Script notification howto

[spacedogs-wtf]

I am not able to make the script notification work with Diun running in docker itself.
It claims that there is no file or folder when i enter a script.
Even adding a simple echo command fails because the command is not in $PATH, i get told.
I dont think its an issue on your side. So i kindly ask if you can provide a working example in the docs.

[crazy-max]

@spacedogs-wtf

I am not able to make the script notification work with Diun running in docker itself.

Can you show your compose file and diun configuration please?

[spacedogs-wtf]

version: "3.7"

services:
  diun:
    image: crazymax/diun:latest
    container_name: diun
    restart: always
    volumes:
      - /diun/data:/data
      - /var/run/docker.sock:/var/run/docker.sock
    environment:
      - "TZ=Europe/Berlin"
      - "LOG_LEVEL=info"
      - "LOG_JSON=false"
      - "DIUN_WATCH_SCHEDULE=0 */6 * * *"
      - "DIUN_WATCH_FIRSTCHECKNOTIF=true"
      - "DIUN_PROVIDERS_DOCKER=true"
      - "DIUN_PROVIDERS_DOCKER_WATCHBYDEFAULT=true"
      - "DIUN_NOTIF_SCRIPT_CMD=echo 'hello'"

results in Script notification failed error=": exec: \"echo 'hello'\": executable file not found in $PATH" image=[...] for every container.
i also tried to mount a script from the host into diun. i tested several ways to run it (e.g. with set DIUN_NOTIF_SCRIPT_DIR) but it always fails too.

[crazy-max]

@spacedogs-wtf echo 'hello' is not a valid command. If you want to pass args you have to use the DIUN_NOTIF_SCRIPT_ARGS env as explained in the documentation:

version: "3.7"

services:
  diun:
    image: crazymax/diun:latest
    container_name: diun
    restart: always
    volumes:
      - /diun/data:/data
      - /var/run/docker.sock:/var/run/docker.sock
    environment:
      - "TZ=Europe/Berlin"
      - "LOG_LEVEL=info"
      - "LOG_JSON=false"
      - "DIUN_WATCH_SCHEDULE=0 */6 * * *"
      - "DIUN_WATCH_FIRSTCHECKNOTIF=true"
      - "DIUN_PROVIDERS_DOCKER=true"
      - "DIUN_PROVIDERS_DOCKER_WATCHBYDEFAULT=true"
      - "DIUN_NOTIF_SCRIPT_CMD=echo"
      - "DIUN_NOTIF_SCRIPT_ARGS=hello"

[spacedogs-wtf]

ah thats the missing piece. now it works 👍

maybe as a help for others:
mount the script you want to execute into the diun container (of course). as a value for DIUN_NOTIF_SCRIPT_CMD i had to use sh. bashand . did not work.

@crazy-max one last question: according to the docs it seems that you do not forward the new version of the updated container image as an environment variable to the script. is it possible to add another variable containing the new version? or maybe two variables: current and new version? if so i will add a feature request

[crazy-max]

@spacedogs-wtf

i had to use sh. bash and . did not work.

If you want to exec a shell script yes you have to use sh. bash package is not installed in the Docker image.

one last question: according to the docs it seems that you do not forward the new version of the updated container image as an environment variable to the script. is it possible to add another variable containing the new version? or maybe two variables: current and new version? if so i will add a feature request

What do you mean by "new version"?