Build the gaiad binary and the tendermint/gaiadnode docker image.
Note the binary will be mounted into the container so it can be updated without rebuilding the image.
cd $GOPATH/src/github.com/cosmos/cosmos-sdk
# Build the linux binary in ./build
make build-linux
# Build tendermint/gaiadnode image
make build-docker-gaiadnode
To start a 4 node testnet run:
make localnet-start
The nodes bind their RPC servers to ports 46657, 46660, 46662, and 46664 on the host. This file creates a 4-node network using the gaiadnode image. The nodes of the network expose their P2P and RPC endpoints to the host machine on ports 46656-46657, 46659-46660, 46661-46662, and 46663-46664 respectively.
To update the binary, just rebuild it and restart the nodes:
make build-linux
make localnet-stop
make localnet-start
The make localnet-start creates files for a 4-node testnet in ./build by calling the gaiad testnet command.
The ./build directory is mounted to the /gaiad mount point to attach the binary and config files to the container.
For instance, to create a single node testnet:
cd $GOPATH/src/github.com/cosmos/cosmos-sdk
# Clear the build folder
rm -rf ./build
# Build binary
make build-linux
# Create configuration
docker run -v `pwd`/build:/gaiad tendermint/gaiadnode testnet --o . --v 1
#Run the node
docker run -v `pwd`/build:/gaiad tendermint/gaiadnode
Log is saved under the attached volume, in the gaiad.log file and written on the screen.
If you have multiple binaries with different names, you can specify which one to run with the BINARY environment variable. The path of the binary is relative to the attached volume.