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Subject: Re: C-Groups status remains off in web server after installing
 C-Groups
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From: Satya Nand Kanodia <satya.kanodia@orkash.com>
Message-ID: <5611F818.1000206@orkash.com>
Date: Mon, 5 Oct 2015 09:40:00 +0530
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Dear Eddie,


Below are the contents of /cgroup on centos machine.

cgroup.event_control   memory.max_usage_in_bytes 
memory.oom_control          notify_on_release
cgroup.procs           memory.memsw.failcnt memory.soft_limit_in_bytes  
release_agent
ducc                   memory.memsw.limit_in_bytes 
memory.stat                 tasks
memory.failcnt         memory.memsw.max_usage_in_bytes memory.swappiness
memory.force_empty     memory.memsw.usage_in_bytes memory.usage_in_bytes
memory.limit_in_bytes  memory.move_charge_at_immigrate memory.use_hierarchy

these are the permissions on /cgroup/ducc

drwxr-xr-x 2 ducc root 0 Oct  5 09:29 .


Thanks and Regards,
Satya Nand Kanodia

On 10/01/2015 07:49 PM, Eddie Epstein wrote:
> FYI, below are the contents of /groups on a SLES 11.2 machine:
>
> ~$ ls /cgroup
> cgroup.clone_children  cpu.rt_runtime_us   memory.limit_in_bytes
> memory.stat            sysdefault
> cgroup.event_control   cpu.shares          memory.max_usage_in_bytes
> memory.swappiness      tasks
> cgroup.procs           cpu.stat            memory.move_charge_at_immigrate
> memory.usage_in_bytes
> cpu.cfs_period_us      ducc                memory.numa_stat
> memory.use_hierarchy
> cpu.cfs_quota_us       memory.failcnt      memory.oom_control
> notify_on_release
> cpu.rt_period_us       memory.force_empty  memory.soft_limit_in_bytes
> release_agent
>
> ~$ ls -ld /cgroup/ducc/
> drwxr-xr-x 2 ducc root 0 Sep  5 11:31 /cgroup/ducc/
>
>
> On Thu, Oct 1, 2015 at 8:20 AM, Eddie Epstein <eaepstein@gmail.com> wrote:
>
>> Well, please list the contents of /cgroups to confirm that the custom
>> cgconfig.conf is operating.
>> Eddie
>>
>> On Thu, Oct 1, 2015 at 12:40 AM, Satya Nand Kanodia <
>> satya.kanodia@orkash.com> wrote:
>>
>>> Hi Eddie,
>>>
>>> I had copied the same contents in  cgconfig.conf.(as it was also written
>>> in documentation.)
>>>
>>> anything else ?
>>>
>>> Thanks and Regards,
>>> Satya Nand Kanodia
>>>
>>> On 09/30/2015 05:28 PM, Eddie Epstein wrote:
>>>
>>>> Hi Satya,
>>>>
>>>> There is a custom cgconfig.conf that has to be installed in /etc/ before
>>>> starting the cgconfig service. Please see step 2 in the section "CGroups
>>>> Installation and Configuration". The custom config is repeated below.
>>>> Regards, Eddie
>>>>
>>>>      # Mount cgroups
>>>>      mount {
>>>>         memory = /cgroup;
>>>>         cpu = /cgroup;
>>>>      }
>>>>      # Define cgroup ducc and setup permissions
>>>>      group ducc {
>>>>       perm {
>>>>           task {
>>>>              uid = ducc;
>>>>           }
>>>>           admin {
>>>>              uid = ducc;
>>>>           }
>>>>       }
>>>>       memory {}
>>>>       cpu{}
>>>>      }
>>>>
>>>> On Wed, Sep 30, 2015 at 12:43 AM, Satya Nand Kanodia <
>>>> satya.kanodia@orkash.com> wrote:
>>>>
>>>> Hi,
>>>>> DUCC is running with the ducc user.
>>>>> why did you say "DUCC's /etc/cgconfig.conf specifies user=ducc to create
>>>>> cgroups."? As I installed C-Groups with sudo yum, It has root as owner.
>>>>> Do
>>>>> I need to change it's owner or permissions. It is having currently 644
>>>>> permissions.
>>>>>
>>>>> Thanks and Regards,
>>>>> Satya Nand Kanodia
>>>>>
>>>>> On 09/29/2015 06:46 PM, Eddie Epstein wrote:
>>>>>
>>>>> DUCC's /etc/cgconfig.conf specifies user=ducc to create cgroups.
>>>>>> Is DUCC running as user=ducc?
>>>>>>
>>>>>> Using sudo for cgreate testing suggests that the ducc userid is not
>>>>>> being
>>>>>> used.
>>>>>>
>>>>>> Eddie
>>>>>>
>>>>>> On Tue, Sep 29, 2015 at 3:12 AM, Satya Nand Kanodia <
>>>>>> satya.kanodia@orkash.com> wrote:
>>>>>>
>>>>>> Hi,
>>>>>>
>>>>>>> I am using CentOS release 6.6 for DUCC installation. I did all
>>>>>>> according
>>>>>>> to documentation to enable C-Groups.
>>>>>>> Following command executed without any error.( I had to execute it
>>>>>>> using
>>>>>>> sudo.)
>>>>>>>
>>>>>>> cgcreate -t ducc -a ducc -g memory:ducc/test-cgroups
>>>>>>>
>>>>>>> But on webserver in machines section , it is showing *off* status
>>>>>>> under
>>>>>>> the C-Groups.
>>>>>>>
>>>>>>> I don't know what went wrong.
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> Thanks and Regards,
>>>>>>> Satya Nand Kanodia
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>