This repository was archived by the owner on Jun 27, 2025. It is now read-only.
This repository was archived by the owner on Jun 27, 2025. It is now read-only.
Unable to define namespace within job template #427
Description
Description
When deploying a job template with levant, the namespace argument gets ignored and the job is always placed in default namespace.
When using a rendered job template and applying this output to nomad the namespace gets handled as expected.
$ levant plan -var-file levant.yaml --log-level=DEBUG automation/zigbee2mqtt.hcl
2021-09-28T09:36:07Z |DEBU| template/render: variable file extension .yaml detected
2021-09-28T09:36:07Z |DEBU| template/render: no command line variables passed
2021-09-28T09:36:07Z |DEBU| template/funcs: renaming "replace" function to "levantReplace"
2021-09-28T09:36:07Z |DEBU| template/funcs: renaming "add" function to "levantAdd"
2021-09-28T09:36:07Z |DEBU| template/funcs: renaming "env" function to "levantEnv"
2021-09-28T09:36:07Z |INFO| helper/variable: using variable with key nomad and value map[datacenter:home] from file
2021-09-28T09:36:07Z |INFO| helper/variable: using variable with key common and value map[dirs:map[shared:/srv/] env:map[pgid:1000 puid:1000]] from file
2021-09-28T09:36:07Z |DEBU| levant/plan: triggering Nomad plan
2021-09-28T09:36:07Z |INFO| levant/plan: job is a new addition to the cluster
levant would create a new job in the cluster, instead, the same configuration/plan dumped into a file and using nomad plan shows no changes - as expected.
$ levant render -var-file levant.yaml --log-level=FATAL automation/zigbee2mqtt.hcl > tmp.hcl
$ nomad plan tmp.hcl
Job: "zigbee2mqtt"
Task Group: "homeautomation" (1 ignore)
Task: "zigbee2mqtt"
Scheduler dry-run:
- All tasks successfully allocated.
I added some output within the plan method
log.Info().Msg(fmt.Sprintf("Job namespace: %v", *lp.config.Template.Job.Namespace))
// Run a plan using the rendered job.
resp, _, err := lp.nomad.Jobs().Plan(lp.config.Template.Job, true, nil)
log.Info().Msg(fmt.Sprintf("%#v", resp.Diff))
And the output shows that the namespace is set in the job object which is applied to the nomad plan method:
2021-09-28T10:06:52Z |DEBU| levant/plan: triggering Nomad plan
2021-09-28T10:06:52Z |INFO| Job namespace: automation
2021-09-28T10:06:52Z |INFO| &api.JobDiff{Type:"Added", ID:"zigbee2mqtt", Fields:[]*api.FieldDiff{(*api.FieldDiff)(0xc0000b4ea0), (*api.FieldDiff)(0xc0000b4f00), (*api.FieldDiff)(0xc0000b4f60), (*api.FieldDiff)(0xc0000b4fc0), (*api.FieldDiff)(0xc0000b5020), (*api.FieldDiff)(0xc0000b5080), (*api.FieldDiff)(0xc0000b50e0), (*api.FieldDiff)(0xc0000b5140)}, Objects:[]*api.ObjectDiff{(*api.ObjectDiff)(0xc0000c9450), (*api.ObjectDiff)(0xc0000c94a0)}, TaskGroups:[]*api.TaskGroupDiff{(*api.TaskGroupDiff)(0xc0001dd3b0)}}
2021-09-28T10:06:52Z |INFO| levant/plan: job is a new addition to the cluster
After some research within the nomad project the following workaround came along which can be used as workaround but I would expect that when the namespace parameter is used within the plan description on file, this will also be applied onto nomad
NOMAD_NAMESPACE=automation levant plan -var-file levant.yaml --log-level=DEBUG automation/zigbee2mqtt.hcl
