Nomad VS Docker Compose

Nomad[1] is one alternative that gives you the same infra-as-code warm and fuzzies but isn't a behemoth like k8s. It's simple to deploy, simple to operate and unless you're truly scaling big, it probably does everything you need.

I'm sure there are others in the same league that I don't know about. Maybe I'm just getting old but I'll never understand the rush to use k8s in teams of <100 developers.

[1] https://www.nomadproject.io/

Hashicorp Nomad? I ran it across a bunch of raspberry pis and proxmox VMs/LXCs. Being a Hashicorp product it plays well with Terraform. The only reason I swapped it out for k3s was upskilling for work.

[Nomad]

Lob’s core API has been fully migrated to HashiCorp's Nomad, Lob’s Next Generation service platform. This is a major milestone for the Nomad Project, the Platform Team, and Lob Engineering. This migration is the culmination of a year of R&D, months of practice migrating other Lob services, and weeks of work on this particular service. It’s absolutely worth celebrating for the complexity and customer impact.

Most of our API’s migration to Nomad happened in August, but the key feature of autoscaling was not working as expected. This turned out to be a bug in Nomad which James Douglas tracked down. The issue was recently fixed and autoscaling works as expected, completing the migration!

Nomad by HashiCorp

There's also https://pot.pizzamig.dev/ which even has a Nomad(https://www.nomadproject.io/) driver in case you want to "orchestrate" the jails(as in deploy many jails at the same time across multiple servers)

The check stanza runs a health check on the service Since the service is registered to Consul, the health check runs on Consul. The above health check is configured to run every 10 seconds, and is given 5 seconds for the health check query to succeed. Health checks in Nomad are similar to Kubernetes health checks.

Not sure if it fits here, and might be a little more complex than what you’re looking for, but Nomad is definitely worth a look.

I'd like to also mention hashicorp nomad + consul. They're worth evaluating.

Use docker compose to get up and running locally.

By following the provided steps and utilizing Docker Compose, developers can easily set up preview environments that automatically build and deploy with each commit, facilitating efficient code review and collaboration.

# Docker Compose Configuration # visit https://docs.docker.com/compose/ version: '3.8' services: # app service for your backend app: container_name: backend build: context: ./ dockerfile: Dockerfile environment: DATABASE_NAME: # DATABASE_NAME DATABASE_USER: # DATABASE_USER DATABASE_PASS: # DATABASE_PASS DATABASE_URI: # DATABASE_URI, example: mongodb://database:27017 ports: - '4000:4000' depends_on: - database # start the mongodb service as container database: image: mongo:6.0 container_name: mongodb restart: always ports: - '27017:27017' environment: MONGO_INITDB_ROOT_USERNAME: # DATABASE_NAME MONGO_INITDB_ROOT_PASSWORD: # DATABASE_USER

The Dev Container also supports building from a Dockerfile or even Docker Compose, here I will take the second one, I'll show you why in the following content.

Docker Compose is a tool for defining and running multi-container Docker applications. It allows you to define all the services that your application needs in a single file, called a docker-compose.yml file. With Docker Compose, you can start and stop all the containers that your application needs with a single command.

Finally, ZeroTier allows you to build custom virtual networks. It is similar to a virtual private network (VPN), but simpler, and it has other advantages. Many of the above applications (e.g. KDE Connect, Weylus) have one huge limitation; they only work on local networks (e.g. devices must be connected to the same WiFi). Furthermore, most enterprise networks (e.g. Eduroam at academic institutions) limit the communication among local devices connected to the network, which in turn prevents some of these applications from working. Using ZeroTier can circumvent that by routing the communication over a virtual network that you can create and customize yourself, and even assign each device a fixed IP address so you don’t have to worry about the device moving around. Moreover, if you want to host your own server that is behind multiple routers without a unique public IPv4, ZeroTier is a miracle, and nothing comes even close to easy of use in this case (not even routing all communication via VPN with a unique fixed public IPv4 - which is not that affordable). In this way, I use my old Raspberry Pi to host the RustDesk server and other services after wasting days on other alternatives (everything is deployed via balena in a single Docker Compose, but I won’t get carried away). If you want to try ZeroTier, check their Getting Started (it is free for the first 25 devices, and there is also an open source edition).

Docker Compose

It has actually been rewritten in Go: https://github.com/docker/compose/tree/v2

Docker Compose is a tool for setting up and running multiple Docker containers. This is a good use case for it, one docker compose up command could start and run all these services.