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installation.md

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To start playing with Zenoh we need the Zenoh router and/or the Zenoh client library.

Installing client library

To develop your application Zenoh, you need to install a Zenoh client library. Depending on your programming language, pick one of the following API and refer to the installation and usage instructions in here:

Note that if you wish to always have access to all of Zenoh's latest features, Rust is Zenoh's original language, and will therefore always be the most feature-complete version.

Installing the Zenoh router

The Zenoh router (a.k.a. zenohd) and its plugins are currently available as pre-built binaries for various platforms. All release packages can be downloaded from:

Each subdirectory has the name of the Rust target. See the platforms each target corresponds to on https://doc.rust-lang.org/stable/rustc/platform-support.html

You can also install it via a package manager on macOS (homebrew) or Linux Debian (apt). See instructions below.

For other platforms, you can use the Docker image or build it directly on your platform.

MacOS

Tap our brew package repository:

$ brew tap eclipse-zenoh/homebrew-zenoh

Install Zenoh:

$ brew install zenoh

Then you can start the Zenoh router with this command:

$ zenohd

Ubuntu or any Debian

Add Eclipse Zenoh private repository to the sources list:

$ echo "deb [trusted=yes] https://download.eclipse.org/zenoh/debian-repo/ /" | sudo tee -a /etc/apt/sources.list > /dev/null
$ sudo apt update

Install Zenoh:

$ sudo apt install zenoh

Then you can start the Zenoh router with this command:

$ zenohd

Windows

Download the Zenoh archive from https://download.eclipse.org/zenoh/zenoh/latest/ :

  • For Windows 64 bits: get the x86_64-pc-windows-msvc/zenoh-<version>-x86_64-pc-windows-msvc.zipfile

Unzip the archive.

Go to Zenoh directory and start Zenoh router:

> cd C:\path\to\zenoh\dir
> zenohd.exe

Testing Your Installation

To test the installation, try to see the Zenoh man page by executing the following command:

$ zenohd --help

You should see the following output on your console:

2024-08-12T13:27:29.724708Z  INFO main ThreadId(01) zenohd: zenohd v0.11.0-dev-965-g764be602d built with rustc 1.75.0 (82e1608df 2023-12-21)
The zenoh router

Usage: zenohd [OPTIONS]

Options:
  -c, --config <PATH>
          The configuration file. Currently, this file must be a valid JSON5 or YAML file

  -l, --listen <ENDPOINT>
          Locators on which this router will listen for incoming sessions. Repeat this option to open several listeners

  -e, --connect <ENDPOINT>
          A peer locator this router will try to connect to. Repeat this option to connect to several peers

  -i, --id <ID>
          The identifier (as an hexadecimal string, with odd number of chars - e.g.: A0B23...) that zenohd must use. If not set, a random unsigned 128bit integer will be used. WARNING: this identifier must be unique in the system and must be 16 bytes maximum (32 chars)!

  -P, --plugin <PLUGIN>
          A plugin that MUST be loaded. You can give just the name of the plugin, zenohd will search for a library named 'libzenoh_plugin_\<name\>.so' (exact name depending the OS). Or you can give such a string: "\<plugin_name\>:\<library_path\>" Repeat this option to load several plugins. If loading failed, zenohd will exit

      --plugin-search-dir <PATH>
          Directory where to search for plugins libraries to load. Repeat this option to specify several search directories

      --no-timestamp
          By default zenohd adds a HLC-generated Timestamp to each routed Data if there isn't already one. This option disables this feature

      --no-multicast-scouting
          By default zenohd replies to multicast scouting messages for being discovered by peers and clients. This option disables this feature

      --rest-http-port <SOCKET>
          Configures HTTP interface for the REST API (enabled by default on port 8000). Accepted values: - a port number - a string with format `<local_ip>:<port_number>` (to bind the HTTP server to a specific interface) - `none` to disable the REST API

      --cfg <CFG>
          Allows arbitrary configuration changes as column-separated KEY:VALUE pairs, where: - KEY must be a valid config path. - VALUE must be a valid JSON5 string that can be deserialized to the expected type for the KEY field.
          
          Examples: - `--cfg='startup/subscribe:["demo/**"]'` - `--cfg='plugins/storage_manager/storages/demo:{key_expr:"demo/example/**",volume:"memory"}'`

      --adminspace-permissions <[r|w|rw|none]>
          Configure the read and/or write permissions on the admin space. Default is read only

  -h, --help
          Print help (see a summary with '-h')

  -V, --version
          Print version