Foreman » SELinux

Scratch that for RHEL7, after investigation from this evening with Jason and Og, it turns out it is not passenger but foreman-tasks what causes this denial. And it does not start without this.

We run foreman-tasks (dynflow process) in passenger_t because it boots whole foreman to do its work. We need to allow this rule.

It does work in RHEL6 but in RHEL7 it does not start. Permissive only gives this denial and enforcing stops tasks from coming up. Allowing this rule proceeds.

service foreman-tasks start
Redirecting to /bin/systemctl start  foreman-tasks.service
Job for foreman-tasks.service failed. See 'systemctl status foreman-tasks.service' and 'journalctl -xn' for details.
[root@el7-smoketest ~]# vi log
[root@el7-smoketest ~]# audit2allow -m passenger-execmem < log

module passenger-execmem 1.0;

require {
        type passenger_t;
        class process execmem;
}

#============= passenger_t ==============
allow passenger_t self:process execmem;
You have new mail in /var/spool/mail/root
[root@el7-smoketest ~]# audit2allow -M passenger-execmem < log
******************** IMPORTANT ***********************
To make this policy package active, execute:

semodule -i passenger-execmem.pp

[root@el7-smoketest ~]# semodule -i passenger-execmem.pp
[root@el7-smoketest ~]# getenforce
Enforcing
[root@el7-smoketest ~]# service foreman-tasks start
Redirecting to /bin/systemctl start  foreman-tasks.service
You have new mail in /var/spool/mail/root
[root@el7-smoketest ~]# cat log
type=AVC msg=audit(1408565585.751:711): avc:  denied  { execmem } for  pid=52386 comm="ruby" scontext=system_u:system_r:passenger_t:s0 tcontext=system_u:system_r:passenger_t:s0 tclass=process
[root@el7-smoketest ~]# systemctl status foreman-tasks
foreman-tasks.service - Foreman jobs daemon
   Loaded: loaded (/usr/lib/systemd/system/foreman-tasks.service; enabled)
   Active: active (running) since Wed 2014-08-20 16:22:15 EDT; 22s ago
     Docs: https://github.com/iNecas/foreman-tasks
  Process: 52738 ExecStop=/usr/bin/foreman-tasks stop (code=exited, status=134)
  Process: 54593 ExecStart=/usr/bin/foreman-tasks start (code=exited, status=0/SUCCESS)
   CGroup: /system.slice/foreman-tasks.service
           ├─54635 dynflow_executor
           └─54637 dynflow_executor_monitor

Aug 20 16:20:56 el7-smoketest.sat6.lab.eng.bos.redhat.com foreman-tasks[54593]: ...
Aug 20 16:20:59 el7-smoketest.sat6.lab.eng.bos.redhat.com foreman-tasks[54593]: ...
Aug 20 16:20:59 el7-smoketest.sat6.lab.eng.bos.redhat.com foreman-tasks[54593]: ...
Aug 20 16:22:14 el7-smoketest.sat6.lab.eng.bos.redhat.com foreman-tasks[54593]: ...
Aug 20 16:22:15 el7-smoketest.sat6.lab.eng.bos.redhat.com systemd[1]: Started Fo...
Hint: Some lines were ellipsized, use -l to show in full.

Applied in changeset d867377e56451fc43030a30958499d34e6f4e485.

Investigating if daemons gem (used by foreman-tasks) does not cause that.