openthread/environment docker rsyslogd: imklog: cannot open kernel log (/proc/kmsg): Operation not permitted

问题

I am running openthread/environment:latest docker image (as of 2019-06-15)

When starting on a fresh ubuntu 18.04 with docker 18.09 using the command

ubuntu@ip-172-31-37-198:~$ docker run -it --rm openthread/environment bash

I get the following output

• Stopping system message bus dbus [ OK ]
• Starting system message bus dbus [ OK ]
• Starting enhanced syslogd rsyslogd

rsyslogd: imklog: cannot open kernel log (/proc/kmsg): Operation not permitted

rsyslogd: activation of module imklog failed [v8.32.0 try http://www.rsyslog.com/e/2145 ]

Anyone knows whether this is related to ubuntu setup or the docker container or how to fix.

回答1:

Try adding the --privileged option.

For example:

docker run -it --rm --privileged openthread/environment bash

回答2:

You will also get rid of this warning if you just comment out the line

module(load="imklog")

inside your Docker container (edit /etc/rsyslog.conf).

I doubt you want to read the kernel messages inside a container ;-)

回答3:

To implement @Reto's answer, put this in your Dockerfile and you're all set:

RUN sed -i '/imklog/s/^/#/' /etc/rsyslog.conf

来源：https://stackoverflow.com/questions/56609182/openthread-environment-docker-rsyslogd-imklog-cannot-open-kernel-log-proc-km