I have met same case with you also I'm using proxmox. Should like the image of Proxmox provided for us diffent a bit with normal OS. My laptop using Ubuntu 18.04 but no problem with the rsyslog. It still is version rsyslogd 8.32.0.
Rsyslog is included in all major distributions. So you do not necessarily need to take care of where packages can be found - they are “just there”. Unfortunately, the distros provide often rather old versions. This is especially the case for so-called enterprise distributions. So to fix this, I have still newest version of rsyslog then the issue has solved. sudo apt-get install -y software-properties-common # Provide add-apt-repository sudo add-apt-repository ppa:adiscon/v8-stable sudo apt-get update sudo apt-get install rsyslog Let's run again: # /etc/cron.daily/logrotate -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to logrotate in Ubuntu. https://bugs.launchpad.net/bugs/1801910 Title: logrotate fails on LXC Status in logrotate package in Ubuntu: Confirmed Bug description: daily, I receive this alert from logrotate script in cron.daily: /etc/cron.daily/logrotate: Failed to kill unit rsyslog.service: Input/output error error: error running non-shared postrotate script for /var/log/syslog of '/var/log/syslog ' run-parts: /etc/cron.daily/logrotate exited with return code 1 My ubuntu is a LXC running on top of ProxmoxVE. the problem occour when logrotate script call /usr/lib/rsyslog /rsyslog-rotate that has this call: systemctl kill -s HUP rsyslog.service I already checked my disks status (because the input/output error) but them are ok. The same issue is present also in another LXC, ubuntu also this one, running on another node of the same cluster ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: logrotate 3.11.0-0.1ubuntu1 ProcVersionSignature: Uname: Linux 4.15.18-7-pve x86_64 ApportVersion: 2.20.9-0ubuntu7.4 Architecture: amd64 Date: Tue Nov 6 10:26:37 2018 ProcEnviron: LANG=C SHELL=/bin/bash TERM=xterm XDG_RUNTIME_DIR=<set> PATH=(custom, no user) SourcePackage: logrotate UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/logrotate/+bug/1801910/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp