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Description of problem:
If we follow the openstack doc to configure the centralized log: https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/16.1/html-single/logging_monitoring_and_troubleshooting_guide/index#installing-and-configuring-the-logs-service_osp , the configuration is a container in charge to logrotate files with a cron job and another container is in charge to send files to elasticsearch with rsyslog.

- because containers can't send a signal to a service in another one, logrotate is configured with "copytroncate"
- Is this option reliable ?
- The issue is that rsyslog stops sending msg to remote host once the rotation occurred.

- I found the option reopenOnTruncate="on" of rsyslog that solves the issue, but it is marked as experimental.
Is it supported/recommended ?

Version-Release number of selected component (if applicable):
RHEL8 

How reproducible:
always, outside of openstack

Steps to Reproduce:
1. configure imfile on a log file and omfwd to send it to remote host
2. rotate the log
3. 

Actual results:
Logs are not sent to remote anymore after the rotation

Expected results:
Logs sent to elasticsearch
The main question is: Is this configuration expected to work ?

Thank you !

Additional info: