I ran into the exact problem succinctly and completely written up here: <https://www.claudiokuenzler.com/blog/988/syslog-ng-lxc-container-no-space-left-on-device-dev> It doesn't appear this was brought to the attention of the devs nor an issue even filed in github. I'd like to make sure I didn't miss something, so posting here for comment before I submit a github issue. In summary, LXC sets up a small number of tty devices by default. However, syslog-ng in Debian has this config statement: destination d_console_all { file(`tty10`); }; This results in syslog-ng writing the a new /dev/tty10 file instead of to a device, which will pretty quickly fill up an LXC /dev partition, causing syslog-ng to soon start failing when it sees the device associated with tty10 file handle full. I have modified my syslog-ng.conf directly to use tty2 as the blog post suggested, but it would be nice if there was a "cleaner" work-around in the future. John