HashiCorp Nomad Operation for Java Application

nomad-operation-for-java-app.hcl

# task for Java Application
# 
# Download this file: 
# curl -sSL https://gist.githubusercontent.com/ryanpadilha/5854213edbad8a9698c72c8a6dc66e24/raw/ -o nomad-operation-for-java-app.hcl
#
# Operation for job execution:
#
# validate job      - $ nomad validate nomad-operation-for-java-app.hcl
# plan job          - $ nomad plan nomad-operation-for-java-app.hcl
# execution plan    - $ nomad run -check-index 55 nomad-operation-for-java-app.hcl
# execution status  - $ nomad status vulcano-health-check-monitor
# verify error exec - $ nomad alloc-status -verbose 5f33b395-d370-7ebb-851c-287811143041 
# 

job "vulcano-health-check-monitor" {
  datacenters = ["dc1"] # "us-west-1", "us-east-1"
  type = "service"
  
  group "java" {
    count = 1
    
    task "java-application" {
      driver = "java"
      user = "nomad"

      config {
        jar_path = "${NOMAD_META_AWS_PATH}/lib/vulcano-health-check-monitor-${NOMAD_META_APP_VERSION}.jar"
        jvm_options = ["-Xms64m", "-Xmx256m",
          "-Dspring.config.location=${NOMAD_META_AWS_CONFIG}/application-prd-health-monitor.properties"]
      }

      # TODO verify register this on Consul by service element
      # service { }
    
      # artifact used to ship the jar to run
      # download from http, https, git, hg, s3 - automatic unarchived
      artifact {
        source = "https://s3-sa-east-1.amazonaws.com/nomad-artifact/vulcano-health-check-monitor-0.0.1-dev.tar.gz"
        destination = "/var/wplex/apps"
        options {
          aws_access_key_id = "AKIAI2ZEQ7JXLSS3UW7Q"
          aws_access_key_secret = "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"
          # aws_access_token = "<token>"
        }
      }
    
      meta {
        AWS_PATH = "/var/wplex/apps/vulcano-health-check-monitor"
        AWS_CONFIG = "/var/wplex/apps/config"
        APP_VERSION = "0.0.1"
      }
    }
  }

  # constraints defined after task is placed on a node
  constraint {
    attribute = "${attr.kernel.name}"
    value = "linux"
  }
  
  constraint {
    attribute = "${attr.cpu.arch}"
    value     = "amd64"
  }

  #constraint {
  #  attribute = "${attr.platform.aws.instance-type}"
  #  value     = "m4.xlarge"
  #}
  
  constraint {
      attribute = "${attr.driver.java.version}"
      operator  = ">="
      value     = "1.8.0"
  }
}