HashiCorp Nomad is a workload scheduler and orchestrator that allows you to deploy and manage containerized or non-containerized, legacy applications using a single, unified workflow. Nomad uses bin packaging for efficient job scheduling and resource optimization, as well as enables developers to use declarative infrastructure-as-code for their deployments.
This one-click application deploys 6 compute instance types to create a highly available, redundant HashiCorp Nomad cluster. To scale your cluster beyond the 6 instances, deploy the HashiCorp Nomad Clients Cluster application. Learn more.
Note: This Marketplace App deploys 6 Compute Instances to create a highly available, redundant Hashicorp Nomad Cluster. The plan type and size you select is applied to each individual instance.
Please be aware that each Compute Instance will appear on your invoice as a separate item. If you would rather deploy Hashicorp Nomad on a single Compute Instance, see Deploy Hashicorp Nomad through the Linode Marketplace.
Note: There can only be one Marketplace Nomad Cluster per data center.
Configuration Options
- Supported distributions: Ubuntu 22.04 LTS
- Recommended plan: We recommend 8GB Dedicated CPU or 8GB Shared CPU instances for the Nomad Cluster.
Warning: Do not use a double quotation mark character (") within any of the App-specific configuration fields, including user and database password fields. This special character may cause issues during deployment.
Nomad Cluster Options
- Linode API Token (required): Your API token is used to deploy additional Compute Instances as part of this cluster. At a minimum, this token must have Read/Write access to Linodes. If you do not yet have an API token, see Get an API Access Token to create one.
- Limited sudo user (required): A limited user account with sudo access is created as part of this cluster deployment. Enter your preferred username for this limited user. Please note that the sudo password is automatically created and stored in the
~/.deployment_secrets.txtfile. See Accessing the Nomad Web UI below. - Email Address (required): A valid SOA email address for auto-generated LetsEncrypt SSL.
- Add SSH Keys to all nodes? If you select yes, any SSH Keys that are added to the root user account (in the SSH Keys section), are also added to your limited user account on all deployed Compute Instances.
- Total Instance Count: The Nomad Cluster will deploy 6 Compute Instances.ServersClientsTotal Instances336
- Nomad Server Count: The Nomad Cluster will deploy 3 Nomad servers.
- Nomad Client Count: The Nomad Cluster will deploy 3 Nomad clients.NoteSee Hashicorp’s Nomad Architecture documentation for more about how clients and servers function within the Nomad Cluster.
Getting Started after Deployment
- Use SSH to connect as the created sudo user of the initially deployed instance, labeled
occ-server-1. - Once logged in as your sudo user, view the contents of the file
~/.deployment-secrets.txt.cat ~/.deployment-secrets.txt`In this file, there are multiple generated tokens, as well as your limited sudo user password. These tokens are used for authenticating to the Nomad Web UI, adding Nomad clients to the cluster, managing jobs, and managing the Consul service mesh. Save the contents of this file somewhere secure as you will need the tokens later. - Open your web browser and navigate to
http://[rDNS], where[rDNS]is the reverse DNS address of your Compute Instance labeledserver-1. See our How to Configure rDNS guide for more information about viewing and editing rDNS. - The Nomad Web UI should be displayed with a link to enter a token. Click the token link, and enter the
nomad_user_tokenfrom the~/.deployment-secrets.txtfile (see above) to authenticate to the UI. - Once your token is authenticated, you can manage your cluster, jobs, integrations, and ACL tokens.
NoteHashiCorp recommends using mutual TLS (mTLS) with a private CA to secure cluster communications and the web UI. Please see the following HashiCorp documentation for more details:
Next Steps
The HashiCorp Nomad Cluster provides default configurations to get you started. We recommend reviewing HashiCorp’s Configuration and Job Spec documentation to customize your Nomad Cluster for your specific workload.
If you find that you need additional Clients for your Nomad Cluster, the Nomad Clients Cluster deployment allows you to scale horizontally by deploying 3, 5, or 7 additional Compute Instances as Clients.
The HashiCorp Nomad Marketplace app was built by Linode. For support regarding app deployment, contact Linode Support. For support regarding the tool or software itself, browse the Nomad Community Forum.
