I started a sandbox with : ./src/bin_node/tezos-sandboxed-node.sh 1 --connections 1

I tried to connect with tezos-client -A -P 7089

I get the error :

  • error: Unable to connect to the node: "TLS to non-TCP currently unsupported: host= endp=(Unknown "name resolution failed")"
  • The port seems to be incorrect. The default port for the node "1" in the sandbox should be 18731.
    – vect0r
    Commented Feb 24, 2020 at 17:19

2 Answers 2


The src/bin_node/tezos-sandboxed-node.sh script that launches a sandboxed node is meant to be used with the src/bin_client/tezos-init-sandboxed-client.sh one that sets some env variables and bash aliases. The tutorial documentation for these scripts is here: https://tezos.gitlab.io/user/sandbox.html.


unless you are doing development on the Tezos platform, I suggest you have a look at this tool https://gitlab.com/nomadic-labs/teztool/-/tree/master to run a sandbox node.

In particular: https://gitlab.com/nomadic-labs/teztool/-/blob/master/docs/sandbox.md

These scripts are mean for development and to be used in the CI.

Together with this sandbox, you can use this snapcraft for the client : https://gitlab.com/abate/tezos-snapcraft/-/tree/master

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.