Installing Nomad

Nomad is available as a pre-compiled binary or as a package for several operating systems. You can also build Nomad from source.

If you are interested in trialing Nomad without installing it locally, see the Quickstart for options to get started with Nomad.

You can download a precompiled binary and run it on your machine locally. You can also verify the binary using the available SHA-256 sums. After downloading Nomad, unzip the package. Make sure that the nomad binary is available on your PATH before continuing with the other guides.

Homebrew is a free and open source package management system for Mac OS X. Install the official Nomad formula from the terminal.

First, install the HashiCorp tap, a repository of all of the HashiCorp Homebrew packages.

$ brew tap hashicorp/tap

Now, install Nomad with hashicorp/tap/nomad.

$ brew install hashicorp/tap/nomad

NOTE: This installs a signed binary and is automatically updated with every new official release.

To update to the latest, run

$ brew upgrade hashicorp/tap/nomad

Chocolatey is a free and open-source package management system for Windows. Install the Nomad package from the command-line.

$ choco install nomad

NOTE: Chocolatey and the Nomad package are NOT directly maintained by HashiCorp. The latest version of Nomad is always available by manual installation.

HashiCorp officially maintains and signs packages for the following Linux distributions.

Install the required packages.

$ sudo apt-get update && \
  sudo apt-get install wget gpg coreutils

Add the HashiCorp GPG key.

$ wget -O- https://apt.releases.hashicorp.com/gpg | sudo gpg --dearmor -o /usr/share/keyrings/hashicorp-archive-keyring.gpg

Add the official HashiCorp Linux repository.

$ echo "deb [signed-by=/usr/share/keyrings/hashicorp-archive-keyring.gpg] https://apt.releases.hashicorp.com $(lsb_release -cs) main" | sudo tee /etc/apt/sources.list.d/hashicorp.list

Update and install.

$ sudo apt-get update && sudo apt-get install nomad

Install yum-config-manager to manage your repositories.

$ sudo yum install -y yum-utils

Use yum-config-manager to add the official HashiCorp Linux repository.

$ sudo yum-config-manager --add-repo https://rpm.releases.hashicorp.com/RHEL/hashicorp.repo

Install.

$ sudo yum -y install nomad

Install dnf config-manager to manage your repositories.

$ sudo dnf install -y dnf-plugins-core

Use dnf config-manager to add the official HashiCorp Linux repository.

$ sudo dnf config-manager --add-repo https://rpm.releases.hashicorp.com/fedora/hashicorp.repo

Install.

$ sudo dnf -y install nomad

Install yum-config-manager to manage your repositories.

$ sudo yum install -y yum-utils

Use yum-config-manager to add the official HashiCorp Linux repository.

$ sudo yum-config-manager --add-repo https://rpm.releases.hashicorp.com/AmazonLinux/hashicorp.repo

Install.

$ sudo yum -y install nomad

TIP: Now that you have added the HashiCorp repository, you can install Consul and Vault with the same command.

Post-installation steps

These steps are considered optional but can be helpful for running Nomad and to take advantage of additional Nomad functionalities.

Add the Nomad binary to your system path

Permanently add a new location to your path by editing your shell's settings file (usually called something like ~/.bashrc, where the part of the filename after the . and before rc is the name of your shell). In that file you should see a line that starts with export PATH=, followed by a colon-separated list of locations. Add the location of the Nomad binary to that list and save the file. Then reload your shell's configuration with the command source ~/.bashrc, replacing bash with the name of your shell.

Install CNI plugins

Nomad uses CNI plugins to configure network namespaces when using the bridge network mode. All Linux Nomad client nodes using network namespaces must have CNI plugins installed.

The following commands install the CNI reference plugins.

