jumppad

README

jumppad

Jumppad is a tool for building modern cloud native development environments. Using the Jumppad configuration language you can create OCI containers, Nomad/Kubernetes clusters and more.

Community

Join our community on Discord: https://discord.gg/ZuEFPJU69D

Questions

Is Jumppad like Terraform?

Kind of, but more about local environments rather than infrastructure

Why not use Docker Compose?

Docker Compose is one of our favourite tools but we found it does not manage dependencies particulary well. Compose also works on a really low level of abstraction. Jumppad addresses these missing features.

Is Jumppad just for Docker?

No, Jumppad is designed to work with Docker, Podman, Raw binaries, etc. At present we only have a Driver for Docker and Podman, but others are on our Roadmap.

Can I use Jumppad for anything other than Dev environments?

Yes, Jumppad can be used to create interactive documentation for your applications and redistributable demo environments to show off your tool or product.

Example Jumppad Config

The following snippets are examples of things you can build with Jumppad, for more detailed examples please see the Blueprints repo https://github.com/shipyard-run/blueprints

Kubernetes Cluster

k8s_cluster "k3s" {
  driver  = "k3s" // default

  nodes = 1 // default

  network {
    name = "network.cloud"
  }
}

helm "consul" {
  cluster = "k8s_cluster.k3s"
  chart = "./helm/consul-helm-0.16.2"
  values = "./helm/consul-values.yaml"

  health_check {
    timeout = "60s"
    pods = ["release=consul"]
  }
}

k8s_ingress "consul-http" {
  cluster = "k8s_cluster.k3s"
  service  = "consul-consul-server"

  network {
    name = "network.cloud"
  }

  port {
    local  = 8500
    remote = 8500
    host   = 18500
  }
}

Nomad Cluster

nomad_cluster "dev" {
  version = "v0.10.2"

  nodes = 1 // default

  network {
    name = "network.cloud"
  }
}

nomad_job "redis" {
  cluster = "nomad_cluster.dev"

  paths = ["./app_config/example2.nomad"]
  health_check {
    timeout = "60s"
    nomad_jobs = ["example_2"]
  }
}

nomad_ingress "nomad-http" {
  cluster  = "nomad_cluster.dev"
  job = ""
  group = ""
  task = ""

  port {
    local  = 4646
    remote = 4646
    host   = 14646
    open_in_browser = "/"
  }

  network  {
    name = "network.cloud"
  }
}

Docker Container

container "consul" {
  image   {
    name = "consul:1.6.1"
  }

  command = ["consul", "agent", "-config-file=/config/consul.hcl"]

  volume {
    source      = "./consul_config"
    destination = "/config"
  }

  network {
    name = "network.onprem"
    ip_address = "10.5.0.200" // optional
  }

  resources {
    # Max CPU to consume, 1024 is one core, default unlimited
    cpu = 2048
    # Pin container to specified CPU cores, default all cores
    cpu_pin = [1,2]
    # max memory in MB to consume, default unlimited
    memory = 1024
  }

  env {
    key ="abc"
    value = "123"
  }

  env {
    key ="SHIPYARD_FOLDER"
    value = "${shipyard()}"
  }

  env {
    key ="HOME_FOLDER"
    value = "${home()}"
  }
}

Podman support

Podman support is experimental and at present many features such as Kubernetes clusters do not work with rootless podman and require root access.

Enable the podman socket

Jumppad uses podman's API, which is compatible with the Docker Enginer API. To enable this, you need to run the podman socket as a group that your user has access to. The following example uses the docker group:

sudo sed '/^SocketMode=.*/a SocketGroup=docker' -i /lib/systemd/system/podman.socket

Then emable the podman socket service

sudo systemctl daemon-reload

sudo systemctl enable podman.socket
sudo systemctl enable podman.service
sudo systemctl start podman.socket
sudo systemctl start podman.service

For sockets to be writable they also require execute permission on the parent folder

sudo chmod +x /run/podman

Point your DOCKER_HOST environment variable at the socket

export DOCKER_HOST=unix:///run/podman/podman.sock

If you have the Docker CLI installed you should be able to contact the podman daemon using the standard Docker commands

docker ps

Default network

➜ sudo podman network ls
NETWORK ID    NAME    VERSION  PLUGINS
2f259bab93aa  podman  0.4.0    bridge,portmap,firewall,tuning

