Installing Octez#

In this how-to we explain how to get up-to-date binaries to run Tezos (more precisely, the “Octez” implementation of Tezos software) on any network (either on the mainnet or on one of the test networks). Octez consists of several binaries (i.e., executable files), including: a client, a node, and a baker.

There are several options for getting the binaries, depending on how you plan to use Octez:

  • getting static binaries. This is the easiest way to get native binaries for the latest stable release, requiring no dependencies, under Linux.

  • installing binaries. This is the easiest way to install native binaries for the latest stable release, together with their dependencies, using a package manager.

  • using docker images. This is the easiest way to run the latest stable release of the binaries in Docker containers, on any OS supported by Docker.

  • building the binaries via the OPAM source package manager. Take this way to install the latest stable release in your native OS environment, automatically built from sources.

  • setting up a complete development environment by compiling the sources like developers do. This is the way to take if you plan to contribute to the source code. It allows to install any version you want (typically, the current development version on the master branch) by compiling it yourself from the sources.

These different options are described in the following sections.

Some Octez binaries also require some parameter files to run. Only some of the packaged distributions include such parameter files. Therefore, depending on the type of installation and your user profile, you may have to install some extra parameter files separately. Their installation is currently described in section Setting up the development environment from scratch, but those instructions may be used for other installation types:

Note that some of the packaged distributions are not only available for the latest stable release. For instance, static binaries are also available for release candidates, and Docker images are also available for the current development version (see Release System for more information).

When choosing between the installation options, you may take into account the convenience of the installation step (and of upgrading steps), but also efficiency and security considerations. For instance, static binaries have a different memory footprint compared to dynamically-linked binaries. Also, compiling the sources in the official Octez repository is more secure than installing OPAM packages from a repository that is not under Tezos control. In particular, compiling from sources enforces a fixed set of dependencies; when compiling via OPAM, this set of dependencies may change, which may or may not be compatible with your security practices.

All our installation scenarios are tested daily, including by automated means, to ensure that they are correct and up to date. These tests are performed by applying scenarios in several standard environments, from scratch. However, if you encounter problems when performing one of the installation scenarios in your own environment, you may want to take a look at Installation troubleshooting.

Getting static binaries#

You can get static Linux binaries of the latest release from the Octez package registry.

This repository provides static binaries for x86_64 and arm64 architectures. Since these binaries are static, they can be used on any Linux distribution without any additional prerequisites. However, note that, by embedding all dependencies, static binary executables are typically much larger than dynamically-linked executables.

For upgrading to a newer release, you just have to download and run the new versions of the binaries.

Installing binaries#

Depending on your operating system, you may install Octez (dynamically-linked) binaries and their dependencies by first downloading the packages for your distribution from the Octez release page, browsing to your distribution and then installing them with your package tool manager. Most of the configuration options are accessible by the user in /etc/default/<package>.

If you are upgrading from a different package distributor such as Serokell’s tezos-packaging, please pay attention to the possible differences between the two packages, in particular regarding the home directory for the tezos user.

There are several packages:

  • octez-client: the client for manipulating wallets and signing items

  • octez-node: the Octez node

  • octez-baker: the Octez baking and VDF daemons

  • octez-smartrollup: the Octez Smart Rollup daemons

  • octez-signer: the remote signer, to hold keys on (and sign from) a different machine from the baker or client

Ubuntu and Debian Octez packages#

If you’re using Ubuntu or Debian, you can also install packages with Octez binaries using apt directly from our APT repository, instead of going to the Octez release page as explained above.


This APT repository is currently empty. For installing the latest release (Version 20.1), you must still use the installation method above.

We support the following distribution/releases: - debian/bookworm - ubuntu/focal - ubuntu/jammy

both on amd64 and arm64 architectures.

In order to add the Tezos package repository to your machine, do:

export distribution=debian
export release=bookworm
export bucket="tezos-linux-repo"

and run:

REPO="deb https://$$distribution $release main"
sudo curl "https://$$distribution/octez.asc" | sudo gpg --dearmor -o /etc/apt/trusted.gpg.d/octez.gpg
echo "$REPO" | sudo tee /etc/apt/sources.list.d/octez.list
sudo apt-get update

We also maintain a separate repository for release candidates. To install the last release candidate simply prepend RC/ to the distribution name as in export distribution=RC/debian

Then, to install the binaries, run the following commands:

sudo apt-get install -y octez-client
sudo apt-get install -y octez-node
sudo apt-get install -y octez-baker

Also there are some experimental packages:

  • octez-experimental - binaries that are considered experimental including the Alpha baker

  • octez-evm-node - the EVM endpoint node for Etherlink

The packages are set up to run under a dedicated user. The octez-node, octez-baker and octez-smartrollup packages use a user and group called tezos. The octez-signer package uses a user and group called tzsigner. It’s possible to configure the software to use a different user (even root).

