logrotate config files will be overwritten every hour

[niusmallnan]

RancherOS Version: (ros os version)
v1.5.1
Where are you running RancherOS? (docker-machine, AWS, GCE, baremetal, etc.)
All

The logrotate service runs every hour by cron service, you can check its service label.
https://github.com/rancher/os/blob/master/os-config.tpl.yml#L249-L256

    logrotate:
      image: {{.OS_REPO}}/os-logrotate:{{.VERSION}}{{.SUFFIX}}
      command: /usr/sbin/logrotate -v /etc/logrotate.conf
      labels:
        io.rancher.os.createonly: "true"
        io.rancher.os.scope: system
        io.rancher.os.before: system-cron
        cron.schedule: "@hourly"

The logrotate has en entrypoint script, https://github.com/rancher/os/blob/master/images/02-logrotate/usr/bin/entrypoint.sh:

#!/bin/bash

cp /usr/share/logrotate/logrotate.d/* /etc/logrotate.d

exec /usr/bin/ros entrypoint "$@"

If the /etc/logrotate.d/docker file is modified, it will be overwritten each time, as the /usr/share/logrotate/logrotate.d/docker file is in the logrotate container.

[rootwuj]

Tested with rancher/os:v1.5.2-rc1 from May 27
This version of logrotate config files will not be overwritten every hour.
Verified fixed.