Nomad+Docker: Using the local Docker image, avoiding cleanup - docker

Question

My problem
I use nomad to schedule and deploy Docker images across several nodes. I am using a pretty stable image, so I want that image to be loaded locally rather than fetched from Dockerhub each time.
The docker.cleanup.image argument should do just that:
docker.cleanup.image Defaults to true. Changing this to false will prevent Nomad from removing images from stopped tasks, which is exactly what I want.
The documentation example is:
client {
options {
"docker.cleanup.image" = "false"
}
}
However, I don't know where this stanza goes. I tried placing it in the job or task sections of the fairly simple configuration file, with no success.
Code (configuration file)
job "example" {
datacenters = ["dc1"]
type = "service"
update {
max_parallel = 30
min_healthy_time = "10s"
healthy_deadline = "3m"
auto_revert = false
canary = 0
}
group "cache" {
count = 30
restart {
attempts = 10
interval = "5m"
delay = "25s"
mode = "delay"
}
ephemeral_disk {
size = 300
}
task "redis" {
driver = "docker"
config {
image = "whatever/whatever:v1"
port_map {
db = 80
}
}
env {
"LOGGER" = "ec2-52-58-216-66.eu-central-1.compute.amazonaws.com"
}
resources {
network {
mbits = 10
port "db" {}
}
}
service {
name = "global-redis-check"
tags = ["global", "cache"]
port = "db"
}
}
}
}
My question
Where do I place the client stanza in the nomad configuration file?

Answer 1

This doesn't go in your job file, it goes on the nomad agents (the clients where nomad jobs are deployed).