Apr 14, 2016 Hi kornzysiek Thank you for info,It saved me lot of time and can you suggest me how to enable systemctl in ubuntu docker image, You can’t do it without giving the container almost unlimited power over the host system and the ability to break out of the container space, and if you do manage to start systemd it will break things like the host cgroup settings (and to make things worse you.
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Docker Hub Ubuntu 18.04
The command “systemctl status” is not working. It never has. My container is on CentOS 7. When I issue “systemctl status” I get results “Failed to get D-Bus connection: operation not permitted.”
Docker Hub Ubuntu 18.04
I then looked into upgrading systemd. I removed the /etc/yum/protected.d/system.conf file. I then used yum remove systemd. I see that systemd version 219-19.el7_2.4 has been installed. I choose “N” to not actually remove systemd. I then installed systemd-libs-219-19.el7_2.7.x86_64.rpm. I then installed systemd version 2.7. I then used yum remove systemd just to determine the version. I see that systemd version 219-19.el7_2.7 is installed. I choose “NO” to abort the removal. systemctl status still does not work. I get the same error: “Failed to get D-Bus connection: operation not permitted.”
I tried creating a Docker container with the -privileged flag. When I used the “-p 80:80” option, the Docker run command failed. When I left out the “-p 80:80” option in my Docker run command, the new container had the same problem.
Docker Hub Ubuntu 18.04
I tried creating a Docker container with the -privileged flag. When I used the “-p 80:80” option, the Docker run command failed to create a new container. When I left out the “-p 80:80” option in my Docker run command, the new container had the same problem.
Docker Hub Ubuntu 18.04.2
Docker Hub Ubuntu 18.04
I created a Docker container with a “docker run” … “-v /sys/fs/cgroup:/sys/fs/cgroup:ro” option. But I had the same problem.
I expect “systemctl status” to work. I don’t know if the problem is with how I created the Docker container. Reinstalling (or upgrading) systemd did not work. What should I do to get “systemctl status” to work in a Docker container?