This is a Nomad job file which can be used to run dockerised Traefik on your cluster as a system task. This ensures it will run on all nomad nodes which have available resources.
https://doc.traefik.io/traefik/
- Deploy a Nomad Cluster or Developer instance https://www.nomadproject.io/docs/install
- Consul should also be installed as Traefik uses this for discovery
- Download [Levant]https://github.com/hashicorp/levant
To deploy Traefik to your nomad cluster using levant use this command:
levant deploy -log-level=debug -address=<YOUR_NOMAD_ADDRESS> -var-file=variables.yaml traefik.nomadthe output should be something similar to:
Guys-MBP-533:Traefik_lb guy$ levant deploy -log-level=debug -address=https://nomad.eu-guystack.original.aws.hashidemos.io:4646 -var-file=variables.yaml traefik.nomad
2020-10-23T14:59:55+01:00 |DEBU| template/render: variable file extension .yaml detected
2020-10-23T14:59:55+01:00 |DEBU| template/render: no command line variables passed
2020-10-23T14:59:55+01:00 |INFO| helper/variable: using variable with key config and value map[image:traefik:v2.2 network_mode:host] from file
2020-10-23T14:59:55+01:00 |INFO| helper/variable: using variable with key resources and value map[cpu:100 memory:128 network:map[mbits:10] port:map[api:8081 http:8080]] from file
2020-10-23T14:59:55+01:00 |INFO| helper/variable: using variable with key consul and value map[address:http://127.0.0.1:8500 scheme:http] from file
2020-10-23T14:59:55+01:00 |INFO| helper/variable: using variable with key service and value map[name:Traefik] from file
2020-10-23T14:59:55+01:00 |INFO| helper/variable: using variable with key job and value map[datacenters:[eu-west-2a eu-west-2b eu-west-2c dc1] region:global type:system] from file
2020-10-23T14:59:55+01:00 |DEBU| levant/plan: triggering Nomad plan
2020-10-23T14:59:55+01:00 |INFO| levant/plan: job is a new addition to the cluster
2020-10-23T14:59:55+01:00 |INFO| levant/deploy: job is not running, using template file group counts job_id=traefik
2020-10-23T14:59:55+01:00 |INFO| levant/deploy: triggering a deployment job_id=traefik
2020-10-23T14:59:57+01:00 |DEBU| levant/job_status_checker: running job status checker for job job_id=traefik
2020-10-23T14:59:57+01:00 |INFO| levant/job_status_checker: job has status running job_id=traefik
2020-10-23T14:59:57+01:00 |INFO| levant/job_status_checker: task traefik in allocation 48eedcbd-d57a-40bd-a7ad-484f394cd8b5 now in pending state job_id=traefik
2020-10-23T14:59:57+01:00 |INFO| levant/job_status_checker: task traefik in allocation 53411b3b-53cc-5fd9-27f1-8b3d700c494e now in pending state job_id=traefik
2020-10-23T14:59:57+01:00 |INFO| levant/job_status_checker: task traefik in allocation 6a20193d-e39d-8d51-9af8-8f16322fdaa1 now in pending state job_id=traefik
2020-10-23T14:59:57+01:00 |INFO| levant/job_status_checker: task traefik in allocation 919b4092-14b5-87d3-f769-4861699d7be4 now in pending state job_id=traefik
2020-10-23T14:59:57+01:00 |INFO| levant/job_status_checker: task traefik in allocation dc4bd41f-86ff-f900-a285-db3c58a4afb7 now in pending state job_id=traefik
2020-10-23T15:00:00+01:00 |INFO| levant/job_status_checker: task traefik in allocation 6a20193d-e39d-8d51-9af8-8f16322fdaa1 now in running state job_id=traefik
2020-10-23T15:00:01+01:00 |INFO| levant/job_status_checker: task traefik in allocation 919b4092-14b5-87d3-f769-4861699d7be4 now in running state job_id=traefik
2020-10-23T15:00:01+01:00 |INFO| levant/job_status_checker: task traefik in allocation dc4bd41f-86ff-f900-a285-db3c58a4afb7 now in running state job_id=traefik
2020-10-23T15:00:01+01:00 |INFO| levant/job_status_checker: task traefik in allocation 53411b3b-53cc-5fd9-27f1-8b3d700c494e now in running state job_id=traefik
2020-10-23T15:00:01+01:00 |INFO| levant/job_status_checker: task traefik in allocation 48eedcbd-d57a-40bd-a7ad-484f394cd8b5 now in running state job_id=traefik
2020-10-23T15:00:01+01:00 |INFO| levant/job_status_checker: all allocations in deployment of job are running job_id=traefik
2020-10-23T15:00:01+01:00 |INFO| levant/deploy: job deployment successful job_id=traefik
Guys-MBP-533:Traefik_lb guy$ the variables.yaml file allow you to configure this deployment to best suit your necessity
| key | Description | default value |
|---|---|---|
| job | contains all the variables for the job stanza | - |
| job.datacenters | list of all the datacenters this deployment can deploy to | - 'eu-west-2a' - 'eu-west-2b' - 'eu-west-2c' -'dc1' |
| job.region | region name | global |
| job.type | type of Nomad job | system |
| config | contains all the variables for the task config stanza | - |
| config.image | Traefik Docker Image | "traefik:v2.2" |
| config.network_mode | Docker networking mode | "host" |
| resources | contains all the variables for the task resources stanza | - |
| resources.cpu | value for cpu resource allocation | 100 |
| resources.memory | value for cpu resource allocation | 128 |
| resources.network | contains all the variables for the networking config in the resources stanza | - |
| resources.network.mbits | contains all the variables for the port config in the resources networking stanza | 10 |
| resources.network.port | Docker networking mode | "host" |
| resources.network.port.http | port number for the "http" port | "8080" |
| resources.network.port.api | port number for the "api" port | "8081" |
| consul | contains all the variables for the consul config in the Traefik config template | - |
| consul.address | iP or FQDN and port of the consul agent (or cluster) | "http://127.0.0.1:8500" |
| consul.scheme | tells traeffik what networking scheme it should use for Consul communication | "http" |
| service | contains all the variables for consul service config stanza | - |
| service.name | name that will identify instances of this task in consul registry | "Traefik" |
| service.tags | tags added to the consul service | - 'traefik' - 'global' |