The documentation for these packages, originally developed by Chris Pinnock, can be found here:

Fedora Octez packages#

If you’re using Fedora, you can install packages with Octez binaries from the Octez release page indicated above using rpm or dnf. Currently it supports the latest LTS release for Fedora and for RockyLinux.

Upgrading to a new or more recent release requires downloading again all the rpm packages and repeat the installation.

For example using yum:

yum install ./octez-client-19.1-1.x86_64.rpm

Using Docker Images And Docker-Compose#

For every change committed in the GitLab repository, Docker images are automatically generated and published on DockerHub. This provides a convenient way to run an always up-to-date octez-node.

One way to run those Docker images is with docker-compose. We provide docker-compose files for all active protocols. You can pick one and start with the following command (we’ll assume alpha on this guide):

cd scripts/docker
export LIQUIDITY_BAKING_VOTE=pass # You can choose between 'on', 'pass' or 'off'.
docker-compose -f alpha.yml up

The above command will launch a node, a client, a baker, and an accuser for the Alpha protocol.

You can open a new shell session and run docker ps in it, to display all the available containers, e.g.:

8f3638fae48c  octez-node            3 minutes ago  Up 3 minutes ago>8732/tcp,>9732/tcp  node-alpha
8ba4d6077e2d  octez-baker --liq...  3 minutes ago  Up 31 seconds ago                                                  baker-alpha
3ee7fcbc2158  octez-accuser         3 minutes ago  Up 35 seconds ago                                                  accuser-alpha

The node’s RPC interface will be available on localhost and can be queried with octez-client.

docker exec node-alpha octez-client rpc list

Building Docker Images Locally#

The docker image used throughout the docker-compose files is fetched from upstream, but you can also build one locally and reference it. Run the following command to build the image:


And then update the docker-compose file (e.g., alpha.yml) with the docker tag:

  image: tezos:latest

Docker Image Configuration#

Lastly, the entrypoint script (scripts/docker/ provides the following configurable environment variables:

  • DATA_DIR: The directory to store the node’s data (defaults to /var/run/tezos).

  • NODE_HOST: The name of the node container (defaults to node).

  • NODE_RPC_PORT: The RPC port inside the container the node listens to (defaults to 8732).

  • NODE_RPC_ADDR: The RPC address inside the container the node binds to (defaults to [::]).

  • PROTOCOL: The protocol used.

These variables can be set in the docker-compose file, as demonstrated in alpha.yml:

    PROTOCOL: alpha

If the above options are not enough, you can always replace the default entrypoint and command fields.

version: "3"
    container_name: node-alpha
    entrypoint: /bin/sh
    command: /etc/
      - ./
      - ...
      PROTOCOL: alpha

Building from sources via OPAM#

The easiest way to build the binaries from the source code is to use the OPAM source package manager for OCaml.

This is easier than setting up a complete development environment, like developers do. However, this method is recommended for expert users as it requires basic knowledge of the OPAM package manager and the OCaml packages workflow. In particular, upgrading Octez from release to release might require tinkering with different options of the OPAM package manager to adjust the local environment for the new dependencies.


Currently Octez is being developed for Linux x86_64, mostly for Ubuntu and Fedora Linux. The following OSes are also reported to work: macOS (x86_64), Arch Linux ARM (aarch64), Debian Linux (x86_64). A Windows port is feasible and might be developed in the future.


If you build the binaries by using the following instructions inside a Docker container, you have to give extended privileges to this container, by passing option --privileged to the docker run command.


Mixing LLVM and GNU binutils toolchains can cause issues when building Octez. If you encounter an error like this, it may be that you have tools from both LLVM and GNU in scope.

Error: ExternalToolError { reason: "Failed to create archive index with `ranlib`", tool: "ranlib", args: ["liboctez_rust_deps.a"], stdout: "", stderr: "LLVM ERROR: Invalid encoding\n" }

In this case, refer to Mixing LLVM and GNU binutils.

Install OPAM#

First, you need to install the OPAM package manager, at least version 2.1, that you can get by following the install instructions.

After the first install of OPAM, use opam init --bare to set it up while avoiding to compile an OCaml compiler now, as this will be done in the next step.

