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@xxxxxxxxxxx] 发送时间: 2015年12月3日 16:58 收件人: wukongming 12019 (RD) 抄送: huang jun; ceph-devel@xxxxxxxxxxxxxxx; ceph-users@xxxxxxxxxxxxxx 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. JanOn 03 Dec 2015, at 09:38, Wukongming <wu.kongming@xxxxxxx> 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@xxxxxxxxx] 发送时间: 2015年12月3日 13:19 收件人: wukongming 12019 (RD) 抄送: ceph-devel@xxxxxxxxxxxxxxx; ceph-users@xxxxxxxxxxxxxx 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@xxxxxxx>: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 --------------------------------------------------------------------- - --------------------------------------------------------------- 本邮件及其附件含有杭州华三通信技术有限公司的保密信息，仅限于发送给上面地址中列出 的个人或群组。禁止任何其他人以任何形式使用（包括但不限于全部或部分地泄露、复制、 或散发）本邮件中的信息。如果您错收了本邮件，请您立即电话或邮件通知发件人并删除本 邮件！ This e-mail and its attachments contain confidential information from H3C, which is intended only for the person or entity whose address is listed above. Any use of the information contained herein in any way (including, but not limited to, total or partial disclosure, reproduction, or dissemination) by persons other than the intended recipient(s) is prohibited. If you receive this e-mail in error, please notify the sender by phone or email immediately and delete it!-- thanks huangjun _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.comN�����r��y���b�X��ǧv�^�){.n�+���z�]z���{ay� ʇڙ�,j��f���h���z� �w��� ���j:+v���w�j�m��������zZ+�����ݢj"��!tml=
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