$ curl -L -o cni-plugins.tgz "https://github.com/containernetworking/plugins/releases/download/v1.0.0/cni-plugins-linux-$( [ $(uname -m) = aarch64 ] && echo arm64 || echo amd64)"-v1.0.0.tgz && \
  sudo mkdir -p /opt/cni/bin && \
  sudo tar -C /opt/cni/bin -xzf cni-plugins.tgz

Ensure your Linux operating system distribution has been configured to allow container traffic through the bridge network to be routed via iptables. These tunables can be set as follows.

$ echo 1 | sudo tee /proc/sys/net/bridge/bridge-nf-call-arptables && \
  echo 1 | sudo tee /proc/sys/net/bridge/bridge-nf-call-ip6tables && \
  echo 1 | sudo tee /proc/sys/net/bridge/bridge-nf-call-iptables

To preserve these settings on startup of a client node, add a file including the following to /etc/sysctl.d/ or remove the file your Linux distribution puts in that directory.

/etc/sysctl.d/bridge.conf

net.bridge.bridge-nf-call-arptables = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1

Add the Nomad binary to your system path

Note that if you are running Nomad on Linux, you'll need to run client agents as root (or with sudo) so that cpuset accounting and network namespaces work correctly.

Install CNI plugins

Nomad uses CNI plugins to configure network namespaces when using the bridge network mode. All Linux Nomad client nodes using network namespaces must have CNI plugins installed.

The following commands install the CNI reference plugins.

$ curl -L -o cni-plugins.tgz "https://github.com/containernetworking/plugins/releases/download/v1.0.0/cni-plugins-linux-$( [ $(uname -m) = aarch64 ] && echo arm64 || echo amd64)"-v1.0.0.tgz && \
  sudo mkdir -p /opt/cni/bin && \
  sudo tar -C /opt/cni/bin -xzf cni-plugins.tgz

Ensure your Linux operating system distribution has been configured to allow container traffic through the bridge network to be routed via iptables. These tunables can be set as follows.

$ echo 1 | sudo tee /proc/sys/net/bridge/bridge-nf-call-arptables && \
  echo 1 | sudo tee /proc/sys/net/bridge/bridge-nf-call-ip6tables && \
  echo 1 | sudo tee /proc/sys/net/bridge/bridge-nf-call-iptables

To preserve these settings on startup of a client node, add a file including the following to /etc/sysctl.d/ or remove the file your Linux distribution puts in that directory.

/etc/sysctl.d/bridge.conf

net.bridge.bridge-nf-call-arptables = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1

Verify the Installation

To verify Nomad was installed correctly, try the nomad command.

$ nomad

You should see help output, similar to the following.

Usage: nomad [-version] [-help] [-autocomplete-(un)install] <command> [args]

Common commands:
    run         Run a new job or update an existing job
    stop        Stop a running job
    status      Display the status output for a resource
    alloc       Interact with allocations
    job         Interact with jobs
    node        Interact with nodes
    agent       Runs a Nomad agent

Other commands:
    acl             Interact with ACL policies and tokens
    agent-info      Display status information about the local agent
    deployment      Interact with deployments
    eval            Interact with evaluations
    exec            Execute commands in task
    monitor         Stream logs from a Nomad agent
    namespace       Interact with namespaces
    operator        Provides cluster-level tools for Nomad operators
    quota           Interact with quotas
    sentinel        Interact with Sentinel policies
    server          Interact with servers
    system          Interact with the system API
    ui              Open the Nomad Web UI
    version         Prints the Nomad version

Compiling from Source

To compile from source, you will need Go installed and configured properly (including a GOPATH environment variable set), as well as a copy of git in your PATH.

Clone the Nomad repository from GitHub into your GOPATH:

$ mkdir -p $GOPATH/src/github.com/hashicorp && cd $_
$ git clone https://github.com/hashicorp/nomad.git
$ cd nomad

Bootstrap the project. This will download and compile libraries and tools needed to compile Nomad:
```
$ make bootstrap
```
Build Nomad for your current system and put the binary in ./bin/ (relative to the git checkout). The make dev target is just a shortcut that builds nomad for only your local build environment (no cross-compiled targets).
```
$ make dev
```