Registries

Image pull silently fails if there are no registries defined in podmans /etc/containers/registries.conf

echo -e "[registries.search]\nregistries = ['docker.io']" | sudo tee /etc/containers/registries.conf

DNS

Multiple network cause DNS resolution problems https://github.com/containers/podman/issues/8399

Enabling name resolution

Install dnsmasq

First ensure systemd is not using port 53 https://www.linuxuprising.com/2020/07/ubuntu-how-to-free-up-port-53-used-by.html

Install dnsmasq

sudo apt install dnsmasq

Configure dnsmasq for external name server resolution or external network connections will not work

Install the podman dns plugin

https://github.com/containers/dnsname/blob/main/README_PODMAN.md

Contributing

We love contributions to the project, to contribute, first ensure that there is an issue and that it has been acknowledged by one of the maintainers of the project. Ensuring an issue exists and has been acknowledged ensures that the work you are about to submit will not be rejected due to specifications or duplicate work. Once an issue exists, you can modify the code and raise a PR against this repo. We are working on increasing code coverage, please ensure that your work has at least 80% test coverage before submitting.

Testing:

The project has two types of tests, pure code Unit tests and Functional tests, which apply real blueprints to a locally-running Docker engine and test output.

Unit tests:

To run the unit tests you can use the make recipe make test_unit this runs the go test and excludes the functional tests.

jumppad on  master via 🐹 v1.13.5 on 🐳 v19.03.5 ()
➜ make test_unit
go test -v -race github.com/jumppad-labs/jumppad github.com/jumppad-labs/jumppad/cmd github.com/jumppad-labs/jumppad/pkg/clients github.com/jumppad-labs/jumppad/pkg/clients/mocks github.com/jumppad-labs/jumppad/pkg/config github.com/jumppad-labs/jumppad/pkg/providers github.com/jumppad-labs/jumppad/pkg/jumppad github.com/jumppad-labs/jumppad/pkg/utils
testing: warning: no tests to run
PASS
ok      github.com/jumppad-labs/jumppad        (cached) [no tests to run]
=== RUN   TestSetsEnvVar
--- PASS: TestSetsEnvVar (0.00s)
=== RUN   TestArgIsLocalRelativeFolder
--- PASS: TestArgIsLocalRelativeFolder (0.00s)
=== RUN   TestArgIsLocalAbsFolder
--- PASS: TestArgIsLocalAbsFolder (0.00s)
=== RUN   TestArgIsFolderNotExists
--- PASS: TestArgIsFolderNotExists (0.00s)
=== RUN   TestArgIsNotFolder
--- PASS: TestArgIsNotFolder (0.00s)
=== RUN   TestArgIsBlueprintFolder
--- PASS: TestArgIsBlueprintFolder (0.00s)
=== RUN   TestArgIsNotBlueprintFolder

Functional tests:

To run the functional tests ensure that Docker is running in your environment then run make test_functional. functional tests are executed with GoDog cucumber test runner for Go. Note: These tests execute real blueprints and can a few minutes to run.

➜ make test_functional
cd ./functional_tests && go test -v ./...
Feature: Docmentation
  In order to test the documentation feature
  something
  something

  Scenario: Documentation                                              # features/documentaion.feature:6
    Given the config "./test_fixtures/docs"                            # main_test.go:77 -> theConfig
2020-02-08T17:03:25.269Z [INFO]  Creating Network: ref=wan
2020-02-08T17:03:40.312Z [INFO]  Creating Documentation: ref=docs
2020-02-08T17:03:40.312Z [INFO]  Creating Container: ref=docs
2020-02-08T17:03:40.490Z [DEBUG] Attaching container to network: ref=docs network=wan
2020-02-08T17:03:41.187Z [INFO]  Creating Container: ref=terminal
2020-02-08T17:03:41.271Z [DEBUG] Attaching container to network: ref=terminal network=wan
    When I run apply                                                   # main_test.go:111 -> iRunApply
    Then there should be 1 network called "wan"                        # main_test.go:149 -> thereShouldBe1NetworkCalled
    And there should be 1 container running called "docs.docs.jumppad.dev" # main_test.go:115 -> thereShouldBeContainerRunningCalled
    And a call to "http://localhost:8080/" should result in status 200 #

# ...

3 scenarios (3 passed)
16 steps (16 passed)
3m6.79622s
testing: warning: no tests to run
PASS

Creating a release:

To create a release tag a commit git tag <semver> and push this to GitHub git push origin <semver> GitHub actions will build and create the release.