From Go Package

Install the latest version of CometBFT’s Go package:

go install github.com/cometbft/cometbft/cmd/cometbft@latest

Install a specific version of CometBFT’s Go package:

go install github.com/cometbft/cometbft/cmd/cometbft@v0.38

From Binary

To download pre-built binaries, see the releases page.

From Source

You’ll need go installed and the required environment variables set, which can be done with the following commands:

echo export GOPATH=\"\$HOME/go\" >> ~/.bash_profile
echo export PATH=\"\$PATH:\$GOPATH/bin\" >> ~/.bash_profile

Get Source Code

git clone https://github.com/cometbft/cometbft.git
cd cometbft

Compile

make install

to put the binary in $GOPATH/bin or use:

make build

to put the binary in ./build.

DISCLAIMER The binary of CometBFT is build/installed without the DWARF symbol table. If you would like to build/install CometBFT with the DWARF symbol and debug information, remove -s -w from BUILD_FLAGS in the make file.

The latest CometBFT is now installed. You can verify the installation by running:

cometbft version

Reinstall

If you already have CometBFT installed, and you make updates, simply

make install

To upgrade, run

git pull origin main
make install

Compile with CLevelDB support

NOTE: cleveldb is deprecated and will be removed in a future release.

Install LevelDB (minimum version is 1.7).

Install LevelDB with snappy (optionally). Below are commands for Ubuntu:

sudo apt-get update
sudo apt install build-essential

sudo apt-get install libsnappy-dev

wget https://github.com/google/leveldb/archive/v1.23.tar.gz && \
  tar -zxvf v1.23.tar.gz && \
  cd leveldb-1.23/ && \
  make && \
  sudo cp -r out-static/lib* out-shared/lib* /usr/local/lib/ && \
  cd include/ && \
  sudo cp -r leveldb /usr/local/include/ && \
  sudo ldconfig && \
  rm -f v1.23.tar.gz

Set a database backend to cleveldb:

# config/config.toml
db_backend = "cleveldb"

To install CometBFT, run:

CGO_LDFLAGS="-lsnappy" make install COMETBFT_BUILD_OPTIONS=cleveldb

or run:

CGO_LDFLAGS="-lsnappy" make build COMETBFT_BUILD_OPTIONS=cleveldb

which puts the binary in ./build.