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Docker classic IsUp will return false when the container defines a healthcheck and is not healthy, otherwise as soon as it's started it's up. Docker swarm will check that the number of required tasks is higher than 1, and that the number of running tasks matches the number of desired tasks. A task is not running when it defines a healthcheck and is not healthy.
Traefik on demand service
Description
This is a service that can scale up or down a docker swarm service on demand. It basically starts a service when it's needed and then shut it down when it's no longer needed.
Usage
CLI
./traefik-ondemand-service --swarmMode=true
| Argument | Value | Description |
|---|---|---|
swarmMode |
true,false (default true) | Enable/Disable swarm mode. Used to determine the scaler implementation. |
Docker
docker run -v /var/run/docker.sock:/var/run/docker.sock -p 10000:10000 ghcr.io/acouvreur/traefik-ondemand-service:latest --swarmode=true
API
GET <service_url>:10000/?name=<service_name>&timeout=<timeout>
| Query param | Type | Description |
|---|---|---|
name |
string |
The docker container name, or the swarm service name |
timeout |
time.Duration |
The duration after which the container/service will be scaled down to 0 |
| Body | Status code | Description |
|---|---|---|
started |
202 Created | The container/service is available |
starting |
201 Accepted | The container/service has been scheduled for starting but is not yet available |