BUG | yaml script opens for writing

[roitalpaz]

Description

metricbeat-yml-script.py opens it's config files (in /logzio/modules/aws.yml for example) as "r+".
this causes crashes if its mounted in read only like in k8s configmaps

Reproduce

mount a configmap into /logzio/modules

Code

2021-04-11 09:03:51,987         INFO    [__main__]      metricbeat-yml-script.py:67     Connection Established
Traceback (most recent call last):
  File "metricbeat-yml-script.py", line 265, in <module>
    _add_modules()
  File "metricbeat-yml-script.py", line 80, in _add_modules
    _enable_modules(modules)
  File "metricbeat-yml-script.py", line 91, in _enable_modules
    with open("modules/{}.yml".format(module), "r+") as module_file:
OSError: [Errno 30] Read-only file system: 'modules/aws.yml'