heron/config/src/yaml/conf/nomad/scheduler.yaml

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# scheduler class for distributing the topology for execution
heron.class.scheduler:                       org.apache.heron.scheduler.nomad.NomadScheduler

# launcher class for submitting and launching the topology
heron.class.launcher:                        org.apache.heron.scheduler.nomad.NomadLauncher

# working directory for the topologies
heron.scheduler.local.working.directory:     ${HOME}/.herondata/topologies/${CLUSTER}/${ROLE}/${TOPOLOGY_ID}

# location of java - pick it up from shell environment
heron.directory.sandbox.java.home:           $JAVA_HOME

# The URI of Nomad API
heron.nomad.scheduler.uri:             http://127.0.0.1:4646

#Invoke the IScheduler as a library directly
heron.scheduler.is.service:                  False

# The nomad schedules CPU resources in terms of clock frequency (e.g. MHz), while Heron topologies
# specify CPU requests in term of cores.  This config maps core to clock freqency.
heron.nomad.core.freq.mapping: 2000

# specify whether to run heron via raw java execs or in docker containers
# options: docker or raw_exec
heron.nomad.driver: "docker"

# The docker image to use for heron if the docker driver is used,
heron.executor.docker.image: 'apache/heron:latest'

# Set networking mode networking when driver is docker
heron.nomad.network.mode: "default"

# whether to register metrics service endpoints for prometheus metrics sink in consul
# the service will be named in the format: metrics-heron-<topology-name>-<container-index>
heron.nomad.metrics.service.register: True

# interval at which health checks should be conducted for metrics service endpoint
heron.nomad.metrics.service.check.interval.sec: 10

# timeout of metrics service endpoint health check
heron.nomad.metrics.service.check.timeout.sec: 2

# additional tags to be attached to metrics service
# A tag of <topology-name>-<container-index> with be automatically attached
heron.nomad.metrics.service.additional.tags: "prometheus,metrics,heron"