Install Octez OPAM packages#

The latest Octez release is available (as soon as possible after the release) directly as OPAM packages.


Every file related to OPAM is (by default) in $HOME/.opam which means that, first, OPAM installs are user-specific and, second, you can get rid of everything by removing this directory (+ updating your rc files ($HOME/.bashrc, $HOME/.profile, $HOME/.zshrc, $HOME/.emacs, …) if you asked/allowed OPAM to add some lines in them).

The binaries need a specific version of the OCaml compiler (see the value of variable $ocaml_version in file scripts/ To get an environment with it do:

wget -O
opam switch create for_tezos $ocaml_version
eval $(opam env)


The opam switch create command may fail if the switch already exists; you are probably re-installing or upgrading an existing installation. If the required compiler version has not changed since the last time, you may simply ignore this error. Otherwise, you are upgrading to a new compiler, so look at the relevant section below.

The command eval $(opam env) sets up required environment variables. OPAM will suggest to add it in your rc file. If, at any point, you get an error like octez-something: command not found, first thing to try is to (re)run eval $(opam env --switch $ocaml_version) (replace $ocaml_version with its value in scripts/ to see if it fixes the problem.


If an OPAM commands times out, you may allocate it more time for its computation by setting the OPAMSOLVERTIMEOUT environment variable (to a number of seconds), e.g. by adding OPAMSOLVERTIMEOUT=1200 before the command. If no timeout occurs, you may omit this part.

Now, install all the binaries by:

opam install octez

You can be more specific and only opam install octez-node, opam install octez-baker-alpha, …


Note that opam install octez-client and opam install octez-signer are “minimal” and do not install the support for Ledger Nano devices. To enable it, run opam install ledgerwallet-tezos in addition to installing the binaries. (The macro meta-package tezos installs ledgerwallet-tezos.)

Updating via OPAM#

Installation via OPAM is especially convenient for updating to newer versions. Once some libraries/binaries are installed and new versions released, you can update by:

opam update
opam upgrade

It is recommended to also run the command opam remove -a in order to remove the dependencies installed automatically and not needed anymore. Beware not uninstall too much though.

Identified situations where it will be more tricky are:

  • When the OCaml compiler version requirement changes. In this case, you have several possibilities:

    • Be explicit about the “upgrade” and do opam upgrade --unlock-base ocaml.$new_version tezos. Note that starting from OPAM version 2.1, this option is replaced by --update-invariant (see the opam-switch manual).

    • Remove the existing switch (e.g., opam switch remove for_tezos, but be aware that this will delete the previous installation), and replay the installation instructions.

    • Replay the installation instructions while creating a different switch (e.g. ocaml_${ocaml_version}_for_tezos), but be aware that each switch consumes a significant amount of disk space.

  • When there are Rust dependencies involved. The way to go is still unclear. The solution will be defined when delivering the first release with Rust dependencies.

Setting up the development environment from scratch#

If you plan to contribute to the Octez codebase, the way to go is to set up a complete development environment, by cloning the repository and compiling the sources using the provided makefile.

TL;DR: From a fresh Debian Bookworm x86_64, you typically want to select a source branch in the Octez repository, e.g.:


and then do:

# [Temporary fix: removes tezos folder from PATH if added with Octez <= v13 instructions]
sudo apt-get install -y rsync git m4 build-essential patch unzip wget opam jq bc
# [install rust]
chmod +x
./ --profile minimal --default-toolchain 1.74.0 -y
# [source cargo]
. $HOME/.cargo/env
# [get sources]
git clone"$REPO".git tezos
cd tezos
git checkout $BRANCH
# [install Octez dependencies]
opam init --bare
make build-deps
# [compile sources]
eval $(opam env)
# [optional setup]
# puts Octez binaries in PATH:
# export PATH=$PWD/_build/install/default/bin/:$PATH
# if using bash, enables autocompletion:
# source ./src/bin_client/
# removes Mainnet/testnet disclaimers:


If you are updating to Octez v14 using a development environment which had been used to build Octez versions up to v13.x, and also you have previously exported the tezos directory to the $PATH environment variable, the following stanza is necessary to avoid potential issues with opam in the make build-deps step:


Otherwise, it is possible for make build-deps to fail with the following (or a similar) error:

make: opam: Permission denied
Makefile:53: *** Unexpected opam version (found: , expected: 2.*).  Stop.

The following sections describe the individual steps above in more detail.


Besides compiling the sources, it is recommended to also install Python and some related tools, which are needed, among others, to build the documentation and to use the Git pre-commit hook.

