Merge pull request #4 from komminarlabs/tk/node-red

added node-red pack

README.md

@@ -10,3 +10,4 @@ nomad-pack registry add default github.com/komminarlabs/nomad-pack-registry
 
 - [Grafana OSS](/packs/grafana/README.md)
 - [InfluxDB OSS](/packs/influxdb2/README.md)
+- [Node-RED](/packs/node-red/README.md)

packs/grafana/variables.hcl

@@ -15,7 +15,7 @@ variable "constraints" {
 }
 
 variable "consul_service" {
-  description = "The consul service for grafana."
+  description = "The consul service for Grafana."
   type = object({
     name     = string
     register = bool
@@ -29,7 +29,7 @@ variable "consul_service" {
 }
 
 variable "data_volume" {
-  description = "The dedicated data volume you want InfluxDB to use."
+  description = "The dedicated data volume you want Grafana to use."
   type = object({
     type   = string
     source = string

packs/node-red/CHANGELOG.md

@@ -0,0 +1,3 @@
+# 0.1.0
+
+- Initial release

packs/node-red/README.md

@@ -0,0 +1,16 @@
+# Node-RED
+
+This pack uses Docker driver to deploy Node-RED in Nomad.
+
+## Variables
+
+- `docker_env_vars` (map of string) - Environment variables to pass to Docker container.
+- `node_pool` (string) - The node_pool where the job should be placed.
+- `nodered_task_resources` (object) - The resource to assign to the Node-RED service task.
+- `constraints` (list of object) - Constraints to apply to the entire job.
+- `data_volume` (object) - The dedicated data volume you want Node-RED to use.
+- `namespace` (string) - The namespace where the job should be placed.
+- `nodered_version_tag` (string) - The docker image version.
+- `region` (string) - The region where the job should be placed.
+- `consul_service` (object) - The consul service for Node-RED.
+- `datacenters` (list of string) - A list of datacenters in the region which are eligible for task placement.

packs/node-red/metadata.hcl

@@ -0,0 +1,16 @@
+app {
+  url    = "https://nodered.org/"
+  author = "Node-RED"
+}
+
+pack {
+  name        = "node-red"
+  description = "Low-code programming for event-driven applications."
+  url         = "https://github.com/komminarlabs/nomad-pack-registry/node-red"
+  version     = "0.1.0"
+}
+
+integration {
+  identifier = "nomad/komminarlabs/node-red"
+  name       = "Node-RED"
+}

packs/node-red/outputs.tpl

@@ -0,0 +1,3 @@
+Congrats on deploying [[ meta "pack.name" . ]].
+
+There are [[ var "app_count" . ]] instances of your job now running on Nomad.

packs/node-red/overrides.hcl

@@ -0,0 +1,9 @@
+data_volume = {
+  name = "nodered_data_volume"
+  type = "host"
+}
+
+docker_env_vars = {
+  "NODE_VERSION" : "20",
+  "NODE_RED_VERSION" : "4.0.2",
+}

