Re: 答复: How long will the logs be kept?

[David Zafman <dzafman-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>]

dout() is used for an OSD to log information about what it is doing 
locally and might become very chatty.  It is saved on the local nodes 
disk only.

clog is the cluster log and is used for major events that should be 
known by the administrator (see ceph -w).  Clog should be used sparingly 
as it sends the messages to the monitor.

David

On 12/3/15 4:36 AM, Wukongming wrote:
> OK! One more question. Do you know why ceph has 2 ways outputting logs(dout && clog). Cause I find dout is more helpful than clog, Did ceph use clog first, and dout added for new version?
>
> ---------------------------------------------
> wukongming ID: 12019
> Tel：0571-86760239
> Dept：2014 UIS2 ONEStor
>
> -----邮件原件-----
> 发件人: Jan Schermer [mailto:jan@schermer.cz]
> 发送时间: 2015年12月3日 16:58
> 收件人: wukongming 12019 (RD)
> 抄送: huang jun; ceph-devel@vger.kernel.org; ceph-users@lists.ceph.com
> 主题: Re: [ceph-users] How long will the logs be kept?
>
> You can setup logrotate however you want - not sure what the default is for your distro.
> Usually logrotate doesn't touch files that are smaller than some size even if they are old. It will also not delete logs for OSDs that no longer exist.
>
> Ceph itself has nothing to do with log rotation, logrotate does the work. Ceph packages likely contain default logrotate rules for the logs but you can edit them to your liking.
>
> Jan
>
>> On 03 Dec 2015, at 09:38, Wukongming <wu.kongming@h3c.com> wrote:
>>
>> Yes, I can find ceph of rotate configure file in the directory of /etc/logrotate.d.
>> Also, I find sth. Weird.
>>
>> drwxr-xr-x  2 root root   4.0K Dec  3 14:54 ./
>> drwxrwxr-x 19 root syslog 4.0K Dec  3 13:33 ../
>> -rw-------  1 root root      0 Dec  2 06:25 ceph.audit.log
>> -rw-------  1 root root    85K Nov 25 09:17 ceph.audit.log.1.gz
>> -rw-------  1 root root   228K Dec  3 16:00 ceph.log
>> -rw-------  1 root root    28K Dec  3 06:23 ceph.log.1.gz
>> -rw-------  1 root root   374K Dec  2 06:22 ceph.log.2.gz
>> -rw-r--r--  1 root root   4.3M Dec  3 16:01 ceph-mon.wkm01.log
>> -rw-r--r--  1 root root   561K Dec  3 06:25 ceph-mon.wkm01.log.1.gz
>> -rw-r--r--  1 root root   2.2M Dec  2 06:25 ceph-mon.wkm01.log.2.gz
>> -rw-r--r--  1 root root      0 Dec  2 06:25 ceph-osd.0.log
>> -rw-r--r--  1 root root    992 Dec  1 09:09 ceph-osd.0.log.1.gz
>> -rw-r--r--  1 root root    19K Dec  3 10:51 ceph-osd.2.log
>> -rw-r--r--  1 root root   2.3K Dec  2 10:50 ceph-osd.2.log.1.gz
>> -rw-r--r--  1 root root    27K Dec  1 10:31 ceph-osd.2.log.2.gz
>> -rw-r--r--  1 root root    13K Dec  3 10:23 ceph-osd.5.log
>> -rw-r--r--  1 root root   1.6K Dec  2 09:57 ceph-osd.5.log.1.gz
>> -rw-r--r--  1 root root    22K Dec  1 09:51 ceph-osd.5.log.2.gz
>> -rw-r--r--  1 root root    19K Dec  3 10:51 ceph-osd.8.log
>> -rw-r--r--  1 root root    18K Dec  2 10:50 ceph-osd.8.log.1
>> -rw-r--r--  1 root root   261K Dec  1 13:54 ceph-osd.8.log.2
>>
>> I deployed ceph cluster on Nov 21, from that day to Dec.1, I mean the continue 10 days' logs were compressed into one file, it is not what I want.
>> Does any OP affect log compressing?
>>
>> Thanks!
>>             Kongming Wu
>> ---------------------------------------------
>> wukongming ID: 12019
>> Tel：0571-86760239
>> Dept：2014 UIS2 ONEStor
>>
>> -----邮件原件-----
>> 发件人: huang jun [mailto:hjwsm1989@gmail.com]
>> 发送时间: 2015年12月3日 13:19
>> 收件人: wukongming 12019 (RD)
>> 抄送: ceph-devel@vger.kernel.org; ceph-users@lists.ceph.com
>> 主题: Re: How long will the logs be kept?
>>
>> it will rotate every week by default, you can see the logrotate file
>> /etc/ceph/logrotate.d/ceph
>>
>> 2015-12-03 12:37 GMT+08:00 Wukongming <wu.kongming@h3c.com>:
>>> Hi ,All
>>>         Is there anyone who knows How long or how many days will the logs.gz (mon/osd/mds)be kept, maybe before flushed?
>>>
>>> ---------------------------------------------
>>> wukongming ID: 12019
>>> Tel：0571-86760239
>>> Dept：2014 UIS2 OneStor
>>>
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>>
>> --
>> thanks
>> huangjun
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