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job "${job_name}" {
# The "region" parameter specifies the region in which to execute the job.
# If omitted, this inherits the default region name of "global".
# region = "global"
#
# The "datacenters" parameter specifies the list of datacenters which should
# be considered when placing this task. This must be provided.
datacenters = "${datacenters}"
# The "type" parameter controls the type of job, which impacts the scheduler's
# decision on placement. This configuration is optional and defaults to
# "service". For a full list of job types and their differences, please see
# the online documentation.
#
# For more information, please see the online documentation at:
#
# https://www.nomadproject.io/docs/jobspec/schedulers.html
#
type = "service"
update {
# The "max_parallel" parameter specifies the maximum number of updates to
# perform in parallel. In this case, this specifies to update a single task
# at a time.
max_parallel = 1
health_check = "checks"
# The "min_healthy_time" parameter specifies the minimum time the allocation
# must be in the healthy state before it is marked as healthy and unblocks
# further allocations from being updated.
min_healthy_time = "10s"
# The "healthy_deadline" parameter specifies the deadline in which the
# allocation must be marked as healthy after which the allocation is
# automatically transitioned to unhealthy. Transitioning to unhealthy will
# fail the deployment and potentially roll back the job if "auto_revert" is
# set to true.
healthy_deadline = "3m"
# The "progress_deadline" parameter specifies the deadline in which an
# allocation must be marked as healthy. The deadline begins when the first
# allocation for the deployment is created and is reset whenever an allocation
# as part of the deployment transitions to a healthy state. If no allocation
# transitions to the healthy state before the progress deadline, the
# deployment is marked as failed.
progress_deadline = "10m"
%{ if use_canary }
# The "canary" parameter specifies that changes to the job that would result
# in destructive updates should create the specified number of canaries
# without stopping any previous allocations. Once the operator determines the
# canaries are healthy, they can be promoted which unblocks a rolling update
# of the remaining allocations at a rate of "max_parallel".
#
# Further, setting "canary" equal to the count of the task group allows
# blue/green deployments. When the job is updated, a full set of the new
# version is deployed and upon promotion the old version is stopped.
canary = 1
# Specifies if the job should auto-promote to the canary version when all
# canaries become healthy during a deployment. Defaults to false which means
# canaries must be manually updated with the nomad deployment promote
# command.
auto_promote = true
# The "auto_revert" parameter specifies if the job should auto-revert to the
# last stable job on deployment failure. A job is marked as stable if all the
# allocations as part of its deployment were marked healthy.
auto_revert = true
%{ endif }
}
# All groups in this job should be scheduled on different hosts.
constraint {
operator = "distinct_hosts"
value = "true"
}
# The "group" stanza defines a series of tasks that should be co-located on
# the same Nomad client. Any task within a group will be placed on the same
# client.
#
# For more information and examples on the "group" stanza, please see
# the online documentation at:
#
# https://www.nomadproject.io/docs/job-specification/group.html
#
group "prod-group1-minio" {
# The "count" parameter specifies the number of the task groups that should
# be running under this group. This value must be non-negative and defaults
# to 1.
count = ${group_count}
# https://www.nomadproject.io/docs/job-specification/volume
%{ if use_host_volume }
volume "prod-volume1-minio" {
type = "host"
read_only = false
source = "${host_volume}"
}
%{ endif }
# The "task" stanza creates an individual unit of work, such as a Docker
# container, web application, or batch processing.
#
# For more information and examples on the "task" stanza, please see
# the online documentation at:
#
# https://www.nomadproject.io/docs/job-specification/task.html
#
task "prod-task1-minio" {
# The "driver" parameter specifies the task driver that should be used to
# run the task.
driver = "docker"
%{ if use_host_volume }
volume_mount {
volume = "prod-volume1-minio"
destination = "${data_dir}"
read_only = false
}
%{ endif }
%{ if use_vault_provider }
vault {
policies = "${vault_kv_policy_name}"
}
%{ endif }
# The "config" stanza specifies the driver configuration, which is passed
# directly to the driver to start the task. The details of configurations
# are specific to each driver, so please see specific driver
# documentation for more information.
config {
image = "${image}"
dns_servers = [ "$${attr.unique.network.ip-address}" ]
network_mode = "host"
command = "server"
args = [ "${host}:${port}${data_dir}" ]
port_map {
http = ${port}
}
privileged = false
}
# The env stanza configures a list of environment variables to populate
# the task's environment before starting.
env {
%{ if use_vault_provider }
{{ with secret "${vault_kv_path}" }}
MINIO_ACCESS_KEY = "{{ .Data.data.${vault_kv_field_access_key} }}"
MINIO_SECRET_KEY = "{{ .Data.data.${vault_kv_field_secret_key} }}"
{{ end }}
%{ else }
MINIO_ACCESS_KEY = "${access_key}"
MINIO_SECRET_KEY = "${secret_key}"
%{ endif }
${ envs }
}
# The service stanza instructs Nomad to register a service with Consul.
#
# For more information and examples on the "task" stanza, please see
# the online documentation at:
#
# https://www.nomadproject.io/docs/job-specification/service.html
#
service {
name = "${service_name}"
port = "http"
tags = [ "storage$${NOMAD_ALLOC_INDEX}" ]
check {
name = "Min.io Server HTTP Check Live"
type = "http"
port = "http"
protocol = "http"
method = "GET"
path = "/minio/health/live"
interval = "10s"
timeout = "2s"
}
check {
name = "Min.io Server HTTP Check Ready"
type = "http"
port = "http"
protocol = "http"
method = "GET"
path = "/minio/health/ready"
interval = "10s"
timeout = "2s"
}
}
# The "resources" stanza describes the requirements a task needs to
# execute. Resource requirements include memory, network, cpu, and more.
# This ensures the task will execute on a machine that contains enough
# resource capacity.
#
# For more information and examples on the "resources" stanza, please see
# the online documentation at:
#
# https://www.nomadproject.io/docs/job-specification/resources.html
#
resources {
cpu = ${cpu}
memory = ${memory}
# The network stanza specifies the networking requirements for the task
# group, including the network mode and port allocations. When scheduling
# jobs in Nomad they are provisioned across your fleet of machines along
# with other jobs and services. Because you don't know in advance what host
# your job will be provisioned on, Nomad will provide your tasks with
# network configuration when they start up.
#
# For more information and examples on the "template" stanza, please see
# the online documentation at:
#
# https://www.nomadproject.io/docs/job-specification/network.html
#
network {
port "http" {
static = ${port}
}
}
}
}
}
}
|