packs/node-red/templates/node-red.nomad.tpl

@@ -0,0 +1,93 @@
+job "node-red" {
+  region      = "[[ var "region" . ]]"
+  datacenters = [[ (var "datacenters" .) | toStringList ]]
+  node_pool   = "[[ var "node_pool" . ]]"
+  type        = "service"
+  [[- if var "namespace" . ]]
+  namespace   = "[[ var "namespace" . ]]"
+  [[- end ]]
+
+  [[- if var "constraints" . ]][[ range $idx, $constraint := var "constraints" . ]]
+  
+  constraint {
+    [[- if ne $constraint.attribute "" ]]
+    attribute = "[[ $constraint.attribute ]]"
+    [[- end ]]
+    [[- if ne $constraint.value "" ]]
+    value = "[[ $constraint.value ]]"
+    [[- end ]]
+    [[- if ne $constraint.operator "" ]]
+    operator = "[[ $constraint.operator ]]"
+    [[- end ]]
+  }
+  [[- end ]]
+  [[- end ]]
+
+  group "node-red" {
+    count = 1
+
+    network {
+      port "http" {
+        static = 1880
+      }
+    }
+
+    [[- if var "consul_service.register" . ]]
+
+    service {
+      name = "[[ var "consul_service.name" . ]]"
+      [[- if ne (len (var "consul_service.tags" .)) 0 ]]
+      tags = [[ (var "consul_service.tags" .) | toStringList ]]
+      [[- end ]]
+      port = "http"
+
+      check {
+        name     = "alive"
+        type     = "tcp"
+        interval = "10s"
+        timeout  = "2s"
+      }
+    }
+    [[- end ]]
+
+    [[- if var "data_volume" . ]]
+    volume "[[ var "data_volume.name" . ]]" {
+      type      = "[[ var "data_volume.type" . ]]"
+      read_only = false
+      source    = "[[ var "data_volume.name" . ]]"
+    }
+    [[- end ]]
+
+    task "node-red" {
+      driver = "docker"
+
+      [[- if var "data_volume" . ]]
+
+      volume_mount {
+        volume      = "[[ var "data_volume.name" . ]]"
+        destination = "/data"
+        read_only   = false
+      }
+      [[- end ]]
+
+      config {
+        image = "nodered/node-red:[[ var "nodered_version_tag" . ]]"
+        ports = ["http"]
+      }
+
+      resources {
+        cpu    = [[ var "nodered_task_resources.cpu" . ]]
+        memory = [[ var "nodered_task_resources.memory" . ]]
+      }
+
+      [[- if ne (len (var "docker_env_vars" .)) 0 ]]
+
+      env {
+        [[- range $key, $var := var "docker_env_vars" . ]]
+        [[if ne (len $var) 0 ]][[ $key | upper ]] = [[ $var | quote ]][[ end ]]
+        [[- end ]]
+      }
+      [[- end ]]
+    }
+  }
+}

packs/node-red/variables.hcl

@@ -0,0 +1,85 @@
+variable "constraints" {
+  description = "Constraints to apply to the entire job."
+  type = list(object({
+    attribute = string
+    operator  = string
+    value     = string
+  }))
+  default = [
+    {
+      attribute = "$${attr.kernel.name}",
+      value     = "(linux|darwin)",
+      operator  = "regexp",
+    },
+  ]
+}
+
+variable "consul_service" {
+  description = "The consul service for Node-RED."
+  type = object({
+    name     = string
+    register = bool
+    tags     = list(string)
+  })
+  default = {
+    name     = "nodered",
+    register = true,
+    tags     = [],
+  }
+}
+
+variable "data_volume" {
+  description = "The dedicated data volume you want Node-RED to use."
+  type = object({
+    type   = string
+    source = string
+  })
+}
+
+variable "datacenters" {
+  description = "A list of datacenters in the region which are eligible for task placement."
+  type        = list(string)
+  default     = ["dc1"]
+}
+
+variable "docker_env_vars" {
+  type        = map(string)
+  description = "Environment variables to pass to Docker container."
+  default     = {}
+}
+
+variable "namespace" {
+  description = "The namespace where the job should be placed."
+  type        = string
+  default     = "default"
+}
+
+variable "node_pool" {
+  description = "The node_pool where the job should be placed."
+  type        = string
+  default     = "default"
+}
+
+variable "nodered_task_resources" {
+  description = "The resource to assign to the Node-RED service task."
+  type = object({
+    cpu    = number
+    memory = number
+  })
+  default = {
+    cpu    = 500,
+    memory = 256,
+  }
+}
+
+variable "nodered_version_tag" {
+  description = "The docker image version."
+  type        = string
+  default     = "4.0.2-22"
+}
+
+variable "region" {
+  description = "The region where the job should be placed."
+  type        = string
+  default     = "global"
+}