Description of problem: Tried to use machinectl command to shutdown running container using the following command: sudo machinectl poweroff ubuntu_zesty_1704 SELinux is preventing systemd-machine from using the 'signal' accesses on a process. ***** Plugin catchall (100. confidence) suggests ************************** If you believe that systemd-machine should be allowed signal access on processes labeled unconfined_t by default. Then you should report this as a bug. You can generate a local policy module to allow this access. Do allow this access for now by executing: # ausearch -c 'systemd-machine' --raw | audit2allow -M my-systemdmachine # semodule -X 300 -i my-systemdmachine.pp Additional Information: Source Context system_u:system_r:systemd_machined_t:s0 Target Context unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1 023 Target Objects Unknown [ process ] Source systemd-machine Source Path systemd-machine Port <Unknown> Host (removed) Source RPM Packages Target RPM Packages Policy RPM selinux-policy-3.13.1-225.6.fc25.noarch Selinux Enabled True Policy Type targeted Enforcing Mode Enforcing Host Name (removed) Platform Linux (removed) 4.9.8-201.fc25.x86_64 #1 SMP Tue Feb 7 11:28:07 UTC 2017 x86_64 x86_64 Alert Count 2 First Seen 2017-06-06 20:47:51 EDT Last Seen 2017-06-06 20:47:54 EDT Local ID 1945f8c5-70fa-4426-a997-686207a8e744 Raw Audit Messages type=AVC msg=audit(1496796474.103:4796): avc: denied { signal } for pid=18628 comm="systemd-machine" scontext=system_u:system_r:systemd_machined_t:s0 tcontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tclass=process permissive=0 Hash: systemd-machine,systemd_machined_t,unconfined_t,process,signal Version-Release number of selected component: selinux-policy-3.13.1-225.6.fc25.noarch Additional info: reporter: libreport-2.8.0 hashmarkername: setroubleshoot kernel: 4.9.8-201.fc25.x86_64 type: libreport Potential duplicate: bug 1372644
The following command resolved the problem: sudo semodule -i my-systemdmachine.pp systemdmachine.pp contained: module my-systemdmachine 1.0; require { type systemd_machined_t; type unconfined_t; class process signal; } #============= systemd_machined_t ============== allow systemd_machined_t unconfined_t:process signal;
*** This bug has been marked as a duplicate of bug 1372644 ***