Install Rust#

Compiling Octez requires the Rust compiler (see recommended version in variable $recommended_rust_version in file scripts/ and the Cargo package manager to be installed. If you have rustup installed, it should work without any additional steps on your side. You can use rustup to install both. If you do not have rustup, please avoid installing it from Snapcraft; you can rather follow the simple installation process shown below:

chmod +x
./ --profile minimal --default-toolchain 1.74.0 -y

Once Rust is installed, note that your PATH environment variable (in .profile) may be updated and you will need to restart your session so that changes can be taken into account. Alternatively, you can do it manually without restarting your session:

. $HOME/.cargo/env

Note that the command line above assumes that rustup installed Cargo in $HOME/.cargo, but this may change depending on how you installed rustup. See the documentation of your rustup distribution if file .cargo does not exist in your home directory.

Install Zcash Parameters#

Octez binaries require the Zcash parameter files to run. Docker images come with those files, and the source distribution also includes those files. But if you compile from source and move Octez to another location (such as /usr/local/bin), the Octez binaries may prompt you to install the Zcash parameter files. The easiest way is to download and run this script:

chmod +x

The node will try to find Zcash parameters in the following directories, in this order:

  1. $XDG_DATA_HOME/.local/share/zcash-params

  2. $XDG_DATA_DIRS/zcash-params (if $XDG_DATA_DIRS contains several paths separated by colons :, each path is considered)

  3. $OPAM_SWITCH_PREFIX/share/zcash-params

  4. ./_opam/share/zcash-params

  5. ~/.zcash-params

  6. ~/.local/share/zcash-params

  7. /usr/local/share/zcash-params

  8. /usr/share/zcash-params

If the node complains that it cannot find Zcash parameters, check that at least one of those directories contains both files sapling-spend.params and sapling-output.params. Here is where you should expect to find those files:

  • if you are compiling from source, parameters should be in _opam/share/zcash-params (you may need to run eval $(opam env) before running the node);

  • if you used, parameters should be in ~/.zcash-params.


Some operating systems may not be covered by the list of directories above. If Zcash is located elsewhere on your system (typically, on MacOS X), you may try creating a symbolic link such as: ln -s ~/Library/Application\ Support/ZcashParams ~/.zcash-params.

Note that the script downloads a third file containing parameters for Sprout (currently called sprout-groth16.params), which is not loaded by Sapling and can be deleted to save a significant amount of space (this file is much bigger than the two other files).

Install DAL trusted setup#

Users running DAL as slot producers need to have a set of cryptographic parameters (known as an SRS) installed in order to run their DAL node. The parameters can be retrieved via the following script:


Get the sources#

Octez git repository is hosted at GitLab. All development happens here. Do not use our GitHub mirror which we don’t use anymore and only mirrors what happens on GitLab.

Checkout the latest-release branch to use the latest release. Alternatively, you can checkout a specific version based on its tag.

Install Octez dependencies#

Install the OCaml compiler and the libraries that Octez depends on:

make build-deps

Alternatively, if you want to install extra development packages such as merlin, you may use the following command instead:

make build-dev-deps


  • These commands create a local OPAM switch (_opam folder at the root of the repository) where the required version of OCaml and OCaml Octez dependencies are compiled and installed (this takes a while but it’s only done once).

  • Be sure to eval $(scripts/ when you cd into the repository in order to be sure to load this local environment.

  • As the opam hook would overwrite the effects of eval $(scripts/ the script will disable the opam hook temporarily.

  • OPAM is meant to handle correctly the OCaml libraries but it is not always able to handle all external C libraries we depend on. On most systems, it is able to suggest a call to the system package manager but it currently does not handle version checking.

  • As a last resort, removing the _opam folder (as part of a git clean -dxf for example) allows to restart in a fresh environment.


Once the dependencies are installed we can update OPAM’s environment to refer to the new switch and compile the project:

eval $(opam env)

Lastly, you can also add the Octez binaries to your PATH variable, and after reading the Disclaimer a few hundred times you are allowed to disable it with TEZOS_CLIENT_UNSAFE_DISABLE_DISCLAIMER=Y.

You may also activate Bash autocompletion by executing:

source ./src/bin_client/


Note that if your shell is zsh, you may need extra configuration to customize shell completion (refer to the zsh documentation).


For updating to a new version, you typically have to update the sources by doing git pull in the tezos/ directory and replay the compilation scenario starting from make build-deps. You may also use make clean (and rm -Rf _opam/ if needed) before that, for restarting compilation in a fresh state.