2021-09-28T10:32:25Z |DEBU| template/render: variable file extension .yaml detected
2021-09-28T10:32:25Z |DEBU| template/render: no command line variables passed
2021-09-28T10:32:25Z |DEBU| template/funcs: renaming "env" function to "levantEnv"
2021-09-28T10:32:25Z |DEBU| template/funcs: renaming "add" function to "levantAdd"
2021-09-28T10:32:25Z |DEBU| template/funcs: renaming "replace" function to "levantReplace"
2021-09-28T10:32:25Z |INFO| helper/variable: using variable with key app and value map[guacamole:map[db:map[hostname:172.16.20.206 name:guac password:guac user:guac] traefik:map[domain:guacamole.home.nitram.at] volumes:map[config:/srv/guacamole/]]] from file
2021-09-28T10:32:25Z |INFO| helper/variable: using variable with key nomad and value map[datacenter:home] from file
2021-09-28T10:32:25Z |INFO| helper/variable: using variable with key common and value map[dirs:map[shared:/srv/] env:map[pgid:1000 puid:1000]] from file
2021-09-28T10:32:25Z |DEBU| levant/plan: triggering Nomad plan
2021-09-28T10:32:25Z |INFO| levant/plan: no changes detected for job
2021-09-28T10:32:25Z |INFO| levant/plan: no changes found in job
Relevant Nomad job specification file
job "zigbee2mqtt" {
datacenters = ["[[ .nomad.datacenter ]]"]
type = "service"
namespace = "automation"
constraint {
attribute = "${node.unique.name}"
value = "zigbee"
}
update {
max_parallel = 1
min_healthy_time = "10s"
healthy_deadline = "3m"
auto_revert = false
canary = 0
}
group "homeautomation" {
count = 1
task "zigbee2mqtt" {
driver = "docker"
config {
image = "docker.io/koenkk/zigbee2mqtt"
volumes = [
"[[ .common.dirs.shared ]]zigbee2mqtt:/app/data",
"/run/udev:/run/udev",
]
devices = [
{
host_path = "/dev/ttyACM0"
container_path = "/dev/ttyACM0"
}
]
}
service {
tags = ["logging"]
check {
type = "script"
name = "zigbee_nodejs"
command = "pgrep"
args = ["node"]
interval = "60s"
timeout = "5s"
check_restart {
limit = 3
grace = "90s"
ignore_warnings = false
}
}
}
resources {
cpu = 128
memory = 192
}
}
}
}
Output of levant version:
$ levant version
Levant v0.3.0
Output of consul version:
$ consul version
Consul v1.10.1
Revision db839f18b
Protocol 2 spoken by default, understands 2 to 3 (agent will automatically use protocol >2 when speaking to compatible agents)
Output of nomad version:
$ nomad version
Nomad v1.1.4 (acd3d7889328ad1df2895eb714e2cbe3dd9c6d82)
Additional environment details:
tmp.hcl used on nomad plan:
$ cat tmp.hcl
job "zigbee2mqtt" {
datacenters = ["home"]
type = "service"
namespace = "automation"
constraint {
attribute = "${node.unique.name}"
value = "zigbee"
}
update {
max_parallel = 1
min_healthy_time = "10s"
healthy_deadline = "3m"
auto_revert = false
canary = 0
}
group "homeautomation" {
count = 1
task "zigbee2mqtt" {
driver = "docker"
config {
image = "docker.io/koenkk/zigbee2mqtt"
volumes = [
"/srv/zigbee2mqtt:/app/data",
"/run/udev:/run/udev",
]
devices = [
{
host_path = "/dev/ttyACM0"
container_path = "/dev/ttyACM0"
}
]
}
service {
tags = ["logging"]
check {
type = "script"
name = "zigbee_nodejs"
command = "pgrep"
args = ["node"]
interval = "60s"
timeout = "5s"
check_restart {
limit = 3
grace = "90s"
ignore_warnings = false
}
}
}
resources {
cpu = 128
memory = 192
}
}
}
}