changes in label swarm.cronjob.schedule are not seen by swarm-cronjob

[francescor]

Something similare to #23

We are using docker in Swarm mode (version 27.5.1)

We have swarm-cronjob:1.15 deployed in one of the three managers (we use the ARM image)

We have noted that changes in the label: swarm.cronjob.schedule in a stack service have no effects on swarm-cronjob (we see nothing in its logs, indeed changes become irrelevant).

Our workaround is to execute, every time:

docker service update --force swarm-cronjob_app

This is our swarm-cronjob.yml

services:
  app:
    image: crazymax/swarm-cronjob:1.15
    volumes:
      - "/var/run/docker.sock:/var/run/docker.sock"
    environment:
      - "TZ=Europe/Rome"
      - "LOG_LEVEL=info"
      - "LOG_JSON=true"
    deploy:
      mode: replicated
      replicas: 1
      placement:
        constraints:
          - node.role == manager
          - node.platform.arch == aarch64

and this is an example of the labels of a service we want to cron

    deploy:
      placement:
        constraints:
          - node.role == worker
          - engine.labels.jobs-type == cron
      replicas: 1
      labels:
        swarm.cronjob.enable: "true"
        swarm.cronjob.schedule: "10 23 * * *"
        swarm.cronjob.skip-running: "true"
        swarm.cronjob.replicas: 1

[francescor]

in details, when we change label swarm.cronjob.schedule and then deploy its stack (or execute docker service update, or even docker service update --force of its service), we have nothing in the logs of swarm-cronjob

[francescor]

mmmh, I see now we even do not see changes in labels in docker service STACK_SERVICE, so I guess the issue is not in swarm-cronjob.

Weird, since we very often use docker service update to apply changes in labels

[francescor]

ok, I see to have labels updated I need to deploy: fine. I confirm anyhow the issue we are having: even with docker stack deploy changes in swarm.cronjob.schedule are not reflected in swarm-cronjob