I find this to be a problem with the /CGFLAG_USECACHE flag which I will
patch on my machine to test. Correct me if I'm wrong./
/Noah J. McNallie
/
On 7/6/2016 5:26 PM, Noah McNallie wrote:
Hi, I'm trying to use cgroups for cron and su and ssh login so I added
the following in 'system-auth' which they all include gentoo:
session required pam_cgroup.so debug
My cgconfig.conf looks as follows:
#
# Copyright IBM Corporation. 2007
#
# Authors: Balbir Singh <balbir@xxxxxxxxxxxxxxxxxx>
# This program is free software; you can redistribute it and/or
modify it
# under the terms of version 2.1 of the GNU Lesser General Public
License
# as published by the Free Software Foundation.
#
# This program is distributed in the hope that it would be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
#
mount {
cpuset = /sys/fs/cgroup/cpuset;
cpu = /sys/fs/cgroup/cpu;
cpuacct = /sys/fs/cgroup/cpuacct;
memory = /sys/fs/cgroup/memory;
}
group users/alex {
perm {
task {
uid = alex;
gid = alex;
} admin {
uid = root;
gid = root;
}
}
cpu {
cpu.shares = 100;
}
memory {
memory.limit_in_bytes = 134217728;
}
}
-- END --
And my cgrules.conf looks like this:
# /etc/cgrules.conf
#The format of this file is described in cgrules.conf(5)
#manual page.
#
# Example:
#<user> <controllers> <destination>
#@student cpu,memory usergroup/student/
#peter cpu test1/
#% memory test2/
# End of file
alex cpu,memory users/alex
-- END --
Now when I su to user alex I see this in /var/log/messages:
Jul 6 17:18:03 atlantic su[5583]: pam_cgroup(su:session): Changed
cgroup for process 5583 with username alex.
-- END --
Except that pid is not in users/alex/tasks its in some task files
related to openrc and it looks like the function
cgroup_change_cgroup_uid_gid_flags is not doing a proper change:
[alex@xxxxxxxxxxxx][/sys/fs/cgroup]# ls
blkio cpu cpuacct cpuset memory net_cls openrc
[alex@xxxxxxxxxxxx][/sys/fs/cgroup]# find ./ -name tasks | xargs grep
5583
./net_cls/tasks:5583
./memory/tasks:5583
./blkio/tasks:5583
./cpuacct/tasks:5583
./cpu/openrc_sshd/tasks:5583
./cpuset/tasks:5583
./openrc/sshd/tasks:5583
[alex@xxxxxxxxxxxx][/sys/fs/cgroup]# cat memory/users/alex/tasks
[alex@xxxxxxxxxxxx][/sys/fs/cgroup]#
-- END --
Why is it not in users/alex what am I doing wrong?
Noah J. McNallie
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