Script in a pod is not getting executed - kubernetes

Question

I have an EKS cluster and an RDS (mariadb). I am trying to make a backup of given databases though a script in a CronJob. The CronJob object looks like this:
apiVersion: batch/v1
kind: CronJob
metadata:
name: mysqldump
namespace: mysqldump
spec:
schedule: "* * * * *"
concurrencyPolicy: Replace
jobTemplate:
spec:
template:
spec:
containers:
- name: mysql-backup
image: viejo/debian-mysqldump:latest
envFrom:
- configMapRef:
name: mysqldump-config
args:
- /bin/bash
- -c
- /root/mysqldump.sh "(${MYSQLDUMP_DATABASES})" > /proc/1/fd/1 2>/proc/1/fd/2 || echo KO > /tmp/healthcheck
resources:
limits:
cpu: "0.5"
memory: "0.5Gi"
restartPolicy: OnFailure
The script is called mysqldump.sh, which gets all necessary details from a ConfigMap object. It makes the dump of the databases in an environment variable MYSQLDUMP_DATABASES, and moves it to S3 bucket.
Note: I am going to move some variables to a Secret, but before I need this to work.
What happens is NOTHING. The script is never getting executed I tried putting a "echo starting the backup", before the script, and "echo backup ended" after it, but I don't see none of them. If I'd access the container and execute the same exact command manually, it works:
root#mysqldump-27550908-sjwfm:/# /root/mysqldump.sh "(${MYSQLDUMP_DATABASES})" > /proc/1/fd/1 2>/proc/1/fd/2 || echo KO > /tmp/healthcheck
root#mysqldump-27550908-sjwfm:/#
Can anyone point out a possible issue?

Answer 1

Try change args to command:
...
command:
- /bin/bash
- -c
- /root/mysqldump.sh "(${MYSQLDUMP_DATABASES})" > /proc/1/fd/1 2>/proc/1/fd/2 || echo KO > /tmp/healthcheck
...